SHA512Update

Digests the current input message stream of the specified length.

Syntax

IppStatus ippsSHA512Update(const Ipp8u *pSrcMesg, int mesglen, IppsSHA512State *pCtx);

Parameters

pSrcMesg	Pointer to the buffer containing a part of or the whole message.
mesglen	Length of the actual part of the message in bytes.
pCtx	Pointer to the IppsSHA512State context.

Description

This function is declared in the ippcp.h file. The function digests the current input message stream of the specified length.

The function first integrates the previous partial block with the input message stream and then partitions them into multiple message blocks (as specified by the applied hash algorithm) with a possible additional partial block. For each message block, the function uses the selected hash algorithm to transform the block into a new chaining digest 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.
ippStsContextMatchErr	Indicates an error condition if the context parameter does not match the operation.
ippStsLengthErr	Indicates an error condition if the input data stream length is less than zero.