| /* |
| * Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| /* |
| * Low level APIs are deprecated for public use, but still ok for internal use. |
| */ |
| #include "internal/deprecated.h" |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include <openssl/bio.h> |
| #include <openssl/evp.h> |
| #include <openssl/bn.h> |
| #include <openssl/crypto.h> |
| #include <openssl/err.h> |
| #include <openssl/rand.h> |
| #include "testutil.h" |
| |
| #ifndef OPENSSL_NO_SM2 |
| |
| # include "crypto/sm2.h" |
| |
| static fake_random_generate_cb get_faked_bytes; |
| |
| static OSSL_PROVIDER *fake_rand = NULL; |
| static uint8_t *fake_rand_bytes = NULL; |
| static size_t fake_rand_bytes_offset = 0; |
| static size_t fake_rand_size = 0; |
| |
| static int get_faked_bytes(unsigned char *buf, size_t num, |
| ossl_unused const char *name, |
| ossl_unused EVP_RAND_CTX *ctx) |
| { |
| if (!TEST_ptr(fake_rand_bytes) || !TEST_size_t_gt(fake_rand_size, 0)) |
| return 0; |
| |
| while (num-- > 0) { |
| if (fake_rand_bytes_offset >= fake_rand_size) |
| fake_rand_bytes_offset = 0; |
| *buf++ = fake_rand_bytes[fake_rand_bytes_offset++]; |
| } |
| |
| return 1; |
| } |
| |
| static int start_fake_rand(const char *hex_bytes) |
| { |
| OPENSSL_free(fake_rand_bytes); |
| fake_rand_bytes_offset = 0; |
| fake_rand_size = strlen(hex_bytes) / 2; |
| if (!TEST_ptr(fake_rand_bytes = OPENSSL_hexstr2buf(hex_bytes, NULL))) |
| return 0; |
| |
| /* use own random function */ |
| fake_rand_set_public_private_callbacks(NULL, get_faked_bytes); |
| return 1; |
| |
| } |
| |
| static void restore_rand(void) |
| { |
| fake_rand_set_public_private_callbacks(NULL, NULL); |
| OPENSSL_free(fake_rand_bytes); |
| fake_rand_bytes = NULL; |
| fake_rand_bytes_offset = 0; |
| } |
| |
| static EC_GROUP *create_EC_group(const char *p_hex, const char *a_hex, |
| const char *b_hex, const char *x_hex, |
| const char *y_hex, const char *order_hex, |
| const char *cof_hex) |
| { |
| BIGNUM *p = NULL; |
| BIGNUM *a = NULL; |
| BIGNUM *b = NULL; |
| BIGNUM *g_x = NULL; |
| BIGNUM *g_y = NULL; |
| BIGNUM *order = NULL; |
| BIGNUM *cof = NULL; |
| EC_POINT *generator = NULL; |
| EC_GROUP *group = NULL; |
| int ok = 0; |
| |
| if (!TEST_true(BN_hex2bn(&p, p_hex)) |
| || !TEST_true(BN_hex2bn(&a, a_hex)) |
| || !TEST_true(BN_hex2bn(&b, b_hex))) |
| goto done; |
| |
| group = EC_GROUP_new_curve_GFp(p, a, b, NULL); |
| if (!TEST_ptr(group)) |
| goto done; |
| |
| generator = EC_POINT_new(group); |
| if (!TEST_ptr(generator)) |
| goto done; |
| |
| if (!TEST_true(BN_hex2bn(&g_x, x_hex)) |
| || !TEST_true(BN_hex2bn(&g_y, y_hex)) |
| || !TEST_true(EC_POINT_set_affine_coordinates(group, generator, g_x, |
| g_y, NULL))) |
| goto done; |
| |
| if (!TEST_true(BN_hex2bn(&order, order_hex)) |
| || !TEST_true(BN_hex2bn(&cof, cof_hex)) |
| || !TEST_true(EC_GROUP_set_generator(group, generator, order, cof))) |
| goto done; |
| |
| ok = 1; |
| done: |
| BN_free(p); |
| BN_free(a); |
| BN_free(b); |
| BN_free(g_x); |
| BN_free(g_y); |
| EC_POINT_free(generator); |
| BN_free(order); |
| BN_free(cof); |
| if (!ok) { |
| EC_GROUP_free(group); |
| group = NULL; |
| } |
| |
| return group; |
| } |
| |
| static int test_sm2_crypt(const EC_GROUP *group, |
| const EVP_MD *digest, |
| const char *privkey_hex, |
| const char *message, |
| const char *k_hex, const char *ctext_hex) |
| { |
| const size_t msg_len = strlen(message); |
| BIGNUM *priv = NULL; |
| EC_KEY *key = NULL; |
| EC_POINT *pt = NULL; |
| unsigned char *expected = OPENSSL_hexstr2buf(ctext_hex, NULL); |
| size_t ctext_len = 0; |
| size_t ptext_len = 0; |
| uint8_t *ctext = NULL; |
| uint8_t *recovered = NULL; |
| size_t recovered_len = msg_len; |
| int rc = 0; |
| |
| if (!TEST_ptr(expected) |
| || !TEST_true(BN_hex2bn(&priv, privkey_hex))) |
| goto done; |
| |
| key = EC_KEY_new(); |
| if (!TEST_ptr(key) |
| || !TEST_true(EC_KEY_set_group(key, group)) |
| || !TEST_true(EC_KEY_set_private_key(key, priv))) |
| goto done; |
| |
| pt = EC_POINT_new(group); |
| if (!TEST_ptr(pt) |
| || !TEST_true(EC_POINT_mul(group, pt, priv, NULL, NULL, NULL)) |
| || !TEST_true(EC_KEY_set_public_key(key, pt)) |
| || !TEST_true(ossl_sm2_ciphertext_size(key, digest, msg_len, |
| &ctext_len))) |
| goto done; |
| |
| ctext = OPENSSL_zalloc(ctext_len); |
| if (!TEST_ptr(ctext)) |
| goto done; |
| |
| start_fake_rand(k_hex); |
| if (!TEST_true(ossl_sm2_encrypt(key, digest, |
| (const uint8_t *)message, msg_len, |
| ctext, &ctext_len))) { |
| restore_rand(); |
| goto done; |
| } |
| restore_rand(); |
| |
| if (!TEST_mem_eq(ctext, ctext_len, expected, ctext_len)) |
| goto done; |
| |
| if (!TEST_true(ossl_sm2_plaintext_size(ctext, ctext_len, &ptext_len)) |
| || !TEST_int_eq(ptext_len, msg_len)) |
| goto done; |
| |
| recovered = OPENSSL_zalloc(ptext_len); |
| if (!TEST_ptr(recovered) |
| || !TEST_true(ossl_sm2_decrypt(key, digest, ctext, ctext_len, |
| recovered, &recovered_len)) |
| || !TEST_int_eq(recovered_len, msg_len) |
| || !TEST_mem_eq(recovered, recovered_len, message, msg_len)) |
| goto done; |
| |
| rc = 1; |
| done: |
| BN_free(priv); |
| EC_POINT_free(pt); |
| OPENSSL_free(ctext); |
| OPENSSL_free(recovered); |
| OPENSSL_free(expected); |
| EC_KEY_free(key); |
| return rc; |
| } |
| |
| static int sm2_crypt_test(void) |
| { |
| int testresult = 0; |
| EC_GROUP *gm_group = NULL; |
| EC_GROUP *test_group = |
| create_EC_group |
| ("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3", |
| "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498", |
| "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A", |
| "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D", |
| "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2", |
| "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7", |
| "1"); |
| |
| if (!TEST_ptr(test_group)) |
| goto done; |
| |
| if (!test_sm2_crypt( |
| test_group, |
| EVP_sm3(), |
| "1649AB77A00637BD5E2EFE283FBF353534AA7F7CB89463F208DDBC2920BB0DA0", |
| "encryption standard", |
| "004C62EEFD6ECFC2B95B92FD6C3D9575148AFA17425546D49018E5388D49DD7B4F" |
| "0092e8ff62146873c258557548500ab2df2a365e0609ab67640a1f6d57d7b17820" |
| "008349312695a3e1d2f46905f39a766487f2432e95d6be0cb009fe8c69fd8825a7", |
| "307B0220245C26FB68B1DDDDB12C4B6BF9F2B6D5FE60A383B0D18D1C4144ABF1" |
| "7F6252E7022076CB9264C2A7E88E52B19903FDC47378F605E36811F5C07423A2" |
| "4B84400F01B804209C3D7360C30156FAB7C80A0276712DA9D8094A634B766D3A" |
| "285E07480653426D0413650053A89B41C418B0C3AAD00D886C00286467")) |
| goto done; |
| |
| /* Same test as above except using SHA-256 instead of SM3 */ |
| if (!test_sm2_crypt( |
| test_group, |
| EVP_sha256(), |
| "1649AB77A00637BD5E2EFE283FBF353534AA7F7CB89463F208DDBC2920BB0DA0", |
| "encryption standard", |
| "004C62EEFD6ECFC2B95B92FD6C3D9575148AFA17425546D49018E5388D49DD7B4F" |
| "003da18008784352192d70f22c26c243174a447ba272fec64163dd4742bae8bc98" |
| "00df17605cf304e9dd1dfeb90c015e93b393a6f046792f790a6fa4228af67d9588", |
| "307B0220245C26FB68B1DDDDB12C4B6BF9F2B6D5FE60A383B0D18D1C4144ABF17F" |
| "6252E7022076CB9264C2A7E88E52B19903FDC47378F605E36811F5C07423A24B84" |
| "400F01B80420BE89139D07853100EFA763F60CBE30099EA3DF7F8F364F9D10A5E9" |
| "88E3C5AAFC0413229E6C9AEE2BB92CAD649FE2C035689785DA33")) |
| goto done; |
| |
| /* From Annex C in both GM/T0003.5-2012 and GB/T 32918.5-2016.*/ |
| gm_group = create_EC_group( |
| "fffffffeffffffffffffffffffffffffffffffff00000000ffffffffffffffff", |
| "fffffffeffffffffffffffffffffffffffffffff00000000fffffffffffffffc", |
| "28e9fa9e9d9f5e344d5a9e4bcf6509a7f39789f515ab8f92ddbcbd414d940e93", |
| "32c4ae2c1f1981195f9904466a39c9948fe30bbff2660be1715a4589334c74c7", |
| "bc3736a2f4f6779c59bdcee36b692153d0a9877cc62a474002df32e52139f0a0", |
| "fffffffeffffffffffffffffffffffff7203df6b21c6052b53bbf40939d54123", |
| "1"); |
| |
| if (!TEST_ptr(gm_group)) |
| goto done; |
| |
| if (!test_sm2_crypt( |
| gm_group, |
| EVP_sm3(), |
| /* privkey (from which the encrypting public key is derived) */ |
| "3945208F7B2144B13F36E38AC6D39F95889393692860B51A42FB81EF4DF7C5B8", |
| /* plaintext message */ |
| "encryption standard", |
| /* ephemeral nonce k */ |
| "59276E27D506861A16680F3AD9C02DCCEF3CC1FA3CDBE4CE6D54B80DEAC1BC21", |
| /* |
| * expected ciphertext, the field values are from GM/T 0003.5-2012 |
| * (Annex C), but serialized following the ASN.1 format specified |
| * in GM/T 0009-2012 (Sec. 7.2). |
| */ |
| "307C" /* SEQUENCE, 0x7c bytes */ |
| "0220" /* INTEGER, 0x20 bytes */ |
| "04EBFC718E8D1798620432268E77FEB6415E2EDE0E073C0F4F640ECD2E149A73" |
| "0221" /* INTEGER, 0x21 bytes */ |
| "00" /* leading 00 due to DER for pos. int with topmost bit set */ |
| "E858F9D81E5430A57B36DAAB8F950A3C64E6EE6A63094D99283AFF767E124DF0" |
| "0420" /* OCTET STRING, 0x20 bytes */ |
| "59983C18F809E262923C53AEC295D30383B54E39D609D160AFCB1908D0BD8766" |
| "0413" /* OCTET STRING, 0x13 bytes */ |
| "21886CA989CA9C7D58087307CA93092D651EFA")) |
| goto done; |
| |
| testresult = 1; |
| done: |
| EC_GROUP_free(test_group); |
| EC_GROUP_free(gm_group); |
| |
| return testresult; |
| } |
| |
| static int test_sm2_sign(const EC_GROUP *group, |
| const char *userid, |
| const char *privkey_hex, |
| const char *message, |
| const char *k_hex, |
| const char *r_hex, |
| const char *s_hex) |
| { |
| const size_t msg_len = strlen(message); |
| int ok = 0; |
| BIGNUM *priv = NULL; |
| EC_POINT *pt = NULL; |
| EC_KEY *key = NULL; |
| ECDSA_SIG *sig = NULL; |
| const BIGNUM *sig_r = NULL; |
| const BIGNUM *sig_s = NULL; |
| BIGNUM *r = NULL; |
| BIGNUM *s = NULL; |
| |
| if (!TEST_true(BN_hex2bn(&priv, privkey_hex))) |
| goto done; |
| |
| key = EC_KEY_new(); |
| if (!TEST_ptr(key) |
| || !TEST_true(EC_KEY_set_group(key, group)) |
| || !TEST_true(EC_KEY_set_private_key(key, priv))) |
| goto done; |
| |
| pt = EC_POINT_new(group); |
| if (!TEST_ptr(pt) |
| || !TEST_true(EC_POINT_mul(group, pt, priv, NULL, NULL, NULL)) |
| || !TEST_true(EC_KEY_set_public_key(key, pt))) |
| goto done; |
| |
| start_fake_rand(k_hex); |
| sig = ossl_sm2_do_sign(key, EVP_sm3(), (const uint8_t *)userid, |
| strlen(userid), (const uint8_t *)message, msg_len); |
| if (!TEST_ptr(sig)) { |
| restore_rand(); |
| goto done; |
| } |
| restore_rand(); |
| |
| ECDSA_SIG_get0(sig, &sig_r, &sig_s); |
| |
| if (!TEST_true(BN_hex2bn(&r, r_hex)) |
| || !TEST_true(BN_hex2bn(&s, s_hex)) |
| || !TEST_BN_eq(r, sig_r) |
| || !TEST_BN_eq(s, sig_s)) |
| goto done; |
| |
| ok = ossl_sm2_do_verify(key, EVP_sm3(), sig, (const uint8_t *)userid, |
| strlen(userid), (const uint8_t *)message, msg_len); |
| |
| /* We goto done whether this passes or fails */ |
| TEST_true(ok); |
| |
| done: |
| ECDSA_SIG_free(sig); |
| EC_POINT_free(pt); |
| EC_KEY_free(key); |
| BN_free(priv); |
| BN_free(r); |
| BN_free(s); |
| |
| return ok; |
| } |
| |
| static int sm2_sig_test(void) |
| { |
| int testresult = 0; |
| EC_GROUP *gm_group = NULL; |
| /* From draft-shen-sm2-ecdsa-02 */ |
| EC_GROUP *test_group = |
| create_EC_group |
| ("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3", |
| "787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498", |
| "63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A", |
| "421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D", |
| "0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2", |
| "8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7", |
| "1"); |
| |
| if (!TEST_ptr(test_group)) |
| goto done; |
| |
| if (!TEST_true(test_sm2_sign( |
| test_group, |
| "ALICE123@YAHOO.COM", |
| "128B2FA8BD433C6C068C8D803DFF79792A519A55171B1B650C23661D15897263", |
| "message digest", |
| "006CB28D99385C175C94F94E934817663FC176D925DD72B727260DBAAE1FB2F96F" |
| "007c47811054c6f99613a578eb8453706ccb96384fe7df5c171671e760bfa8be3a", |
| "40F1EC59F793D9F49E09DCEF49130D4194F79FB1EED2CAA55BACDB49C4E755D1", |
| "6FC6DAC32C5D5CF10C77DFB20F7C2EB667A457872FB09EC56327A67EC7DEEBE7"))) |
| goto done; |
| |
| /* From Annex A in both GM/T0003.5-2012 and GB/T 32918.5-2016.*/ |
| gm_group = create_EC_group( |
| "fffffffeffffffffffffffffffffffffffffffff00000000ffffffffffffffff", |
| "fffffffeffffffffffffffffffffffffffffffff00000000fffffffffffffffc", |
| "28e9fa9e9d9f5e344d5a9e4bcf6509a7f39789f515ab8f92ddbcbd414d940e93", |
| "32c4ae2c1f1981195f9904466a39c9948fe30bbff2660be1715a4589334c74c7", |
| "bc3736a2f4f6779c59bdcee36b692153d0a9877cc62a474002df32e52139f0a0", |
| "fffffffeffffffffffffffffffffffff7203df6b21c6052b53bbf40939d54123", |
| "1"); |
| |
| if (!TEST_ptr(gm_group)) |
| goto done; |
| |
| if (!TEST_true(test_sm2_sign( |
| gm_group, |
| /* the default ID specified in GM/T 0009-2012 (Sec. 10).*/ |
| SM2_DEFAULT_USERID, |
| /* privkey */ |
| "3945208F7B2144B13F36E38AC6D39F95889393692860B51A42FB81EF4DF7C5B8", |
| /* plaintext message */ |
| "message digest", |
| /* ephemeral nonce k */ |
| "59276E27D506861A16680F3AD9C02DCCEF3CC1FA3CDBE4CE6D54B80DEAC1BC21", |
| /* expected signature, the field values are from GM/T 0003.5-2012, |
| Annex A. */ |
| /* signature R, 0x20 bytes */ |
| "F5A03B0648D2C4630EEAC513E1BB81A15944DA3827D5B74143AC7EACEEE720B3", |
| /* signature S, 0x20 bytes */ |
| "B1B6AA29DF212FD8763182BC0D421CA1BB9038FD1F7F42D4840B69C485BBC1AA"))) |
| goto done; |
| |
| testresult = 1; |
| |
| done: |
| EC_GROUP_free(test_group); |
| EC_GROUP_free(gm_group); |
| |
| return testresult; |
| } |
| |
| #endif |
| |
| int setup_tests(void) |
| { |
| #ifdef OPENSSL_NO_SM2 |
| TEST_note("SM2 is disabled."); |
| #else |
| fake_rand = fake_rand_start(NULL); |
| if (fake_rand == NULL) |
| return 0; |
| |
| ADD_TEST(sm2_crypt_test); |
| ADD_TEST(sm2_sig_test); |
| #endif |
| return 1; |
| } |
| |
| void cleanup_tests(void) |
| { |
| #ifndef OPENSSL_NO_SM2 |
| fake_rand_finish(fake_rand); |
| #endif |
| } |
