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.