XCBCRijndael128MessageTag

Computes the authentication tag of an entire message.

Syntax

IppStatus ippsXCBCRijndael128MessageTag(const Ipp8u* pMsg, Ipp32u msgLen, const Ipp8u* pKey, IppsRijndaelKeyLength keyLen, Ipp8u* pDstTag, Ipp32u tagLen);

Parameters

pMsg

Pointer to the input message.

msgLen

Length of the message (in bytes).

pKey

Pointer to the authentication key.

keyLen

Length of the key.

pDstTag

Pointer to the authentication tag.

tagLen

Length of the tag (in bytes).

Description

This function is declared in the ippcp.h file. The function performs all steps of the authentication tag calculation, that is, the initialize, update, and final steps, in a single call. You can use this function when your application can access the entire message.

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 length parameters do not meet any of the following conditions:

keyLen = IppsRijndaelKey128 or keyLen = IppsRijndaelKey192 or keyLen = IppsRijndaelKey256

1 tagLen 16.

See Also

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