SecureString PHP ActiveX Reference Documentation

SecureString

Current Version: 10.0.0

A string class that stores the characters in memory in 256-bit AES CBC encrypted form. The encryption key will be a randomly-generated key.

Object Creation

Chilkat v10.0.0 or greater:
$obj = new COM("Chilkat.SecureString");
Chilkat v9.5.0.*:
$obj = new COM("Chilkat_9_5_0.SecureString");

Properties

LastBinaryResult

VARIANT LastBinaryResult (read-only)

The binary data returned by the last (binary data returning) method called. Only available if Chilkat.Global.KeepBinaryResult is set to true. This provides a means for obtaining large varbinary results in the SQL Server environment (where limitations exist in getting large amounts of data returned by method calls, but where temp tables can be used for binary properties).

LastMethodSuccess

bool LastMethodSuccess

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.

LastStringResult

string LastStringResult (read-only)

The string return value of the last (string returning) method called. Only available if Chilkat.Global.KeepStringResult is set to true. This provides a means for obtaining large string results in the SQL Server environment (where limitations exist in getting long strings returned by method calls, but where temp tables can be used for string properties).

More Information and Examples

Long Strings Returned by ActiveX Methods in SQL Server

LastStringResultLen

int LastStringResultLen (read-only)

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

MaintainHash

string MaintainHash

Introduced in version 9.5.0.71

If set to the name of a hash algorithm, then a hash of the current string value is maintained. This allows for the hash to be verified via the VerifyHash method. Possible hash algorithm names are "sha1", "sha256", "sha384", "sha512", "md5", "md2", "ripemd160", "ripemd128","ripemd256", and "ripemd320".

ReadOnly

bool ReadOnly

Introduced in version 9.5.0.71

Can be set to true to make this secure string read-only (cannot be modified).

Methods

Access

string Access()

Introduced in version 9.5.0.71

Returns the clear-text string value.

Returns null on failure

Append

bool Append(string str)

Introduced in version 9.5.0.71

Appends a clear-text string to this secure string. The in-memory data will be decrypted, the string will be appended, and then it will be re-encrypted. Can return false if the string has been marked as read-only via the ReadOnly property.

Returns true for success, false for failure.

AppendSb

bool AppendSb(Chilkat.StringBuilder sb)

Introduced in version 9.5.0.71

Appends a clear-text string contained in a StringBuilder to this secure string. The in-memory data will be decrypted, the string will be appended, and then it will be re-encrypted. Can return false if the string has been marked as read-only via the ReadOnly property.

Returns true for success, false for failure.

AppendSecure

bool AppendSecure(Chilkat.SecureString secStr)

Introduced in version 9.5.0.71

Appends the contents of a secure string to this secure string. The in-memory data will be decrypted, the secure string will be appended, and then it will be re-encrypted. Can return false if this string has been marked as read-only via the ReadOnly property.

HashVal

string HashVal(string encoding)

Introduced in version 9.5.0.71

Returns the hash value for the current value of this secure string. The encoding specifies the encoding to be used. It can be any of the binary encoding algorithms, such as "base64", "hex", and many more listed at Chilkat Binary Encodings

Returns null on failure

LoadFile

bool LoadFile(string path, string charset)

Introduced in version 9.5.0.71

Loads the contents of a file into this secure string. The current contents of this object are replaced with the new text from the file.

Returns true for success, false for failure.

SecStrEquals

bool SecStrEquals(Chilkat.SecureString secStr)

Introduced in version 9.5.0.71

Returns true if the secStr equals the contents of this secure string.

Returns true for success, false for failure.

VerifyHash

bool VerifyHash(string hashVal, string encoding)

Introduced in version 9.5.0.71

Verifies the hashVal against the hash value stored for the current value of this secure string. The MaintainHash property must've previously been set for this secure string to maintain an internal hash. The encoding specifies the encoding of the hashVal. It can be any of the binary encoding algorithms, such as "base64", "hex", and many more listed at Chilkat Binary Encodings

Returns true for success, false for failure.