Developer Reference

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AES_CCMGetTag

Generates the message authentication tag in the CCM mode.

Syntax

IppStatus ippsAES_CCMGetTag (Ipp8u* pTag, int
tagLen
, const IppsAES_CCMState*
pState
);
Include Files
ippcp.h
Parameters
pTag
Pointer to the authentication tag.
tagLen
Length of the authentication tag
*pTag
(in bytes).
pState
Pointer to the
IppsAES_CCMState
context.
Description
The function generates and computes the authentication tag of length
tagLen
bytes in the CCM mode as specified in [NIST SP 800-38C]. The
ippsRijndael128GCMGetTag
function does not stop the encryption/decryption and authentication process.
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
.
ippStsContextMatchErr
Indicates an error condition if the context parameter does not match the operation.
ippStsLengthErr
Indicates an error condition if
tagLen
is less than one or
tagLen
exceeds the tag length specified in the previous call to AES_CCMTagLen.

Product and Performance Information

1

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