Computes the current HMAC value of the processed part of the message.
IppStatus ippsHMACSHA224GetTag(Ipp8u* pDstTag, Ipp32u tagLen, const IppsHMACSHA224State* pState);
pDstTag |
Pointer to the authentication tag. |
tagLen |
Length of the tag (in bytes). |
pState |
Pointer to the IppsHMACSHA224State context. |
This function is declared in the ippcp.h file. The function computes the message digest based on the current context as specified in [FIPS PUB 198]. A call to this function retains the possibility to update the digest.
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. |
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