Developer Reference

Contents

GFpECNegPoint

Computes the inverse of a point.

Syntax

IppStatus ippsGFpECNegPoint(const IppsGFpECPoint*
pP
, IppsGFpECPoint*
pR
, IppsGFpECState*
pEC
);
Include Files
ippcp.h
Parameters
pP
Pointer to the context of the given point on the elliptic curve.
pR
Pointer to the context of the resulting point on the elliptic curve.
pEC
Pointer to the context of the elliptic curve.
Description
For a given point of the elliptic curve over the finite field, this function computes the coordinates of the inverse point. The following pseudocode represents this operation:
R = 0 - P
.
Return Values
ippStsNoErr
Indicates no error. Any other value indicates an error or warning.
ippStsNullPtrErr
Indicates an error condition if any of the specified is
NULL
.
ippStsContextMatchErr
Indicates an error condition if any of the specified contexts does not match the operation.
ippStsOutOfRangeErr
Indicates an error condition if any of the specified points does not belong to the finite field over which the elliptic curve is initialized.

Product and Performance Information

1

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Notice revision #20110804