Visible to Intel only — GUID: GUID-561718A9-00F6-4B18-986D-14160AAB575F
Visible to Intel only — GUID: GUID-561718A9-00F6-4B18-986D-14160AAB575F
AES_CMACUpdate
Updates the MAC value depending on the current input message stream of the specified length.
Syntax
IppStatus ippsAES_CMACUpdate(const Ipp8u *pSrc, int len, IppsAES_CMACState* pState);
Include Files
ippcp.h
Parameters
pSrc |
Pointer to the buffer containing a part or the entire message. |
len |
Length of the actual part of the message in bytes. |
pState |
Pointer to the IppsAES_CMACState context. |
Description
The function updates the MAC value depending on the current input message stream of the specified length. The function first integrates the previous partial message block with the input message stream and then partitions the obtained message into multiple message blocks with a possible additional partial block. For each message block, the function uses the AES cipher to transform the input block into a new chaining 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 the input data stream length is less than zero. |
ippStsContextMatchErr |
Indicates an error condition if the context parameter does not match the operation. |