Developer Reference

Contents

ECCPNegativePoint

Finds an elliptic curve
point which is an additive inverse for the given point over GF(p).

Syntax

IppStatus ippsECCPNegativePoint(const IppsECCPPointState*
pP
, IppsECCPPointState*
pR
, IppsECCPState*
pECC
);
Include Files
ippcp.h
Parameters
pP
Pointer to the elliptic curve point
P
.
pR
Pointer to the elliptic curve point
R
.
pECC
Pointer to the context of the elliptic cryptosystem.
Description
The function finds an elliptic curve point
R
over a prime finite field GF(
p
), which is an additive inverse of the given point
P
, that is,
R
=
- P
.
The elliptic curve domain parameters must be hitherto defined by one of the functions:
ECCPSet
or
ECCPSetStd
.
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
,
pR
, 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.