AESEncryptCFB#
Encrypts byte data stream according to AES in the CFB mode.
Syntax#
IppStatus ippsAESEncryptCFB(const Ipp8u* pSrc, Ipp8u* pDst, int srcLen, int cfbBlkSize, const IppsAESSpec* pCtx, const Ipp8u *pIV);
Include Files#
ippcp.h
Parameters#
pSrc |
Pointer to the input plaintext data stream of variable length. |
pDst |
Pointer to the resulting ciphertext data stream. |
srcLen |
Length of the plaintext data stream in bytes. |
cfbBlkSize |
Size of the CFB block in bytes. |
pCtx |
Pointer to the IppsAESSpec context. |
pIV |
Pointer to the initialization vector for the CFB mode operation. |
Description#
The function encrypts the input data stream of variable length according to the CFB mode as specified in 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 input data stream length is less than or equal to zero. |
ippStsUnderRunErr |
Indicates an error condition if srcLenis not divisible by cfbBlkSize parameter value. |
ippStsCFBSizeErr |
Indicates an error condition if the value for cfbBlkSize is illegal. |
ippStsContextMatchErr |
Indicates an error condition if the context parameter does not match the operation. |