Visible to Intel only — GUID: GUID-8ED574D7-D448-43C6-BC87-A037296F508E
Visible to Intel only — GUID: GUID-8ED574D7-D448-43C6-BC87-A037296F508E
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
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.
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. |