Csp Unicode C Reference Documentation

Csp

Current Version: 10.0.0

Note: This class is deprecated and should no longer be used.

Represents a cryptographic service provider for selecting encryption, hashing, and digital signing algorithms.

This class is specific to the Windows operating system, and therefore is only available on Windows systems.

Create/Dispose

HCkCspW instance = CkCspW_Create();
// ...
CkCspW_Dispose(instance);

HCkCspW CkCspW_Create(void);

Creates an instance of the HCkCspW object and returns a handle ("void *" pointer). The handle is passed in the 1st argument for the functions listed on this page.

void CkCspW_Dispose(HCkCspW handle);

Objects created by calling CkCspW_Create must be freed by calling this method. A memory leak occurs if a handle is not disposed by calling this function. Also, any handle returned by a Chilkat "C" function must also be freed by the application by calling the appropriate Dispose method, such as CkCspW_Dispose.

Properties

DebugLogFilePath

void CkCspW_getDebugLogFilePath(HCkCspW cHandle, HCkString retval);
void CkCspW_putDebugLogFilePath(HCkCspW cHandle, const wchar_t *newVal);
const wchar_t *CkCspW_debugLogFilePath(HCkCspW cHandle);

If set to a file path, causes each Chilkat method or property call to automatically append it's LastErrorText to the specified log file. The information is appended such that if a hang or crash occurs, it is possible to see the context in which the problem occurred, as well as a history of all Chilkat calls up to the point of the problem. The VerboseLogging property can be set to provide more detailed information.

This property is typically used for debugging the rare cases where a Chilkat method call hangs or generates an exception that halts program execution (i.e. crashes). A hang or crash should generally never happen. The typical causes of a hang are:

a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
there is an internal problem (bug) in the Chilkat code that causes the hang.

More Information and Examples

Example showing how to use DebugLogFilePath.

EncryptAlgorithm

void CkCspW_getEncryptAlgorithm(HCkCspW cHandle, HCkString retval);
const wchar_t *CkCspW_encryptAlgorithm(HCkCspW cHandle);

Returns the name of the currently selected encryption algorithm in the currently selected CSP.

EncryptAlgorithmID

int CkCspW_getEncryptAlgorithmID(HCkCspW cHandle);

Returns the ID of the currently selected encryption algorithm in the currently selected CSP.

EncryptNumBits

int CkCspW_getEncryptNumBits(HCkCspW cHandle);

Returns the key-length of the currently selected encryption algorithm in the currently selected CSP.

HashAlgorithm

void CkCspW_getHashAlgorithm(HCkCspW cHandle, HCkString retval);
const wchar_t *CkCspW_hashAlgorithm(HCkCspW cHandle);

Returns the name of the currently selected hash algorithm in the currently selected CSP.

HashAlgorithmID

int CkCspW_getHashAlgorithmID(HCkCspW cHandle);

Returns the ID of the currently selected hash algorithm in the currently selected CSP.

HashNumBits

int CkCspW_getHashNumBits(HCkCspW cHandle);

Returns the bit length of the currently selected hash algorithm in the currently selected CSP.

LastErrorHtml

void CkCspW_getLastErrorHtml(HCkCspW cHandle, HCkString retval);
const wchar_t *CkCspW_lastErrorHtml(HCkCspW cHandle);

Provides information in HTML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

LastErrorText

void CkCspW_getLastErrorText(HCkCspW cHandle, HCkString retval);
const wchar_t *CkCspW_lastErrorText(HCkCspW cHandle);

Provides information in plain-text format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

More Information and Examples

Concept of LastErrorText LastErrorText Standard Information

LastErrorXml

void CkCspW_getLastErrorXml(HCkCspW cHandle, HCkString retval);
const wchar_t *CkCspW_lastErrorXml(HCkCspW cHandle);

Provides information in XML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

LastMethodSuccess

BOOL CkCspW_getLastMethodSuccess(HCkCspW cHandle);
void CkCspW_putLastMethodSuccess(HCkCspW cHandle, BOOL newVal);

Indicate whether the last method call succeeded or failed. A value of TRUE indicates success, a value of FALSE indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

Any method that returns a string.
Any method returning a Chilkat object, binary bytes, or a date/time.
Any method returning a standard boolean status value where success = TRUE and failure = FALSE.
Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to TRUE. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

NumEncryptAlgorithms

int CkCspW_getNumEncryptAlgorithms(HCkCspW cHandle);

The number of encryption algorithms provided by the currently selected CSP.

NumHashAlgorithms

int CkCspW_getNumHashAlgorithms(HCkCspW cHandle);

The number of hash algorithms provided by the currently selected CSP.

NumKeyContainers

int CkCspW_getNumKeyContainers(HCkCspW cHandle);

The number of key containers provided by the currently selected CSP.

NumKeyExchangeAlgorithms

int CkCspW_getNumKeyExchangeAlgorithms(HCkCspW cHandle);

The number of key exchange algorithms provided by the currently selected CSP.

NumSignatureAlgorithms

int CkCspW_getNumSignatureAlgorithms(HCkCspW cHandle);

The number of signature algorithms provided by the currently selected CSP.

ProviderName

void CkCspW_getProviderName(HCkCspW cHandle, HCkString retval);
void CkCspW_putProviderName(HCkCspW cHandle, const wchar_t *newVal);
const wchar_t *CkCspW_providerName(HCkCspW cHandle);

The currently selected CSP. To select another CSP, simply set this property to the name of the CSP, such as "Microsoft Enhanced Cryptographic Provider v1.0". If the CSP is not available on your machine, the property value will not change. The initial and default value for this property is "Microsoft Base Cryptographic Provider v1.0".

ProviderType

int CkCspW_getProviderType(HCkCspW cHandle);

This is an integer representing the type of CSP. (Chilkat uses it for internal use.)

UncommonOptions

void CkCspW_getUncommonOptions(HCkCspW cHandle, HCkString retval);
void CkCspW_putUncommonOptions(HCkCspW cHandle, const wchar_t *newVal);
const wchar_t *CkCspW_uncommonOptions(HCkCspW cHandle);

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.

VerboseLogging

BOOL CkCspW_getVerboseLogging(HCkCspW cHandle);
void CkCspW_putVerboseLogging(HCkCspW cHandle, BOOL newVal);

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

Version

void CkCspW_getVersion(HCkCspW cHandle, HCkString retval);
const wchar_t *CkCspW_version(HCkCspW cHandle);

Version of the component/library, such as "9.5.0.94"

More Information and Examples

How to get the Chilkat version at runtime.

Methods

HasEncryptAlgorithm

BOOL CkCspW_HasEncryptAlgorithm(HCkCspW cHandle, const wchar_t *name, int numBits);

Returns true if the currently selected CSP contains an encryption algorithm matching the name and key length. Otherwise returns false.

HasHashAlgorithm

BOOL CkCspW_HasHashAlgorithm(HCkCspW cHandle, const wchar_t *name, int numBits);

Returns TRUE if the currently selected CSP contains a hash algorithm matching the name and bit length. Otherwise returns FALSE

Initialize

BOOL CkCspW_Initialize(HCkCspW cHandle);

Intializes the Csp with the selected ProviderName.

NthEncryptionAlgorithm

BOOL CkCspW_NthEncryptionAlgorithm(HCkCspW cHandle, int index, const wchar_t *outName);
const wchar_t *CkCspW_nthEncryptionAlgorithm(HCkCspW cHandle, int index);

Returns the name of the Nth encryption algorithm provided by the currently selected CSP. Indexing begins at 0.

Returns TRUE for success, FALSE for failure.

NthEncryptionNumBits

int CkCspW_NthEncryptionNumBits(HCkCspW cHandle, int index);

Returns the key-length of the currently selected encryption algorithm in the currently selected CSP.

NthHashAlgorithmName

BOOL CkCspW_NthHashAlgorithmName(HCkCspW cHandle, int index, const wchar_t *outName);
const wchar_t *CkCspW_nthHashAlgorithmName(HCkCspW cHandle, int index);

To be documented soon...

Returns TRUE for success, FALSE for failure.

NthHashNumBits

int CkCspW_NthHashNumBits(HCkCspW cHandle, int index);

Returns the bit length of the Nth hash algorithm provided by the currently selected CSP. Indexing begins at 0.

NthKeyContainerName

BOOL CkCspW_NthKeyContainerName(HCkCspW cHandle, int index, const wchar_t *outName);
const wchar_t *CkCspW_nthKeyContainerName(HCkCspW cHandle, int index);

Returns the Nth key container name in the currently selected CSP. Indexing begins at 0.

Returns TRUE for success, FALSE for failure.

More Information and Examples

Find Certificate on Smartcard Currenty in Reader

NthKeyExchangeAlgorithm

BOOL CkCspW_NthKeyExchangeAlgorithm(HCkCspW cHandle, int index, const wchar_t *outName);
const wchar_t *CkCspW_nthKeyExchangeAlgorithm(HCkCspW cHandle, int index);

Returns the Nth key exchange algorithm provided by the currently selected CSP. Indexing begins at 0.

Returns TRUE for success, FALSE for failure.

NthKeyExchangeNumBits

int CkCspW_NthKeyExchangeNumBits(HCkCspW cHandle, int index);

Returns the bit length of the Nth key exchange algorithm provided by the currently selected CSP. Indexing begins at 0.

NthSignatureAlgorithm

BOOL CkCspW_NthSignatureAlgorithm(HCkCspW cHandle, int index, const wchar_t *outName);
const wchar_t *CkCspW_nthSignatureAlgorithm(HCkCspW cHandle, int index);

Returns the name of the Nth signature algorithm provided by the currently selected CSP. Indexing begins at 0.

Returns TRUE for success, FALSE for failure.

NthSignatureNumBits

int CkCspW_NthSignatureNumBits(HCkCspW cHandle, int index);

Returns the bit length of the Nth signature algorithm provided by the currently selected CSP. Indexing begins at 0.

SetEncryptAlgorithm

int CkCspW_SetEncryptAlgorithm(HCkCspW cHandle, const wchar_t *name);

Selects an encryption algorithm. The return value is the key-length of the algorithm. If the algorithm is not available, the return value is 0. (There usually is not a need to explicitly select the key length, because the key length can be part of the name, such as "AES 128", or it is determined by the CSP. For example, the Microsoft Enhanced CSP will return a 128-bit key length for RC2, whereas the Base CSP will return a 40-bit key length.)

SetHashAlgorithm

int CkCspW_SetHashAlgorithm(HCkCspW cHandle, const wchar_t *name);

Selects a hash algorithm. The return value is the bit-length of the algorithm. If the algorithm is not available, the return value is 0.