Developer Guide and Reference for Intel® Integrated Performance Primitives Cryptography
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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. |