HashGetTag

Computes the current digest value of the processed part of the message.

Syntax

IppStatus ippsHashGetTag(Ipp8u* pTag, int tagLen, const IppsHashState* pCtx);

IppStatus ippsHashGetTag_rmf(Ipp8u* pTag, int tagLen, ippsHashState_rmf* pCtx);

Include Files

ippcp.h

Parameters

pTag	Pointer to the authentication tag.
tagLen	The length of the tag (in bytes).
pCtx	Pointer to the IppsHashState or IppsHashState_rmf context.

Description

Note

ippsHashGetTag function is deprecated. Please refer to Deprecated Functions section for the recommendations for transition.

The function computes the message digest based on the current context as specified in FIPS PUB 180-2, FIPS PUB 180-4 and RFC 1321. A call to this function retains the possibility to update the digest.

Note

This function has a reduced memory footprint version. To learn more, see Reduced Memory Footprint Functions.

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 tagLen < 1 or tagLen exceeds the maximal length of a particular digest.
ippStsContextMatchErr	Indicates an error condition if the context parameter does not match the operation.