Developer Reference for Intel® Integrated Performance Primitives Cryptography
Verifies the parameters of an elliptic curve.
IppStatus ippsGFpECVerify(IppECResult* pResult, IppsGFpECState* pEC, Ipp8u* pScratchBuffer);
ippcp.h
pResult |
Pointer to the verification result. |
pEC |
Pointer to the context of the elliptic curve. |
pScratchBuffer |
Pointer to the scratch buffer. |
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 ⋅ A3 + 3 ⋅ B2 = 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.
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. |