Rijndael128GCMDecrypt

Decrypts a data buffer in the GCM mode.

Syntax

IppStatus ippsRijndael128GCMDecrypt(const Ipp8u* pSrc, Ipp8u* pDst, Ipp32u len, IppsRijndael128GCMState* pState);

Parameters

pSrc	Pointer to the input ciphertext data stream of a variable length.
pDst	Pointer to the resulting plaintext data stream.
len	Length of the plaintext and ciphertext data stream in bytes.
pState	Pointer to the IppsRijndael128GCMState context.

Description

This function is declared in the ippcp.h file. The function decrypts the input cipher data stream of a variable length according to GCM as specified in [NIST SP 800-38D].

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.