Cryptography for Intel® Integrated Performance Primitives Developer Reference

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

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