ECCPCheckPoint
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 isNULL.
- ippStsContextMatchErr
- Indicates an error condition if one of the contexts pointed bypPorpECCis not valid.