ECCPGetOrderBitSize
ECCPGetOrderBitSize
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 isNULL.
- ippStsContextMatchErr
- Indicates an error condition if the cryptosystem contextis not valid.