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

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