ECCPCheckPoint¶
Checks correctness of the point on the elliptic curve defined over GF(p).
Syntax¶
IppStatus ippsECCPCheckPoint(const IppsECCPPointState* pP, IppECResult* pResult, IppsECCPState* pECC);
Include Files¶
ippcp.h
Parameters¶
pP |
Pointer to the elliptic curve point. |
pResult |
Pointer to the result of the check. |
pECC |
Pointer to the context of the elliptic cryptosystem. |
Description¶
The function checks the correctness of the point on the elliptic curve defined over a prime finite field GF(p) and allocates the result of the check in accordance with the pointer pResult.
The elliptic curve domain parameters must be hitherto defined by one of the functions: ECCPSet or ECCPSetStd.
The result of the check for the correctness of the point can take one of the following values:
ippECValid |
Point is on the elliptic curve. |
ippECPointIsNotValid |
Point is not on the elliptic curve and is not the point at infinity. |
ippECPointIsAtInfinite |
Point is the point at infinity. |
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. |
ippStsContextMatchErr |
Indicates an error condition if one of the contexts pointed by pP or pECC is not valid. |