Crypt2 Delphi ActiveX Reference Documentation

TChilkatCrypt2

Current Version: 11.0.0

Chilkat encryption component.

Importing the Chilkat ActiveX into Delphi

Important: When upgrading to a new version of Chilkat, make sure to re-imported ActiveX DLL into Delphi to regenerate the files described below.


Chilkat v9.5.*: If using Chilkat v9.5.*, then use "Chilkat_v9_5_0_TLB" instead of "Chilkat_TLB", and the DLLs are named ChilkatAx-9.5.0-win32.dll (or ChilkatAx-9.5.0-x64.dll).


Two things are required to use an ActiveX in Delphi:

  1. The ActiveX DLL needs to be registered via regsvr32 on the system where the Delphi application runs. See How To Register ActiveX DLLs for detailed information.
  2. See also: ActiveX Registration Tutorial
  3. The ActiveX component needs to be "imported". Use the Delphi Import Component Wizard to import the Chilkat type library. This creates the following files: Chilkat_TLB.pas and Chilkat_TLB.dcr. The Chilkat_TLB.pas should be added to your project.

To import the Chilkat type library, do the following:

  1. In the Delphi RAD Studio, select the menu item "Component" --> "Import a Type Library".
  2. Find "Chilkat ActiveX" in the list and select it. This will only appear in the list if the ChilkatAx-win32.dll (or ChilkatAx-x64.dll) has been registered w/ regsvr32.
  3. Check the "Generate Component Wrappers" checkbox.
  4. Select a directory where the unit files (.pas and .dcr) should be generated.
  5. Select "Create Unit" and then "Finish".
  6. Add the .pas to your Delphi project.

To use a Chilkat ActiveX object in your Delphi code, add "Chilkat_TLB" to the "uses" statement. For example:

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

Object Creation

var
obj: TChilkatCrypt2;
...
begin
obj := TChilkatCrypt2.Create(Self);
...
// When finished, free the object instance.
obj.Free();

Properties

AbortCurrent
property AbortCurrent: Integer
Introduced in version 9.5.0.58

When set to 1, causes the currently running method to abort. Methods that always finish quickly (i.e.have no length file operations or network communications) are not affected. If no method is running, then this property is automatically reset to 0 when the next method is called. When the abort occurs, this property is reset to 0. Both synchronous and asynchronous method calls can be aborted. (A synchronous method call could be aborted by setting this property from a separate thread.)

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BCryptWorkFactor
property BCryptWorkFactor: Integer
Introduced in version 9.5.0.65

The BCrypt work factor to be used for the BCryptHash and BCryptVerify. This is the log2 of the number of rounds of hashing to apply. For example, if the work (cost) factor is 12, then 2^12 rounds of hashing are applied. The purpose of this cost factor is to make the BCrypt computation expensive enought to prevent brute-force attacks. (Any complaints about BCrypt not being fast enough will be ignored.)

This property must have a value ranging from 4 to 31 inclusive.

The default value is 10.

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BlockSize
property BlockSize: Integer readonly

The block-size (in bytes) of the selected encryption algorithm. For example, if the CryptAlgorithm property is set to aes, the BlockSize property is automatically set to 16. The block-size for the ARC4 streaming encryption algorithm is 1.

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CadesEnabled
property CadesEnabled: Integer

Applies to all methods that create PKCS7 signatures. To create a CAdES-BES signature, set this property equal to 1. The default value of this property is 0.

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CadesSigPolicyHash
property CadesSigPolicyHash: WideString

This is the base64 hash of the policy document located at the CadesSigPolicyUri. You can use either the SHA256 or SHA1 hash. You may use this online tool to compute the base64 hash: http://tools.chilkat.io/hashFileAtUrl.cshtml>Compute Base64 Hash for CaDES Signature Policy URL

Note: This property applies to all methods that create PKCS7 signatures. To create a CAdES-EPES signature, set the CadesEnabled property = 1, and also provide values for each of the following properties: CadesSigPolicyHash, CadesSigPolicyId, and CadesSigPolicyUri. For example (in pseudo-code):

cryptObj.CadesSigPolicyId = <code>2.16.76.1.7.1.1.1</code>
cryptObj.CadesSigPolicyUri = <code>http://politicas.icpbrasil.gov.br/PA_AD_RB.der</code>
cryptObj.CadesSigPolicyHash = <code>rySugyKaMhiMR8Y/o5yuU2A2bF0=</code>
Note: Do NOT use the values above. They are only provided as an example to show valid values. For example, the Policy ID is an OID. The Policy URI is a typically a URL to a DER encoded policy file, and the Policy Hash is a base64 encoded hash.

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CadesSigPolicyId
property CadesSigPolicyId: WideString

See the description for the CadesSigPolicyHash property above.

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CadesSigPolicyUri
property CadesSigPolicyUri: WideString

See the description for the CadesSigPolicyHash property above.

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Charset
property Charset: WideString

This property specifies the character encoding used to represent text as bytes for encryption and hashing. By default, it uses the computer's ANSI charset, such as Windows-1252 for locales like the United States, United Kingdom, Western Europe, Australia, and New Zealand.

Most applications are advised to set this property to UTF-8. Chilkat plans to change its default to UTF-8 in a future major version to align with current standards. The current default of ANSI stems from a time when UTF-8 was not widely adopted.

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CipherMode
property CipherMode: WideString

Sets the cipher mode for block encryption algorithms (AES, Blowfish,TwoFish, DES, 3DES, RC2). Possible values are CBC (the default) , ECB, CTR, OFB, GCM, and CFB. These acronyms have the following meanings:

  • CBC: Cipher Block Chaining,
  • ECB: Electronic CookBook
  • CTR: Counter Mode
  • CFB: Cipher Feedback
  • OFB: Output Feedback
  • GCM: Galois/Counter Mode
  • XTS: AES-XTS (starting in Chilkat v9.5.0.91, only works with AES encryption)

Prior to Chilkat v9.5.0.55, the CFB mode is only implemented for AES, Blowfish, and DES/3DES, and the CTR mode is only implemented for AES.

Starting in v9.5.0.55 CFB and OFB modes are useable with all encryption algorithms, and GCM (Galois/Counter Mode) is available with any cipher having a 16-byte block size, such as AES and Twofish. CFB, OFB, CTR, and GCM modes convert block ciphers into stream ciphers. In these modes of operation, the PaddingScheme property is unused because no padding occurs.

Starting in v9.5.0.91 Chilkat supports AES-XTS mode. XTS mode additionally uses a tweak key and tweak value, which are set via the XtsSetEncodedTweakKey, XtsSetEncodedTweakValue, and XtsSetDataUnitNumber. (The latter two functions provide alternative means of setting the tweak value.) Note: Chilkat fully supports AES-XTS mode with ciphertext-stealing, which means it will correctly encrypt/decrypt data with size not divisible by the block size (i.e. divisible by 16 bytes).

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CmsOptions
property CmsOptions: WideString
Introduced in version 9.5.0.78

A JSON string for controlling extra CMS (PKCS7) signature and validation options.

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CryptAlgorithm
property CryptAlgorithm: WideString

Selects the encryption algorithm for encrypting and decrypting. Possible values are: chacha20, pki, aes, blowfish2, des, 3des, rc2, arc4, twofish, pbes1 and pbes2. The pki encryption algorithm isn't a specific algorithm, but instead tells the component to encrypt/decrypt using public-key encryption (PKCS7/CMS) with digital certificates. The other choices are symmetric encryption algorithms that do not involve digital certificates and public/private keys.

The default value is aes

The original Chilkat implementation of Blowfish (in 2004) has a 4321 byte-swapping issue (the results are 4321 byte-swapped). The newer implementation (in 2006 and named blowfish2) does not byte swap. This should be used for compatibility with other Blowfish software. If an application needs to decrypt something encrypted with the old 4321 byte-swapped blowfish, set the property to blowfish_old.

Password-based encryption (PBE) is selected by setting this property to pbes1 or pbes2. Password-based encryption is defined in the PKCS5 Password-Based Cryptography Standard at https://tools.ietf.org/html/rfc2898. If PBE is used, the underlying encryption algorithm is specified by the PbesAlgorithm property. The underlying encryption (PbesAlgorithm) for PBES1 is limited to 56-bit DES or 64-bit RC2.

Note:The chacha20 algorithm is introduced in Chilkat v9.5.0.55.

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DebugLogFilePath
property DebugLogFilePath: WideString

If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.

Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.

Possible causes of hangs include:

  • A timeout property set to 0, indicating an infinite timeout.
  • A hang occurring within an event callback in the application code.
  • An internal bug in the Chilkat code causing the hang.

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EncodingMode
property EncodingMode: WideString

Controls the encoding of binary data to a printable string for many methods. The valid modes are Base64, modBase64, base64url, Base32, Base58, UU, QP (for quoted-printable), URL (for url-encoding), Hex, Q, B, url_oauth, url_rfc1738, url_rfc2396, url_rfc3986, fingerprint, or decimal.

The default value is base64

The fingerprint anddecimal encodings are introduced in Chilkat v9.5.0.55.

The fingerprint encoding is a lowercase hex encoding where each hex digit is separated by a colon character. For example: 6a:de:e0:af:56:f8:0c:04:11:5b:ef:4d:49:ad:09:23

The decimal encoding is for converting large decimal integers to/from a big-endian binary representation. For example, the decimal string 72623859790382856 converts to the bytes 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08.

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FirstChunk
property FirstChunk: Integer

Using the FirstChunk and LastChunk properties is the way to do streaming encryption or decryption with Chilkat.

By default, both FirstChunk and LastChunk are set to 1, indicating that the data passed to the encryption or decryption method is the full amount. To process data in multiple chunks, adjust these settings as follows:

1. For the first chunk, set FirstChunk = 1 and LastChunk = 0.
2. For intermediate chunks, set both FirstChunk = 0 and LastChunk = 0.
3. For the final chunk, set FirstChunk = 0 and LastChunk = 1.

You can feed data chunks of any size, regardless of the encryption algorithm's block size (e.g., 16 bytes for AES). Chilkat will handle buffering and, upon receiving the final chunk, pad the output to the appropriate block size according to the selected PaddingScheme.

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HashAlgorithm
property HashAlgorithm: WideString

Selects the hash algorithm used by methods that create hashes. The valid choices are sha1, sha256, sha384, sha512, sha3-224, sha3-256, sha3-384, sha3-512, md2, md5, haval, ripemd128, ripemd160,ripemd256, or ripemd320.

Note: SHA-2 designates a set of cryptographic hash functions that includes SHA-256, SHA-384, and SHA-512. Chilkat by definition supports SHA-2 because it supports these algorithms.

The default value is sha256.

Note: The HAVAL hash algorithm is affected by two other properties: HavalRounds and KeyLength.

  • The HavalRounds may have values of 3, 4, or 5.
  • The KeyLength may have values of 128, 160, 192, 224, or 256.

Note: The sha3-224, sha3-256, sha3-384, sha3-512 algorithms are added in Chilkat v9.5.0.83.

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HavalRounds
property HavalRounds: Integer

Applies to the HAVAL hash algorithm only and must be set to the integer value 3, 4, or 5. The default value is 3.

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HeartbeatMs
property HeartbeatMs: Integer

The number of milliseconds between each AbortCheck event callback. The AbortCheck callback allows an application to abort some methods call prior to completion. If HeartbeatMs is 0 (the default), no AbortCheck event callbacks will fire.

The methods with event callbacks are: CkDecryptFile, CkEncryptFile, HashFile, and HashFileENC.

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IncludeCertChain
property IncludeCertChain: Integer

Only applies when creating digital signatures. If 1 (the default), then additional certificates (if any) in the chain of authentication are included in the PKCS7 digital signature.

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InitialCount
property InitialCount: Integer
Introduced in version 9.5.0.55

The initial counter for the ChaCha20 encryption algorithm. The default value is 0.

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IterationCount
property IterationCount: Integer

Iteration count to be used with password-based encryption (PBE). Password-based encryption is defined in the PKCS5 Password-Based Cryptography Standard at http://www.rsa.com/rsalabs/node.asp?id=2127

The purpose of the iteration count is to increase the computation required to encrypt and decrypt. A larger iteration count makes cracking via exhaustive search more difficult. The default value is 1024.

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IV
property IV: OleVariant

The initialization vector to be used with symmetric encryption algorithms (AES, Blowfish, Twofish, etc.). If left unset, no initialization vector is used.

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KeyLength
property KeyLength: Integer

The key length in bits for symmetric encryption algorithms. The default value is 256.

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LastBinaryResult
property LastBinaryResult: OleVariant readonly

This property is mainly used in SQL Server stored procedures to retrieve binary data from the last method call that returned binary data. It is only accessible if Chilkat.Global.KeepBinaryResult is set to 1. This feature allows for the retrieval of large varbinary results in an SQL Server environment, which has restrictions on returning large data via method calls, though temp tables can handle binary properties.

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LastChunk
property LastChunk: Integer

See the documentation for the FirstChunk property.

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LastErrorHtml
property LastErrorHtml: WideString readonly

Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastErrorText
property LastErrorText: WideString readonly

Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastErrorXml
property LastErrorXml: WideString readonly

Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastMethodSuccess
property LastMethodSuccess: Integer

Indicates the success or failure of the most recent method call: 1 means success, 0 means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages.

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LastStringResult
property LastStringResult: WideString readonly

In SQL Server stored procedures, this property holds the string return value of the most recent method call that returns a string. It is accessible only when Chilkat.Global.KeepStringResult is set to TRUE. SQL Server has limitations on string lengths returned from methods and properties, but temp tables can be used to access large strings.

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LastStringResultLen
property LastStringResultLen: Integer readonly

The length, in characters, of the string contained in the LastStringResult property.

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MacAlgorithm
property MacAlgorithm: WideString
Introduced in version 9.5.0.55

Selects the MAC algorithm to be used for any of the Mac methods, such as MacStringENC, MacBytes, etc. The default value is hmac. Possible values are hmac and poly1305.

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NumSignerCerts
property NumSignerCerts: Integer readonly

This property is set when a digital signature is verified. It contains the number of signer certificates. Each signing certificate can be retrieved by calling the GetSignerCert method, passing an index from 0 to NumSignerCerts-1.

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OaepHash
property OaepHash: WideString
Introduced in version 9.5.0.67

Selects the hash algorithm for use within OAEP padding when encrypting using pki with RSAES-OAEP. The valid choices are sha1, sha256, sha384, sha512,

The default value is sha256

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OaepMgfHash
property OaepMgfHash: WideString
Introduced in version 9.5.0.71

Selects the MGF hash algorithm for use within OAEP padding when encrypting using pki with RSAES-OAEP. The valid choices are sha1, sha256, sha384, sha512, The default is sha256.

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OaepPadding
property OaepPadding: Integer
Introduced in version 9.5.0.67

Selects the RSA encryption scheme when encrypting using pki (with a certificate and private key). The default value is 0, which selects RSAES_PKCS1-V1_5. If set to 1, then RSAES_OAEP is used.

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PaddingScheme
property PaddingScheme: Integer

The padding scheme used by block encryption algorithms such as AES (Rijndael), Blowfish, Twofish, RC2, DES, 3DES, etc. Block encryption algorithms pad encrypted data to a multiple of algorithm's block size. The default value of this property is 0.

Possible values are:

0 = RFC 1423 padding scheme: Each padding byte is set to the number of padding bytes. If the data is already a multiple of algorithm's block size bytes, an extra block is appended each having a value equal to the block size. (for example, if the algorithm's block size is 16, then 16 bytes having the value 0x10 are added.). (This is also known as PKCS5 padding: PKCS #5 padding string consists of a sequence of bytes, each of which is equal to the total number of padding bytes added. )

1 = FIPS81 (Federal Information Processing Standards 81) where the last byte contains the number of padding bytes, including itself, and the other padding bytes are set to random values.

2 = Each padding byte is set to a random value. The decryptor must know how many bytes are in the original unencrypted data.

3 = Pad with NULLs. (If already a multiple of the algorithm's block size, no padding is added).

4 = Pad with SPACE chars(0x20). (If already a multiple of algorithm's block size, no padding is added).

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PbesAlgorithm
property PbesAlgorithm: WideString

If the CryptAlgorithm property is set to pbes1 or pbes2, this property specifies the underlying encryption algorithm to be used with password-based encryption (PBE). Password-based encryption is defined in the PKCS5 Password-Based Cryptography Standard at http://www.rsa.com/rsalabs/node.asp?id=2127

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PbesPassword
property PbesPassword: WideString

The password to be used with password-based encryption (PBE). Password-based encryption is defined in the PKCS5 Password-Based Cryptography Standard at http://www.rsa.com/rsalabs/node.asp?id=2127

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Pkcs7CryptAlg
property Pkcs7CryptAlg: WideString

When the CryptAlgorithm property is PKI to select PKCS7 public-key encryption, this selects the underlying symmetric encryption algorithm. Possible values are: aes, des, 3des, and rc2. The default value is aes.

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Rc2EffectiveKeyLength
property Rc2EffectiveKeyLength: Integer

The effective key length (in bits) for the RC2 encryption algorithm. When RC2 is used, both the KeyLength and Rc2EffectiveKeyLength properties should be set. For RC2, both should be between 8 and 1024 (inclusive).

The default value is 128

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Salt
property Salt: OleVariant

The salt to be used with password-based encryption (PBE). Password-based encryption is defined in the PKCS5 Password-Based Cryptography Standard at http://www.rsa.com/rsalabs/node.asp?id=2127

To clarify: This property is used in encryption when the CryptAlgorithm is set to pbes1 or pbes2. Also note that it is not used by the Pbkdf1 or Pbkdf2 methods, as the salt is passed in an argument to those methods.

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SecretKey
property SecretKey: OleVariant

The binary secret key used for symmetric encryption (Aes, Blowfish, Twofish, ChaCha20, ARC4, 3DES, RC2, etc.). The secret key must be identical for decryption to succeed. The length in bytes of the SecretKey must equal the KeyLength/8.

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SigningAlg
property SigningAlg: WideString
Introduced in version 9.5.0.67

This property selects the signature algorithm for the OpaqueSign*, Sign*, and CreateDetachedSignature, CreateP7M, and CreateP7S methods. The default value is PKCS1-v1_5. This can be set to RSASSA-PSS (or simply pss) to use the RSASSA-PSS signature scheme.

Note: This property only applies when the private key is an RSA private key. It does not apply for ECC or DSA private keys.

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SigningAttributes
property SigningAttributes: WideString
Introduced in version 9.5.0.75

Contains JSON to specify the authenticated (signed) attributes or unauthenticated (unsigned) attributes that are to be included in CMS signatures. The default value is:

{
    <code>contentType</code>: 1,
    <code>signingTime</code>: 1,
    <code>messageDigest</code>: 1
}

Other possible values that can be added are:

  • signingCertificateV2
  • signingCertificate
  • sMIMECapabilities
  • microsoftRecipientInfo
  • encrypKeyPref
  • cmsAlgorithmProtection
Contact Chilkat (support@chilkatsoft.com) about other signed/unsigned attributes that may be needed for CAdES signatures.

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UncommonOptions
property UncommonOptions: WideString
Introduced in version 9.5.0.83

This is a catch-all property to be used for uncommon needs. This property defaults to the empty string and should typically remain empty.

Can be set to a list of the following comma separated keywords:

  • UseConstructedOctets - Introduced in v9.5.0.83. When creating opaque CMS signatures (signatures that embed the data being signed), will use the constructed octets form of the ASN.1 that holds the data. This is to satify some validators that are brittle/fragile/picky and require a particular format, such as for the ICP-Brazil Digital Signature Standard.

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UuFilename
property UuFilename: WideString

When UU encoding, this is the filename to be embedded in UU encoded output. The default is file.dat. When UU decoding, this is the filename found in the UU encoded input.

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UuMode
property UuMode: WideString

When UU encoding, this is the file permissions mode to be embedded in UU encoded output. The default is 644. When UU decoding, this property is set to the mode found in the UU encoded input.

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VerboseLogging
property VerboseLogging: Integer

If set to 1, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is 0. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

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Version
property Version: WideString readonly

Version of the component/library, such as "10.1.0"

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Methods

AddEncryptCert
procedure AddEncryptCert(cert: TChilkatCert);

Adds a certificate for public-key encryption. To enable public-key encryption with digital certificates, set the CryptAlgorithm property to pki. Call AddEncryptCert separately for each certificate you wish to use for encryption.

Any of the Encrypt* methods will do RSA public-key encryption when the CryptAlgorithm is set to the keyword pki. The output is a PKCS#7 enveloped-data secure container.

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AddPfxSourceBd
function AddPfxSourceBd(bd: TChilkatBinData; password: WideString): Integer;
Introduced in version 11.0.0

Adds a PFX file to the object's list of sources for locating certificates and private keys during public-key decryption or signing. To add multiple PFX sources, call this method multiple times. bd should contain the bytes of a PFX file (also known as PKCS12 or .p12).

Note: Information about the certificate(s) needed for public-key decryption are included in the PKCS#7 enveloped-data. Chilkat will automatically find a usable certificate and private key from sources like Windows certificate stores, the Apple keychain, or other sources provided by the application.

Returns 1 for success, 0 for failure.

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AddPfxSourceData
function AddPfxSourceData(pfxBytes: OleVariant; pfxPassword: WideString): Integer;

Adds a PFX file to the object's list of sources for locating certificates and private keys during public-key decryption or signing. To add multiple PFX sources, call this method multiple times. pfxBytes should contain the bytes of a PFX file (also known as PKCS12 or .p12).

Returns 1 for success, 0 for failure.

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AddPfxSourceFile
function AddPfxSourceFile(pfxFilePath: WideString; pfxPassword: WideString): Integer;

Adds a PFX file to the object's list of sources for locating certificates and private keys during public-key decryption or signing. To add multiple PFX sources, call this method multiple times.

Note: Information about the certificate(s) needed for public-key decryption are included in the PKCS#7 enveloped-data. Chilkat will automatically find a usable certificate and private key from sources like Windows certificate stores, the Apple keychain, or other sources provided by the application.

Returns 1 for success, 0 for failure.

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AddSigningCert
function AddSigningCert(cert: TChilkatCert): Integer;
Introduced in version 9.5.0.83

Call this method once per certificate to add multiple certificates for signing. If signing with a single certificate, then the SetSigningCert or SetSigningCert2 methods can be used instead.

Returns 1 for success, 0 for failure.

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AesKeyUnwrap
function AesKeyUnwrap(kek: WideString; wrappedKeyData: WideString; encoding: WideString): WideString;
Introduced in version 9.5.0.66

Implements the AES Key Wrap Algorithm (RFC 3394) for unwrapping. The kek is the Key Encryption Key (the AES key used to unwrap the wrappedKeyData). The arguments and return value are binary encoded strings using the encoding specified by encoding (which can be base64, hex, base64url, etc.) The full list of supported encodings is available at the link below.

The kek should be an AES key of 16 bytes, 24 bytes, or 32 bytes (i.e. 128-bits, 192- bits, or 256-bits). For example, if passed as a hex string, then the kek should be 32 chars in length, 48 chars, or 64 chars (because each byte is represented as 2 chars in hex).

The wrappedKeyData contains the data to be unwrapped. The result, if decoded, is 8 bytes less than the wrapped key data. For example, if a 256-bit AES key (32 bytes) is wrapped, the size of the wrapped key data is 40 bytes. Unwrapping restores it to the original 32 bytes.

Returns a zero-length WideString on failure

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AesKeyUnwrapWithPadding
function AesKeyUnwrapWithPadding(kek: WideString; wrappedKeyData: WideString; encoding: WideString): WideString;
Introduced in version 9.5.0.96

Implements the AES Key Wrap with Padding Algorithm (RFC 5649) for unwrapping. The kek is the Key Encryption Key (the AES key used to unwrap the wrappedKeyData). The arguments and return value are binary encoded strings using the encoding specified by encoding (which can be base64, hex, base64url, etc.)

The kek should be an AES key of 16 bytes, 24 bytes, or 32 bytes (i.e. 128-bits, 192- bits, or 256-bits). For example, if passed as a hex string, then the kek should be 32 chars in length, 48 chars, or 64 chars (because each byte is represented as 2 chars in hex).

The wrappedKeyData contains the data to be unwrapped.

The unwrapped key is returned as an encoded string (using the encoding specified in encoding).

Returns a zero-length WideString on failure

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AesKeyWrap
function AesKeyWrap(kek: WideString; keyData: WideString; encoding: WideString): WideString;
Introduced in version 9.5.0.66

Implements the AES Key Wrap Algorithm (RFC 3394). The kek is the Key Encryption Key (the AES key used to encrypt the keyData). The arguments and return value are binary encoded strings using the encoding specified by encoding (which can be base64, hex, base64url, etc.) The full list of supported encodings is available at the link below.

The kek should be an AES key of 16 bytes, 24 bytes, or 32 bytes (i.e. 128-bits, 192- bits, or 256-bits). For example, if passed as a hex string, then the kek should be 32 chars in length, 48 chars, or 64 chars (because each byte is represented as 2 chars in hex).

The keyData contains the data to be key wrapped. It must be a multiple of 64-bits in length. In other words, if the keyData is decoded to binary, it should be a number of bytes that is a multiple of 8.

The return string, if decoded to binary bytes, is equal to the size of the key data + 8 additional bytes.

Returns a zero-length WideString on failure

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AesKeyWrapWithPadding
function AesKeyWrapWithPadding(kek: WideString; keyData: WideString; encoding: WideString): WideString;
Introduced in version 9.5.0.96

Implements the AES Key Wrap with Padding Algorithm (RFC 5649). The kek is the Key Encryption Key (the AES key used to encrypt the keyData). The arguments and return value are binary encoded strings using the encoding specified by encoding (which can be base64, hex, base64url, etc.)

The kek should be an AES key of 16 bytes, 24 bytes, or 32 bytes (i.e. 128-bits, 192- bits, or 256-bits). For example, if passed as a hex string, then the kek should be 32 chars in length, 48 chars, or 64 chars (because each byte is represented as 2 chars in hex).

The keyData contains the data to be key wrapped.

Returns the wrapped key using the encoding specified in encoding.

Returns a zero-length WideString on failure

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BCryptHash
function BCryptHash(password: WideString): WideString;
Introduced in version 9.5.0.65

Computes and returns a bcrypt hash of the password. The number of rounds of hashing is determined by the BCryptWorkFactor property.

Starting in v9.5.0.76, if the password is prefixed with $2b$ then the output will use the $2b version of bcrypt. For example, to create a $2b$ bcrypt has for the password secret, pass in the string $2b$secret for password.

Returns a zero-length WideString on failure

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BCryptVerify
function BCryptVerify(password: WideString; bcryptHash: WideString): Integer;
Introduced in version 9.5.0.65

Verifies the password against a previously computed BCrypt hash. Returns 1 if the password matches the bcryptHash. Returns 0 if the password does not match.

Returns 1 for success, 0 for failure.

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CkDecryptFile
function CkDecryptFile(srcFile: WideString; destFile: WideString): Integer;

File-to-file decryption that supports files of any size by using internal streaming mode.

Returns 1 for success, 0 for failure.

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CkDecryptFileAsync (1)
function CkDecryptFileAsync(srcFile: WideString; destFile: WideString): TChilkatTask;

Creates an asynchronous task to call the CkDecryptFile method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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CkEncryptFile
function CkEncryptFile(srcFile: WideString; destFile: WideString): Integer;

File-to-file encryption that operates in streaming mode, allowing it to encrypt files of any size.

Returns 1 for success, 0 for failure.

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CkEncryptFileAsync (1)
function CkEncryptFileAsync(srcFile: WideString; destFile: WideString): TChilkatTask;

Creates an asynchronous task to call the CkEncryptFile method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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ClearEncryptCerts
procedure ClearEncryptCerts();

Clears the internal list of digital certificates to be used for public-key encryption.

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ClearSigningCerts
procedure ClearSigningCerts();
Introduced in version 9.5.0.83

Clears the set of certificates to be used in signing.

Returns 1 for success, 0 for failure.

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CoSign
function CoSign(bdIn: TChilkatBinData; cert: TChilkatCert; bdOut: TChilkatBinData): Integer;
Introduced in version 9.5.0.89

Co-sign's an existing CMS signature. bdIn contains the existing CMS signature. If successful, cert is the output co-signed CMS signature.

Returns 1 for success, 0 for failure.

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CrcBd
function CrcBd(crcAlg: WideString; bd: TChilkatBinData): Integer;
Introduced in version 11.0.0

Computes a CRC for data contained in crcAlg, which can be either crc-32 used in the Zip file format, or crc8 for the CRC8 algorithm.

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CrcBytes
function CrcBytes(crcAlg: WideString; byteData: OleVariant): Integer;
Introduced in version 9.5.0.38

Calculates a CRC for byte data in memory using the CRC algorithm specified by crcAlg. Possible algorithms are:

  • crc-32 - This is the CRC used in the Zip file format.
  • crc8

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CrcFile
function CrcFile(crcAlg: WideString; path: WideString): Integer;
Introduced in version 9.5.0.38

Calculates the CRC for a file's contents using the CRC algorithm specified by crcAlg. Possible algorithms are:

  • crc-32 - This is the CRC used in the Zip file format.
  • crc8

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CrcFileAsync (1)
function CrcFileAsync(crcAlg: WideString; path: WideString): TChilkatTask;
Introduced in version 9.5.0.38

Creates an asynchronous task to call the CrcFile method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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CreateP7M
function CreateP7M(inFilename: WideString; p7mPath: WideString): Integer;

Signs the contents of inFilename and writes the enveloping (i.e. opaque) PKCS7 signature (.p7m) to p7mPath.

In a PKCS#7/CMS signature, the signer computes a cryptographic hash (e.g. SHA-256) of the data, then uses their private key to sign that hash.

The signature = Sign( Hash(data) )

This signed hash is what gets stored in the signature file. For enveloping/opaque signatures, the signed data is also stored in the signature file.

Set the HashAlgorithm property to specify the hash algorithmg. The valid options are sha256, sha1, sha384, and sha512.

Returns 1 for success, 0 for failure.

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CreateP7MAsync (1)
function CreateP7MAsync(inFilename: WideString; p7mPath: WideString): TChilkatTask;

Creates an asynchronous task to call the CreateP7M method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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CreateP7S
function CreateP7S(inFilename: WideString; p7sPath: WideString): Integer;

Signs the contents of inFilename and writes the detached PKCS7 signature (.p7s) to p7sPath.

In a PKCS#7/CMS detached signature, the signer computes a cryptographic hash (e.g. SHA-256) of the data, then uses their private key to sign that hash.

The signature = Sign( Hash(data) )

This signed hash is what gets stored in the signature file.

Set the HashAlgorithm property to specify the hash algorithmg. The valid options are sha256, sha1, sha384, and sha512.

Returns 1 for success, 0 for failure.

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CreateP7SAsync (1)
function CreateP7SAsync(inFilename: WideString; p7sPath: WideString): TChilkatTask;

Creates an asynchronous task to call the CreateP7S method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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DecodeString
function DecodeString(inStr: WideString; charset: WideString; encoding: WideString): WideString;

Decodes from an encoding back to the original string. The encoding can be set to any of the following strings: base64, hex, quoted-printable, url, base32, Q, B, url_rc1738, url_rfc2396, url_rfc3986, url_oauth, uu, modBase64, or html (for HTML entity encoding).

Returns a zero-length WideString on failure

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DecryptBd
function DecryptBd(bd: TChilkatBinData): Integer;
Introduced in version 9.5.0.67

Decrypts the contents of bd. This method can do either symmetric key decryption or CMS public key decryption (e.g., PKCS#7 EnvelopedData).

Before calling this method for symmetric key decryption (e.g., AES, ChaCha20, Blowfish, etc.), ensure the following setup:

  1. Define the encryption algorithm using the CryptAlgorithm property.
  2. Specify the encryption key length with the KeyLength property.
  3. Establish the cipher mode through the CipherMode property.
  4. Use the SetEncodedIV method to set the IV, if needed by the cipher mode.
  5. Set the encryption key with the SetEncodedKey method.
  6. Ensure the PaddingScheme property matches the encryptor's value.

When calling this method for public key decryption (i.e. decrypting a PKCS7 CMS message), the following setup is required:

  1. The CryptAlgorithm property should be set to the string "pki".
  2. Optionally specify the certificate to be used for decryption by calling SetDecryptCert. If SetDecryptCert is not called, then Chilkat will automatically search certificate sources (Windows certificate stores, Apple keychain, etc.) for the required certificate.

Returns 1 for success, 0 for failure.

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DecryptBytes
function DecryptBytes(data: OleVariant): OleVariant;

Decrypts a byte array and returns the unencrypted byte array. The property settings used when encrypting the data must match the settings when decrypting. Specifically, the CryptAlgorithm, CipherMode, PaddingScheme, KeyLength, IV, and SecretKey properties must match.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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DecryptBytesENC
function DecryptBytesENC(str: WideString): OleVariant;

Decrypts string-encoded encrypted data and returns the unencrypted byte array. Data encrypted with EncryptBytesENC can be decrypted with this method. The property settings used when encrypting the data must match the settings when decrypting. Specifically, the EncodingMode, CryptAlgorithm, CipherMode, PaddingScheme, KeyLength, IV, and SecretKey properties must match.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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DecryptEncoded
function DecryptEncoded(encodedEncryptedData: WideString): WideString;

Decrypts encoded encrypted data, and returns the decrypted data as a binary encoded string. For example:

Input → Decode EncodingMode → Decrypt → Encode EncodingMode → Output

The encoding (e.g. base64, hex, etc.) is determined by the EncodingMode property.

This method supports symmetric key and public key decryption. For more information on properties that affect decryption, such as CryptAlgorithm, CipherMode, etc., refer to the DecryptBd method documentation.

Returns a zero-length WideString on failure

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DecryptSb
function DecryptSb(bdIn: TChilkatBinData; sbOut: TChilkatStringBuilder): Integer;
Introduced in version 9.5.0.67

This function is intended for use when the expected decrypted output is text. It decrypts the contents of bdIn and appends the resulting string to sbOut. Ensure that the Charset property, such as utf-8, matches the one used during encryption to interpret the decrypted bytes correctly as characters.

Input → Decrypt → Interpret Bytes according to Charset → Append to StringBuilder

This method supports symmetric key and public key decryption. For more information on properties that affect decryption, such as CryptAlgorithm, CipherMode, etc., refer to the DecryptBd method documentation.

Returns 1 for success, 0 for failure.

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DecryptSecureENC
function DecryptSecureENC(cipherText: WideString; secureStr: TChilkatSecureString): Integer;
Introduced in version 9.5.0.71

This function is intended for use when the expected decrypted output is text. It decrypts binary encoded encrypted bytes passed in cipherText and appends the resulting string to secureStr. Ensure that the Charset property, such as utf-8, matches the one used during encryption to interpret the decrypted bytes correctly as characters.

Input → Decode using EncodingMode → Decrypt → Interpret Bytes according to Charset → Append to Secure String

The encoding (e.g. base64, hex, etc.) is determined by the EncodingMode property.

This method supports symmetric key and public key decryption. For more information on properties that affect decryption, such as CryptAlgorithm, CipherMode, etc., refer to the DecryptBd method documentation.

Returns 1 for success, 0 for failure.

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DecryptString
function DecryptString(data: OleVariant): WideString;

Decrypts a previously encrypted string, using the Charset property to interpret the decrypted bytes as characters.

Returns a zero-length WideString on failure

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DecryptStringENC
function DecryptStringENC(str: WideString): WideString;

This function is intended for use when the expected decrypted output is text. It decrypts binary encoded encrypted bytes passed in str and appends the resulting string to ARG2. Ensure that the Charset property, such as utf-8, matches the one used during encryption to interpret the decrypted bytes correctly as characters.

Input → Decode using EncodingMode → Decrypt → Interpret Bytes according to Charset → Output

The encoding (e.g. base64, hex, etc.) is determined by the EncodingMode property.

This method supports symmetric key and public key decryption. For more information on properties that affect decryption, such as CryptAlgorithm, CipherMode, etc., refer to the DecryptBd method documentation.

Returns a zero-length WideString on failure

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Encode
function Encode(byteData: OleVariant; encoding: WideString): WideString;

Encode binary data to base64, hex, quoted-printable, or URL-encoding. The encoding can be set to any of the following strings: base64, hex, quoted-printable (or qp), url, base32, Q, B, url_rc1738, url_rfc2396, url_rfc3986, url_oauth, uu, modBase64, or html (for HTML entity encoding).

Returns a zero-length WideString on failure

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EncodeInt
function EncodeInt(value: Integer; numBytes: Integer; littleEndian: Integer; encoding: WideString): WideString;
Introduced in version 9.5.0.77

Encodes an integer to N bytes and returns in the specified encoding. If littleEndian is 1, then little-endian byte ordering is used. Otherwise big-endian byte order is used.

Returns a zero-length WideString on failure

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EncodeString
function EncodeString(strToEncode: WideString; charsetName: WideString; toEncodingName: WideString): WideString;

Encodes a string. The toEncodingName can be set to any of the following strings: base64, hex, quoted-printable, url, base32, Q, B, url_rc1738, url_rfc2396, url_rfc3986, url_oauth, uu, modBase64, or html (for HTML entity encoding). The charsetName is important, and usually you'll want to specify ansi. For example, if the string ABC is to be encoded to hex using ANSI, the result will be 414243. However, if unicode is used, the result is 410042004300.

Returns a zero-length WideString on failure

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EncryptBd
function EncryptBd(bd: TChilkatBinData): Integer;
Introduced in version 9.5.0.67

Encrypts the contents of bd. This method can do either symmetric key encryption or CMS public key encryption (e.g., PKCS#7 EnvelopedData).

Before calling this method for symmetric key encryption (e.g., AES, ChaCha20, Blowfish, etc.), ensure the following setup:

  1. Define the encryption algorithm using the CryptAlgorithm property.
  2. Specify the encryption key length with the KeyLength property.
  3. Establish the cipher mode through the CipherMode property.
  4. Use the SetEncodedIV method to set the IV, if needed by the cipher mode.
  5. Set the encryption key with the SetEncodedKey method.
  6. Set the PaddingScheme property if needing something different than the default.

When calling this method for public key encryption (i.e. creating a PKCS7 CMS message), the following setup is required:

  1. The CryptAlgorithm property should be set to the string "pki".
  2. To specify the encryption certificate, use SetEncryptCert. For multiple certificates, call AddEncryptCert for each one.

Returns 1 for success, 0 for failure.

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EncryptBytes
function EncryptBytes(data: OleVariant): OleVariant;

Encrypts a byte array. The minimal set of properties that should be set before encrypting are: CryptAlgorithm, SecretKey. Other properties that control encryption are: CipherMode, PaddingScheme, KeyLength, IV. When decrypting, all property settings must match otherwise garbled data is returned.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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EncryptBytesENC
function EncryptBytesENC(data: OleVariant): WideString;

Encrypts a byte array and returns the encrypted data as an encoded (printable) string. The minimal set of properties that should be set before encrypting are: CryptAlgorithm, SecretKey, EncodingMode. Other properties that control encryption are: CipherMode, PaddingScheme, KeyLength, IV. When decrypting, all property settings must match otherwise garbled data is returned. The encoding of the string that is returned is controlled by the EncodingMode property, which can be set to Base64, QP, or Hex.

Returns a zero-length WideString on failure

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EncryptEncoded
function EncryptEncoded(str: WideString): WideString;

Encrypts binary-encoded data and returns it as a binary-encoded string. For example:

Input → Decode EncodingMode → Encrypt → Encode EncodingMode → Output

The encoding (e.g. base64, hex, etc.) is determined by the EncodingMode property.

This method supports symmetric key and public key decryption. For more information on properties that affect decryption, such as CryptAlgorithm, CipherMode, etc., refer to the method documentation.

Returns a zero-length WideString on failure

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EncryptSb
function EncryptSb(sbIn: TChilkatStringBuilder; bdOut: TChilkatBinData): Integer;
Introduced in version 9.5.0.67

Encrypts text and appends the encrypted bytes in bdOut. The Charset property, such as utf-8, determines the actual bytes that are encrypted.

StringBuilder → Get bytes according to Charset → Encrypt → Append to BinData

This method supports symmetric key and public key encryption. For more information on properties that affect encryption, such as CryptAlgorithm, CipherMode, etc., refer to the EncryptBd method documentation.

Returns 1 for success, 0 for failure.

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EncryptSecureENC
function EncryptSecureENC(secureStr: TChilkatSecureString): WideString;
Introduced in version 9.5.0.71

Identical to EncryptStringENC, except the clear-text contained within the secureStr is encrypted and returned.

Returns a zero-length WideString on failure

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EncryptString
function EncryptString(str: WideString): OleVariant;

Encrypts a string and returns the result as bytes, with the Charset property determining the specific byte encoding of what gets encrypted.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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EncryptStringENC
function EncryptStringENC(str: WideString): WideString;

Encrypts a string and returns the encrypted bytes as a binary encoded string. The EncodingMode property determines the binary encoding, such as base64, hex, hex_lower, base64url, base58, etc. The Charset property determines the actual bytes that are encrypted.

Returns a zero-length WideString on failure

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GenEncodedSecretKey
function GenEncodedSecretKey(password: WideString; encoding: WideString): WideString;

Important: In the v9.5.0.49 release, a bug involving this method was introduced: The encoding is ignored and instead the encoding used is the current value of the EncodingMode property. The workaround is to make sure the EncodingMode property is set to the value of the desired output encoding. This problem will be fixed in v9.5.0.50.

Identical to the GenerateSecretKey method, except it returns the binary secret key as a string encoded according to encoding, which may be base64, hex, url, etc. Please see the documentation for GenerateSecretKey for more information.

Returns a zero-length WideString on failure

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GenerateUuid
function GenerateUuid(): WideString;
Introduced in version 9.5.0.55

Generates a random UUID string having standard UUID format, such as de305d54-75b4-431b-adb2-eb6b9e546014.

Note: This generates a version 4 UUID using random byte values. See RFC 4122.

Returns a zero-length WideString on failure

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GenRandomBytesENC
function GenRandomBytesENC(numBytes: Integer): WideString;

Generates numBytes random bytes and returns them as an encoded string. The encoding, such as base64, hex, etc. is controlled by the EncodingMode property.

Returns a zero-length WideString on failure

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GetEncodedAad
function GetEncodedAad(encoding: WideString): WideString;
Introduced in version 9.5.0.55

Returns the authenticated additional data as an encoded string. The encoding argument can be set to any of the following strings: base64, hex, quoted-printable, or url.

The Aad is used when the CipherMode is gcm (Galois/Counter Mode), which is a mode valid for symmetric ciphers that have a block size of 16 bytes, such as AES or Twofish.

Returns a zero-length WideString on failure

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GetEncodedAuthTag
function GetEncodedAuthTag(encoding: WideString): WideString;
Introduced in version 9.5.0.55

Returns the authentication tag as an encoded string. The encoding argument may be set to any of the following strings: base64, hex, quoted-printable, or url. The authentication tag is an output of authenticated encryption modes such as GCM when encrypting. When GCM mode decrypting, the authenticate tag is set by the application and is the expected result.

The authenticated tag plays a role when the CipherMode is gcm (Galois/Counter Mode), which is a mode valid for symmetric block ciphers that have a block size of 16 bytes, such as AES or Twofish.

Returns a zero-length WideString on failure

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GetEncodedIV
function GetEncodedIV(encoding: WideString): WideString;

Returns the initialization vector as an encoded string. The encoding argument can be set to any of the following strings: base64, hex, quoted-printable, or url.

Returns a zero-length WideString on failure

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GetEncodedKey
function GetEncodedKey(encoding: WideString): WideString;

Returns the secret key as an encoded string. The encoding argument can be set to any of the following strings: base64, hex, quoted-printable, or url.

Returns a zero-length WideString on failure

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GetEncodedSalt
function GetEncodedSalt(encoding: WideString): WideString;

Returns the password-based encryption (PBE) salt bytes as an encoded string. The encoding argument can be set to any of the following strings: base64, hex, quoted-printable, or url.

Returns a zero-length WideString on failure

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GetLastJsonData
procedure GetLastJsonData(json: TChilkatJsonObject);
Introduced in version 11.0.0

Provides information about what transpired in the last method called. For many methods, there is no information. For some methods, details about what transpired can be obtained via LastJsonData. For example, after calling a method to verify a signature, the LastJsonData will return JSON with details about the algorithms used for signature verification.

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GetSignatureSigningTimeStr
function GetSignatureSigningTimeStr(index: Integer): WideString;

This method retrieves the signing time of the Nth certificate used in a digital signature, after verification. The first certificate's signing time is at index index 0. The NumSignerCerts property indicates the total number of signing certificates (typically, only one is used).

Note: Before retrieving the signing time for a certificate, use the HasSignatureSigningTime method to check its availability. Skip indices without a signing time.

The signing time is returned in RFC822 string format.

Returns a zero-length WideString on failure

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GetSignedAttributes
function GetSignedAttributes(signerIndex: Integer; pkcs7Der: TChilkatBinData; sbJson: TChilkatStringBuilder): Integer;
Introduced in version 9.5.0.75

Extracts the signed (authenticated) attributes for the Nth signer. In most cases, a signature has only one signer, and the signerIndex should equal 0 to specify the 1st (and only) signer.

The binary PKCS7 is passed in pkcs7Der. On success, the sbJson will contain the signed attributes in JSON format.

Sample JSON output:

{
  <code>signedAttributes</code>: [
    {
      <code>oid</code>: <code>1.2.840.113549.1.9.3</code>,
      <code>name</code>: <code>Content Type</code>
    },
    {
      <code>oid</code>: <code>1.2.840.113549.1.9.5</code>,
      <code>name</code>: <code>Signing Time</code>
    },
    {
      <code>oid</code>: <code>1.2.840.113549.1.9.4</code>,
      <code>name</code>: <code>Message Digest</code>
    },
    {
      <code>oid</code>: <code>1.2.840.113549.1.9.16.2.47</code>,
      <code>name</code>: <code>Signing Certificate V2</code>
    }
  ]
}

Returns 1 for success, 0 for failure.

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HashBdENC
function HashBdENC(bd: TChilkatBinData): WideString;
Introduced in version 9.5.0.66

Hashes the bytes in bd and returns the hash as a binary-encoded string. The hash algorithm is determined by the HashAlgorithm property, while the encoding is specified by the EncodingMode property. Encoding options include base64, hex, base64url, or others listed at the link below.

Returns a zero-length WideString on failure

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HashBeginBytes
function HashBeginBytes(data: OleVariant): Integer;

To hash binary data in chunks, start by hashing the first chunk using this method. For additional chunks, use the HashMoreBytes method as needed. Complete the process with HashFinal or HashFinalENC to obtain the hash result. The hash algorithm used is determined by the HashAlgorithm property setting.

Returns 1 for success, 0 for failure.

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HashBeginString
function HashBeginString(strData: WideString): Integer;

To hash a large amount of text, start by processing the first chunk using this method. For subsequent chunks, use the HashMoreString method as needed. Conclude by calling HashFinal (or HashFinalENC) to obtain the final result. The hash algorithm is determined by the HashAlgorithm property setting.

Returns 1 for success, 0 for failure.

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HashBytes
function HashBytes(data: OleVariant): OleVariant;

Hashes a byte array using the algorithm specified by the HashAlgorithm property.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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HashBytesENC
function HashBytesENC(data: OleVariant): WideString;

Hashes a byte array and returns the hash as a binary encoded string.

The hash algorithm is specified by the HashAlgorithm property, The encoding is controlled by the EncodingMode property, which can be set to base64, hex, base64url, or any of the encodings listed at the link below.

Returns a zero-length WideString on failure

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HashChunkBd
function HashChunkBd(firstChunk: Integer; bd: TChilkatBinData): Integer;
Introduced in version 11.1.0

Start or continue hashing data in chunks. Set firstChunk to 1 for the first chunk, and 0 for subsequent chunks. Finish by calling HashFinalENC to obtain the result. The hash algorithm used is determined by the HashAlgorithm property.

Returns 1 for success, 0 for failure.

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HashFile
function HashFile(path: WideString): OleVariant;

Hashes a file using the specified HashAlgorithm and returns the hash bytes. The file is processed in streaming mode, allowing any file size to be hashed efficiently while minimizing memory usage.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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HashFileAsync (1)
function HashFileAsync(path: WideString): TChilkatTask;

Creates an asynchronous task to call the HashFile method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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HashFileENC
function HashFileENC(path: WideString): WideString;

Hashes a file and returns the hash as an encoded string.

The hash algorithm is specified by the HashAlgorithm property, The encoding is controlled by the EncodingMode property, which can be set to base64, hex, base64url, or any of the encodings listed at the link below.

Any size file is supported because the file is hashed internally in streaming mode (keeping memory usage low and constant).

Returns a zero-length WideString on failure

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HashFileENCAsync (1)
function HashFileENCAsync(path: WideString): TChilkatTask;

Creates an asynchronous task to call the HashFileENC method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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HashFinal
function HashFinal(): OleVariant;

Finalizes a multi-step hash computation and returns the hash bytes.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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HashFinalENC
function HashFinalENC(): WideString;

Finalizes a multi-step hash computation and returns the hash bytes encoded according to the EncodingMode property setting.

Returns a zero-length WideString on failure

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HashMoreBytes
function HashMoreBytes(data: OleVariant): Integer;
Introduced in version 9.5.0.82

Adds more bytes to the hash currently under computation. (See HashBeginBytes)

Returns 1 for success, 0 for failure.

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HashMoreString
function HashMoreString(strData: WideString): Integer;

Adds more text to the hash currently under computation. (See HashBeginString)

Returns 1 for success, 0 for failure.

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HashString
function HashString(str: WideString): OleVariant;

Hashes a string using the Charset property to determine the bytes and returns the hash.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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HashStringENC
function HashStringENC(str: WideString): WideString;

Hashes a string and returns the hash bytes as an encoded string.

The hash algorithm is specified by the HashAlgorithm property, The encoding is controlled by the EncodingMode property, which can be set to base64, hex, base64url, or any of the encodings listed at the link below.

The Charset property controls the character encoding of the string that is hashed. Languages such as VB.NET, C#, and Visual Basic work with Unicode strings. If it is desired to hash Unicode directly (2 bytes/char) then set the Charset property to Unicode. To implicitly convert to another charset before hashing, set the Charset property to the desired charset. For example, if Charset is set to iso-8859-1, the input string is first implicitly converted to iso-8859-1 (1 byte per character) before hashing. The full list of supported charsets is listed in the EncryptString method description.

Returns a zero-length WideString on failure

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HasSignatureSigningTime
function HasSignatureSigningTime(index: Integer): Integer;

This method can be called after a digital signature has been verified by one of the Verify* methods. Returns 1 if a signing time for the Nth certificate is available and can be retrieved by either the GetSignatureSigningTime or GetSignatureSigningTimeStr methods.

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Hotp
function Hotp(secret: WideString; secretEnc: WideString; counterHex: WideString; numDigits: Integer; truncOffset: Integer; hashAlg: WideString): WideString;
Introduced in version 9.5.0.77

Implements RFC 4226: HOTP: An HMAC-Based One-Time Password Algorithm. The arguments to this method are:

  • secret: The shared secret in an enocded representation such as base64, hex, ascii, etc.
  • secretEnc: The encoding of the shared secret, such as base64
  • counterHex: The 8-byte counter in hexidecimal format.
  • numDigits: The number of decimal digits to return.
  • truncOffset: Normally set this to -1 for dynamic truncation. Otherwise can be set in the range 0..15.
  • hashAlg: Normally set to sha1. Can be set to other hash algorithms such as sha256, sha512, etc.

Returns a zero-length WideString on failure

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LastDecryptCert
function LastDecryptCert(cert: TChilkatCert): Integer;
Introduced in version 11.0.0

Returns in cert the last certificate used for public-key decryption.

Returns 1 for success, 0 for failure.

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LastSignerCert
function LastSignerCert(index: Integer; cert: TChilkatCert): Integer;
Introduced in version 11.0.0

Returns the Nth certificate used for signing in cert. This method can be called after verifying a digital signature to get the signer certs. The 1st certificate is at index 0. The NumSignerCerts property contains the total number of signing certificates. (Typically, a single certificate is used in creating a digital signature.)

Returns 1 for success, 0 for failure.

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LoadTaskCaller
function LoadTaskCaller(task: TChilkatTask): Integer;
Introduced in version 9.5.0.80

Loads the caller of the task's async method.

Returns 1 for success, 0 for failure.

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MacBdENC
function MacBdENC(bd: TChilkatBinData): WideString;
Introduced in version 9.5.0.66

Computes a Message Authentication Code (MAC) for the bytes in bd using the algorithm defined in the MacAlgorithm property. The result is then encoded to a string using the format specified by the EncodingMode property (e.g., base64, hex). The HashAlgorithm property setting determines the hash algorithm used internally. (A MAC algorithm like HMAC uses a hash function such as SHA-256 internally, along with a secret key, to create a secure and verifiable digest.)

Returns a zero-length WideString on failure

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MacBytes
function MacBytes(inBytes: OleVariant): OleVariant;
Introduced in version 9.5.0.55

Computes a Message Authentication Code using the algorithm defined in the MacAlgorithm property. The HashAlgorithm property setting determines the hash algorithm used internally. (A MAC algorithm like HMAC uses a hash function such as SHA-256 internally, along with a secret key, to create a secure and verifiable digest.)

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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MacBytesENC
function MacBytesENC(inBytes: OleVariant): WideString;

Computes a Message Authentication Code using the MAC algorithm specified in the MacAlgorithm property. The result is encoded to a string using the encoding (base64, hex, etc.) specified by the EncodingMode property.

Returns a zero-length WideString on failure

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MacString
function MacString(inText: WideString): OleVariant;
Introduced in version 9.5.0.55

Computes a Message Authentication Code using the specified MacAlgorithm property. The Charset property determines the actual bytes presented to the MAC algorithm. The HashAlgorithm property setting determines the hash algorithm used internally. (A MAC algorithm like HMAC uses a hash function such as SHA-256 internally, along with a secret key, to create a secure and verifiable digest.)

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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MacStringENC
function MacStringENC(inText: WideString): WideString;
Introduced in version 9.5.0.55

Computes a Message Authentication Code using the MAC algorithm specified in the MacAlgorithm property. The result is encoded to a string using the encoding (base64, hex, etc.) specified by the EncodingMode property.

Returns a zero-length WideString on failure

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MySqlAesDecrypt
function MySqlAesDecrypt(strEncryptedHex: WideString; strPassword: WideString): WideString;

Matches MySQL's AES_DECRYPT function. strEncryptedHex is a hex-encoded string of the AES encrypted data. The return value is the original unencrypted string.

Returns a zero-length WideString on failure

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MySqlAesEncrypt
function MySqlAesEncrypt(strData: WideString; strPassword: WideString): WideString;

Matches MySQL's AES_ENCRYPT function. The return value is a hex-encoded string of the encrypted data. The equivalent call in MySQL would look like this: HEX(AES_ENCRYPT('The quick brown fox jumps over the lazy dog','password'))

Returns a zero-length WideString on failure

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OpaqueSignBd
function OpaqueSignBd(bd: TChilkatBinData): Integer;
Introduced in version 9.5.0.67

Digitally signs the contents of bd. If successful, the contents of bd are replaced with the PKCS#7 signed-data, which embeds the original data within the signature. Ensure a certificate is set using SetSigningCert before invoking this method. The HashAlgorithm property specifies the hash algorithm for creating the data's hash during signing.

Returns 1 for success, 0 for failure.

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OpaqueSignBdAsync (1)
function OpaqueSignBdAsync(bd: TChilkatBinData): TChilkatTask;
Introduced in version 9.5.0.67

Creates an asynchronous task to call the OpaqueSignBd method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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OpaqueSignBytes
function OpaqueSignBytes(data: OleVariant): OleVariant;

Digitally signs a binary data and returns the signature in PKCS#7 signed-data format, which embeds the original data within the signature. Ensure a certificate is set using SetSigningCert before invoking this method. The HashAlgorithm property specifies the hash algorithm for creating the data's hash during signing.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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OpaqueSignBytesAsync (1)
function OpaqueSignBytesAsync(data: OleVariant): TChilkatTask;

Creates an asynchronous task to call the OpaqueSignBytes method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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OpaqueSignBytesENC
function OpaqueSignBytesENC(data: OleVariant): WideString;

Digitally signs a binary data and returns a PKCS#7 signed-data signature binary-encoded as a string. The returned signature embeds the original data. Ensure to set a certificate by calling SetSigningCert beforehand. The EncodingMode property determines the output encoding such as base64, hex, base64_mime, etc. The HashAlgorithm property specifies the hash algorithm for creating the data's hash during signing.

Returns a zero-length WideString on failure

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OpaqueSignBytesENCAsync (1)
function OpaqueSignBytesENCAsync(data: OleVariant): TChilkatTask;

Creates an asynchronous task to call the OpaqueSignBytesENC method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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OpaqueSignString
function OpaqueSignString(str: WideString): OleVariant;

Digitally signs a string and returns PKCS#7 signed-data. The Charset property determines the actual bytes that are hashed and signed. The HashAlgorithm property specifies the hash algorithm for creating the data's hash during signing.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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OpaqueSignStringAsync (1)
function OpaqueSignStringAsync(str: WideString): TChilkatTask;

Creates an asynchronous task to call the OpaqueSignString method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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OpaqueSignStringENC
function OpaqueSignStringENC(str: WideString): WideString;

Digitally signs a string and returns PKCS#7 signed-data as a binary encoded string. The EncodingMode property determines the binary encoding, such as base64, hex, hex_lower, base64_mime, etc. The Charset property determines the actual bytes that are hashed and signed. The HashAlgorithm property specifies the hash algorithm for creating the data's hash during signing.

Returns a zero-length WideString on failure

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OpaqueSignStringENCAsync (1)
function OpaqueSignStringENCAsync(str: WideString): TChilkatTask;

Creates an asynchronous task to call the OpaqueSignStringENC method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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OpaqueVerifyBd
function OpaqueVerifyBd(bd: TChilkatBinData): Integer;
Introduced in version 9.5.0.67

The method performs in-place verification of the PKCS#7 signed-data content of bd. If the signature is successfully verified, the content of bd is replaced with the original data, and the method returns 1. If verification fails, bd remains unchanged, and the method returns 0. Afterwards, you can retrieve signer certificates by using the NumSignerCerts property and the GetSignerCert method.

Returns 1 for success, 0 for failure.

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OpaqueVerifyBytes
function OpaqueVerifyBytes(p7m: OleVariant): OleVariant;

Verifies a PKCS#7 signed-data signature and returns the original data. If the signature fails verification, the returned data will be empty. Afterwards, you can retrieve signer certificates by using the NumSignerCerts property and the GetSignerCert method.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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OpaqueVerifyBytesENC
function OpaqueVerifyBytesENC(p7m: WideString): OleVariant;

Verifies a PKCS#7 signed-data signature and returns the original data. If the signature fails verification, the returned data will be empty. The p7m is a binary-encoded string, using the encoding set by the EncodingMode property. Afterwards, you can retrieve signer certificates by using the NumSignerCerts property and the GetSignerCert method.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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OpaqueVerifyString
function OpaqueVerifyString(p7m: OleVariant): WideString;

This function verifies a PKCS#7 signed-data signature and returns the original text data. If the signature does not verify successfully, it returns an empty string. The Charset property specifies how the original data bytes are converted to characters. You can obtain signer certificates using the NumSignerCerts property and the GetSignerCert method.

Returns a zero-length WideString on failure

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OpaqueVerifyStringENC
function OpaqueVerifyStringENC(p7m: WideString): WideString;

This function verifies a PKCS#7 signed-data binary-encoded signature and returns the original text data. The EncodingMode property determines how p7m is decoded to bytes. If the signature does not verify successfully, it returns an empty string. The Charset property specifies how the original data bytes are converted to characters. You can obtain signer certificates using the NumSignerCerts property and the GetSignerCert method.

Returns a zero-length WideString on failure

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Pbkdf1
function Pbkdf1(password: WideString; charset: WideString; hashAlg: WideString; salt: WideString; iterationCount: Integer; outputKeyBitLen: Integer; encoding: WideString): WideString;

Implements the PBKDF1 algorithm (Password Based Key Derivation Function #1). The password is converted to the character encoding represented by charset before being passed (internally) to the key derivation function. The hashAlg may be md5, sha1, md2, etc. The salt should be random data at least 8 bytes (64 bits) in length. (The GenRandomBytesENC method is good for generating a random salt value.) The iterationCount should be no less than 1000. The length (in bits) of the derived key output by this method is controlled by outputKeyBitLen. The encoding argument may be base64, hex, etc. It controls the encoding of the output, and the expected encoding of the salt. The derived key is returned.

Note: Starting in version 9.5.0.47, if the charset is set to one of the keywords hex or base64, then the password will be considered binary data that is hex or base64 encoded. The bytes will be decoded and used directly as a binary password.

Returns a zero-length WideString on failure

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Pbkdf2
function Pbkdf2(password: WideString; charset: WideString; hashAlg: WideString; salt: WideString; iterationCount: Integer; outputKeyBitLen: Integer; encoding: WideString): WideString;

Implements the PBKDF2 algorithm as follows:

  1. Convert password to the character encoding specified by charset before using it in the key derivation function.
  2. hashAlg specifies the hash algorithm. Options include sha256, sha384, sha512, md5, sha1, md2, or any algorithm listed in the HashAlgorithm property.
  3. Provide a random salt value that is at least 8 bytes (64 bits) long. Use methods like GenRandomBytesENC to generate this salt value.
  4. Ensure iterationCount is 1000 or greater.
  5. Control the length of the derived key output using outputKeyBitLen.
  6. Set encoding to specify the encoding format for the output and the expected encoding for salt. Options include base64 and hex.

The derived key is the output of this process. Internally, PBKDF2 uses a pseudorandom function (PRF), specifically a keyed HMAC. The hash algorithm chosen with hashAlg dictates this PRF; for example, SHA256 uses HMAC-SHA256, while SHA1 uses HMAC-SHA1.

Note: If charset is hex or base64, password is treated as binary data. It will be decoded and used directly as a binary password. SHA256 uses HMAC-SHA256, while SHA1 uses HMAC-SHA1.

PBKDF1 and PBKDF2 are both key derivation functions used to strengthen passwords for cryptographic purposes, but PBKDF2 is the improved version.

  • PBKDF1: Older and limited—it can only generate small keys (up to the hash function’s output size), making it less flexible and secure.
  • PBKDF2: More advanced—it can generate longer keys, is more resistant to attacks, and is widely recommended for modern security needs.

In short, PBKDF2 is stronger and more versatile than PBKDF1.

Returns a zero-length WideString on failure

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RandomizeIV
procedure RandomizeIV();

Sets the initialization vector to a random value.

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RandomizeKey
procedure RandomizeKey();

Sets the secret key to a random value.

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ReEncode
function ReEncode(encodedData: WideString; fromEncoding: WideString; toEncoding: WideString): WideString;

This tool allows for conversion between different encodings, such as from base64 to hex. It's particularly useful in programming environments where handling byte arrays is cumbersome. The encodings that can be specified for fromEncoding and toEncoding include: Base64, base64Url, modBase64, Base32, Base58, UU, QP (quoted-printable), URL (URL-encoding), Hex, Q, B, url_oauth, url_rfc1738, url_rfc2396, and url_rfc3986. Note that these encodings are case-insensitive.

Returns a zero-length WideString on failure

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SetDecryptCert
function SetDecryptCert(cert: TChilkatCert): Integer;

Sets the digital certificate to be used for decryption when the CryptAlgorithm property is set to PKI. A private key is required for decryption. Because this method only specifies the certificate, a prerequisite is that the certificate w/ private key must have been pre-installed on the computer. Private keys are stored in the Windows Protected Store (either a user account specific store, or the system-wide store). The Chilkat component will automatically locate and find the certificate's corresponding private key from the protected store when decrypting.

Returns 1 for success, 0 for failure.

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SetDecryptCert2
function SetDecryptCert2(cert: TChilkatCert; key: TPrivateKey): Integer;

Sets the digital certificate to be used for decryption when the CryptAlgorithm property is set to PKI. The private key is supplied in the 2nd argument to this method, so there is no requirement that the certificate be pre-installed on a computer before decrypting (if this method is called).

Returns 1 for success, 0 for failure.

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SetEncodedAad
function SetEncodedAad(aadStr: WideString; encoding: WideString): Integer;
Introduced in version 9.5.0.55

Sets the authenticated additional data from an encoded string. The authenticated additional data (AAD), if any, is used in authenticated encryption modes such as GCM. The aadStr argument can be set to any of the following strings: base64, hex, quoted-printable, ascii, or url.

The Aad is used when the CipherMode is gcm (Galois/Counter Mode), which is a mode valid for symmetric ciphers that have a block size of 16 bytes, such as AES or Twofish.

Returns 1 for success, 0 for failure.

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SetEncodedAuthTag
function SetEncodedAuthTag(authTagStr: WideString; encoding: WideString): Integer;
Introduced in version 9.5.0.55

Sets the expected authenticated tag from an encoded string. The authenticated tag is used in authenticated encryption modes such as GCM. An application would set the expected authenticated tag prior to decrypting. The authTagStr argument can be set to any of the following strings: base64, hex, quoted-printable, ascii, or url.

The authenticated tag plays a role when the CipherMode is gcm (Galois/Counter Mode), which is a mode valid for symmetric block ciphers that have a block size of 16 bytes, such as AES or Twofish.

Note: You can set the authenticated tag to the special value FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF (16 0xFF bytes) to prevent Chilkat from checking the auth tag after decrypting.

Returns 1 for success, 0 for failure.

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SetEncodedIV
procedure SetEncodedIV(ivStr: WideString; encoding: WideString);

Sets the initialization vector from an encoded string. The encoding argument can be set to any of the following strings: base64, hex, quoted-printable, ascii, or url.

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SetEncodedKey
procedure SetEncodedKey(keyStr: WideString; encoding: WideString);

Sets the secret key from an encoded string. The encoding argument can be set to any of the following strings: base64, hex, quoted-printable, ascii, or url.

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SetEncodedSalt
procedure SetEncodedSalt(saltStr: WideString; encoding: WideString);

Sets the password-based encryption (PBE) salt bytes from an encoded string. The encoding argument can be set to any of the following strings: base64, hex, quoted-printable, ascii, or url.

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SetEncryptCert
function SetEncryptCert(cert: TChilkatCert): Integer;

Tells the encryption library to use a specific digital certificate for public-key encryption. To encrypt with multiple certificates, call AddEncryptCert once for each certificate. (Calling this method is the equivalent of calling ClearEncryptCerts followed by AddEncryptCert.)

Returns 1 for success, 0 for failure.

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SetMacKeyBytes
function SetMacKeyBytes(keyBytes: OleVariant): Integer;
Introduced in version 9.5.0.55

Sets the MAC key to be used for one of the Mac methods.

Returns 1 for success, 0 for failure.

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SetMacKeyEncoded
function SetMacKeyEncoded(key: WideString; encoding: WideString): Integer;
Introduced in version 9.5.0.55

Sets the MAC key to be used for one of the Mac methods. The encoding can be set to any of the following strings: base64, hex, quoted-printable, or url.

Returns 1 for success, 0 for failure.

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SetMacKeyString
function SetMacKeyString(key: WideString): Integer;
Introduced in version 9.5.0.55

Sets the MAC key to be used for one of the Mac methods.

Returns 1 for success, 0 for failure.

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SetSecretKeyViaPassword
procedure SetSecretKeyViaPassword(password: WideString);

Accepts a password string and (internally) generates a binary secret key of the appropriate bit length and sets the SecretKey property. This method should only be used if you are using Chilkat for both encryption and decryption because the password-to-secret-key algorithm would need to be identical for the decryption to match the encryption.

There is no minimum or maximum password length. The password string is transformed to a binary secret key by computing the MD5 digest (of the utf-8 password) to obtain 16 bytes. If the KeyLength is greater than 16 bytes, then the MD5 digest of the Base64 encoding of the utf-8 password is added. A max of 32 bytes of key material is generated, and this is truncated to the actual KeyLength required. The example below shows how to manually duplicate the computation.

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SetSigningCert
function SetSigningCert(cert: TChilkatCert): Integer;

Specifies a certificate to be used when creating PKCS7 digital signatures. Signing requires both a certificate and private key. In this case, the private key is implicitly specified if the certificate originated from a PFX that contains the corresponding private key, or if on a Windows-based computer where the certificate and corresponding private key are pre-installed. (If a PFX file is used, it is provided via the AddPfxSourceFile or AddPfxSourceData methods.)

Returns 1 for success, 0 for failure.

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SetSigningCert2
function SetSigningCert2(cert: TChilkatCert; privateKey: TPrivateKey): Integer;

Specifies a digital certificate and private key to be used for creating PKCS7 digital signatures.

Returns 1 for success, 0 for failure.

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SetTsaHttpObj
procedure SetTsaHttpObj(http: TChilkatHttp);

Sets the timestamp authority (TSA) options for cases where a CAdES-T signature is to be created. The http is used to send the requests, and it allows for connection related settings and timeouts to be set. For example, if HTTP or SOCKS proxies are required, these features can be specified on the http.

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SetVerifyCert
function SetVerifyCert(cert: TChilkatCert): Integer;

Sets the digital certificate to be used in verifying a signature. In virtually all cases, a PKCS7 (CMS) signature already embeds the signing certificate information, and it is not necessary to explicitly call this method to specify the verification certificate. It is only needed in rare cases.

Returns 1 for success, 0 for failure.

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SignBdENC
function SignBdENC(dataToSign: TChilkatBinData): WideString;
Introduced in version 9.5.0.67

Digitally signs the content in dataToSign and returns a detached signature (PKCS#7 signed-data) as a binary-encoded string. The EncodingMode property determines the binary-encoding. Possible encodings include base64, base64_mime, hex, and hex_lower. The HashAlgorithm property specifies the hash algorithm for creating the data's hash during signing.

Returns a zero-length WideString on failure

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SignBdENCAsync (1)
function SignBdENCAsync(dataToSign: TChilkatBinData): TChilkatTask;
Introduced in version 9.5.0.67

Creates an asynchronous task to call the SignBdENC method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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SignBytes
function SignBytes(data: OleVariant): OleVariant;

Digitally signs binary data and returns the binary detached signature (PKCS#7 signed-data). The HashAlgorithm property specifies the hash algorithm for creating the data's hash during signing.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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SignBytesAsync (1)
function SignBytesAsync(data: OleVariant): TChilkatTask;

Creates an asynchronous task to call the SignBytes method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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SignBytesENC
function SignBytesENC(data: OleVariant): WideString;

Digitally signs binary data and returns a detached signature (PKCS#7 signed-data) as a binary-encoded string. The EncodingMode property determines the binary-encoding. Possible encodings include base64, base64_mime, hex, and hex_lower. The HashAlgorithm property specifies the hash algorithm for creating the data's hash during signing.

Returns a zero-length WideString on failure

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SignBytesENCAsync (1)
function SignBytesENCAsync(data: OleVariant): TChilkatTask;

Creates an asynchronous task to call the SignBytesENC method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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SignHashENC
function SignHashENC(encodedHash: WideString; hashAlg: WideString; hashEncoding: WideString): WideString;
Introduced in version 9.5.0.90

Digitally signs a pre-computed hash and returns a detached signature (PKCS#7 signed-data) as a binary-encoded string. The EncodingMode property determines the binary-encoding. Possible encodings include base64, base64_mime, hex, and hex_lower

encodedHash is a binary-encoded hash to be signed, with its encoding format specified by hashEncoding (e.g., base64, hex). hashAlg specifies the hash algorithm (e.g., sha256, sha1, sha512) used for encodedHash.

Returns a zero-length WideString on failure

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SignHashENCAsync (1)
function SignHashENCAsync(encodedHash: WideString; hashAlg: WideString; hashEncoding: WideString): TChilkatTask;
Introduced in version 9.5.0.90

Creates an asynchronous task to call the SignHashENC method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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SignSbENC
function SignSbENC(sb: TChilkatStringBuilder): WideString;
Introduced in version 9.5.0.67

Digitally signs the text contained in sb and returns a detached signature (PKCS#7 signed-data) as a binary-encoded string. The EncodingMode property determines the binary-encoding. Possible encodings include base64, base64_mime, hex, and hex_lower. The HashAlgorithm property specifies the hash algorithm for creating the data's hash during signing. The Charset property determines the actual bytes that are hashed and signed.

Returns a zero-length WideString on failure

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SignSbENCAsync (1)
function SignSbENCAsync(sb: TChilkatStringBuilder): TChilkatTask;
Introduced in version 9.5.0.67

Creates an asynchronous task to call the SignSbENC method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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SignString
function SignString(str: WideString): OleVariant;

Digitally signs a string and returns a the binary detached signature (PKCS#7 signed-data). The HashAlgorithm property specifies the hash algorithm for creating the data's hash during signing. The Charset property determines the actual bytes that are hashed and signed.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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SignStringAsync (1)
function SignStringAsync(str: WideString): TChilkatTask;

Creates an asynchronous task to call the SignString method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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SignStringENC
function SignStringENC(str: WideString): WideString;

Digitally signs a string and returns a detached signature (PKCS#7 signed-data) as a binary-encoded string. The EncodingMode property determines the binary-encoding. Possible encodings include base64, base64_mime, hex, and hex_lower. The HashAlgorithm property specifies the hash algorithm for creating the data's hash during signing. The Charset property determines the actual bytes that are hashed and signed.

Returns a zero-length WideString on failure

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SignStringENCAsync (1)
function SignStringENCAsync(str: WideString): TChilkatTask;

Creates an asynchronous task to call the SignStringENC method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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Totp
function Totp(secret: WideString; secretEnc: WideString; t0: WideString; tNow: WideString; tStep: Integer; numDigits: Integer; truncOffset: Integer; hashAlg: WideString): WideString;
Introduced in version 9.5.0.77

Implements RFC 6238: TOTP: Time-Based One-Time Password Algorithm. The arguments to this method are:

  • secret: The shared secret in an enocded representation such as base64, hex, ascii, etc.
  • secretEnc: The encoding of the shared secret, such as base64
  • t0: The Unix time to start counting time steps. It is a number in decimal string form. A Unix time is the number of seconds elapsed since midnight UTC of January 1, 1970. 0 is a typical value used for this argument.
  • tNow: The current Unix time in decimal string form. To use the current system date/time, pass an empty string for this argument.
  • tStep: The time step in seconds. A typical value is 30. Note: Both client and server must pre-agree on the secret, the t0, and the tStep.
  • numDigits: The number of decimal digits to return.
  • truncOffset: Normally set this to -1 for dynamic truncation. Otherwise can be set in the range 0..15.
  • hashAlg: Normally set to sha1. Can be set to other hash algorithms such as sha256, sha512, etc.

Returns a zero-length WideString on failure

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UseCertVault
function UseCertVault(vault: TChilkatXmlCertVault): Integer;
Introduced in version 9.5.0.40

Adds an XML certificate vault to the object's internal list of sources to be searched for certificates and private keys when encrypting/decrypting or signing/verifying. Unlike the AddPfxSourceData and AddPfxSourceFile methods, only a single XML certificate vault can be used. If UseCertVault is called multiple times, only the last certificate vault will be used, as each call to UseCertVault will replace the certificate vault provided in previous calls.

Returns 1 for success, 0 for failure.

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VerifyBdENC
function VerifyBdENC(data: TChilkatBinData; encodedSig: WideString): Integer;
Introduced in version 9.5.0.67

Verifies a detached digital signature against the original data contained in data. Returns 1 if the signature is verified. The encodedSig holds a binary-encoded PKCS#7 signed-data detached signature. The type of binary encoding, such as base64, hex, or base64_mime, is determined by the EncodingMode property.

Afterwards, you can retrieve signer certificates by using the NumSignerCerts property and the GetSignerCert method.

Returns 1 for success, 0 for failure.

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VerifyBytes
function VerifyBytes(data: OleVariant; sig: OleVariant): Integer;

Verifies a detached digital signature against the original binary data. Returns 1 if the signature is verified.

Afterwards, you can retrieve signer certificates by using the NumSignerCerts property and the GetSignerCert method.

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VerifyBytesENC
function VerifyBytesENC(data: OleVariant; encodedSig: WideString): Integer;

Verifies a detached digital signature against the original binary data. Returns 1 if the signature is verified. The encodedSig holds a binary-encoded PKCS#7 signed-data detached signature. The type of binary encoding, such as base64, hex, or base64_mime, is determined by the EncodingMode property.

Afterwards, you can retrieve signer certificates by using the NumSignerCerts property and the GetSignerCert method.

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VerifyP7M
function VerifyP7M(p7mPath: WideString; destPath: WideString): Integer;

Verifies an opaque digital signature contained in a .p7m file and extracts the original data to destPath. Returns 1 if the .p7m is validated and the original data was extracted. Otherwise returns 0.

Afterwards, you can retrieve signer certificates by using the NumSignerCerts property and the GetSignerCert method.

Returns 1 for success, 0 for failure.

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VerifyP7S
function VerifyP7S(originalDataPath: WideString; p7sPath: WideString): Integer;

Verifies a detached digital signature contained in a .p7s file against the original data contained in originalDataPath. Returns 1 if the signature is verified.

Afterwards, you can retrieve signer certificates by using the NumSignerCerts property and the GetSignerCert method.

Returns 1 for success, 0 for failure.

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VerifySbENC
function VerifySbENC(sb: TChilkatStringBuilder; encodedSig: WideString): Integer;
Introduced in version 9.5.0.67

Verifies a detached digital signature against the original text contained in sb. Returns 1 if the signature is verified. The encodedSig holds a binary-encoded PKCS#7 signed-data detached signature. The type of binary encoding, such as base64, hex, or base64_mime, is determined by the EncodingMode property. The Charset property determines how the text in sb is converted to bytes for signature validation.

Afterwards, you can retrieve signer certificates by using the NumSignerCerts property and the GetSignerCert method.

Returns 1 for success, 0 for failure.

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VerifyString
function VerifyString(str: WideString; sig: OleVariant): Integer;

Verifies a detached digital signature against the original text in str. Returns 1 if the signature is verified. The sig holds a binary PKCS#7 signed-data detached signature. The Charset property determines how the text in str is converted to bytes for signature validation.

Afterwards, you can retrieve signer certificates by using the NumSignerCerts property and the GetSignerCert method.

Returns 1 for success, 0 for failure.

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VerifyStringENC
function VerifyStringENC(str: WideString; encodedSig: WideString): Integer;

Verifies a detached digital signature against the original text in str. Returns 1 if the signature is verified. The encodedSig holds a binary-encoded PKCS#7 signed-data detached signature. The type of binary encoding, such as base64, hex, or base64_mime, is determined by the EncodingMode property. The Charset property determines how the text in str is converted to bytes for signature validation.

Afterwards, you can retrieve signer certificates by using the NumSignerCerts property and the GetSignerCert method.

Returns 1 for success, 0 for failure.

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XtsSetDataUnitNumber
procedure XtsSetDataUnitNumber(loUint32: Integer; hiUint32: Integer);
Introduced in version 9.5.0.91

Sets the XTS-AES mode data unit number. The data unit number is a 64-bit unsigned integer. It is passed in as two 32-bit unsigned integers representing the high and low 32-bits.

Setting the data unit number is one way of setting the tweak value. The tweak value is 16 bytes in length and can alternatively be set by calling XtsSetEncodedTweakValue.

This method sets the tweak value such that the first 8 bytes are composed of the little-endian 64-bit data unit number, followed by 8 zero bytes.

(Unfortunately, Chilkat cannot use 64-bit integers in method arguments because many older programming environments, such as ActiveX, do not support it. Chilkat must present an identical and uniform API across all programming languages.)

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XtsSetEncodedTweakKey
procedure XtsSetEncodedTweakKey(key: WideString; encoding: WideString);
Introduced in version 9.5.0.91

Sets the XTS-AES mode tweak key from an encoded string. The encoding argument can be set to any of the following strings: base64, hex, quoted-printable, ascii, or url. The tweak key should be equal in size to the encryption key. For example, to do 256-bit AES-XTS, the encryption key is 256-bits, and the tweak key is also 256-bits.

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XtsSetEncodedTweakValue
procedure XtsSetEncodedTweakValue(tweak: WideString; encoding: WideString);
Introduced in version 9.5.0.91

Sets the XTS-AES mode tweak value from an encoded string. The encoding argument can be set to any of the following strings: base64, hex, quoted-printable, ascii, or url.

The tweak value must be 16 bytes in length. An application can set the initial tweak value by calling this method, or by calling XtsSetDataUnitNumber (but not both).

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Events

AbortCheck
procedure AbortCheck(ASender: TObject; out abort: Integer);

Provides the opportunity for a method call to be aborted. The AbortCheck event is fired periodically based on the value of the HeartbeatMs property. If HeartbeatMs is 0, then no AbortCheck events will fire. As an example, to fire 5 AbortCheck events per second, set the HeartbeatMs property equal to 200.

Delphi ActiveX Event callback implementation:

procedure TForm1.cryptAbortCheck(ASender: TObject;  out abort: Integer);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  crypt: TChilkatCrypt2;

begin
  crypt := TChilkatCrypt2.Create(Self);
  crypt.OnAbortCheck := cryptAbortCheck;
  // ...
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PercentDone
procedure PercentDone(ASender: TObject; pctDone: Integer; out abort: Integer);

Provides the percentage completed for any method that involves network communications or time-consuming processing (assuming it is a method where a percentage completion can be measured). This event is only fired when it is possible to know a percentage completion, and when it makes sense to express the operation as a percentage completed. The pctDone argument will have a value from 1 to 100. For operations (Chilkat method calls) that complete very quickly, the number of PercentDone callbacks will vary, but the final callback should have a value of 100. For long running operations, no more than one callback per percentage point will occur (for example: 1, 2, 3, ... 98, 99, 100).

The PercentDone callback counts as an AbortCheck event. For method calls that complete quickly such that PercentDone events fire, it may be that AbortCheck events don't fire because the opportunity to abort is already provided in the PercentDone callback. For time consuming operations, where the amount of time between PercentDone callbacks are long, AbortCheck callbacks may be used to allow for the operation to be aborted in a more responsive manner.

The abort output argument provides a means for aborting the operation. Setting it to 1 will cause the method to abort and return a failed status (or whatever return value indicates failure).

Delphi ActiveX Event callback implementation:

procedure TForm1.cryptPercentDone(ASender: TObject;  pctDone: Integer; out abort: Integer);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  crypt: TChilkatCrypt2;

begin
  crypt := TChilkatCrypt2.Create(Self);
  crypt.OnPercentDone := cryptPercentDone;
  // ...
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ProgressInfo
procedure ProgressInfo(ASender: TObject; const name: WideString; const value: WideString);

A general name/value event that provides information about what is happening during a method call. To find out what information is available, write code to handle this event and log the name/value pairs. Most are self-explanatory.

Delphi ActiveX Event callback implementation:

procedure TForm1.cryptProgressInfo(ASender: TObject;  const name: WideString; const value: WideString);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  crypt: TChilkatCrypt2;

begin
  crypt := TChilkatCrypt2.Create(Self);
  crypt.OnProgressInfo := cryptProgressInfo;
  // ...
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TaskCompleted
procedure TaskCompleted(ASender: TObject; const task: IChilkatTask);

Called in the background thread when an asynchronous task completes.

More Information and Examples

Delphi ActiveX Event callback implementation:

procedure TForm1.cryptTaskCompleted(ASender: TObject;  const task: IChilkatTask);
begin
    // Application code goes here...
end;


procedure TForm1.Button1Click(Sender: TObject);
var
  crypt: TChilkatCrypt2;

begin
  crypt := TChilkatCrypt2.Create(Self);
  crypt.OnTaskCompleted := cryptTaskCompleted;
  // ...
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Deprecated

Decode
function Decode(str: WideString; encoding: WideString): OleVariant;
This method is deprecated.

Applications should instead call BinData.AppendEncoded to append binary encoded data (such as base64) to a BinData object. The decoded binary bytes can then be obtained from the BinData object.

Decode binary data from an encoded string. The encoding can be set to any of the following strings: base64, hex, quoted-printable, url, base32, Q, B, url_rc1738, url_rfc2396, url_rfc3986, url_oauth, uu, modBase64, or html (for HTML entity encoding).

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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DecryptStream
function DecryptStream(strm: TChilkatStream): Integer;
Introduced in version 9.5.0.56
This method is deprecated.

This method is deprecated. Applications should implement streaming decryption by using the FirstChunk and LastChunk properties.

Returns 1 for success, 0 for failure.

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DecryptStreamAsync (1)
function DecryptStreamAsync(strm: TChilkatStream): TChilkatTask;
Introduced in version 9.5.0.56
This method is deprecated.

Creates an asynchronous task to call the DecryptStream method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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EncryptStream
function EncryptStream(strm: TChilkatStream): Integer;
Introduced in version 9.5.0.56
This method is deprecated.

This method is deprecated. Applications should implement streaming encryption or decryption by using the FirstChunk and LastChunk properties.

Returns 1 for success, 0 for failure.

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EncryptStreamAsync (1)
function EncryptStreamAsync(strm: TChilkatStream): TChilkatTask;
Introduced in version 9.5.0.56
This method is deprecated.

Creates an asynchronous task to call the EncryptStream method with the arguments provided.

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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GenerateSecretKey
function GenerateSecretKey(password: WideString): OleVariant;
This method is deprecated and replaced by Pbkdf2

This method is deprecated and should be avoided because it transforms the password into a binary secret key using a transformation that is undocumented and specific to this Chilkat method. PBKDF2 is a standard and more secure method of generating a binary secret key from a password. An example using PBKDF2 is shown below.

This method converts a string into a byte array matching the bit length of the KeyLength property. For instance, if KeyLength is 128 bits, the resulting array will be 16 bytes. This byte array can be assigned to the SecretKey property. For decryption to work, the SecretKey must match exactly. To use password-based encryption, pass the password to this method to generate an appropriate binary secret key for the SecretKey property.

IMPORTANT: Do not use this method to decrypt data if another party has provided you with the secret key. It is intended to transform a password of any length into a correctly sized binary secret key.

Returns a zero-length byte array (as an OleVariant) on failure.
An empty array will have a VarArrayHighBound of -1 meaning 0 elements.

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GetDecryptCert
function GetDecryptCert(): TChilkatCert;
Introduced in version 9.5.0.46
This method is deprecated.

This method is deprecated. Application should instead call LastDecryptCert

Returns the last certificate used for public-key decryption.

Returns nil on failure

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GetSignerCert
function GetSignerCert(index: Integer): TChilkatCert;
This method is deprecated.

This method is deprecated. Application should instead call LastSignerCert

Gets the Nth certificate used for signing. This method can be called after verifying a digital signature to get the signer certs. The 1st certificate is at index 0. The NumSignerCerts property contains the total number of signing certificates. (Typically, a single certificate is used in creating a digital signature.)

Returns nil on failure

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GetSignerCertChain
function GetSignerCertChain(index: Integer): TChilkatCertChain;
Introduced in version 9.5.0.40
This method is deprecated.

This method is deprecated. Applications can get the cert chain by calling LastSignerCert to get the certificate object, and then get the certificate chain from the certificate object.

Returns the full certificate chain for the Nth certificate used to for signing. Indexing begins at 0.

Returns nil on failure

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LastJsonData
function LastJsonData(): TChilkatJsonObject;
Introduced in version 9.5.0.70
This method is deprecated and replaced by GetLastJsonData

This method is deprecated. Please use GetLastJsonData instead. GetLastJsonData provides details about the most recently executed method. While many methods don't provide additional information, some do, such as after verifying a signature. In such cases, LastJsonData will return JSON with details like the algorithms used in the verification process.

Returns nil on failure

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VerifyDetachedSignature
function VerifyDetachedSignature(inFilename: WideString; p7sFilename: WideString): Integer;
This method is deprecated and replaced by VerifyP7S

This method is the same as VerifyP7S. Applications should instead call VerifyP7S.

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