Cryptography for Intel® Integrated Performance Primitives Developer Reference

Developer Reference

Contents

GFpECESGetSize_SM2

Gets the size of the SM2 elliptic curve encryption context.

Syntax

IppStatus ippsGFpECESGetSize_SM2(const IppsGFpECState*
pEC
, int*
pSize
);
Include Files
ippcp.h
Parameters
pEC
Pointer to the elliptic curve context.
pSize
Pointer to the size, in bytes, of the ECES context.
Description
The function computes the size of the buffer in bytes for the
IppsECES_StateSM2
 context to be used later. The
pEC
 parameter represents a properly initialized elliptic curve using the encryption scheme.
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.
ippStsNotSupportedModeErr
Indicates an error condition if the
IppsGFpECState
 context parameter defines an elliptic curve over an extension of the prime finite field.

Product and Performance Information

1

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