Developer Reference

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AES_CMACGetTag

Computes the MAC value of the processed part of the message.

Syntax

IppStatus ippsAES_CMACGetTag(Ipp8u*
pMD
, int
mdLen
, const IppsAES_CMACState *
pState
);
Include Files
ippcp.h
Parameters
pMD
Pointer to the MAC value.
mdLen
Specified length of the MAC.
pState
Pointer to the
IppsAES_CMACState
context.
Description
The function computes the MAC value based on the current context. A call to this function retains the possibility to update the MAC 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
.
ippStsLengthErr
Indicates an error condition if
mdLen
is less than 1 or greater than cipher's data block length.
ippStsContextMatchErr
Indicates an error condition if the context parameter does not match the operation.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804