TransformBlock

Continues to compute the hash value for blocks of data.

 Public Function TransformBlock(
	  ByRef InputBuffer ( ) As Byte,
	  ByVal InputOffset As Long,
	  ByVal InputCount As Long,
	  ByRef OutputBuffer ( ) As Byte,
	  ByVal OutputOffset As Long ) As Long

Parameters

InputBuffer

[ByRef] Byte. The bytes to continue computing the hash from.

InputOffset

[ByVal] Long. The index into the byte array to begin computing from.

InputCount

[ByVal] Long. The number of bytes to be included in the hash computation.

OutputBuffer

[ByRef] Byte. The data after it has been processed. This will be the same as the input data, no changes are made.

OutputOffset

[ByVal] Long. The starting index in the output buffer to place the processed data.

Return Values

Remarks

The OutputBuffer will contain the same plain text data as the input buffer. No transformation of the data is applied. The OutputBuffer array can be an uninitialized array or the same array as the InputBuffer. If InputBuffer and OutputBuffer are the same array and InputOffset equals OutputOffset, no data is copied.

Once this method is called, Hash cannot be called until the TransformFinalBlock is called, finishing the hash computation.

See Also

Project CorLib Overview

Class HMAC Overview

Hash