ECCPGetOrderBitSize

Developer Reference for Intel® Integrated Performance Primitives Cryptography

Retrieves order size of the elliptic curve base point over GF(p) in bits.

Syntax

IppStatus ippsECCPGetOrderBitSize(int* pBitSize, IppsECCPState* pECC);

Include Files

ippcp.h

Parameters

pBitSize	Pointer to the size of the base point (in bits).
pECC	Pointer to the cryptosystem context.

Description

The function retrieves the order size (in bits) of the elliptic curve base point G from the context of elliptic cryptosystem over a prime finite field GF(p) and allocates it in accordance with the pointer pBitsSize. 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 the cryptosystem contextis not valid.