QuickHash Library Type Library

QHASH_StringHMAC

int QHASH_StringHMAC( [ in ]int nAlgID, [ out ]QHASH_Digest *pDigest, [ in , string ] unsigned char* pSrc,[ in , string ] unsigned char* pKey );

Return value

Zero if calculation is successful, otherwise nonzero.

Note. All possible return values are specified in the Error Codes List.

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.

 pDigest

    [out] The memory buffer that will receive the HMAC.

    Note. All predefined types are specified in the Predefined Types List.

 pSrc

    [in] A null-terminated string for which to calculate the HMAC.

pKey

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

Remarks

Calculates the HMAC for the null-terminated string specified by pSrc using the key specified by pKey. The HMAC is retrieved in the pDigest memory buffer.

VB Example

Private Sub MyButton_Click()
    Dim hmac As QHASH_Digest
    'Calculate the MD5-HMAC
    QHASH_StringHMAC MD5_ALGID, hmac, "Hello World!", "password"
    'Show the hexadecimal representation of the MD5-HMAC
    MsgBox QHASH_ConvertToHex(hmac.Value(0), MD5_DIGESTSIZE, True)
End Sub

 

 

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See Also    QHASH_StringHexHMAC, QHASH_BlockHMAC, QHASH_FileHMAC, QHASH_ConvertToHex


 

 

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