QuickHash Library

Type Library

QHASH_BlockDigest

Return value

Parameters

nAlgID

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

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

 pDigest

    [out] The memory buffer that will receive the message digest/checksum.

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

 pSrc

    [in] A continuous memory block for which to calculate the message digest/checksum.

nSrcLength

    [in] Length in bytes of the memory block.

Remarks

Calculates the message digest/checksum for a continuous memory block. The digest/checksum is retrieved in the pDigest memory buffer.

VB Example

Private Sub MyButton_Click()

    Dim Digest As QHASH_Digest

    Dim MyStrData As String

    MyStrData = "Hello World!"

    Dim nLen As Long

    nLen = Len(MyStrData)

    'Convert the string to byte array

    Dim MyBinData() As Byte

    ReDim MyBinData(1 To nLen)

    For i = 1 To nLen

        MyBinData(i) = Asc(Mid(MyStrData, i, 1))

    Next i

    'Calculate the digest 

    QHASH_BlockDigest MD5_ALGID, Digest, MyBinData(1), nLen

    'Show the digest in hexadecimal representation

    MsgBox QHASH_ConvertToHex(Digest.Value(0), MD5_DIGESTSIZE, True) 

End Sub

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See Also    QHASH_BlockHexDigest, QHASH_StringDigest, QHASH_FileDigest, QHASH_ConvertToHex