Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 1 | /* |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 2 | * Copyright (c) 2020-2021, Arm Limited and Contributors. All rights reserved. |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <cstdio> |
| 8 | #include <cstring> |
| 9 | #include <unistd.h> |
| 10 | #include <service/crypto/client/cpp/crypto_client.h> |
| 11 | #include "ts-demo.h" |
| 12 | |
| 13 | class ts_demo { |
| 14 | public: |
| 15 | ts_demo(crypto_client *crypto_client, bool is_verbose) : |
| 16 | m_crypto_client(crypto_client), |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 17 | m_signing_key_id(0), |
| 18 | m_encryption_key_id(0), |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 19 | m_verbose(is_verbose), |
| 20 | m_all_ok(true) { |
| 21 | |
| 22 | } |
| 23 | |
| 24 | ~ts_demo() { |
| 25 | |
| 26 | } |
| 27 | |
| 28 | bool is_all_ok() const { |
| 29 | return m_all_ok; |
| 30 | } |
| 31 | |
| 32 | void print_intro() { |
| 33 | |
| 34 | if (m_verbose) { |
| 35 | printf("\nDemonstrates use of trusted services from an application"); |
| 36 | printf("\n---------------------------------------------------------"); |
| 37 | printf("\nA client requests a set of crypto operations performed by"); |
| 38 | printf("\nthe Crypto service. Key storage for persistent keys is"); |
| 39 | printf("\nprovided by the Secure Storage service via the ITS client.\n"); |
| 40 | printf("\n"); |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | void wait(int seconds) { |
| 45 | |
| 46 | if (m_verbose) sleep(seconds); |
| 47 | } |
| 48 | |
| 49 | void print_status(psa_status_t status) { |
| 50 | |
| 51 | if (m_verbose) { |
| 52 | |
| 53 | if (status == PSA_SUCCESS) { |
| 54 | printf("\n\tOperation successful\n"); |
| 55 | } |
| 56 | else { |
| 57 | printf("\n\tOperation failed. op error: %d RPC call status %d\n", |
| 58 | status, m_crypto_client->err_rpc_status()); |
| 59 | } |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | void print_byte_array(const uint8_t *array, size_t len) |
| 64 | { |
| 65 | size_t count = 0; |
| 66 | size_t column = 0; |
| 67 | |
| 68 | while (count < len) { |
| 69 | |
| 70 | if (column == 0) printf("\n\t\t"); |
| 71 | else printf(" "); |
| 72 | |
| 73 | printf("%02X", array[count]); |
| 74 | |
| 75 | ++count; |
| 76 | column = (column +1) % 8; |
| 77 | } |
| 78 | |
| 79 | printf("\n"); |
| 80 | } |
| 81 | |
| 82 | void generate_signing_key() |
| 83 | { |
| 84 | psa_status_t status; |
| 85 | psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; |
| 86 | |
| 87 | psa_set_key_id(&attributes, SIGNING_KEY_ID); |
| 88 | psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH); |
| 89 | psa_set_key_algorithm(&attributes, PSA_ALG_DETERMINISTIC_ECDSA(PSA_ALG_SHA_256)); |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 90 | psa_set_key_type(&attributes, PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1)); |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 91 | psa_set_key_bits(&attributes, 256); |
| 92 | |
| 93 | if (m_verbose) printf("Generating ECC signing key"); |
| 94 | |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 95 | status = m_crypto_client->generate_key(&attributes, &m_signing_key_id); |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 96 | psa_reset_key_attributes(&attributes); |
| 97 | |
| 98 | print_status(status); |
| 99 | |
| 100 | m_all_ok &= (status == PSA_SUCCESS); |
| 101 | } |
| 102 | |
| 103 | void sign_and_verify_message(const char *message) |
| 104 | { |
| 105 | |
| 106 | psa_status_t status; |
| 107 | uint8_t hash[100]; |
| 108 | size_t hash_len = strlen(message) + 1; |
| 109 | |
| 110 | if (hash_len > sizeof(hash)) hash_len = sizeof(hash) - 1; |
| 111 | |
| 112 | memset(hash, 0, sizeof(hash)); |
| 113 | memcpy(hash, message, hash_len); |
| 114 | |
| 115 | /* Sign message */ |
| 116 | uint8_t signature[PSA_SIGNATURE_MAX_SIZE]; |
| 117 | size_t signature_length; |
| 118 | |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 119 | if (m_verbose) printf("Signing message: \"%s\" using key: %d", hash, m_signing_key_id); |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 120 | |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 121 | status = m_crypto_client->sign_hash(m_signing_key_id, |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 122 | PSA_ALG_DETERMINISTIC_ECDSA(PSA_ALG_SHA_256), hash, hash_len, |
| 123 | signature, sizeof(signature), &signature_length); |
| 124 | |
| 125 | print_status(status); |
| 126 | |
| 127 | if (m_verbose && (status == PSA_SUCCESS)) { |
| 128 | printf("\tSignature bytes: "); |
| 129 | print_byte_array(signature, signature_length); |
| 130 | } |
| 131 | |
| 132 | m_all_ok &= (status == PSA_SUCCESS); |
| 133 | |
| 134 | /* Verify signature against original message */ |
| 135 | if (m_verbose) printf("Verify signature using original message: \"%s\"", hash); |
| 136 | |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 137 | status = m_crypto_client->verify_hash(m_signing_key_id, |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 138 | PSA_ALG_DETERMINISTIC_ECDSA(PSA_ALG_SHA_256), hash, hash_len, |
| 139 | signature, signature_length); |
| 140 | |
| 141 | print_status(status); |
| 142 | |
| 143 | m_all_ok &= (status == PSA_SUCCESS); |
| 144 | |
| 145 | /* Verify signature against modified message */ |
| 146 | hash[0] = '!'; |
| 147 | if (m_verbose) printf("Verify signature using modified message: \"%s\"", hash); |
| 148 | |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 149 | status = m_crypto_client->verify_hash(m_signing_key_id, |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 150 | PSA_ALG_DETERMINISTIC_ECDSA(PSA_ALG_SHA_256), hash, hash_len, |
| 151 | signature, signature_length); |
| 152 | |
| 153 | if (status == PSA_ERROR_INVALID_SIGNATURE) { |
| 154 | if (m_verbose) printf("\n\tSuccessfully detected modified message\n"); |
| 155 | } |
| 156 | else { |
| 157 | print_status(status); |
| 158 | } |
| 159 | |
| 160 | m_all_ok &= (status != PSA_SUCCESS); |
| 161 | } |
| 162 | |
| 163 | void generate_asymmetric_encryption_key() |
| 164 | { |
| 165 | psa_status_t status; |
| 166 | psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; |
| 167 | |
| 168 | psa_set_key_id(&attributes, ENCRYPTION_KEY_ID); |
| 169 | psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT); |
| 170 | psa_set_key_algorithm(&attributes, PSA_ALG_RSA_PKCS1V15_CRYPT); |
| 171 | psa_set_key_type(&attributes, PSA_KEY_TYPE_RSA_KEY_PAIR); |
Imre Kis | 8a86a00 | 2024-01-22 15:43:11 +0100 | [diff] [blame] | 172 | psa_set_key_bits(&attributes, 1024); |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 173 | |
| 174 | if (m_verbose) printf("Generating RSA encryption key"); |
| 175 | |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 176 | status = m_crypto_client->generate_key(&attributes, &m_encryption_key_id); |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 177 | psa_reset_key_attributes(&attributes); |
| 178 | |
| 179 | print_status(status); |
| 180 | |
| 181 | m_all_ok &= (status == PSA_SUCCESS); |
| 182 | } |
| 183 | |
| 184 | void encrypt_add_decrypt_message(const char *message) |
| 185 | { |
| 186 | psa_status_t status; |
| 187 | size_t message_len = strlen(message) + 1; |
| 188 | |
| 189 | /* Encrypt a message */ |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 190 | if (m_verbose) printf("Encrypting message: \"%s\" using RSA key: %d", message, m_encryption_key_id); |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 191 | |
| 192 | uint8_t ciphertext[256]; |
| 193 | size_t ciphertext_len = 0; |
| 194 | |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 195 | status = m_crypto_client->asymmetric_encrypt(m_encryption_key_id, PSA_ALG_RSA_PKCS1V15_CRYPT, |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 196 | (const uint8_t*)message, message_len, NULL, 0, |
| 197 | ciphertext, sizeof(ciphertext), &ciphertext_len); |
| 198 | print_status(status); |
| 199 | |
| 200 | if (m_verbose && (status == PSA_SUCCESS)) { |
| 201 | printf("\tEncrypted message: "); |
| 202 | print_byte_array(ciphertext, ciphertext_len); |
| 203 | } |
| 204 | |
| 205 | m_all_ok &= (status == PSA_SUCCESS); |
| 206 | |
| 207 | /* Decrypt it */ |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 208 | if (m_verbose) printf("Decrypting message using RSA key: %d", m_encryption_key_id); |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 209 | |
| 210 | uint8_t plaintext[256]; |
| 211 | size_t plaintext_len = 0; |
| 212 | |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 213 | status = m_crypto_client->asymmetric_decrypt(m_encryption_key_id, PSA_ALG_RSA_PKCS1V15_CRYPT, |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 214 | ciphertext, ciphertext_len, NULL, 0, |
| 215 | plaintext, sizeof(plaintext), &plaintext_len); |
| 216 | print_status(status); |
| 217 | |
| 218 | if (m_verbose && (status == PSA_SUCCESS)) { |
| 219 | |
| 220 | if ((plaintext_len == message_len) && |
| 221 | (memcmp(message, plaintext, plaintext_len) == 0)) { |
| 222 | if (m_verbose) printf("\tDecrypted message: \"%s\"\n", plaintext); |
| 223 | } |
| 224 | else { |
| 225 | printf("\tDecrypted message is different from original!: "); |
| 226 | print_byte_array(plaintext, plaintext_len); |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | m_all_ok &= (status == PSA_SUCCESS); |
| 231 | } |
| 232 | |
| 233 | void export_public_key() |
| 234 | { |
| 235 | psa_status_t status; |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 236 | uint8_t key_buf[PSA_EXPORT_PUBLIC_KEY_MAX_SIZE]; |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 237 | size_t key_len = 0; |
| 238 | |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 239 | if (m_verbose) printf("Exporting public key: %d", m_signing_key_id); |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 240 | |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 241 | status = m_crypto_client->export_public_key(m_signing_key_id, key_buf, sizeof(key_buf), &key_len); |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 242 | |
| 243 | print_status(status); |
| 244 | |
| 245 | if (m_verbose && (status == PSA_SUCCESS)) { |
| 246 | printf("\tPublic key bytes: "); |
| 247 | print_byte_array(key_buf, key_len); |
| 248 | } |
| 249 | |
| 250 | m_all_ok &= (status == PSA_SUCCESS); |
| 251 | } |
| 252 | |
| 253 | void generate_random_number(size_t length) |
| 254 | { |
| 255 | psa_status_t status; |
| 256 | uint8_t buffer[length]; |
| 257 | |
| 258 | if (m_verbose) printf("Generating random bytes length: %ld", length); |
| 259 | |
| 260 | status = m_crypto_client->generate_random(buffer, length); |
| 261 | |
| 262 | print_status(status); |
| 263 | |
| 264 | if (m_verbose && (status == PSA_SUCCESS)) { |
| 265 | printf("\tRandom bytes: "); |
| 266 | print_byte_array(buffer, length); |
| 267 | } |
| 268 | |
| 269 | m_all_ok &= (status == PSA_SUCCESS); |
| 270 | } |
| 271 | |
| 272 | void destroy_keys() |
| 273 | { |
| 274 | psa_status_t status; |
| 275 | |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 276 | if (m_verbose) printf("Destroying signing key: %d", m_signing_key_id); |
| 277 | status = m_crypto_client->destroy_key(m_signing_key_id); |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 278 | print_status(status); |
| 279 | m_all_ok &= (status == PSA_SUCCESS); |
| 280 | |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 281 | if (m_verbose) printf("Destroying encryption key: %d", m_encryption_key_id); |
| 282 | status = m_crypto_client->destroy_key(m_encryption_key_id); |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 283 | print_status(status); |
| 284 | m_all_ok &= (status == PSA_SUCCESS); |
| 285 | } |
| 286 | |
| 287 | private: |
| 288 | |
| 289 | static const psa_key_id_t SIGNING_KEY_ID = 0x100; |
| 290 | static const psa_key_id_t ENCRYPTION_KEY_ID = 0x101; |
| 291 | |
| 292 | crypto_client *m_crypto_client; |
Balint Dobszay | 3c52ce6 | 2021-05-10 16:27:18 +0200 | [diff] [blame] | 293 | psa_key_id_t m_signing_key_id; |
| 294 | psa_key_id_t m_encryption_key_id; |
Julian Hall | 38c729b | 2020-11-23 18:23:03 +0100 | [diff] [blame] | 295 | |
| 296 | bool m_verbose; |
| 297 | bool m_all_ok; |
| 298 | }; |
| 299 | |
| 300 | |
| 301 | int run_ts_demo(crypto_client *crypto_client, bool is_verbose) { |
| 302 | |
| 303 | ts_demo demo(crypto_client, is_verbose); |
| 304 | |
| 305 | demo.print_intro(); |
| 306 | demo.wait(1); |
| 307 | demo.generate_random_number(1); |
| 308 | demo.wait(1); |
| 309 | demo.generate_random_number(7); |
| 310 | demo.wait(1); |
| 311 | demo.generate_random_number(128); |
| 312 | demo.wait(1); |
| 313 | demo.generate_signing_key(); |
| 314 | demo.wait(2); |
| 315 | demo.sign_and_verify_message("The quick brown fox"); |
| 316 | demo.wait(3); |
| 317 | demo.sign_and_verify_message("jumps over the lazy dog"); |
| 318 | demo.wait(3); |
| 319 | demo.generate_asymmetric_encryption_key(); |
| 320 | demo.wait(2); |
| 321 | demo.encrypt_add_decrypt_message("Top secret"); |
| 322 | demo.wait(3); |
| 323 | demo.export_public_key(); |
| 324 | demo.wait(2); |
| 325 | demo.destroy_keys(); |
| 326 | demo.wait(2); |
| 327 | |
| 328 | return demo.is_all_ok() ? 0 : -1; |
| 329 | } |