Developer Reference

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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

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804