QuickHash Library Type Library

QHASH_FileHexHMAC

BSTR QHASH_FileHexHMAC( [ in ] int nAlgID, [ in , string ] unsigned char* pszFileName,[ in , string ] unsigned char* pKey, [ in ] boolean bUpper );

Return value

The hexadecimal representation of the HMAC.

Parameters

nAlgID

    [in] The ID of the hash algorithm selected for calculations. For example, nAlgID has to be set to SHA1_ALGID when you need to calculate the HMAC using SHA-1 hash algorithm.

    Note. All supported hash algorithms with their corresponding IDs are specified in the Predefined Constants List.

pszFileName

    [in] A null-terminated string specifying the name of the file for which to calculate the HMAC.

pKey

    [in] The key which represents a null-terminated string.

bUpper

    [in] Uppercase flag. If bUpper is False, the received HMAC represents a lowercase string, otherwise it represents an uppercase string.

Remarks

Calculates and returns the HMAC for the file specified by pszFileName using the key specified by pKey. The HMAC is returned as a hexadecimal string.

Note. If the result is an empty string call QHASH_GetLastError function for the error code.

VB Example

Private Sub MyButton_Click()
    'Calculate and Show the MD5-HMAC in hexadecimal representation
    MsgBox QHASH_FileHexHMAC(MD5_ALGID, "C:\Test\Test.txt", "password", True)
End Sub

 

 

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See Also    QHASH_FileHMAC, QHASH_BlockHexHMAC, QHASH_StringHexHMAC, QHASH_GetLastError

 

 

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