GFpECKeyExchangeSM2_Init

Initializes the SM2 Key Exchange Elliptic Curve context.

Syntax

IppStatus ippsGFpECKeyExchangeSM2_Init (IppsGFpECKeyExchangeSM2State* pKE, IppsKeyExchangeRoleSM2 role, IppsGFpECState* pEC)

Include Files

ippcp.h

Parameters

pKE	Pointer to the buffer begging initialization.
role	Role in SM2 key exchange Requester (User A)/Responder(User B) - ippKESM2Requester/ ippKESM2Responder.
pEC	Pointer to the elliptic curve context.

Description

The function initializes the memory buffer pointed to by pKE as IppsGFpECKeyExchangeSM2State.

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 IppsGFpECState context parameter does not match the operation.
ippStsNotSupportedModeErr	Indicates an error condition if the IppsGFpECState context parameter defines an elliptic curve over an extension of the prime finite field.
ippStsOutOfRangeErr	Indicates an error condition if the length in bits of the elliptic curve is less than the length in bits of the SM3 hash digest..
ippStsBadArgErr	Indicates an error condition if the role is not equal to ippKESM2Requester or ippKESM2Responder.