GFpECMulPoint
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 beNULL.
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 isNULL.
- 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.