abc/GmSSL
1
0
Fork 0
mirror of https://github.com/guanzhi/GmSSL.git synced 2026-05-12 19:36:27 +08:00
Code Issues Packages Projects Releases Wiki Activity

Update sm9

Browse Source
This commit is contained in:
Zhi Guan
2022-05-11 22:27:55 +08:00
parent d923faef77
commit aa2ab99dcf
4 changed files with 244 additions and 81 deletions
Download Patch File Download Diff File Expand all files Collapse all files

108
src/sm9_key.c
View File

@@ -46,11 +46,21 @@
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <gmssl/sm3.h>
#include <gmssl/sm9.h>
#include <gmssl/error.h>
int sm9_hash1(bignum_t r, const char *id, size_t idlen, uint8_t hid)
// generate h1 in [1, n-1]
int sm9_hash1(sm9_bn_t h1, const char *id, size_t idlen, uint8_t hid)
{
bignum_t h;
sm9_fn_t h;
SM3_CTX ctx1;
SM3_CTX ctx2;
@@ -61,15 +71,99 @@ int sm9_hash1(bignum_t r, const char *id, size_t idlen, uint8_t hid)
sm3_init(&ctx1);
sm3_update(&ctx1, prefix, sizeof(prefix));
sm3_update(&ctx1, id, idlen);
sm3_update(&ctx1, (uint8_t *)id, idlen);
sm3_update(&ctx1, &hid, 1);
memcpy(&ctx2, &ctx1, sizeof(SM3_CTX));
ctx2 = ctx1;
sm3_update(&ctx1, ct1, sizeof(ct1));
sm3_update(&ctx2, ct2, sizeof(ct2));
sm3_finish(&ctx1, buf);
sm3_finish(&ctx2, buf + 32);
// 这个buflen == 64，我们要将长为40的部分取出来，模 N-1 再加1
return -1;
}
void sm9_fn_add(sm9_fn_t r, const sm9_fn_t a, const sm9_fn_t b)
{
}
void sm9_fn_sub(sm9_fn_t r, const sm9_fn_t a, const sm9_fn_t b)
{
}
void sm9_fn_mul(sm9_fn_t r, const sm9_fn_t a, const sm9_fn_t b)
{
}
void sm9_fn_inv(sm9_fn_t r, const sm9_fn_t a)
{
}
int sm9_fn_is_zero(const sm9_fn_t a)
{
return 0;
}
int sm9_sign_master_key_generate(SM9_SIGN_MASTER_KEY *master)
{
// k = rand(1, n-1)
//sm9_bn_rand_range(master->ks, SM9_N);
// Ppubs = k * P2 in E'(F_p^2)
sm9_twist_point_mul_G(&master->Ppubs, master->ks);
return 1;
}
int sm9_enc_master_key_generate(SM9_ENC_MASTER_KEY *master)
{
// k = rand(1, n-1)
//sm9_bn_rand_range(master->ke, SM9_N);
// Ppube = ke * P1 in E(F_p)
sm9_point_mul_generator(&master->Ppube, master->ke);
return 1;
}
int sm9_sign_master_key_extract_key(SM9_SIGN_MASTER_KEY *master, const char *id, size_t idlen, SM9_SIGN_KEY *key)
{
sm9_fn_t t;
sm9_hash1(t, id, idlen, SM9_HID_SIGN);
sm9_fn_add(t, t, master->ks);
if (sm9_fn_is_zero(t)) {
error_print();
return -1;
}
sm9_fn_inv(t, t);
sm9_fn_mul(t, t, master->ks);
sm9_point_mul_generator(&key->ds, t);
return 1;
}
int sm9_enc_master_key_extract_key(SM9_ENC_MASTER_KEY *master, const char *id, size_t idlen,
SM9_ENC_KEY *key)
{
sm9_fn_t t;
sm9_hash1(t, id, idlen, SM9_HID_ENC);
sm9_fn_add(t, t, master->ke);
if (sm9_fn_is_zero(t)) {
error_print();
return -1;
}
sm9_fn_inv(t, t);
sm9_fn_mul(t, t, master->ke);
sm9_twist_point_mul_G(&key->de, t);
return 1;
}