Developer Reference

Contents

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.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.