//?\file:sm2.c
//SM2?Algorithm
//2011-11-10
//author:goldboar
//email:goldboar@163.com
//depending:opnessl?library

//SM2?Standards:?http://www.oscca.gov.cn/News/201012/News_1197.htm

#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?“kdf.h“

#define??NID_X9_62_prime_field?406
static?void?BNPrintf（BIGNUM*?bn）
{
	char?*p=NULL;
	p=BN_bn2hex（bn）;
	printf（“%s“p）;
	OPENSSL_free（p）;
}


static?int?sm2_sign_setup（EC_KEY?*eckey?BN_CTX?*ctx_in?BIGNUM?**kp?BIGNUM?**rp）
{
	BN_CTX???*ctx?=?NULL;
	BIGNUM	?*k?=?NULL?*r?=?NULL?*order?=?NULL?*X?=?NULL;
	EC_POINT?*tmp_point=NULL;
	const?EC_GROUP?*group;
	int?	?ret?=?0;

	if?（eckey?==?NULL?||?（group?=?EC_KEY_get0_group（eckey））?==?NULL）
	{
		ECDSAerr（ECDSA_F_ECDSA_SIGN_SETUP?ERR_R_PASSED_NULL_PARAMETER）;
		return?0;
	}

	if?（ctx_in?==?NULL）?
	{
		if?（（ctx?=?BN_CTX_new（））?==?NULL）
		{
			ECDSAerr（ECDSA_F_ECDSA_SIGN_SETUPERR_R_MALLOC_FAILURE）;
			return?0;
		}
	}
	else
		ctx?=?ctx_in;

	k?????=?BN_new（）;	/*?this?value?is?later?returned?in?*kp?*/
	r?????=?BN_new（）;	/*?this?value?is?later?returned?in?*rp?*/
	order?=?BN_new（）;
	X?????=?BN_new（）;
	if?（!k?||?!r?||?!order?||?!X）
	{
		ECDSAerr（ECDSA_F_ECDSA_SIGN_SETUP?ERR_R_MALLOC_FAILURE）;
		goto?err;
	}
	if?（（tmp_point?=?EC_POINT_new（group））?==?NULL）
	{
		ECDSAerr（ECDSA_F_ECDSA_SIGN_SETUP?ERR_R_EC_LIB）;
		goto?err;
	}
	if?（!EC_GROUP_get_order（group?order?ctx））
	{
		ECDSAerr（ECDSA_F_ECDSA_SIGN_SETUP?ERR_R_EC_LIB）;
		goto?err;
	}
	
	do
	{
		/*?get?random?k?*/	
		do
			if?（!BN_rand_range（k?order））
			{
				ECDSAerr（ECDSA_F_ECDSA_SIGN_SETUP?ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED）;	
				goto?err;
			}
		while?（BN_is_zero（k））;

		/*?compute?r?the?x-coordinate?of?generator?*?k?*/
		if?（!EC_POINT_mul（group?tmp_point?k?NULL?NULL?ctx））
		{
			ECDSAerr（ECDSA_F_ECDSA_SIGN_SETUP?ERR_R_EC_LIB）;
			goto?err;
		}
		if?（EC_METHOD_get_field_type（EC_GROUP_method_of（group））?==?NID_X9_62_prime_field）
		{
			if?（!EC_POINT_get_affine_coordinates_GFp（group
				tmp_point?X?NULL?ctx））
			{
				ECDSAerr（ECDSA_F_ECDSA_SIGN_SETUPERR_R_EC_LIB）;
				goto?err;
			}
		}
		else?/*?NID_X9_62_characteristic_two_field?*/
		{
			if?（!EC_POINT_get_affine_coordinates_GF2m（group
				tmp_point?X?NULL?ctx））
			{
				ECDSAerr（ECDSA_F_ECDSA_SIGN_SETUPERR_R_EC_LIB）;
				goto?err;
			}
		}
		if?（!BN_nnmod（r?X?order?ctx））
		{
			ECDSAerr（ECDSA_F_ECDSA_SIGN_SETUP?ERR_R_BN_LIB）;
			goto?err;
		}
	}
	while?（BN_is_zero（r））;

	/*?compute?the?inverse?of?k?*/
//?	if?（!BN_mod_inverse（k?k?order?ctx））
//?	{
//?		ECDSAerr（ECDSA_F_ECDSA_SIGN_SETUP?ERR_R_BN_LIB）;
//?		goto?err;	
//?	}
	/*?clear?old?values?if?necessary?*/
	if?（*rp?!=?NULL）
		BN_clear_free（*rp）;
	if?（*kp?!=?NULL）?
		BN_clear_free（*kp）;
	/*?save?the?pre-computed?values??*/

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件?????176175??2013-05-27?14:51??sm2\Debug\sm2.exe

?????文件?????258020??2013-05-27?14:51??sm2\Debug\sm2.ilk

?????文件??????33498??2013-05-27?14:51??sm2\Debug\sm2.obj

?????文件????4308936??2013-05-27?14:51??sm2\Debug\sm2.pch

?????文件?????377856??2013-05-27?14:51??sm2\Debug\sm2.pdb

?????文件????1243611??2013-05-27?14:51??sm2\Debug\sm2.sbr

?????文件??????41773??2013-05-27?14:51??sm2\Debug\sm2test.obj

?????文件????1152470??2013-05-27?14:51??sm2\Debug\sm2test.sbr

?????文件??????50176??2013-05-27?15:07??sm2\Debug\vc60.idb

?????文件??????69632??2013-05-27?14:51??sm2\Debug\vc60.pdb

?????文件???????1368??2011-11-10?17:49??sm2\kdf.h

?????文件????1089536??2007-07-31?15:55??sm2\libeay32.dll

?????文件?????657238??2007-07-31?15:55??sm2\libeay32.lib

?????文件??????19172??2013-05-27?14:46??sm2\sm2.c

?????文件???????3545??2011-11-11?09:42??sm2\sm2.dsp

?????文件????????529??2011-11-09?18:45??sm2\sm2.dsw

?????文件????????909??2011-11-10?18:12??sm2\sm2.h

?????文件??????41984??2013-05-27?16:26??sm2\sm2.ncb

?????文件??????48640??2013-05-27?16:26??sm2\sm2.opt

?????文件???????1142??2013-05-27?14:51??sm2\sm2.plg

?????文件??????13569??2011-11-23?18:38??sm2\sm2test.c

?????目錄??????????0??2013-05-27?14:51??sm2\Debug

?????目錄??????????0??2013-05-27?16:26??sm2

-----------?---------??----------?-----??----

??????????????9589779????????????????????23