Developer Reference

Contents

SM3GetTag

Computes the current SM3 digest value of the processed part of the message.

Syntax

IppStatus ippsSM3GetTag(Ipp8u*
pTag
, Ipp32u
tagLen
, const IppsSM3State*
pCtx
);
Include Files
ippcp.h
Parameters
pTag
Pointer to the authentication tag.
tagLen
Length of the tag (in bytes).
pCtx
Pointer to the
IppsSM3State
context.
Description
The function computes the message digest based on the current context as specified in [SM3]. 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.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.