Developer Reference

Contents

ECCPGetPoint

Retrieves coordinates of the point on the elliptic curve defined over GF(p).

Syntax

IppStatus ippsECCPGetPoint(IppsBigNumState*
pX
, IppsBigNumState*
pY
, const IppsECCPPointState*
pPoint
, IppsECCPState*
pECC
);
Include Files
ippcp.h
Parameters
pX
Pointer to the
x
-coordinate of the point on the elliptic curve.
pY
Pointer to the
y
-coordinate of the point on the elliptic curve.
pPoint
Pointer to the context of the elliptic curve point.
pECC
Pointer to the context of the elliptic cryptosystem.
Description
The function retrieves the coordinates of the point on the elliptic curve defined over a prime finite field GF(
p
) from the point context and allocates them in accordance with the set pointers
pX
and
pY
.
The elliptic curve domain parameters must be hitherto defined by one of the functions:
ECCPSet
or
ECCPSetStd
.
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 one of the contexts pointed by
pX
,
pY
,
pPoint
, or
pECC
is not valid.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804