mirror of
https://github.com/guanzhi/GmSSL.git
synced 2026-05-07 08:56:17 +08:00
Adjust SM9 files
This commit is contained in:
Zhi Guan
@@ -40,13 +40,15 @@ set(src
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src/sm2_z256.c
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src/sm2_z256_table.c
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src/sm2_key.c
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src/sm2_sign.c
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src/sm2_enc.c
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src/sm2_exch.c
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src/sm2_sign.c
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src/sm9_z256.c
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src/sm9_z256_table.c
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src/sm9_key.c
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src/sm9_lib.c
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src/sm9_sign.c
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src/sm9_enc.c
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src/sm9_exch.c
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src/zuc.c
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src/zuc_modes.c
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src/hash_drbg.c
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@@ -16,221 +16,13 @@
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#include <stdint.h>
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#include <gmssl/sm3.h>
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#include <gmssl/sm2.h>
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#include <gmssl/sm9_z256.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef uint64_t sm9_z256_t[4];
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void sm9_z256_set_one(sm9_z256_t r);
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void sm9_z256_set_zero(sm9_z256_t r);
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void sm9_z256_copy(sm9_z256_t r, const sm9_z256_t a);
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void sm9_z256_copy_conditional(sm9_z256_t r, const sm9_z256_t a, uint64_t move);
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int sm9_z256_cmp(const sm9_z256_t a, const sm9_z256_t b);
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uint64_t sm9_z256_is_zero(const sm9_z256_t a);
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uint64_t sm9_z256_equ(const sm9_z256_t a, const sm9_z256_t b);
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uint64_t sm9_z256_add(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
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uint64_t sm9_z256_sub(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
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void sm9_z256_mul(uint64_t r[8], const sm9_z256_t a, const sm9_z256_t b);
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void sm9_z256_from_bytes(sm9_z256_t r, const uint8_t in[32]);
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void sm9_z256_to_bytes(const sm9_z256_t a, uint8_t out[32]);
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int sm9_z256_from_hex(sm9_z256_t r, const char *hex);
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void sm9_z256_to_hex(const sm9_z256_t r, char hex[64]);
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int sm9_z256_equ_hex(const sm9_z256_t a, const char *hex);
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void sm9_z256_to_bits(const sm9_z256_t a, char bits[256]);
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int sm9_z256_rand_range(sm9_z256_t r, const sm9_z256_t range);
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void sm9_z256_print_bn(const char *prefix, const sm9_z256_t a);
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int sm9_z256_print(FILE *fp, int ind, int fmt, const char *label, const sm9_z256_t a);
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const uint64_t *sm9_z256_prime(void);
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void sm9_z256_modp_add(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
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void sm9_z256_modp_sub(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
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void sm9_z256_modp_dbl(sm9_z256_t r, const sm9_z256_t a);
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void sm9_z256_modp_tri(sm9_z256_t r, const sm9_z256_t a);
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void sm9_z256_modp_haf(sm9_z256_t r, const sm9_z256_t a);
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void sm9_z256_modp_neg(sm9_z256_t r, const sm9_z256_t a);
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void sm9_z256_modp_to_mont(sm9_z256_t r, const sm9_z256_t a);
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void sm9_z256_modp_from_mont(sm9_z256_t r, const sm9_z256_t a);
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void sm9_z256_modp_mont_mul(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
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void sm9_z256_modp_mont_sqr(sm9_z256_t r, const sm9_z256_t a);
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void sm9_z256_modp_mont_pow(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t e);
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void sm9_z256_modp_mont_inv(sm9_z256_t r, const sm9_z256_t a);
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const uint64_t *sm9_z256_order(void);
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void sm9_z256_modn_add(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
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void sm9_z256_modn_sub(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
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void sm9_z256_modn_mul(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
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void sm9_z256_modn_pow(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t e);
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void sm9_z256_modn_inv(sm9_z256_t r, const sm9_z256_t a);
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void sm9_z256_modn_from_hash(sm9_z256_t h, const uint8_t Ha[40]);
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typedef sm9_z256_t sm9_z256_fp2_t[2];
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void sm9_z256_fp2_set_one(sm9_z256_fp2_t r);
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void sm9_z256_fp2_set_zero(sm9_z256_fp2_t r);
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int sm9_z256_fp2_is_one(const sm9_z256_fp2_t a);
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int sm9_z256_fp2_is_zero(const sm9_z256_fp2_t a);
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int sm9_z256_fp2_equ(const sm9_z256_fp2_t a, const sm9_z256_fp2_t b);
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void sm9_z256_fp2_copy(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
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int sm9_z256_fp2_rand(sm9_z256_fp2_t r);
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void sm9_z256_fp2_to_bytes(const sm9_z256_fp2_t a, uint8_t buf[64]);
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int sm9_z256_fp2_from_bytes(sm9_z256_fp2_t r, const uint8_t buf[64]);
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void sm9_z256_fp2_to_hex(const sm9_z256_fp2_t a, char hex[129]);
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int sm9_z256_fp2_from_hex(sm9_z256_fp2_t r, const char hex[129]);
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void sm9_z256_fp2_add(sm9_z256_fp2_t r, const sm9_z256_fp2_t a, const sm9_z256_fp2_t b);
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void sm9_z256_fp2_dbl(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
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void sm9_z256_fp2_tri(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
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void sm9_z256_fp2_sub(sm9_z256_fp2_t r, const sm9_z256_fp2_t a, const sm9_z256_fp2_t b);
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void sm9_z256_fp2_neg(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
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void sm9_z256_fp2_a_mul_u(sm9_z256_fp2_t r, sm9_z256_fp2_t a);
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void sm9_z256_fp2_mul(sm9_z256_fp2_t r, const sm9_z256_fp2_t a, const sm9_z256_fp2_t b);
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void sm9_z256_fp2_mul_u(sm9_z256_fp2_t r, const sm9_z256_fp2_t a, const sm9_z256_fp2_t b);
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void sm9_z256_fp2_mul_fp(sm9_z256_fp2_t r, const sm9_z256_fp2_t a, const sm9_z256_t k);
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void sm9_z256_fp2_sqr(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
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void sm9_z256_fp2_sqr_u(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
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void sm9_z256_fp2_inv(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
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void sm9_z256_fp2_div(sm9_z256_fp2_t r, const sm9_z256_fp2_t a, const sm9_z256_fp2_t b);
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void sm9_z256_fp2_haf(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
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void sm9_z256_fp2_conjugate(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
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void sm9_z256_fp2_frobenius(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
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typedef sm9_z256_fp2_t sm9_z256_fp4_t[2];
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int sm9_z256_fp4_is_zero(const sm9_z256_fp4_t a);
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int sm9_z256_fp4_equ(const sm9_z256_fp4_t a, const sm9_z256_fp4_t b);
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int sm9_z256_fp4_rand(sm9_z256_fp4_t r);
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void sm9_z256_fp4_copy(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
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void sm9_z256_fp4_to_bytes(const sm9_z256_fp4_t a, uint8_t buf[128]);
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int sm9_z256_fp4_from_bytes(sm9_z256_fp4_t r, const uint8_t buf[128]);
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int sm9_z256_fp4_from_hex(sm9_z256_fp4_t r, const char hex[259]);
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void sm9_z256_fp4_to_hex(const sm9_z256_fp4_t a, char hex[259]);
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void sm9_z256_fp4_add(sm9_z256_fp4_t r, const sm9_z256_fp4_t a, const sm9_z256_fp4_t b);
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void sm9_z256_fp4_dbl(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
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void sm9_z256_fp4_sub(sm9_z256_fp4_t r, const sm9_z256_fp4_t a, const sm9_z256_fp4_t b);
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void sm9_z256_fp4_neg(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
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void sm9_z256_fp4_haf(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
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void sm9_z256_fp4_a_mul_v(sm9_z256_fp4_t r, sm9_z256_fp4_t a);
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void sm9_z256_fp4_mul(sm9_z256_fp4_t r, const sm9_z256_fp4_t a, const sm9_z256_fp4_t b);
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void sm9_z256_fp4_mul_fp(sm9_z256_fp4_t r, const sm9_z256_fp4_t a, const sm9_z256_t k);
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void sm9_z256_fp4_mul_fp2(sm9_z256_fp4_t r, const sm9_z256_fp4_t a, const sm9_z256_fp2_t b0);
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void sm9_z256_fp4_mul_v(sm9_z256_fp4_t r, const sm9_z256_fp4_t a, const sm9_z256_fp4_t b);
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void sm9_z256_fp4_sqr(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
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void sm9_z256_fp4_sqr_v(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
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void sm9_z256_fp4_inv(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
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void sm9_z256_fp4_frobenius(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
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void sm9_z256_fp4_conjugate(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
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void sm9_z256_fp4_frobenius2(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
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void sm9_z256_fp4_frobenius3(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
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typedef sm9_z256_fp4_t sm9_z256_fp12_t[3];
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void sm9_z256_fp12_set_one(sm9_z256_fp12_t r);
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void sm9_z256_fp12_set_zero(sm9_z256_fp12_t r);
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void sm9_z256_fp12_copy(sm9_z256_fp12_t r, const sm9_z256_fp12_t a);
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int sm9_z256_fp12_rand(sm9_z256_fp12_t r);
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int sm9_z256_fp12_from_hex(sm9_z256_fp12_t r, const char hex[779]); // 779 = 64*12 + 11
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void sm9_z256_fp12_to_hex(const sm9_z256_fp12_t a, char hex[779]);
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void sm9_z256_fp12_to_bytes(const sm9_z256_fp12_t a, uint8_t buf[384]);
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int sm9_z256_fp12_from_bytes(sm9_z256_fp12_t r, const uint8_t buf[384]);
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void sm9_z256_fp12_print(const char *prefix, const sm9_z256_fp12_t a);
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void sm9_z256_fp12_set(sm9_z256_fp12_t r, const sm9_z256_fp4_t a0, const sm9_z256_fp4_t a1, const sm9_z256_fp4_t a2);
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int sm9_z256_fp12_equ(const sm9_z256_fp12_t a, const sm9_z256_fp12_t b);
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void sm9_z256_fp12_add(sm9_z256_fp12_t r, const sm9_z256_fp12_t a, const sm9_z256_fp12_t b);
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void sm9_z256_fp12_dbl(sm9_z256_fp12_t r, const sm9_z256_fp12_t a);
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void sm9_z256_fp12_tri(sm9_z256_fp12_t r, const sm9_z256_fp12_t a);
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void sm9_z256_fp12_sub(sm9_z256_fp12_t r, const sm9_z256_fp12_t a, const sm9_z256_fp12_t b);
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void sm9_z256_fp12_neg(sm9_z256_fp12_t r, const sm9_z256_fp12_t a);
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void sm9_z256_fp12_mul(sm9_z256_fp12_t r, const sm9_z256_fp12_t a, const sm9_z256_fp12_t b);
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void sm9_z256_fp12_sqr(sm9_z256_fp12_t r, const sm9_z256_fp12_t a);
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void sm9_z256_fp12_inv(sm9_z256_fp12_t r, const sm9_z256_fp12_t a);
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void sm9_z256_fp12_pow(sm9_z256_fp12_t r, const sm9_z256_fp12_t a, const sm9_z256_t k);
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void sm9_z256_fp12_frobenius(sm9_z256_fp12_t r, const sm9_z256_fp12_t x);
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void sm9_z256_fp12_frobenius2(sm9_z256_fp12_t r, const sm9_z256_fp12_t x);
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void sm9_z256_fp12_frobenius3(sm9_z256_fp12_t r, const sm9_z256_fp12_t x);
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void sm9_z256_fp12_frobenius6(sm9_z256_fp12_t r, const sm9_z256_fp12_t x);
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// E(F_p): y^2 = x^3 + 5
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typedef struct {
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sm9_z256_t X; // is mont(X)
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sm9_z256_t Y; // is mont(Y)
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sm9_z256_t Z; // is mont(Z)
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} SM9_Z256_POINT;
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const SM9_Z256_POINT *sm9_z256_generator(void);
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int sm9_z256_point_from_hex(SM9_Z256_POINT *R, const char hex[129]);
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int sm9_z256_point_is_at_infinity(const SM9_Z256_POINT *P);
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void sm9_z256_point_set_infinity(SM9_Z256_POINT *R);
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void sm9_z256_point_get_xy(const SM9_Z256_POINT *P, sm9_z256_t x, sm9_z256_t y);
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int sm9_z256_point_equ(const SM9_Z256_POINT *P, const SM9_Z256_POINT *Q);
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int sm9_z256_point_is_on_curve(const SM9_Z256_POINT *P);
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void sm9_z256_point_dbl(SM9_Z256_POINT *R, const SM9_Z256_POINT *P);
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void sm9_z256_point_neg(SM9_Z256_POINT *R, const SM9_Z256_POINT *P);
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void sm9_z256_point_add(SM9_Z256_POINT *R, const SM9_Z256_POINT *P, const SM9_Z256_POINT *Q);
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void sm9_z256_point_sub(SM9_Z256_POINT *R, const SM9_Z256_POINT *P, const SM9_Z256_POINT *Q);
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void sm9_z256_point_mul(SM9_Z256_POINT *R, const sm9_z256_t k, const SM9_Z256_POINT *P);
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void sm9_z256_point_mul_generator(SM9_Z256_POINT *R, const sm9_z256_t k);
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int sm9_z256_point_print(FILE *fp, int fmt, int ind, const char *label, const SM9_Z256_POINT *P);
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int sm9_z256_point_to_uncompressed_octets(const SM9_Z256_POINT *P, uint8_t octets[65]);
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int sm9_z256_point_from_uncompressed_octets(SM9_Z256_POINT *P, const uint8_t octets[65]);
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typedef struct {
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uint64_t X[4];
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uint64_t Y[4];
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} SM9_Z256_AFFINE_POINT;
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void sm9_z256_point_copy_affine(SM9_Z256_POINT *R, const SM9_Z256_AFFINE_POINT *P);
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void sm9_z256_point_add_affine(SM9_Z256_POINT *R, const SM9_Z256_POINT *P, const SM9_Z256_AFFINE_POINT *Q);
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void sm9_z256_point_sub_affine(SM9_Z256_POINT *R, const SM9_Z256_POINT *P, const SM9_Z256_AFFINE_POINT *Q);
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typedef struct {
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sm9_z256_fp2_t X;
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sm9_z256_fp2_t Y;
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sm9_z256_fp2_t Z;
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} SM9_Z256_TWIST_POINT;
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const SM9_Z256_TWIST_POINT *sm9_z256_twist_generator(void);
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int sm9_z256_twist_point_to_uncompressed_octets(const SM9_Z256_TWIST_POINT *P, uint8_t octets[129]);
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int sm9_z256_twist_point_from_uncompressed_octets(SM9_Z256_TWIST_POINT *P, const uint8_t octets[129]);
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int sm9_z256_twist_point_print(FILE *fp, int fmt, int ind, const char *label, const SM9_Z256_TWIST_POINT *P);
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void sm9_z256_twist_point_from_hex(SM9_Z256_TWIST_POINT *R, const char hex[259]); // 259 = 64 * 4 + 3
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int sm9_z256_twist_point_is_at_infinity(const SM9_Z256_TWIST_POINT *P);
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void sm9_z256_twist_point_set_infinity(SM9_Z256_TWIST_POINT *R);
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void sm9_z256_twist_point_get_xy(const SM9_Z256_TWIST_POINT *P, sm9_z256_fp2_t x, sm9_z256_fp2_t y);
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int sm9_z256_twist_point_equ(const SM9_Z256_TWIST_POINT *P, const SM9_Z256_TWIST_POINT *Q);
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int sm9_z256_twist_point_is_on_curve(const SM9_Z256_TWIST_POINT *P);
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void sm9_z256_twist_point_neg(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P);
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void sm9_z256_twist_point_dbl(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P);
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void sm9_z256_twist_point_add(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P, const SM9_Z256_TWIST_POINT *Q);
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void sm9_z256_twist_point_sub(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P, const SM9_Z256_TWIST_POINT *Q);
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void sm9_z256_twist_point_add_full(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P, const SM9_Z256_TWIST_POINT *Q);
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void sm9_z256_twist_point_mul(SM9_Z256_TWIST_POINT *R, const sm9_z256_t k, const SM9_Z256_TWIST_POINT *P);
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void sm9_z256_twist_point_mul_generator(SM9_Z256_TWIST_POINT *R, const sm9_z256_t k);
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|
||||
void sm9_z256_eval_g_tangent(sm9_z256_fp12_t num, sm9_z256_fp12_t den, const SM9_Z256_TWIST_POINT *P, const SM9_Z256_POINT *Q);
|
||||
void sm9_z256_eval_g_line(sm9_z256_fp12_t num, sm9_z256_fp12_t den, const SM9_Z256_TWIST_POINT *T, const SM9_Z256_TWIST_POINT *P, const SM9_Z256_POINT *Q);
|
||||
void sm9_z256_twist_point_pi1(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P);
|
||||
void sm9_z256_twist_point_pi2(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P);
|
||||
void sm9_z256_twist_point_neg_pi2(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P);
|
||||
void sm9_z256_final_exponent_hard_part(sm9_z256_fp12_t r, const sm9_z256_fp12_t f);
|
||||
void sm9_z256_final_exponent(sm9_z256_fp12_t r, const sm9_z256_fp12_t f);
|
||||
void sm9_z256_pairing(sm9_z256_fp12_t r, const SM9_Z256_TWIST_POINT *Q, const SM9_Z256_POINT *P);
|
||||
|
||||
int sm9_z256_hash1(sm9_z256_t h1, const char *id, size_t idlen, uint8_t hid);
|
||||
|
||||
@@ -431,8 +223,6 @@ int sm9_decrypt(const SM9_ENC_KEY *key, const char *id, size_t idlen,
|
||||
const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen);
|
||||
|
||||
|
||||
|
||||
|
||||
// SM9 Key Exchange (To be continued)
|
||||
#define SM9_EXCH_MASTER_KEY SM9_ENC_MASTER_KEY
|
||||
#define SM9_EXCH_KEY SM9_ENC_KEY
|
||||
|
||||
239
include/gmssl/sm9_z256.h
Normal file
239
include/gmssl/sm9_z256.h
Normal file
@@ -0,0 +1,239 @@
|
||||
/*
|
||||
* Copyright 2014-2024 The GmSSL Project. All Rights Reserved.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*/
|
||||
|
||||
#ifndef GMSSL_SM9_Z256_H
|
||||
#define GMSSL_SM9_Z256_H
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <gmssl/sm3.h>
|
||||
#include <gmssl/sm2.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
|
||||
typedef uint64_t sm9_z256_t[4];
|
||||
|
||||
void sm9_z256_set_one(sm9_z256_t r);
|
||||
void sm9_z256_set_zero(sm9_z256_t r);
|
||||
void sm9_z256_copy(sm9_z256_t r, const sm9_z256_t a);
|
||||
void sm9_z256_copy_conditional(sm9_z256_t r, const sm9_z256_t a, uint64_t move);
|
||||
int sm9_z256_cmp(const sm9_z256_t a, const sm9_z256_t b);
|
||||
uint64_t sm9_z256_is_zero(const sm9_z256_t a);
|
||||
uint64_t sm9_z256_equ(const sm9_z256_t a, const sm9_z256_t b);
|
||||
uint64_t sm9_z256_add(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
|
||||
uint64_t sm9_z256_sub(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
|
||||
void sm9_z256_mul(uint64_t r[8], const sm9_z256_t a, const sm9_z256_t b);
|
||||
void sm9_z256_from_bytes(sm9_z256_t r, const uint8_t in[32]);
|
||||
void sm9_z256_to_bytes(const sm9_z256_t a, uint8_t out[32]);
|
||||
int sm9_z256_from_hex(sm9_z256_t r, const char *hex);
|
||||
void sm9_z256_to_hex(const sm9_z256_t r, char hex[64]);
|
||||
int sm9_z256_equ_hex(const sm9_z256_t a, const char *hex);
|
||||
void sm9_z256_to_bits(const sm9_z256_t a, char bits[256]);
|
||||
int sm9_z256_rand_range(sm9_z256_t r, const sm9_z256_t range);
|
||||
void sm9_z256_print_bn(const char *prefix, const sm9_z256_t a);
|
||||
int sm9_z256_print(FILE *fp, int ind, int fmt, const char *label, const sm9_z256_t a);
|
||||
|
||||
const uint64_t *sm9_z256_prime(void);
|
||||
|
||||
void sm9_z256_modp_add(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
|
||||
void sm9_z256_modp_sub(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
|
||||
void sm9_z256_modp_dbl(sm9_z256_t r, const sm9_z256_t a);
|
||||
void sm9_z256_modp_tri(sm9_z256_t r, const sm9_z256_t a);
|
||||
void sm9_z256_modp_haf(sm9_z256_t r, const sm9_z256_t a);
|
||||
void sm9_z256_modp_neg(sm9_z256_t r, const sm9_z256_t a);
|
||||
|
||||
void sm9_z256_modp_to_mont(sm9_z256_t r, const sm9_z256_t a);
|
||||
void sm9_z256_modp_from_mont(sm9_z256_t r, const sm9_z256_t a);
|
||||
void sm9_z256_modp_mont_mul(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
|
||||
void sm9_z256_modp_mont_sqr(sm9_z256_t r, const sm9_z256_t a);
|
||||
void sm9_z256_modp_mont_pow(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t e);
|
||||
void sm9_z256_modp_mont_inv(sm9_z256_t r, const sm9_z256_t a);
|
||||
|
||||
const uint64_t *sm9_z256_order(void);
|
||||
|
||||
void sm9_z256_modn_add(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
|
||||
void sm9_z256_modn_sub(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
|
||||
void sm9_z256_modn_mul(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t b);
|
||||
void sm9_z256_modn_pow(sm9_z256_t r, const sm9_z256_t a, const sm9_z256_t e);
|
||||
void sm9_z256_modn_inv(sm9_z256_t r, const sm9_z256_t a);
|
||||
void sm9_z256_modn_from_hash(sm9_z256_t h, const uint8_t Ha[40]);
|
||||
|
||||
|
||||
typedef sm9_z256_t sm9_z256_fp2_t[2];
|
||||
|
||||
void sm9_z256_fp2_set_one(sm9_z256_fp2_t r);
|
||||
void sm9_z256_fp2_set_zero(sm9_z256_fp2_t r);
|
||||
int sm9_z256_fp2_is_one(const sm9_z256_fp2_t a);
|
||||
int sm9_z256_fp2_is_zero(const sm9_z256_fp2_t a);
|
||||
int sm9_z256_fp2_equ(const sm9_z256_fp2_t a, const sm9_z256_fp2_t b);
|
||||
void sm9_z256_fp2_copy(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
|
||||
int sm9_z256_fp2_rand(sm9_z256_fp2_t r);
|
||||
void sm9_z256_fp2_to_bytes(const sm9_z256_fp2_t a, uint8_t buf[64]);
|
||||
int sm9_z256_fp2_from_bytes(sm9_z256_fp2_t r, const uint8_t buf[64]);
|
||||
void sm9_z256_fp2_to_hex(const sm9_z256_fp2_t a, char hex[129]);
|
||||
int sm9_z256_fp2_from_hex(sm9_z256_fp2_t r, const char hex[129]);
|
||||
void sm9_z256_fp2_add(sm9_z256_fp2_t r, const sm9_z256_fp2_t a, const sm9_z256_fp2_t b);
|
||||
void sm9_z256_fp2_dbl(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
|
||||
void sm9_z256_fp2_tri(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
|
||||
void sm9_z256_fp2_sub(sm9_z256_fp2_t r, const sm9_z256_fp2_t a, const sm9_z256_fp2_t b);
|
||||
void sm9_z256_fp2_neg(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
|
||||
void sm9_z256_fp2_a_mul_u(sm9_z256_fp2_t r, sm9_z256_fp2_t a);
|
||||
void sm9_z256_fp2_mul(sm9_z256_fp2_t r, const sm9_z256_fp2_t a, const sm9_z256_fp2_t b);
|
||||
void sm9_z256_fp2_mul_u(sm9_z256_fp2_t r, const sm9_z256_fp2_t a, const sm9_z256_fp2_t b);
|
||||
void sm9_z256_fp2_mul_fp(sm9_z256_fp2_t r, const sm9_z256_fp2_t a, const sm9_z256_t k);
|
||||
void sm9_z256_fp2_sqr(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
|
||||
void sm9_z256_fp2_sqr_u(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
|
||||
void sm9_z256_fp2_inv(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
|
||||
void sm9_z256_fp2_div(sm9_z256_fp2_t r, const sm9_z256_fp2_t a, const sm9_z256_fp2_t b);
|
||||
void sm9_z256_fp2_haf(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
|
||||
void sm9_z256_fp2_conjugate(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
|
||||
void sm9_z256_fp2_frobenius(sm9_z256_fp2_t r, const sm9_z256_fp2_t a);
|
||||
|
||||
|
||||
typedef sm9_z256_fp2_t sm9_z256_fp4_t[2];
|
||||
|
||||
int sm9_z256_fp4_is_zero(const sm9_z256_fp4_t a);
|
||||
int sm9_z256_fp4_equ(const sm9_z256_fp4_t a, const sm9_z256_fp4_t b);
|
||||
int sm9_z256_fp4_rand(sm9_z256_fp4_t r);
|
||||
void sm9_z256_fp4_copy(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
|
||||
void sm9_z256_fp4_to_bytes(const sm9_z256_fp4_t a, uint8_t buf[128]);
|
||||
int sm9_z256_fp4_from_bytes(sm9_z256_fp4_t r, const uint8_t buf[128]);
|
||||
int sm9_z256_fp4_from_hex(sm9_z256_fp4_t r, const char hex[259]);
|
||||
void sm9_z256_fp4_to_hex(const sm9_z256_fp4_t a, char hex[259]);
|
||||
void sm9_z256_fp4_add(sm9_z256_fp4_t r, const sm9_z256_fp4_t a, const sm9_z256_fp4_t b);
|
||||
void sm9_z256_fp4_dbl(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
|
||||
void sm9_z256_fp4_sub(sm9_z256_fp4_t r, const sm9_z256_fp4_t a, const sm9_z256_fp4_t b);
|
||||
void sm9_z256_fp4_neg(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
|
||||
void sm9_z256_fp4_haf(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
|
||||
void sm9_z256_fp4_a_mul_v(sm9_z256_fp4_t r, sm9_z256_fp4_t a);
|
||||
void sm9_z256_fp4_mul(sm9_z256_fp4_t r, const sm9_z256_fp4_t a, const sm9_z256_fp4_t b);
|
||||
void sm9_z256_fp4_mul_fp(sm9_z256_fp4_t r, const sm9_z256_fp4_t a, const sm9_z256_t k);
|
||||
void sm9_z256_fp4_mul_fp2(sm9_z256_fp4_t r, const sm9_z256_fp4_t a, const sm9_z256_fp2_t b0);
|
||||
void sm9_z256_fp4_mul_v(sm9_z256_fp4_t r, const sm9_z256_fp4_t a, const sm9_z256_fp4_t b);
|
||||
void sm9_z256_fp4_sqr(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
|
||||
void sm9_z256_fp4_sqr_v(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
|
||||
void sm9_z256_fp4_inv(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
|
||||
void sm9_z256_fp4_frobenius(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
|
||||
void sm9_z256_fp4_conjugate(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
|
||||
void sm9_z256_fp4_frobenius2(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
|
||||
void sm9_z256_fp4_frobenius3(sm9_z256_fp4_t r, const sm9_z256_fp4_t a);
|
||||
|
||||
|
||||
typedef sm9_z256_fp4_t sm9_z256_fp12_t[3];
|
||||
|
||||
void sm9_z256_fp12_set_one(sm9_z256_fp12_t r);
|
||||
void sm9_z256_fp12_set_zero(sm9_z256_fp12_t r);
|
||||
void sm9_z256_fp12_copy(sm9_z256_fp12_t r, const sm9_z256_fp12_t a);
|
||||
int sm9_z256_fp12_rand(sm9_z256_fp12_t r);
|
||||
int sm9_z256_fp12_from_hex(sm9_z256_fp12_t r, const char hex[779]); // 779 = 64*12 + 11
|
||||
void sm9_z256_fp12_to_hex(const sm9_z256_fp12_t a, char hex[779]);
|
||||
void sm9_z256_fp12_to_bytes(const sm9_z256_fp12_t a, uint8_t buf[384]);
|
||||
int sm9_z256_fp12_from_bytes(sm9_z256_fp12_t r, const uint8_t buf[384]);
|
||||
|
||||
void sm9_z256_fp12_print(const char *prefix, const sm9_z256_fp12_t a);
|
||||
void sm9_z256_fp12_set(sm9_z256_fp12_t r, const sm9_z256_fp4_t a0, const sm9_z256_fp4_t a1, const sm9_z256_fp4_t a2);
|
||||
int sm9_z256_fp12_equ(const sm9_z256_fp12_t a, const sm9_z256_fp12_t b);
|
||||
void sm9_z256_fp12_add(sm9_z256_fp12_t r, const sm9_z256_fp12_t a, const sm9_z256_fp12_t b);
|
||||
void sm9_z256_fp12_dbl(sm9_z256_fp12_t r, const sm9_z256_fp12_t a);
|
||||
void sm9_z256_fp12_tri(sm9_z256_fp12_t r, const sm9_z256_fp12_t a);
|
||||
void sm9_z256_fp12_sub(sm9_z256_fp12_t r, const sm9_z256_fp12_t a, const sm9_z256_fp12_t b);
|
||||
void sm9_z256_fp12_neg(sm9_z256_fp12_t r, const sm9_z256_fp12_t a);
|
||||
void sm9_z256_fp12_mul(sm9_z256_fp12_t r, const sm9_z256_fp12_t a, const sm9_z256_fp12_t b);
|
||||
void sm9_z256_fp12_sqr(sm9_z256_fp12_t r, const sm9_z256_fp12_t a);
|
||||
void sm9_z256_fp12_inv(sm9_z256_fp12_t r, const sm9_z256_fp12_t a);
|
||||
void sm9_z256_fp12_pow(sm9_z256_fp12_t r, const sm9_z256_fp12_t a, const sm9_z256_t k);
|
||||
void sm9_z256_fp12_frobenius(sm9_z256_fp12_t r, const sm9_z256_fp12_t x);
|
||||
void sm9_z256_fp12_frobenius2(sm9_z256_fp12_t r, const sm9_z256_fp12_t x);
|
||||
void sm9_z256_fp12_frobenius3(sm9_z256_fp12_t r, const sm9_z256_fp12_t x);
|
||||
void sm9_z256_fp12_frobenius6(sm9_z256_fp12_t r, const sm9_z256_fp12_t x);
|
||||
|
||||
|
||||
// E(F_p): y^2 = x^3 + 5
|
||||
|
||||
typedef struct {
|
||||
sm9_z256_t X; // is mont(X)
|
||||
sm9_z256_t Y; // is mont(Y)
|
||||
sm9_z256_t Z; // is mont(Z)
|
||||
} SM9_Z256_POINT;
|
||||
|
||||
const SM9_Z256_POINT *sm9_z256_generator(void);
|
||||
|
||||
int sm9_z256_point_from_hex(SM9_Z256_POINT *R, const char hex[129]);
|
||||
int sm9_z256_point_is_at_infinity(const SM9_Z256_POINT *P);
|
||||
void sm9_z256_point_set_infinity(SM9_Z256_POINT *R);
|
||||
void sm9_z256_point_get_xy(const SM9_Z256_POINT *P, sm9_z256_t x, sm9_z256_t y);
|
||||
int sm9_z256_point_equ(const SM9_Z256_POINT *P, const SM9_Z256_POINT *Q);
|
||||
int sm9_z256_point_is_on_curve(const SM9_Z256_POINT *P);
|
||||
void sm9_z256_point_dbl(SM9_Z256_POINT *R, const SM9_Z256_POINT *P);
|
||||
void sm9_z256_point_neg(SM9_Z256_POINT *R, const SM9_Z256_POINT *P);
|
||||
void sm9_z256_point_add(SM9_Z256_POINT *R, const SM9_Z256_POINT *P, const SM9_Z256_POINT *Q);
|
||||
void sm9_z256_point_sub(SM9_Z256_POINT *R, const SM9_Z256_POINT *P, const SM9_Z256_POINT *Q);
|
||||
void sm9_z256_point_mul(SM9_Z256_POINT *R, const sm9_z256_t k, const SM9_Z256_POINT *P);
|
||||
void sm9_z256_point_mul_generator(SM9_Z256_POINT *R, const sm9_z256_t k);
|
||||
int sm9_z256_point_print(FILE *fp, int fmt, int ind, const char *label, const SM9_Z256_POINT *P);
|
||||
int sm9_z256_point_to_uncompressed_octets(const SM9_Z256_POINT *P, uint8_t octets[65]);
|
||||
int sm9_z256_point_from_uncompressed_octets(SM9_Z256_POINT *P, const uint8_t octets[65]);
|
||||
|
||||
|
||||
typedef struct {
|
||||
uint64_t X[4];
|
||||
uint64_t Y[4];
|
||||
} SM9_Z256_AFFINE_POINT;
|
||||
|
||||
void sm9_z256_point_copy_affine(SM9_Z256_POINT *R, const SM9_Z256_AFFINE_POINT *P);
|
||||
void sm9_z256_point_add_affine(SM9_Z256_POINT *R, const SM9_Z256_POINT *P, const SM9_Z256_AFFINE_POINT *Q);
|
||||
void sm9_z256_point_sub_affine(SM9_Z256_POINT *R, const SM9_Z256_POINT *P, const SM9_Z256_AFFINE_POINT *Q);
|
||||
|
||||
|
||||
typedef struct {
|
||||
sm9_z256_fp2_t X;
|
||||
sm9_z256_fp2_t Y;
|
||||
sm9_z256_fp2_t Z;
|
||||
} SM9_Z256_TWIST_POINT;
|
||||
|
||||
const SM9_Z256_TWIST_POINT *sm9_z256_twist_generator(void);
|
||||
|
||||
int sm9_z256_twist_point_to_uncompressed_octets(const SM9_Z256_TWIST_POINT *P, uint8_t octets[129]);
|
||||
int sm9_z256_twist_point_from_uncompressed_octets(SM9_Z256_TWIST_POINT *P, const uint8_t octets[129]);
|
||||
|
||||
int sm9_z256_twist_point_print(FILE *fp, int fmt, int ind, const char *label, const SM9_Z256_TWIST_POINT *P);
|
||||
void sm9_z256_twist_point_from_hex(SM9_Z256_TWIST_POINT *R, const char hex[259]); // 259 = 64 * 4 + 3
|
||||
int sm9_z256_twist_point_is_at_infinity(const SM9_Z256_TWIST_POINT *P);
|
||||
void sm9_z256_twist_point_set_infinity(SM9_Z256_TWIST_POINT *R);
|
||||
void sm9_z256_twist_point_get_xy(const SM9_Z256_TWIST_POINT *P, sm9_z256_fp2_t x, sm9_z256_fp2_t y);
|
||||
int sm9_z256_twist_point_equ(const SM9_Z256_TWIST_POINT *P, const SM9_Z256_TWIST_POINT *Q);
|
||||
int sm9_z256_twist_point_is_on_curve(const SM9_Z256_TWIST_POINT *P);
|
||||
void sm9_z256_twist_point_neg(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P);
|
||||
void sm9_z256_twist_point_dbl(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P);
|
||||
void sm9_z256_twist_point_add(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P, const SM9_Z256_TWIST_POINT *Q);
|
||||
void sm9_z256_twist_point_sub(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P, const SM9_Z256_TWIST_POINT *Q);
|
||||
void sm9_z256_twist_point_add_full(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P, const SM9_Z256_TWIST_POINT *Q);
|
||||
void sm9_z256_twist_point_mul(SM9_Z256_TWIST_POINT *R, const sm9_z256_t k, const SM9_Z256_TWIST_POINT *P);
|
||||
void sm9_z256_twist_point_mul_generator(SM9_Z256_TWIST_POINT *R, const sm9_z256_t k);
|
||||
|
||||
|
||||
void sm9_z256_eval_g_tangent(sm9_z256_fp12_t num, sm9_z256_fp12_t den, const SM9_Z256_TWIST_POINT *P, const SM9_Z256_POINT *Q);
|
||||
void sm9_z256_eval_g_line(sm9_z256_fp12_t num, sm9_z256_fp12_t den, const SM9_Z256_TWIST_POINT *T, const SM9_Z256_TWIST_POINT *P, const SM9_Z256_POINT *Q);
|
||||
void sm9_z256_twist_point_pi1(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P);
|
||||
void sm9_z256_twist_point_pi2(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P);
|
||||
void sm9_z256_twist_point_neg_pi2(SM9_Z256_TWIST_POINT *R, const SM9_Z256_TWIST_POINT *P);
|
||||
void sm9_z256_final_exponent_hard_part(sm9_z256_fp12_t r, const sm9_z256_fp12_t f);
|
||||
void sm9_z256_final_exponent(sm9_z256_fp12_t r, const sm9_z256_fp12_t f);
|
||||
void sm9_z256_pairing(sm9_z256_fp12_t r, const SM9_Z256_TWIST_POINT *Q, const SM9_Z256_POINT *P);
|
||||
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
287
src/sm9_enc.c
Normal file
287
src/sm9_enc.c
Normal file
@@ -0,0 +1,287 @@
|
||||
/*
|
||||
* Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*/
|
||||
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <gmssl/mem.h>
|
||||
#include <gmssl/sm3.h>
|
||||
#include <gmssl/sm9.h>
|
||||
#include <gmssl/asn1.h>
|
||||
#include <gmssl/error.h>
|
||||
|
||||
|
||||
int sm9_kem_encrypt(const SM9_ENC_MASTER_KEY *mpk, const char *id, size_t idlen,
|
||||
size_t klen, uint8_t *kbuf, SM9_Z256_POINT *C)
|
||||
{
|
||||
sm9_z256_t r;
|
||||
sm9_z256_fp12_t w;
|
||||
uint8_t wbuf[32 * 12];
|
||||
uint8_t cbuf[65];
|
||||
SM3_KDF_CTX kdf_ctx;
|
||||
|
||||
// A1: Q = H1(ID||hid,N) * P1 + Ppube
|
||||
sm9_z256_hash1(r, id, idlen, SM9_HID_ENC);
|
||||
sm9_z256_point_mul(C, r, sm9_z256_generator());
|
||||
sm9_z256_point_add(C, C, &mpk->Ppube);
|
||||
|
||||
do {
|
||||
// A2: rand r in [1, N-1]
|
||||
if (sm9_z256_rand_range(r, sm9_z256_order()) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
|
||||
// A3: C1 = r * Q
|
||||
sm9_z256_point_mul(C, r, C);
|
||||
sm9_z256_point_to_uncompressed_octets(C, cbuf);
|
||||
|
||||
// A4: g = e(Ppube, P2)
|
||||
sm9_z256_pairing(w, sm9_z256_twist_generator(), &mpk->Ppube);
|
||||
|
||||
// A5: w = g^r
|
||||
sm9_z256_fp12_pow(w, w, r);
|
||||
sm9_z256_fp12_to_bytes(w, wbuf);
|
||||
|
||||
// A6: K = KDF(C || w || ID_B, klen), if K == 0, goto A2
|
||||
sm3_kdf_init(&kdf_ctx, klen);
|
||||
sm3_kdf_update(&kdf_ctx, cbuf + 1, 64);
|
||||
sm3_kdf_update(&kdf_ctx, wbuf, sizeof(wbuf));
|
||||
sm3_kdf_update(&kdf_ctx, (uint8_t *)id, idlen);
|
||||
sm3_kdf_finish(&kdf_ctx, kbuf);
|
||||
|
||||
} while (mem_is_zero(kbuf, klen) == 1);
|
||||
|
||||
gmssl_secure_clear(&r, sizeof(r));
|
||||
gmssl_secure_clear(&w, sizeof(w));
|
||||
gmssl_secure_clear(wbuf, sizeof(wbuf));
|
||||
gmssl_secure_clear(&kdf_ctx, sizeof(kdf_ctx));
|
||||
|
||||
// A7: output (K, C)
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_kem_decrypt(const SM9_ENC_KEY *key, const char *id, size_t idlen, const SM9_Z256_POINT *C,
|
||||
size_t klen, uint8_t *kbuf)
|
||||
{
|
||||
sm9_z256_fp12_t w;
|
||||
uint8_t wbuf[32 * 12];
|
||||
uint8_t cbuf[65];
|
||||
SM3_KDF_CTX kdf_ctx;
|
||||
|
||||
// B1: check C in G1
|
||||
sm9_z256_point_to_uncompressed_octets(C, cbuf);
|
||||
|
||||
// B2: w = e(C, de);
|
||||
sm9_z256_pairing(w, &key->de, C);
|
||||
sm9_z256_fp12_to_bytes(w, wbuf);
|
||||
|
||||
// B3: K = KDF(C || w || ID, klen)
|
||||
sm3_kdf_init(&kdf_ctx, klen);
|
||||
sm3_kdf_update(&kdf_ctx, cbuf + 1, 64);
|
||||
sm3_kdf_update(&kdf_ctx, wbuf, sizeof(wbuf));
|
||||
sm3_kdf_update(&kdf_ctx, (uint8_t *)id, idlen);
|
||||
sm3_kdf_finish(&kdf_ctx, kbuf);
|
||||
|
||||
if (mem_is_zero(kbuf, klen)) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
|
||||
gmssl_secure_clear(&w, sizeof(w));
|
||||
gmssl_secure_clear(wbuf, sizeof(wbuf));
|
||||
gmssl_secure_clear(&kdf_ctx, sizeof(kdf_ctx));
|
||||
|
||||
// B4: output K
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_do_encrypt(const SM9_ENC_MASTER_KEY *mpk, const char *id, size_t idlen,
|
||||
const uint8_t *in, size_t inlen,
|
||||
SM9_Z256_POINT *C1, uint8_t *c2, uint8_t c3[SM3_HMAC_SIZE])
|
||||
{
|
||||
SM3_HMAC_CTX hmac_ctx;
|
||||
uint8_t K[SM9_MAX_PLAINTEXT_SIZE + 32];
|
||||
|
||||
if (sm9_kem_encrypt(mpk, id, idlen, sizeof(K), K, C1) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
gmssl_memxor(c2, K, in, inlen);
|
||||
|
||||
//sm3_hmac(K + inlen, 32, c2, inlen, c3);
|
||||
sm3_hmac_init(&hmac_ctx, K + inlen, SM3_HMAC_SIZE);
|
||||
sm3_hmac_update(&hmac_ctx, c2, inlen);
|
||||
sm3_hmac_finish(&hmac_ctx, c3);
|
||||
gmssl_secure_clear(&hmac_ctx, sizeof(hmac_ctx));
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_do_decrypt(const SM9_ENC_KEY *key, const char *id, size_t idlen,
|
||||
const SM9_Z256_POINT *C1, const uint8_t *c2, size_t c2len, const uint8_t c3[SM3_HMAC_SIZE],
|
||||
uint8_t *out)
|
||||
{
|
||||
SM3_HMAC_CTX hmac_ctx;
|
||||
uint8_t k[SM9_MAX_PLAINTEXT_SIZE + SM3_HMAC_SIZE];
|
||||
uint8_t mac[SM3_HMAC_SIZE];
|
||||
|
||||
if (c2len > SM9_MAX_PLAINTEXT_SIZE) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (sm9_kem_decrypt(key, id, idlen, C1, sizeof(k), k) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
//sm3_hmac(k + c2len, SM3_HMAC_SIZE, c2, c2len, mac);
|
||||
sm3_hmac_init(&hmac_ctx, k + c2len, SM3_HMAC_SIZE);
|
||||
sm3_hmac_update(&hmac_ctx, c2, c2len);
|
||||
sm3_hmac_finish(&hmac_ctx, mac);
|
||||
gmssl_secure_clear(&hmac_ctx, sizeof(hmac_ctx));
|
||||
|
||||
if (gmssl_secure_memcmp(c3, mac, sizeof(mac)) != 0) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
gmssl_memxor(out, k, c2, c2len);
|
||||
return 1;
|
||||
}
|
||||
|
||||
#define SM9_ENC_TYPE_XOR 0
|
||||
#define SM9_ENC_TYPE_ECB 1
|
||||
#define SM9_ENC_TYPE_CBC 2
|
||||
#define SM9_ENC_TYPE_OFB 4
|
||||
#define SM9_ENC_TYPE_CFB 8
|
||||
|
||||
/*
|
||||
SM9Cipher ::= SEQUENCE {
|
||||
EnType INTEGER, -- 0 for XOR
|
||||
C1 BIT STRING, -- uncompressed octets of ECPoint
|
||||
C3 OCTET STRING, -- 32 bytes HMAC-SM3 tag
|
||||
CipherText OCTET STRING,
|
||||
}
|
||||
*/
|
||||
int sm9_ciphertext_to_der(const SM9_Z256_POINT *C1, const uint8_t *c2, size_t c2len,
|
||||
const uint8_t c3[SM3_HMAC_SIZE], uint8_t **out, size_t *outlen)
|
||||
{
|
||||
int en_type = SM9_ENC_TYPE_XOR;
|
||||
uint8_t c1[65];
|
||||
size_t len = 0;
|
||||
|
||||
if (sm9_z256_point_to_uncompressed_octets(C1, c1) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
if (asn1_int_to_der(en_type, NULL, &len) != 1
|
||||
|| asn1_bit_octets_to_der(c1, sizeof(c1), NULL, &len) != 1
|
||||
|| asn1_octet_string_to_der(c3, SM3_HMAC_SIZE, NULL, &len) != 1
|
||||
|| asn1_octet_string_to_der(c2, c2len, NULL, &len) != 1
|
||||
|| asn1_sequence_header_to_der(len, out, outlen) != 1
|
||||
|| asn1_int_to_der(en_type, out, outlen) != 1
|
||||
|| asn1_bit_octets_to_der(c1, sizeof(c1), out, outlen) != 1
|
||||
|| asn1_octet_string_to_der(c3, SM3_HMAC_SIZE, out, outlen) != 1
|
||||
|| asn1_octet_string_to_der(c2, c2len, out, outlen) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_ciphertext_from_der(SM9_Z256_POINT *C1, const uint8_t **c2, size_t *c2len,
|
||||
const uint8_t **c3, const uint8_t **in, size_t *inlen)
|
||||
{
|
||||
int ret;
|
||||
const uint8_t *d;
|
||||
size_t dlen;
|
||||
int en_type;
|
||||
const uint8_t *c1;
|
||||
size_t c1len;
|
||||
size_t c3len;
|
||||
|
||||
if ((ret = asn1_sequence_from_der(&d, &dlen, in, inlen)) != 1) {
|
||||
if (ret < 0) error_print();
|
||||
return ret;
|
||||
}
|
||||
if (asn1_int_from_der(&en_type, &d, &dlen) != 1
|
||||
|| asn1_bit_octets_from_der(&c1, &c1len, &d, &dlen) != 1
|
||||
|| asn1_octet_string_from_der(c3, &c3len, &d, &dlen) != 1
|
||||
|| asn1_octet_string_from_der(c2, c2len, &d, &dlen) != 1
|
||||
|| asn1_length_is_zero(dlen) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
if (en_type != SM9_ENC_TYPE_XOR) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
if (c1len != 65) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
if (c3len != SM3_HMAC_SIZE) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
if (sm9_z256_point_from_uncompressed_octets(C1, c1) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_encrypt(const SM9_ENC_MASTER_KEY *mpk, const char *id, size_t idlen,
|
||||
const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen)
|
||||
{
|
||||
SM9_Z256_POINT C1;
|
||||
uint8_t c2[SM9_MAX_PLAINTEXT_SIZE];
|
||||
uint8_t c3[SM3_HMAC_SIZE];
|
||||
|
||||
if (inlen > SM9_MAX_PLAINTEXT_SIZE) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (sm9_do_encrypt(mpk, id, idlen, in, inlen, &C1, c2, c3) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
*outlen = 0;
|
||||
if (sm9_ciphertext_to_der(&C1, c2, inlen, c3, &out, outlen) != 1) { // FIXME: when out == NULL
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_decrypt(const SM9_ENC_KEY *key, const char *id, size_t idlen,
|
||||
const uint8_t *in, size_t inlen, uint8_t *out, size_t *outlen)
|
||||
{
|
||||
SM9_Z256_POINT C1;
|
||||
const uint8_t *c2;
|
||||
size_t c2len;
|
||||
const uint8_t *c3;
|
||||
|
||||
if (sm9_ciphertext_from_der(&C1, &c2, &c2len, &c3, &in, &inlen) != 1
|
||||
|| asn1_length_is_zero(inlen) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
*outlen = c2len;
|
||||
if (!out) {
|
||||
return 1;
|
||||
}
|
||||
if (sm9_do_decrypt(key, id, idlen, &C1, c2, c2len, c3, out) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
181
src/sm9_exch.c
Normal file
181
src/sm9_exch.c
Normal file
@@ -0,0 +1,181 @@
|
||||
/*
|
||||
* Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*/
|
||||
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <gmssl/mem.h>
|
||||
#include <gmssl/sm3.h>
|
||||
#include <gmssl/sm9.h>
|
||||
#include <gmssl/asn1.h>
|
||||
#include <gmssl/error.h>
|
||||
|
||||
|
||||
|
||||
int sm9_exch_step_1A(const SM9_EXCH_MASTER_KEY *mpk, const char *idB, size_t idBlen, SM9_Z256_POINT *RA, sm9_z256_t rA)
|
||||
{
|
||||
// A1: Q = H1(ID_B||hid,N) * P1 + Ppube
|
||||
sm9_z256_hash1(rA, idB, idBlen, SM9_HID_EXCH);
|
||||
sm9_z256_point_mul(RA, rA, sm9_z256_generator());
|
||||
sm9_z256_point_add(RA, RA, &mpk->Ppube);
|
||||
|
||||
// A2: rand rA in [1, N-1]
|
||||
if (sm9_z256_rand_range(rA, sm9_z256_order()) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
// Only for testing
|
||||
sm9_z256_from_hex(rA, "00005879DD1D51E175946F23B1B41E93BA31C584AE59A426EC1046A4D03B06C8");
|
||||
|
||||
// A3: RA = rA * Q
|
||||
sm9_z256_point_mul(RA, rA, RA);
|
||||
|
||||
// A4: Output RA, save rA
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_exch_step_1B(const SM9_EXCH_MASTER_KEY *mpk, const char *idA, size_t idAlen, const char *idB, size_t idBlen,
|
||||
const SM9_EXCH_KEY *key, const SM9_Z256_POINT *RA, SM9_Z256_POINT *RB, uint8_t *sk, size_t klen)
|
||||
{
|
||||
sm9_z256_t rB;
|
||||
sm9_z256_fp12_t G1, G2, G3;
|
||||
uint8_t g1[32 * 12], g2[32 * 12], g3[32 * 12];
|
||||
uint8_t ta[65], tb[65];
|
||||
SM3_KDF_CTX kdf_ctx;
|
||||
|
||||
// B1: Q = H1(ID_A||hid,N) * P1 + Ppube
|
||||
sm9_z256_hash1(rB, idA, idAlen, SM9_HID_EXCH);
|
||||
sm9_z256_point_mul(RB, rB, sm9_z256_generator());
|
||||
sm9_z256_point_add(RB, RB, &mpk->Ppube);
|
||||
|
||||
do {
|
||||
// B2: rand rB in [1, N-1]
|
||||
// FIXME: check rb != 0
|
||||
if (sm9_z256_rand_range(rB, sm9_z256_order()) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
// Only for testing
|
||||
sm9_z256_from_hex(rB, "00018B98C44BEF9F8537FB7D071B2C928B3BC65BD3D69E1EEE213564905634FE");
|
||||
|
||||
// B3: RB = rB * Q
|
||||
sm9_z256_point_mul(RB, rB, RB);
|
||||
|
||||
// B4: check RA on curve; G1 = e(RA, deB), G2 = e(Ppube, P2) ^ rB, G3 = G1 ^ rB
|
||||
if (!sm9_z256_point_is_on_curve(RA)) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
sm9_z256_pairing(G1, &key->de, RA);
|
||||
sm9_z256_pairing(G2, sm9_z256_twist_generator(), &mpk->Ppube);
|
||||
sm9_z256_fp12_pow(G2, G2, rB);
|
||||
sm9_z256_fp12_pow(G3, G1, rB);
|
||||
|
||||
sm9_z256_point_to_uncompressed_octets(RA, ta);
|
||||
sm9_z256_point_to_uncompressed_octets(RB, tb);
|
||||
sm9_z256_fp12_to_bytes(G1, g1);
|
||||
sm9_z256_fp12_to_bytes(G2, g2);
|
||||
sm9_z256_fp12_to_bytes(G3, g3);
|
||||
|
||||
// B5: sk = KDF(ID_A || ID_B || RA || RB || g1 || g2 || g3, klen)
|
||||
sm3_kdf_init(&kdf_ctx, klen);
|
||||
sm3_kdf_update(&kdf_ctx, (uint8_t *)idA, idAlen);
|
||||
sm3_kdf_update(&kdf_ctx, (uint8_t *)idB, idBlen);
|
||||
sm3_kdf_update(&kdf_ctx, ta + 1, 64);
|
||||
sm3_kdf_update(&kdf_ctx, tb + 1, 64);
|
||||
sm3_kdf_update(&kdf_ctx, g1, sizeof(g1));
|
||||
sm3_kdf_update(&kdf_ctx, g2, sizeof(g2));
|
||||
sm3_kdf_update(&kdf_ctx, g3, sizeof(g3));
|
||||
sm3_kdf_finish(&kdf_ctx, sk);
|
||||
|
||||
} while (mem_is_zero(sk, klen) == 1);
|
||||
|
||||
// B6: SB = Hash(0x82 || g1 || Hash(g2 || g3 || ID_A || ID_B || RA || RB)) [optional]
|
||||
|
||||
gmssl_secure_clear(&rB, sizeof(rB));
|
||||
gmssl_secure_clear(&G1, sizeof(G1));
|
||||
gmssl_secure_clear(&G2, sizeof(G2));
|
||||
gmssl_secure_clear(&G3, sizeof(G3));
|
||||
gmssl_secure_clear(g1, sizeof(g1));
|
||||
gmssl_secure_clear(g2, sizeof(g2));
|
||||
gmssl_secure_clear(g3, sizeof(g3));
|
||||
gmssl_secure_clear(ta, sizeof(ta));
|
||||
gmssl_secure_clear(tb, sizeof(tb));
|
||||
gmssl_secure_clear(&kdf_ctx, sizeof(kdf_ctx));
|
||||
|
||||
// B7: Output RB
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_exch_step_2A(const SM9_EXCH_MASTER_KEY *mpk, const char *idA, size_t idAlen, const char *idB, size_t idBlen,
|
||||
const SM9_EXCH_KEY *key, const sm9_z256_t rA, const SM9_Z256_POINT *RA, const SM9_Z256_POINT *RB, uint8_t *sk, size_t klen)
|
||||
{
|
||||
sm9_z256_t r;
|
||||
sm9_z256_fp12_t G1, G2, G3;
|
||||
uint8_t g1[32 * 12], g2[32 * 12], g3[32 * 12];
|
||||
uint8_t ta[65], tb[65];
|
||||
SM3_KDF_CTX kdf_ctx;
|
||||
|
||||
do {
|
||||
// A5: check RB on curve; G1 = e(Ppube, P2) ^ rA, G2 = e(RB, deA), G3 = G2 ^ rA
|
||||
if (!sm9_z256_point_is_on_curve(RB)) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
sm9_z256_pairing(G1, sm9_z256_twist_generator(), &mpk->Ppube);
|
||||
sm9_z256_fp12_pow(G1, G1, rA);
|
||||
sm9_z256_pairing(G2, &key->de, RB);
|
||||
sm9_z256_fp12_pow(G3, G2, rA);
|
||||
|
||||
sm9_z256_point_to_uncompressed_octets(RA, ta);
|
||||
sm9_z256_point_to_uncompressed_octets(RB, tb);
|
||||
sm9_z256_fp12_to_bytes(G1, g1);
|
||||
sm9_z256_fp12_to_bytes(G2, g2);
|
||||
sm9_z256_fp12_to_bytes(G3, g3);
|
||||
|
||||
// A6: S1 = Hash(0x82 || g1 || Hash(g2 || g3 || ID_A || ID_B || RA || RB)), check S1 = SB [optional]
|
||||
|
||||
// A7: sk = KDF(ID_A || ID_B || RA || RB || g1 || g2 || g3, klen)
|
||||
sm3_kdf_init(&kdf_ctx, klen);
|
||||
sm3_kdf_update(&kdf_ctx, (uint8_t *)idA, idAlen);
|
||||
sm3_kdf_update(&kdf_ctx, (uint8_t *)idB, idBlen);
|
||||
sm3_kdf_update(&kdf_ctx, ta + 1, 64);
|
||||
sm3_kdf_update(&kdf_ctx, tb + 1, 64);
|
||||
sm3_kdf_update(&kdf_ctx, g1, sizeof(g1));
|
||||
sm3_kdf_update(&kdf_ctx, g2, sizeof(g2));
|
||||
sm3_kdf_update(&kdf_ctx, g3, sizeof(g3));
|
||||
sm3_kdf_finish(&kdf_ctx, sk);
|
||||
|
||||
} while (mem_is_zero(sk, klen) == 1);
|
||||
|
||||
// A8: SA = Hash(0x83 || g1 || Hash(g2 || g3 || ID_A || ID_B || RA || RB)) [optional]
|
||||
|
||||
gmssl_secure_clear(&r, sizeof(r));
|
||||
gmssl_secure_clear(&G1, sizeof(G1));
|
||||
gmssl_secure_clear(&G2, sizeof(G2));
|
||||
gmssl_secure_clear(&G3, sizeof(G3));
|
||||
gmssl_secure_clear(g1, sizeof(g1));
|
||||
gmssl_secure_clear(g2, sizeof(g2));
|
||||
gmssl_secure_clear(g3, sizeof(g3));
|
||||
gmssl_secure_clear(ta, sizeof(ta));
|
||||
gmssl_secure_clear(tb, sizeof(tb));
|
||||
gmssl_secure_clear(&kdf_ctx, sizeof(kdf_ctx));
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_exch_step_2B()
|
||||
{
|
||||
// B8: S2 = Hash(0x83 || g1 || Hash(g2 || g3 || ID_A || ID_B || RA || RB)), check S2 = SA [optional]
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
249
src/sm9_sign.c
Normal file
249
src/sm9_sign.c
Normal file
@@ -0,0 +1,249 @@
|
||||
/*
|
||||
* Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the License); you may
|
||||
* not use this file except in compliance with the License.
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*/
|
||||
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <gmssl/mem.h>
|
||||
#include <gmssl/sm3.h>
|
||||
#include <gmssl/sm9.h>
|
||||
#include <gmssl/asn1.h>
|
||||
#include <gmssl/error.h>
|
||||
|
||||
|
||||
int sm9_signature_to_der(const SM9_SIGNATURE *sig, uint8_t **out, size_t *outlen)
|
||||
{
|
||||
uint8_t hbuf[32];
|
||||
uint8_t Sbuf[65];
|
||||
size_t len = 0;
|
||||
|
||||
sm9_z256_to_bytes(sig->h, hbuf);
|
||||
sm9_z256_point_to_uncompressed_octets(&sig->S, Sbuf);
|
||||
|
||||
if (asn1_octet_string_to_der(hbuf, sizeof(hbuf), NULL, &len) != 1
|
||||
|| asn1_bit_octets_to_der(Sbuf, sizeof(Sbuf), NULL, &len) != 1
|
||||
|| asn1_sequence_header_to_der(len, out, outlen) != 1
|
||||
|| asn1_octet_string_to_der(hbuf, sizeof(hbuf), out, outlen) != 1
|
||||
|| asn1_bit_octets_to_der(Sbuf, sizeof(Sbuf), out, outlen) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_signature_from_der(SM9_SIGNATURE *sig, const uint8_t **in, size_t *inlen)
|
||||
{
|
||||
int ret;
|
||||
const uint8_t *d;
|
||||
size_t dlen;
|
||||
const uint8_t *h;
|
||||
size_t hlen;
|
||||
const uint8_t *S;
|
||||
size_t Slen;
|
||||
|
||||
if ((ret = asn1_sequence_from_der(&d, &dlen, in, inlen)) != 1) {
|
||||
if (ret < 0) error_print();
|
||||
return ret;
|
||||
}
|
||||
if (asn1_octet_string_from_der(&h, &hlen, &d, &dlen) != 1
|
||||
|| asn1_bit_octets_from_der(&S, &Slen, &d, &dlen) != 1
|
||||
|| asn1_check(hlen == 32) != 1
|
||||
|| asn1_check(Slen == 65) != 1
|
||||
|| asn1_length_is_zero(dlen) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
|
||||
sm9_z256_from_bytes(sig->h, h);
|
||||
if (sm9_z256_cmp(sig->h, sm9_z256_order()) >= 0) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (sm9_z256_point_from_uncompressed_octets(&sig->S, S) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_sign_init(SM9_SIGN_CTX *ctx)
|
||||
{
|
||||
const uint8_t prefix[1] = { SM9_HASH2_PREFIX };
|
||||
sm3_init(&ctx->sm3_ctx);
|
||||
sm3_update(&ctx->sm3_ctx, prefix, sizeof(prefix));
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_sign_update(SM9_SIGN_CTX *ctx, const uint8_t *data, size_t datalen)
|
||||
{
|
||||
sm3_update(&ctx->sm3_ctx, data, datalen);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_sign_finish(SM9_SIGN_CTX *ctx, const SM9_SIGN_KEY *key, uint8_t *sig, size_t *siglen)
|
||||
{
|
||||
SM9_SIGNATURE signature;
|
||||
|
||||
if (sm9_do_sign(key, &ctx->sm3_ctx, &signature) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
*siglen = 0;
|
||||
if (sm9_signature_to_der(&signature, &sig, siglen) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_do_sign(const SM9_SIGN_KEY *key, const SM3_CTX *sm3_ctx, SM9_SIGNATURE *sig)
|
||||
{
|
||||
sm9_z256_t r;
|
||||
sm9_z256_fp12_t g;
|
||||
uint8_t wbuf[32 * 12];
|
||||
SM3_CTX ctx = *sm3_ctx;
|
||||
SM3_CTX tmp_ctx;
|
||||
uint8_t ct1[4] = {0,0,0,1};
|
||||
uint8_t ct2[4] = {0,0,0,2};
|
||||
uint8_t Ha[64];
|
||||
|
||||
// A1: g = e(P1, Ppubs)
|
||||
sm9_z256_pairing(g, &key->Ppubs, sm9_z256_generator());
|
||||
|
||||
do {
|
||||
// A2: rand r in [1, N-1]
|
||||
if (sm9_z256_rand_range(r, sm9_z256_order()) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
|
||||
// Only for testing
|
||||
//sm9_z256_from_hex(r, "00033C8616B06704813203DFD00965022ED15975C662337AED648835DC4B1CBE");
|
||||
|
||||
// A3: w = g^r
|
||||
sm9_z256_fp12_pow(g, g, r);
|
||||
sm9_z256_fp12_to_bytes(g, wbuf);
|
||||
|
||||
// A4: h = H2(M || w, N)
|
||||
sm3_update(&ctx, wbuf, sizeof(wbuf));
|
||||
tmp_ctx = ctx;
|
||||
sm3_update(&ctx, ct1, sizeof(ct1));
|
||||
sm3_finish(&ctx, Ha);
|
||||
sm3_update(&tmp_ctx, ct2, sizeof(ct2));
|
||||
sm3_finish(&tmp_ctx, Ha + 32);
|
||||
sm9_z256_modn_from_hash(sig->h, Ha);
|
||||
|
||||
// A5: l = (r - h) mod N, if l = 0, goto A2
|
||||
sm9_z256_modn_sub(r, r, sig->h);
|
||||
|
||||
} while (sm9_z256_is_zero(r));
|
||||
|
||||
// A6: S = l * dsA
|
||||
sm9_z256_point_mul(&sig->S, r, &key->ds);
|
||||
|
||||
gmssl_secure_clear(&r, sizeof(r));
|
||||
gmssl_secure_clear(&g, sizeof(g));
|
||||
gmssl_secure_clear(wbuf, sizeof(wbuf));
|
||||
gmssl_secure_clear(&tmp_ctx, sizeof(tmp_ctx));
|
||||
gmssl_secure_clear(Ha, sizeof(Ha));
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_verify_init(SM9_SIGN_CTX *ctx)
|
||||
{
|
||||
const uint8_t prefix[1] = { SM9_HASH2_PREFIX };
|
||||
sm3_init(&ctx->sm3_ctx);
|
||||
sm3_update(&ctx->sm3_ctx, prefix, sizeof(prefix));
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_verify_update(SM9_SIGN_CTX *ctx, const uint8_t *data, size_t datalen)
|
||||
{
|
||||
sm3_update(&ctx->sm3_ctx, data, datalen);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int sm9_verify_finish(SM9_SIGN_CTX *ctx, const uint8_t *sig, size_t siglen,
|
||||
const SM9_SIGN_MASTER_KEY *mpk, const char *id, size_t idlen)
|
||||
{
|
||||
int ret;
|
||||
SM9_SIGNATURE signature;
|
||||
|
||||
if (sm9_signature_from_der(&signature, &sig, &siglen) != 1
|
||||
|| asn1_length_is_zero(siglen) != 1) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
|
||||
if ((ret = sm9_do_verify(mpk, id, idlen, &ctx->sm3_ctx, &signature)) < 0) {
|
||||
error_print();
|
||||
return -1;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
int sm9_do_verify(const SM9_SIGN_MASTER_KEY *mpk, const char *id, size_t idlen,
|
||||
const SM3_CTX *sm3_ctx, const SM9_SIGNATURE *sig)
|
||||
{
|
||||
sm9_z256_t h1;
|
||||
sm9_z256_t h2;
|
||||
sm9_z256_fp12_t g;
|
||||
sm9_z256_fp12_t t;
|
||||
sm9_z256_fp12_t u;
|
||||
sm9_z256_fp12_t w;
|
||||
SM9_Z256_TWIST_POINT P;
|
||||
uint8_t wbuf[32 * 12];
|
||||
SM3_CTX ctx = *sm3_ctx;
|
||||
SM3_CTX tmp_ctx;
|
||||
uint8_t ct1[4] = {0,0,0,1};
|
||||
uint8_t ct2[4] = {0,0,0,2};
|
||||
uint8_t Ha[64];
|
||||
|
||||
// B1: check h in [1, N-1]
|
||||
|
||||
// B2: check S in G1
|
||||
|
||||
// B3: g = e(P1, Ppubs)
|
||||
sm9_z256_pairing(g, &mpk->Ppubs, sm9_z256_generator());
|
||||
|
||||
// B4: t = g^h
|
||||
sm9_z256_fp12_pow(t, g, sig->h);
|
||||
|
||||
// B5: h1 = H1(ID || hid, N)
|
||||
sm9_z256_hash1(h1, id, idlen, SM9_HID_SIGN);
|
||||
|
||||
// B6: P = h1 * P2 + Ppubs
|
||||
sm9_z256_twist_point_mul_generator(&P, h1);
|
||||
sm9_z256_twist_point_add_full(&P, &P, &mpk->Ppubs);
|
||||
|
||||
// B7: u = e(S, P)
|
||||
sm9_z256_pairing(u, &P, &sig->S);
|
||||
|
||||
// B8: w = u * t
|
||||
sm9_z256_fp12_mul(w, u, t);
|
||||
sm9_z256_fp12_to_bytes(w, wbuf);
|
||||
|
||||
// B9: h2 = H2(M || w, N), check h2 == h
|
||||
sm3_update(&ctx, wbuf, sizeof(wbuf));
|
||||
tmp_ctx = ctx;
|
||||
sm3_update(&ctx, ct1, sizeof(ct1));
|
||||
sm3_finish(&ctx, Ha);
|
||||
sm3_update(&tmp_ctx, ct2, sizeof(ct2));
|
||||
sm3_finish(&tmp_ctx, Ha + 32);
|
||||
sm9_z256_modn_from_hash(h2, Ha);
|
||||
if (sm9_z256_equ(h2, sig->h) != 1) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
@@ -15,7 +15,7 @@
|
||||
#include <assert.h>
|
||||
#include <gmssl/hex.h>
|
||||
#include <gmssl/mem.h>
|
||||
#include <gmssl/sm9.h>
|
||||
#include <gmssl/sm9_z256.h>
|
||||
#include <gmssl/error.h>
|
||||
#include <gmssl/endian.h>
|
||||
#include <gmssl/rand.h>
|
||||
|
||||
Reference in New Issue
Block a user