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Use z256 and jacobian coordinates as inner presentation of SM2 point

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This commit is contained in:
Zhi Guan
2024-04-18 21:27:00 +08:00
parent 549c68d2df
commit e9bbcf5490
18 changed files with 312 additions and 646 deletions
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29
include/gmssl/sm2_z256.h
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@@ -15,14 +15,19 @@
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <gmssl/sm2.h>
#ifdef __cplusplus
extern "C" {
#endif
// z256 means compact presentation of uint256
typedef uint64_t sm2_z256_t[4];
void sm2_z256_set_one(sm2_z256_t r);
void sm2_z256_set_zero(sm2_z256_t r);
int sm2_z256_rand_range(uint64_t r[4], const uint64_t range[4]);
void sm2_z256_copy(uint64_t r[4], const uint64_t a[4]);
void sm2_z256_copy_conditional(uint64_t dst[4], const uint64_t src[4], uint64_t move);
@@ -38,7 +43,7 @@ void sm2_z256_mul(uint64_t r[8], const uint64_t a[4], const uint64_t b[4]);
int sm2_z256_get_booth(const uint64_t a[4], unsigned int window_size, int i);
void sm2_z256_from_hex(uint64_t r[4], const char *hex);
int sm2_z256_equ_hex(const uint64_t a[4], const char *hex);
int sm2_z256_print(FILE *fp, int ind, int fmt, const char *label, const uint64_t a[4]);
int sm2_z256_print(FILE *fp, int ind, int fmt, const char *label, const sm2_z256_t a);
void sm2_z256_modp_add(uint64_t r[4], const uint64_t a[4], const uint64_t b[4]);
void sm2_z256_modp_dbl(uint64_t r[4], const uint64_t a[4]);
@@ -79,7 +84,7 @@ typedef struct {
} SM2_Z256_POINT;
void sm2_z256_point_set_infinity(SM2_Z256_POINT *P);
void sm2_z256_point_from_bytes(SM2_Z256_POINT *P, const uint8_t in[64]); // 检查is_on_curve
int sm2_z256_point_from_bytes(SM2_Z256_POINT *P, const uint8_t in[64]);
void sm2_z256_point_to_bytes(const SM2_Z256_POINT *P, uint8_t out[64]);
int sm2_z256_point_is_at_infinity(const SM2_Z256_POINT *P);
@@ -131,12 +136,20 @@ int sm2_z256_point_from_x_bytes(SM2_Z256_POINT *P, const uint8_t x_bytes[32], in
int sm2_z256_point_from_hash(SM2_Z256_POINT *R, const uint8_t *data, size_t datalen, int y_is_odd);
int sm2_z256_point_from_octets(SM2_Z256_POINT *P, const uint8_t *in, size_t inlen);
int sm2_z256_point_to_uncompressed_octets(const SM2_Z256_POINT *P, uint8_t out[65]);
int sm2_z256_point_to_compressed_octets(const SM2_Z256_POINT *P, uint8_t out[33]);
int sm2_z256_point_from_octets(SM2_Z256_POINT *P, const uint8_t *in, size_t inlen);
/*
RFC 5480 Elliptic Curve Cryptography Subject Public Key Information
ECPoint ::= OCTET STRING
*/
#define SM2_POINT_MAX_SIZE (2 + 65)
int sm2_z256_point_to_der(const SM2_Z256_POINT *P, uint8_t **out, size_t *outlen);
int sm2_z256_point_from_der(SM2_Z256_POINT *P, const uint8_t **in, size_t *inlen);
int sm2_z256_point_print(FILE *fp, int fmt, int ind, const char *label, const SM2_Z256_POINT *P);
// 这些函数还是放到sm2_sign里面好了，反正这个依赖关系是处理不了的
int sm2_do_sign_fast(const uint64_t d[4], const uint8_t dgst[32], SM2_SIGNATURE *sig);
int sm2_do_sign_pre_compute(uint64_t k[4], uint64_t x1[4]);
int sm2_do_sign_fast_ex(const uint64_t d[4], const uint64_t k[4], const uint64_t x1[4], const uint8_t dgst[32], SM2_SIGNATURE *sig);
int sm2_do_verify_fast(const SM2_Z256_POINT *P, const uint8_t dgst[32], const SM2_SIGNATURE *sig);
#ifdef __cplusplus
}