Developer Reference

Contents

GFpECVerify

Verifies the parameters of an elliptic curve.

Syntax

IppStatus ippsGFpECVerify(IppECResult*
pResult
, IppsGFpECState*
pEC
, Ipp8u*
pScratchBuffer
);
Include Files
ippcp.h
Parameters
pResult
Pointer to the verification result.
pEC
Pointer to the context of the elliptic curve.
pScratchBuffer
Pointer to the scratch buffer.
Description
This function verifies the parameters of the elliptic curve from the input 
IppsGFpECState
 context and returns the result in 
pResult
. The result of the verification may have the following values:
ippECValid
Parameters are valid.
ippECIsZeroDiscriminant
4 ⋅ A
3
+ 3 ⋅ B
2
= 0
.
ippECPointIsAtInfinity
Base point 
G = (x, y)
 is a point at infinity.
ippECPointIsNotValid
Base point 
G = (x, y)
 does not belong to the curve.
ippECInvalidOrder
Order of the base point 
G = (x, y)
 is invalid.
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 the
IppsGFpECState
context parameter does not match the operation.

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