Visible to Intel only — GUID: GUID-6DBE9672-373E-423B-B947-890FFDEBCD3B
Visible to Intel only — GUID: GUID-6DBE9672-373E-423B-B947-890FFDEBCD3B
TDESEncryptCFB
Encrypts variable length data stream in the CFB mode (deprecated).
Syntax
IppStatus ippsTDESEncryptCFB(const Ipp8u *pSrc, Ipp8u *pDst, int length, int cfbBlkSize, const IppsDESSpec *pCtx1, const IppsDESSpec * pCtx2, const IppsDESSpec *pCtx3, const Ipp8u *pIV, IppsCPPadding padding);
Include Files
ippcp.h
Parameters
pSrc |
Input plaintext data stream of variable length. |
pDst |
Resulting ciphertext data stream. |
pIV |
Initialization vector for TDES CFB mode operation. |
length |
Input data stream length in bytes. |
pCtx1 |
First set of round keys scheduled for TDES internal operations. |
pCtx2 |
Second set of round keys scheduled for TDES internal operations. |
pCtx3 |
Third set of round keys scheduled for TDES internal operations. |
cfbBlkSize |
CFB block size in bytes. |
padding |
IppsCPPaddingNONE padding scheme. |
Description
This function encrypts the input data stream of a variable length according to the cipher scheme specified in NIST SP 800-38A. The function uses three sets of the supplied round keys in the Cipher Feedback (CFB) mode with the initialization vector. The function returns the ciphertext result.
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 length is 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. |