1 /* $OpenBSD: ec_asn1_test.c,v 1.2 2021/12/04 17:03:43 tb Exp $ */ 2 /* 3 * Copyright (c) 2017, 2021 Joel Sing <jsing@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <err.h> 19 #include <string.h> 20 21 #include <openssl/bio.h> 22 #include <openssl/ec.h> 23 #include <openssl/objects.h> 24 25 const uint8_t ec_secp256r1_pkparameters_named_curve[] = { 26 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x03, 27 0x01, 0x07, 28 }; 29 30 const uint8_t ec_secp256r1_pkparameters_parameters[] = { 31 0x30, 0x81, 0xf7, 0x02, 0x01, 0x01, 0x30, 0x2c, 32 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x01, 33 0x01, 0x02, 0x21, 0x00, 0xff, 0xff, 0xff, 0xff, 34 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 35 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 36 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 37 0xff, 0xff, 0xff, 0xff, 0x30, 0x5b, 0x04, 0x20, 38 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01, 39 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 40 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 41 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 42 0x04, 0x20, 0x5a, 0xc6, 0x35, 0xd8, 0xaa, 0x3a, 43 0x93, 0xe7, 0xb3, 0xeb, 0xbd, 0x55, 0x76, 0x98, 44 0x86, 0xbc, 0x65, 0x1d, 0x06, 0xb0, 0xcc, 0x53, 45 0xb0, 0xf6, 0x3b, 0xce, 0x3c, 0x3e, 0x27, 0xd2, 46 0x60, 0x4b, 0x03, 0x15, 0x00, 0xc4, 0x9d, 0x36, 47 0x08, 0x86, 0xe7, 0x04, 0x93, 0x6a, 0x66, 0x78, 48 0xe1, 0x13, 0x9d, 0x26, 0xb7, 0x81, 0x9f, 0x7e, 49 0x90, 0x04, 0x41, 0x04, 0x6b, 0x17, 0xd1, 0xf2, 50 0xe1, 0x2c, 0x42, 0x47, 0xf8, 0xbc, 0xe6, 0xe5, 51 0x63, 0xa4, 0x40, 0xf2, 0x77, 0x03, 0x7d, 0x81, 52 0x2d, 0xeb, 0x33, 0xa0, 0xf4, 0xa1, 0x39, 0x45, 53 0xd8, 0x98, 0xc2, 0x96, 0x4f, 0xe3, 0x42, 0xe2, 54 0xfe, 0x1a, 0x7f, 0x9b, 0x8e, 0xe7, 0xeb, 0x4a, 55 0x7c, 0x0f, 0x9e, 0x16, 0x2b, 0xce, 0x33, 0x57, 56 0x6b, 0x31, 0x5e, 0xce, 0xcb, 0xb6, 0x40, 0x68, 57 0x37, 0xbf, 0x51, 0xf5, 0x02, 0x21, 0x00, 0xff, 58 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0xff, 59 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xbc, 60 0xe6, 0xfa, 0xad, 0xa7, 0x17, 0x9e, 0x84, 0xf3, 61 0xb9, 0xca, 0xc2, 0xfc, 0x63, 0x25, 0x51, 0x02, 62 0x01, 0x01, 63 }; 64 65 static void 66 hexdump(const unsigned char *buf, size_t len) 67 { 68 size_t i; 69 70 for (i = 1; i <= len; i++) 71 fprintf(stderr, " 0x%02hhx,%s", buf[i - 1], i % 8 ? "" : "\n"); 72 73 fprintf(stderr, "\n"); 74 } 75 76 static int 77 compare_data(const char *label, const unsigned char *d1, size_t d1_len, 78 const unsigned char *d2, size_t d2_len) 79 { 80 if (d1_len != d2_len) { 81 fprintf(stderr, "FAIL: got %s with length %zu, want %zu\n", 82 label, d1_len, d2_len); 83 return -1; 84 } 85 if (memcmp(d1, d2, d1_len) != 0) { 86 fprintf(stderr, "FAIL: %sdiffer\n", label); 87 fprintf(stderr, "got:\n"); 88 hexdump(d1, d1_len); 89 fprintf(stderr, "want:\n"); 90 hexdump(d2, d2_len); 91 return -1; 92 } 93 return 0; 94 } 95 96 static int 97 ec_group_pkparameters_test(const char *label, int asn1_flag, 98 const uint8_t *test_data, size_t test_data_len) 99 { 100 EC_GROUP *group_a = NULL, *group_b = NULL; 101 unsigned char *out = NULL, *data = NULL; 102 const unsigned char *p; 103 BIO *bio_mem = NULL; 104 int failure = 1; 105 int len; 106 107 /* 108 * Test i2d_ECPKParameters/d2i_ECPKParameters. 109 */ 110 if ((group_a = EC_GROUP_new_by_curve_name(NID_X9_62_prime256v1)) == NULL) 111 errx(1, "failed to create EC_GROUP"); 112 113 EC_GROUP_set_asn1_flag(group_a, asn1_flag); 114 115 if ((len = i2d_ECPKParameters(group_a, &out)) < 0) { 116 fprintf(stderr, "FAIL: i2d_ECPKParameters failed\n"); 117 goto done; 118 } 119 if (compare_data(label, out, len, test_data, test_data_len) == -1) 120 goto done; 121 122 p = out; 123 if ((group_b = d2i_ECPKParameters(NULL, &p, len)) == NULL) { 124 fprintf(stderr, "FAIL: d2i_ECPKParameters failed\n"); 125 goto done; 126 } 127 128 if (EC_GROUP_cmp(group_a, group_b, NULL) != 0) { 129 fprintf(stderr, "FAIL: EC_GROUPs do not match!\n"); 130 goto done; 131 } 132 133 p = out; 134 if ((group_a = d2i_ECPKParameters(&group_a, &p, len)) == NULL) { 135 fprintf(stderr, "FAIL: d2i_ECPKParameters failed\n"); 136 goto done; 137 } 138 139 if (EC_GROUP_cmp(group_a, group_b, NULL) != 0) { 140 fprintf(stderr, "FAIL: EC_GROUPs do not match!\n"); 141 goto done; 142 } 143 144 /* 145 * Test i2d_ECPKParameters_bio/d2i_ECPKParameters_bio. 146 */ 147 if ((bio_mem = BIO_new(BIO_s_mem())) == NULL) 148 errx(1, "BIO_new failed for BIO_s_mem"); 149 150 if ((len = i2d_ECPKParameters_bio(bio_mem, group_a)) < 0) { 151 fprintf(stderr, "FAIL: i2d_ECPKParameters_bio failed\n"); 152 goto done; 153 } 154 155 len = BIO_get_mem_data(bio_mem, &data); 156 if (compare_data(label, out, len, test_data, test_data_len) == -1) 157 goto done; 158 159 EC_GROUP_free(group_b); 160 if ((group_b = d2i_ECPKParameters_bio(bio_mem, NULL)) == NULL) { 161 fprintf(stderr, "FAIL: d2i_ECPKParameters_bio failed\n"); 162 goto done; 163 } 164 165 if (EC_GROUP_cmp(group_a, group_b, NULL) != 0) { 166 fprintf(stderr, "FAIL: EC_GROUPs do not match!\n"); 167 goto done; 168 } 169 170 failure = 0; 171 172 done: 173 BIO_free_all(bio_mem); 174 EC_GROUP_free(group_a); 175 EC_GROUP_free(group_b); 176 free(out); 177 178 return (failure); 179 } 180 181 static int 182 ec_group_pkparameters_named_curve_test(void) 183 { 184 return ec_group_pkparameters_test("ECPKPARAMETERS named curve", 185 OPENSSL_EC_NAMED_CURVE, ec_secp256r1_pkparameters_named_curve, 186 sizeof(ec_secp256r1_pkparameters_named_curve)); 187 } 188 189 static int 190 ec_group_pkparameters_parameters_test(void) 191 { 192 return ec_group_pkparameters_test("ECPKPARAMETERS parameters", 193 OPENSSL_EC_EXPLICIT_CURVE, ec_secp256r1_pkparameters_parameters, 194 sizeof(ec_secp256r1_pkparameters_parameters)); 195 } 196 197 int 198 main(int argc, char **argv) 199 { 200 int failed = 0; 201 202 failed |= ec_group_pkparameters_named_curve_test(); 203 failed |= ec_group_pkparameters_parameters_test(); 204 205 return (failed); 206 } 207