QuickHash Library

Type Library

ADLER32_FinalHex

void ADLER32_FinalHex( [in,out]ADLER32_Context* pContext,[out]ADLER32_HexDigest* pDigest, [ in ]boolean bUpper );
 

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 checksum as an ASCII null-terminated string.

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

 bUpper

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

Remarks

Call this function to retrieve the ADLER32 checksum from the pContext context. The checksum is retrieved as an ASCII null-terminated hexadecimal string in the pDigest memory buffer.

After the ADLER32_FinalHex function  is performed, the context is initialized for new calculations, as it would be called ADLER32_Init again.

Note. Before the first call to ADLER32_Update, ADLER32_UpdateStr, ADLER32_Final or ADLER32_FinalHex functions, the context must be initialized with ADLER32_Init.

VB Example

Private Sub MyButton_Click()   

    Dim Context As ADLER32_Context

    Dim Checksum As ADLER32_HexDigest

    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

    ADLER32_Init Context

    'Update the context with first part

    Dim nFirstLen As Long

    nFirstLen = nLen / 3

    ADLER32_Update Context, MyBinData(1), nFirstLen

    'Update the context with second part

    ADLER32_Update Context, MyBinData(nFirstLen + 1), nLen - nFirstLen

    'Get the checksum

    ADLER32_FinalHex Context, Checksum, True

    'Show the hexadecimal representation of the checksum

    MsgBox QHASH_ASCIItoBSTR(Checksum.Value(0))

End Sub

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See Also    ADLER32_Final, ADLER32_Update, ADLER32_UpdateStr, ADLER32_Init, QHASH_ASCIItoBSTR