QuickHash Library Type Library

MD4_Final

void MD4_Final( [in, out]MD4_Context* pContext, [out]MD4_Digest* pDigest );
 

Parameters

pContext

    [in/out] A memory buffer that is used as the context.

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

 pDigest

    [out] A memory buffer that will receive the message digest.

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

Remarks

Call this function to retrieve the MD4 message digest from the pContext context. The digest is retrieved in the pDigest memory buffer.

After the MD4_Final function is performed, the context is initialized for new calculations, as it would be called MD4_Init again.

Note. Before the first call to MD4_Update, MD4_UpdateStr, MD4_Final or MD4_FinalHex functions, the context must be initialized with MD4_Init.

VB Example

Private Sub MyButton_Click()   
    Dim Context As MD4_Context
    Dim Digest As MD4_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    
    'Initialize the context
    MD4_Init Context
    'Update the context with first part
    Dim nFirstLen As Long
    nFirstLen = nLen / 3
    MD4_Update Context, MyBinData(1), nFirstLen
    'Update the context with second part
    MD4_Update Context, MyBinData(nFirstLen + 1), nLen - nFirstLen
    'Get the digest
    MD4_Final Context, Digest
    'Show the hexadecimal representation of the digest
    MsgBox QHASH_ConvertToHex(Digest.Value(0), MD4_DIGESTSIZE, True)
End Sub

 

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See Also    MD4_FinalHex, MD4_Update, MD4_UpdateStr, MD4_Init, QHASH_ConvertToHex


 

 

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