Developer Reference

Contents

ECCPGetSize

Gets the size of the
IppsECCPState
context.

Syntax

IppStatus ippsECCPGetSize(int
feBitSize
, int *
pSize
);
Include Files
ippcp.h
Parameters
feBitSize
Size (in bits) of the underlying prime number.
pSize
Pointer to the size (in bytes) of the context.
Description
The function computes the size of the context in bytes for the elliptic cryptosystem over a prime finite field GF (
p
).
Context
is a structure
IppsECCPState
designed to store information about the cryptosystem status.
For security reasons, the length of the underlying prime number is restricted to 1 kilobit.
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
.
ippStsSizeErr
Indicates an error condition if the value of the parameter
feBitSize
is less than 2.

Product and Performance Information

1

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