Visible to Intel only — GUID: GUID-44160B0D-7B26-478E-9ACF-FB2BDF20E695
Visible to Intel only — GUID: GUID-44160B0D-7B26-478E-9ACF-FB2BDF20E695
SMS4DecryptECB
Decrypts byte data stream by using the SMS4 algorithm in the ECB mode (deprecated).
Syntax
IppStatus ippsSMS4DecryptECB(const Ipp8u* pSrc, Ipp8u* pDst, int len, const IppsSMS4Spec* pCtx);
Include Files
ippcp.h
Parameters
pSrc |
Pointer to the input ciphertext data stream of variable length. |
pDst |
Pointer to the resulting plaintext data stream of variable length. |
len |
Length of the ciphertext data stream in bytes. |
pCtx |
Pointer to the IppsSMS4Spec context. |
Description
The function decrypts the input data stream of a variable length according to the ECB 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 output data stream length is less than or equal to zero. |
ippStsContextMatchErr |
Indicates an error condition if the context parameter does not match the operation. |
ippStsUnderRunErr |
Indicates an error condition if len is not divisible by cipher block size. |