Developer Reference

Contents

GFpECMulPoint

Multiplies a point on an elliptic curve by a scalar.

Syntax

IppStatus ippsGFpECMulPoint(const IppsGFpECPoint*
pP
, const IppsBigNumState*
pN
, IppsGFpECPoint*
pR
, IppsGFpECState*
pEC
, Ipp8u*
pScratchBuffer
);
Include Files
ippcp.h
Parameters
pP
Pointer to the context of the given point on the elliptic curve.
pN
Pointer to the Big Number context storing the scalar value.
pR
Pointer to the context of the resulting point on the elliptic curve.
pEC
Pointer to the context of the elliptic curve.
pScratchBuffer
Pointer to the scratch buffer. Can be
NULL
.
Description
This function computes the coordinates of the elliptic curve point that equals the product of the given point and a scalar. The following pseudocode represents this operation:
R = scalar ⋅ P
.
If the pointer to the scratch buffer is
NULL
, the function uses a short internal buffer for computations.
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 specified contexts does not match the operation.
ippStsOutOfRangeErr
Indicates an error condition in the following cases:
  • Any of the points does not belong to the finite field over which the elliptic curve is initialized.
  • The scalar value does not belong to the finite field over which the elliptic curve is initialized.

Product and Performance Information

1

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