GFpECUserIDHashSM2¶
Computes the hash value of the distinguished identifier of a user.
Syntax¶
IppStatus ippsGFpECUserIDHashSM2, (Ipp8u * pZaDigest, const Ipp8u* pUserID, int userIDLen, const IppsGFpECPoint* pPublicKey, IppsGFpECState* pEC, Ipp8u* pScratchBuffer)
Include Files¶
ippcp.h
Parameters¶
pZaDigest |
Pointer to the resulting digest Za. |
pUserID |
User ID data. |
userIDLen |
Length of user ID data. |
pMsg |
Pointer to the input message. |
pPublicKey |
Public key. |
pEC |
Pointer to the elliptic curve context. |
pScratchBuffer |
Pointer to the scratch buffer for the elliptic curve. |
Description¶
Computes the hash value of the distinguish identifier of a user Za = SM3( ENTL||ID||a||b||Gx||Gy||Px||Py).
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 are NULL. |
ippStsContextMatchErr |
Indicates an error condition if the |
ippStsNotSupportedModeErr |
Indicates an error condition if the |
ippStsOutOfRangeErr |
Indicates an error condition if the invalid input argument range - inpLen < 0 or maxOutLen is not enough for the encryption. |
ippStsInvalidPoint |
Indicates an error condition if pPublicKey is not on the curve. |
ippStsBadArgErr |
Indicates an error condition if userIDLen value <= 0. |
ippStsOutOfRangeErr |
Indicates an error condition if userIDLen value is less or equal to zero or public key length is out of range. |