GFPXECNegPoint

Computes the inverse point for a given point on the elliptic curve over the GF(p^d) field.

Syntax

IppStatus ippsGFPXECNegPoint(const IppsGFPXECPoint *pA, IppsGFPXECPoint *pR, IppsGFPXECState *pEC);

Parameters

pA	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

This function is declared in the ippcp.h file. For a given point of the elliptic curve over the GF(p^d) field, the function computes the coordinates of the inverse point. The following pseudocode represents this operation: R = 0 - A.

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 any of the context parameters does not match the operation.