CMACRijndael128Update

Updates the MAC value depending on the current input message stream of the specified length.

Syntax

IppStatus ippsCMACRijndael128Update(const Ipp8u *pSrc, int len, IppsCMACRijndael128State* pState);

Parameters

pSrc

Pointer to the buffer containing a part or the entire message.

len

Length of the actual part of the message in bytes.

pState

Pointer to the IppsCMACRijndael128State context.

Description

This function is declared in the ippcp.h file. The function updates the MAC value depending on the current input message stream of the specified length. The function first integrates the previous partial message block with the input message stream and then partitions the obtained message into multiple message blocks with a possible additional partial block. For each message block, the function uses the Rijndael128 cipher to transform the input block into a new chaining MAC value.

Return Values

ippStsNoErr

Indicates no error. Any other value indicates an error or warning.

ippStsNullPtrErr

Indicates an error condition if any of the specified pointers is NULL.

ippStsLengthErr

Indicates an error condition if the input data stream length is less than zero.

ippStsContextMatchErr

Indicates an error condition if the context parameter does not match the operation.

See Also

Submit feedback on this help topic

Copyright © 2000 - 2010, Intel Corporation. All rights reserved.