AESDecryptCTR#
Decrypts a variable length data stream in the CTR mode.
Syntax#
IppStatus ippsAESDecryptCTR(const Ipp8u* pSrc, Ipp8u* pDst, int srcLen,const IppsAESSpec* pCtx, Ipp8u* pCtrValue, int ctrNumBitSize);
Include Files#
ippcp.h
Parameters#
pSrc |
Pointer to the input ciphertext data stream. |
pDst |
Pointer to the resulting plaintext data stream of a variable length. |
srcLen |
Length of the plaintext data stream in bytes. |
pCtx |
Pointer to the IppsAESSpec context. |
pCtrValue |
Pointer to the counter data block. |
ctrNumBitSize |
Number of bits in the specific part of the counter to be incremented. |
Description#
The function decrypts the input data stream of a variable length according to the CTR mode as specified in the NIST SP 800-38A.
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 output data stream length is less than or equal to zero. |
ippStsCTRSizeErr |
Indicates an error condition if the value of the ctrNumBitSize is illegal. |
ippStsContextMatchErr |
Indicates an error condition if the context parameter does not match the operation. |