Developer Reference

Contents

mbx_sm2_ecpublic_key

Computes a public key.

Syntax

mbx_status mbx_sm2_ecpublic_key_mb8(int64u*
pa_pubx
[8], int64u*
pa_puby
[8], int64u*
pa_pubz
[8], const int64u* const
pa_skey
[8], int8u*
pBuffer
);
mbx_status mbx_sm2_ecpublic_key_ssl_mb8(BIGNUM*
pa_pubx
[8], BIGNUM*
pa_puby
[8], BIGNUM*
pa_pubz
[8], const BIGNUM* const
pa_skey
[8], int8u*
pBuffer
);
Include Files
crypto_mb/ec_sm2.h
Parameters
pa_pubx
Array of pointers to the vectors of computed public key x-coordinates.
pa_puby
Array of pointers to the vectors of computed public key y-coordinates.
pa_pubz
Array of pointers to the vectors of computed public key z-coordinates.
pa_skey
Array of pointers to the vectors of private keys.
pBuffer
Pointer to the work buffer.
Description
The function computes public keys using private keys specified by the
pa_skey
parameter. If z-coordinate of computed public is required (
pa_pubz
is not
NULL
), then computed public keys are stored using projective coordinates. If
pa_pubz
is
NULL
, then computed public keys are stored using affine coordinates.
The work buffer specified by the
pBuffer
parameter is not currently used and can be
NULL
.
The function above has own "twin" with "_ssl" in the name. The only difference in comparison with
mbx_sm2_ecpublic_key()
is representation of the parameters.
mbx_sm2_ecpublic_key_ssl()
functions use BIGNUM datatype instead of vector.
Return Values
The
mbx_sm2_ecpublic_key()
function returns the status that indicates whether the operation completed successfully or not. The status value of 0 indicates that all operations completed successfully. The error condition can be analyzed by the
MBX_GET_STS()
call.

Product and Performance Information

1

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