QuickHash Library Type Library


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.



    [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.


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


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


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


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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