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使用32*256的缓存提升SM2基点倍乘性能 #1558

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使用32*256的缓存提升SM2基点倍乘性能 #1558

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e8b170e
使用缓存提升SM2基点标量乘性能
Aug 28, 2023
3d04d3c
将SM2缓存中间倍乘结果转换为仿射坐标
Aug 30, 2023
f6e9df3
将缓存修改为局部静态变量
Sep 11, 2023
8b0a328
Merge branch 'guanzhi:master' into sm2_use_cache
zhujunling-nj Dec 15, 2023
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将缓存修改为局部静态变量
  • Loading branch information
zhu.junling committed Sep 11, 2023
commit f6e9df37ba94af11c7602fe040e01942944a99a5
9 changes: 3 additions & 6 deletions src/sm2_alg.c
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Original file line number Diff line number Diff line change
Expand Up @@ -21,12 +21,7 @@


#define sm2_print_bn(label,a) sm2_bn_print(stderr,0,0,label,a) // 这个不应该放在这里，应该放在测试文件中

#define USE_SM2_GCACHE
#ifdef USE_SM2_GCACHE
static SM2_JACOBIAN_POINT SM2_JPOINT_GCACHE[32][256];
static int SM2_GCACHE_INITED = 0;
#endif

const SM2_BN SM2_P = {
0xffffffff, 0xffffffff, 0x00000000, 0xffffffff,
Expand Down Expand Up @@ -1076,13 +1071,15 @@ void sm2_init_cache(SM2_JACOBIAN_POINT cache[][256], const SM2_JACOBIAN_POINT *G
sm2_jacobian_point_get_xy(Q, x, y);
sm2_jacobian_point_set_xy(Q, x, y);
}
sm2_jacobian_point_copy(&SM2_JPOINT_GCACHE[i][j], Q);
sm2_jacobian_point_copy(&cache[i][j], Q);
}
}
}

void sm2_jacobian_point_fastmul_generator(SM2_JACOBIAN_POINT *R, const uint8_t k[32])
{
static SM2_JACOBIAN_POINT SM2_JPOINT_GCACHE[32][256];
static int SM2_GCACHE_INITED = 0;
int i;
SM2_JACOBIAN_POINT *P;
SM2_JACOBIAN_POINT _Q, *Q = &_Q;
Expand Down