/* mbedTLS AES test */ #include #include #include #include #include "mbedtls/aes.h" #include "mbedtls/gcm.h" #include "unity.h" #include "sdkconfig.h" #include "esp_timer.h" #include "esp_heap_caps.h" #include "test_utils.h" static const uint8_t key_256[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, }; static const uint8_t iv[] = { 0x10, 0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, }; /* Cipher produced via this Python: from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes from cryptography.hazmat.backends import default_backend def as_c_array(byte_arr): hex_str = '' for idx, byte in enumerate(byte_arr): hex_str += "0x{:02x}, ".format(byte) bytes_per_line = 8 if idx % bytes_per_line == bytes_per_line - 1: hex_str += '\n' return hex_str key = bytearray(range(32)) iv = bytearray(range(16, 0, -1)) print("Key: \n{}".format(as_c_array(key))) print("IV: \n{}".format(as_c_array(iv))) # Replace CTR with desired mode cipher = Cipher(algorithms.AES(key), modes.CTR(iv), backend=default_backend()) encryptor = cipher.encryptor() input_len = 1000 plain = b'\x3A'*input_len print(as_c_array(plain)) ct = encryptor.update(plain) + encryptor.finalize() print("Chipertext: {}".format(as_c_array(ct))) */ TEST_CASE("mbedtls CBC AES-256 test", "[aes]") { const unsigned SZ = 1600; mbedtls_aes_context ctx; uint8_t nonce[16]; const uint8_t expected_cipher_end[] = { 0x3e, 0x68, 0x8a, 0x02, 0xe6, 0xf2, 0x6a, 0x9e, 0x9b, 0xb2, 0xc0, 0xc4, 0x63, 0x63, 0xd9, 0x25, 0x51, 0xdc, 0xc2, 0x71, 0x96, 0xb3, 0xe5, 0xcd, 0xbd, 0x0e, 0xf2, 0xef, 0xa9, 0xab, 0xab, 0x2d, }; memcpy(nonce, iv, 16); // allocate internal memory uint8_t *chipertext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); uint8_t *plaintext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(chipertext); TEST_ASSERT_NOT_NULL(plaintext); TEST_ASSERT_NOT_NULL(decryptedtext); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key_256, 256); memset(plaintext, 0x3A, SZ); memset(decryptedtext, 0x0, SZ); // Encrypt mbedtls_aes_crypt_cbc(&ctx, MBEDTLS_AES_ENCRYPT, SZ, nonce, plaintext, chipertext); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher_end, chipertext + SZ - 32, 32); // Decrypt memcpy(nonce, iv, 16); mbedtls_aes_setkey_dec(&ctx, key_256, 256); mbedtls_aes_crypt_cbc(&ctx, MBEDTLS_AES_DECRYPT, SZ, nonce, chipertext, decryptedtext); TEST_ASSERT_EQUAL_HEX8_ARRAY(plaintext, decryptedtext, SZ); mbedtls_aes_free(&ctx); free(plaintext); free(chipertext); free(decryptedtext); } TEST_CASE("mbedtls CTR AES-256 test", "[aes]") { const unsigned SZ = 1000; mbedtls_aes_context ctx; uint8_t nonce[16]; uint8_t stream_block[16]; size_t nc_off = 0; const uint8_t expected_cipher_end[] = { 0xd4, 0xdc, 0x4f, 0x8f, 0xfe, 0x86, 0xee, 0xb5, 0x14, 0x7f, 0xba, 0x30, 0x25, 0xa6, 0x7f, 0x6c, 0xb5, 0x73, 0xaf, 0x90, 0xd7, 0xff, 0x36, 0xba, 0x2b, 0x1d, 0xec, 0xb9, 0x38, 0xfa, 0x0d, 0xeb, }; memcpy(nonce, iv, 16); // allocate internal memory uint8_t *chipertext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); uint8_t *plaintext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(chipertext); TEST_ASSERT_NOT_NULL(plaintext); TEST_ASSERT_NOT_NULL(decryptedtext); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key_256, 256); memset(plaintext, 0x3A, SZ); memset(decryptedtext, 0x0, SZ); // Encrypt mbedtls_aes_crypt_ctr(&ctx, SZ, &nc_off, nonce, stream_block, plaintext, chipertext); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher_end, chipertext + SZ - 32, 32); // Decrypt nc_off = 0; memcpy(nonce, iv, 16); mbedtls_aes_crypt_ctr(&ctx, SZ, &nc_off, nonce, stream_block, chipertext, decryptedtext); TEST_ASSERT_EQUAL_HEX8_ARRAY(plaintext, decryptedtext, SZ); mbedtls_aes_free(&ctx); free(plaintext); free(chipertext); free(decryptedtext); } TEST_CASE("mbedtls OFB AES-256 test", "[aes]") { const unsigned SZ = 1000; mbedtls_aes_context ctx; uint8_t nonce[16]; size_t nc_off = 0; const uint8_t expected_cipher_end[] = { 0xca, 0xc3, 0x05, 0x77, 0xae, 0xb9, 0x38, 0xd6, 0x03, 0x0a, 0xad, 0x90, 0x6e, 0xdd, 0xf3, 0x9a, 0x41, 0x4d, 0x71, 0x30, 0x04, 0x9f, 0xd3, 0x53, 0xb7, 0x5e, 0xb4, 0xfd, 0x93, 0xf8, 0x31, 0x6a, }; memcpy(nonce, iv, 16); // allocate internal memory uint8_t *chipertext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); uint8_t *plaintext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(chipertext); TEST_ASSERT_NOT_NULL(plaintext); TEST_ASSERT_NOT_NULL(decryptedtext); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key_256, 256); memset(plaintext, 0x3A, SZ); memset(decryptedtext, 0x0, SZ); // Encrypt mbedtls_aes_crypt_ofb(&ctx, SZ, &nc_off, nonce, plaintext, chipertext); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher_end, chipertext + SZ - 32, 32); // Decrypt nc_off = 0; memcpy(nonce, iv, 16); mbedtls_aes_crypt_ofb(&ctx, SZ, &nc_off, nonce, chipertext, decryptedtext); TEST_ASSERT_EQUAL_HEX8_ARRAY(plaintext, decryptedtext, SZ); mbedtls_aes_free(&ctx); free(plaintext); free(chipertext); free(decryptedtext); } TEST_CASE("mbedtls CFB-8 AES-256 test", "[aes]") { const unsigned SZ = 1000; mbedtls_aes_context ctx; uint8_t nonce[16]; const uint8_t expected_cipher_end[] = { 0x69, 0xdc, 0x1d, 0x8a, 0x0b, 0x9e, 0xbc, 0x84, 0x29, 0xa2, 0x04, 0xb6, 0x91, 0x6b, 0xb2, 0x83, 0x13, 0x23, 0x54, 0xcb, 0xf9, 0x6d, 0xcc, 0x53, 0x04, 0x59, 0xd1, 0xc9, 0xff, 0xab, 0xe2, 0x37, }; memcpy(nonce, iv, 16); // allocate internal memory uint8_t *chipertext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); uint8_t *plaintext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(chipertext); TEST_ASSERT_NOT_NULL(plaintext); TEST_ASSERT_NOT_NULL(decryptedtext); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key_256, 256); memset(plaintext, 0x3A, SZ); memset(decryptedtext, 0x0, SZ); // Encrypt mbedtls_aes_crypt_cfb8(&ctx, MBEDTLS_AES_ENCRYPT, SZ, nonce, plaintext, chipertext); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher_end, chipertext + SZ - 32, 32); // Decrypt memcpy(nonce, iv, 16); mbedtls_aes_crypt_cfb8(&ctx, MBEDTLS_AES_DECRYPT, SZ, nonce, chipertext, decryptedtext); TEST_ASSERT_EQUAL_HEX8_ARRAY(plaintext, decryptedtext, SZ); mbedtls_aes_free(&ctx); free(plaintext); free(chipertext); free(decryptedtext); } TEST_CASE("mbedtls CFB-128 AES-256 test", "[aes]") { const unsigned SZ = 1000; mbedtls_aes_context ctx; uint8_t nonce[16]; size_t nc_off = 0; const uint8_t expected_cipher_end[] = { 0xf3, 0x64, 0x20, 0xa1, 0x70, 0x2a, 0xd9, 0x3f, 0xb7, 0x48, 0x8c, 0x2c, 0x1f, 0x65, 0x53, 0xc2, 0xac, 0xfd, 0x82, 0xe5, 0x31, 0x24, 0x1f, 0x30, 0xaf, 0xcc, 0x8d, 0xb3, 0xf3, 0x63, 0xe1, 0xa0, }; memcpy(nonce, iv, 16); // allocate internal memory uint8_t *chipertext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); uint8_t *plaintext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(chipertext); TEST_ASSERT_NOT_NULL(plaintext); TEST_ASSERT_NOT_NULL(decryptedtext); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key_256, 256); memset(plaintext, 0x3A, SZ); memset(decryptedtext, 0x0, SZ); // Encrypt mbedtls_aes_crypt_cfb128(&ctx, MBEDTLS_AES_ENCRYPT, SZ, &nc_off, nonce, plaintext, chipertext); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher_end, chipertext + SZ - 32, 32); // Decrypt nc_off = 0; memcpy(nonce, iv, 16); mbedtls_aes_crypt_cfb128(&ctx, MBEDTLS_AES_DECRYPT, SZ, &nc_off, nonce, chipertext, decryptedtext); TEST_ASSERT_EQUAL_HEX8_ARRAY(plaintext, decryptedtext, SZ); mbedtls_aes_free(&ctx); free(plaintext); free(chipertext); free(decryptedtext); } TEST_CASE("mbedtls CTR stream test", "[aes]") { const unsigned SZ = 100; mbedtls_aes_context ctx; uint8_t nonce[16]; uint8_t key[16]; uint8_t stream_block[16]; /* Cipher produced via this Python: import os, binascii from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes from cryptography.hazmat.backends import default_backend key = b'\x44' * 16 nonce = b'\xee' * 16 cipher = Cipher(algorithms.AES(key), modes.CTR(nonce), backend=default_backend()) encryptor = cipher.encryptor() ct = encryptor.update(b'\xaa' * 100) + encryptor.finalize() ct_arr = "" for idx, b in enumerate(ct): if idx % 8 == 0: ct_arr += '\n' ct_arr += "0x{}, ".format(binascii.hexlify(b)) print(ct_arr) */ const uint8_t expected_cipher[] = { 0xc5, 0x78, 0xa7, 0xb4, 0xf3, 0xb9, 0xcb, 0x8b, 0x09, 0xe0, 0xd6, 0x89, 0x14, 0x6a, 0x19, 0x09, 0xde, 0xaf, 0x37, 0x19, 0x32, 0x4d, 0xca, 0xf6, 0xff, 0x6e, 0xd2, 0x5d, 0x87, 0x51, 0xaa, 0x8c, 0x1c, 0xe3, 0x3b, 0xbb, 0x18, 0xf5, 0xa0, 0x1b, 0xdc, 0x29, 0x52, 0x63, 0xf6, 0x5d, 0x49, 0x85, 0x29, 0xf1, 0xf0, 0x69, 0x8f, 0xa6, 0x9f, 0x38, 0x5c, 0xdd, 0x26, 0xf8, 0x9d, 0x40, 0xa1, 0xff, 0x52, 0x46, 0xe1, 0x72, 0x70, 0x39, 0x73, 0xff, 0xd0, 0x5e, 0xe5, 0x3f, 0xc5, 0xed, 0x5c, 0x18, 0xa7, 0x84, 0xd8, 0xdf, 0x9d, 0xb5, 0x06, 0xb1, 0xa7, 0xcf, 0x2e, 0x7a, 0x51, 0xfc, 0x44, 0xc5, 0xb9, 0x5f, 0x22, 0x47, }; memset(nonce, 0xEE, 16); memset(key, 0x44, 16); // allocate internal memory uint8_t *chipertext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); uint8_t *plaintext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(chipertext); TEST_ASSERT_NOT_NULL(plaintext); TEST_ASSERT_NOT_NULL(decryptedtext); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key, 128); memset(plaintext, 0xAA, SZ); /* Test that all the end results are the same no matter how many bytes we encrypt each call */ for (int bytes_to_process = 1; bytes_to_process < SZ; bytes_to_process++) { memset(nonce, 0xEE, 16); memset(chipertext, 0x0, SZ); memset(decryptedtext, 0x0, SZ); size_t offset = 0; // Encrypt for (int idx = 0; idx < SZ; idx = idx + bytes_to_process) { // Limit length of last call to avoid exceeding buffer size size_t length = (idx + bytes_to_process > SZ) ? (SZ - idx) : bytes_to_process; mbedtls_aes_crypt_ctr(&ctx, length, &offset, nonce, stream_block, plaintext + idx, chipertext + idx ); } TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher, chipertext, SZ); // Decrypt memset(nonce, 0xEE, 16); offset = 0; for (int idx = 0; idx < SZ; idx = idx + bytes_to_process) { // Limit length of last call to avoid exceeding buffer size size_t length = (idx + bytes_to_process > SZ) ? (SZ - idx) : bytes_to_process; mbedtls_aes_crypt_ctr(&ctx, length, &offset, nonce, stream_block, chipertext + idx, decryptedtext + idx ); } TEST_ASSERT_EQUAL_HEX8_ARRAY(plaintext, decryptedtext, SZ); } mbedtls_aes_free(&ctx); free(plaintext); free(chipertext); free(decryptedtext); } TEST_CASE("mbedtls OFB stream test", "[aes]") { const unsigned SZ = 100; mbedtls_aes_context ctx; uint8_t iv[16]; uint8_t key[16]; /* Cipher produced via this Python: import os, binascii from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes from cryptography.hazmat.backends import default_backend key = b'\x44' * 16 iv = b'\xee' * 16 cipher = Cipher(algorithms.AES(key), modes.OFB(iv), backend=default_backend()) encryptor = cipher.encryptor() ct = encryptor.update(b'\xaa' * 100) + encryptor.finalize() ct_arr = "" for idx, b in enumerate(ct): if idx % 8 == 0: ct_arr += '\n' ct_arr += "0x{}, ".format(binascii.hexlify(b)) print(ct_arr) */ const uint8_t expected_cipher[] = { 0xc5, 0x78, 0xa7, 0xb4, 0xf3, 0xb9, 0xcb, 0x8b, 0x09, 0xe0, 0xd6, 0x89, 0x14, 0x6a, 0x19, 0x09, 0x0a, 0x33, 0x8b, 0xab, 0x82, 0xcb, 0x20, 0x8f, 0x74, 0x2a, 0x6c, 0xb3, 0xc6, 0xe8, 0x18, 0x89, 0x09, 0xb6, 0xaf, 0x20, 0xcd, 0xea, 0x74, 0x14, 0x48, 0x61, 0xe8, 0x4d, 0x50, 0x12, 0x9f, 0x5e, 0xb8, 0x10, 0x53, 0x3b, 0x74, 0xd9, 0xd0, 0x95, 0x13, 0xdc, 0x14, 0xcf, 0x0c, 0xa1, 0x90, 0xfd, 0xa2, 0x58, 0x12, 0xb2, 0x00, 0x2c, 0x5b, 0x7a, 0x2a, 0x76, 0x80, 0x20, 0x82, 0x39, 0xa2, 0x21, 0xf8, 0x7a, 0xec, 0xae, 0x82, 0x6a, 0x5c, 0xd3, 0x04, 0xd9, 0xbd, 0xe4, 0x53, 0xc9, 0xdf, 0x67, 0xaa, 0x5c, 0xaf, 0xa6, }; memset(key, 0x44, 16); // allocate internal memory uint8_t *chipertext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); uint8_t *plaintext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(chipertext); TEST_ASSERT_NOT_NULL(plaintext); TEST_ASSERT_NOT_NULL(decryptedtext); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key, 128); memset(plaintext, 0xAA, SZ); /* Test that all the end results are the same no matter how many bytes we encrypt each call */ for (int bytes_to_process = 1; bytes_to_process < SZ; bytes_to_process++) { // Encrypt memset(iv, 0xEE, 16); size_t offset = 0; for (int idx = 0; idx < SZ; idx = idx + bytes_to_process) { // Limit length of last call to avoid exceeding buffer size size_t length = ( (idx + bytes_to_process) > SZ) ? (SZ - idx) : bytes_to_process; mbedtls_aes_crypt_ofb(&ctx, length, &offset, iv, plaintext + idx, chipertext + idx); } TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher, chipertext, SZ); // Decrypt memset(iv, 0xEE, 16); offset = 0; for (int idx = 0; idx < SZ; idx = idx + bytes_to_process) { // Limit length of last call to avoid exceeding buffer size size_t length = (idx + bytes_to_process > SZ) ? (SZ - idx) : bytes_to_process; mbedtls_aes_crypt_ofb(&ctx, length, &offset, iv, chipertext + idx, decryptedtext + idx); } TEST_ASSERT_EQUAL_HEX8_ARRAY(plaintext, decryptedtext, SZ); } mbedtls_aes_free(&ctx); free(plaintext); free(chipertext); free(decryptedtext); } TEST_CASE("mbedtls CFB8 stream test", "[aes]") { const unsigned SZ = 32; mbedtls_aes_context ctx; uint8_t iv[16]; uint8_t key[16]; /* Cipher produced via this Python: import os, binascii from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes from cryptography.hazmat.backends import default_backend key = b'\x44' * 16 iv = b'\xee' * 16 cipher = Cipher(algorithms.AES(key), modes.CFB8(iv), backend=default_backend()) encryptor = cipher.encryptor() ct = encryptor.update(b'\xaa' * 100) + encryptor.finalize() ct_arr = "" for idx, b in enumerate(ct): if idx % 8 == 0: ct_arr += '\n' ct_arr += "0x{}, ".format(binascii.hexlify(b)) print(ct_arr) */ const uint8_t expected_cipher[] = { 0xc5, 0x2f, 0xb0, 0x9b, 0x94, 0x9c, 0xa4, 0x5c, 0x0f, 0x4d, 0xa1, 0x9d, 0xd1, 0x19, 0xfc, 0x04, 0xe2, 0x7f, 0x04, 0x82, 0x6a, 0xa3, 0x61, 0xbb, 0x07, 0x6f, 0xac, 0xb9, 0xdf, 0x00, 0xf9, 0xa8, 0xc4, 0xbe, 0x9d, 0x4d, 0xd9, 0x42, 0x8a, 0x83, 0x12, 0x8b, 0xeb, 0xd7, 0x88, 0x70, 0x8a, 0xed, 0x46, 0x81, 0x5b, 0x4c, 0x14, 0x67, 0xe0, 0xfb, 0xab, 0x34, 0x90, 0x85, 0x24, 0xd2, 0x6b, 0x64, 0xdf, 0x1d, 0x04, 0xfd, 0x69, 0xf6, 0x30, 0xbe, 0xa6, 0xac, 0x0b, 0x54, 0x25, 0x24, 0x67, 0xd6, 0x09, 0xb1, 0x8f, 0x91, 0x63, 0xbd, 0xdf, 0xa1, 0x8a, 0xa3, 0x2e, 0xeb, 0x15, 0x7d, 0xe5, 0x37, 0xe5, 0x5a, 0x9f, 0xa5, }; memset(key, 0x44, 16); // allocate internal memory uint8_t *chipertext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); uint8_t *plaintext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(chipertext); TEST_ASSERT_NOT_NULL(plaintext); TEST_ASSERT_NOT_NULL(decryptedtext); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key, 128); memset(plaintext, 0xAA, SZ); /* Test that all the end results are the same no matter how many bytes we encrypt each call */ for (int bytes_to_process = 1; bytes_to_process < SZ; bytes_to_process++) { memset(iv, 0xEE, 16); for (int idx = 0; idx < SZ; idx = idx + bytes_to_process) { // Limit length of last call to avoid exceeding buffer size size_t length = ( (idx + bytes_to_process) > SZ) ? (SZ - idx) : bytes_to_process; mbedtls_aes_crypt_cfb8(&ctx, MBEDTLS_AES_ENCRYPT, length, iv, plaintext + idx, chipertext + idx); } TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher, chipertext, SZ); memset(iv, 0xEE, 16); for (int idx = 0; idx < SZ; idx = idx + bytes_to_process) { // Limit length of last call to avoid exceeding buffer size size_t length = ( (idx + bytes_to_process) > SZ) ? (SZ - idx) : bytes_to_process; mbedtls_aes_crypt_cfb8(&ctx, MBEDTLS_AES_DECRYPT, length, iv, chipertext + idx, decryptedtext + idx); } TEST_ASSERT_EQUAL_HEX8_ARRAY(plaintext, decryptedtext, SZ); } mbedtls_aes_free(&ctx); free(plaintext); free(chipertext); free(decryptedtext); } TEST_CASE("mbedtls CFB128 stream test", "[aes]") { const unsigned SZ = 32; mbedtls_aes_context ctx; uint8_t iv[16]; uint8_t key[16]; /* Cipher produced via this Python: import os, binascii from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes from cryptography.hazmat.backends import default_backend key = b'\x44' * 16 iv = b'\xee' * 16 cipher = Cipher(algorithms.AES(key), modes.CFB(iv), backend=default_backend()) encryptor = cipher.encryptor() ct = encryptor.update(b'\xaa' * 100) + encryptor.finalize() ct_arr = "" for idx, b in enumerate(ct): if idx % 8 == 0: ct_arr += '\n' ct_arr += "0x{}, ".format(binascii.hexlify(b)) print(ct_arr) */ const uint8_t expected_cipher[] = { 0xc5, 0x78, 0xa7, 0xb4, 0xf3, 0xb9, 0xcb, 0x8b, 0x09, 0xe0, 0xd6, 0x89, 0x14, 0x6a, 0x19, 0x09, 0xf9, 0x08, 0x7e, 0xe1, 0x92, 0x8a, 0x7c, 0xa4, 0x25, 0xa5, 0xa7, 0x43, 0x24, 0x8d, 0x85, 0x3e, 0x99, 0x28, 0xeb, 0x36, 0x59, 0x74, 0x69, 0x0e, 0x09, 0x9f, 0x4e, 0xc0, 0x6d, 0xc3, 0x2b, 0x80, 0x01, 0xad, 0xa1, 0x0c, 0x99, 0x90, 0x8b, 0x07, 0xd6, 0x00, 0xf0, 0x32, 0xd7, 0x6b, 0xa1, 0xf1, 0x4d, 0x14, 0xd0, 0x28, 0xde, 0x64, 0x23, 0x71, 0xf4, 0x23, 0x61, 0x12, 0x71, 0xbe, 0x03, 0x74, 0x99, 0x81, 0x9d, 0x65, 0x48, 0xd9, 0xd4, 0x67, 0xd1, 0x31, 0xe8, 0x44, 0x27, 0x17, 0xd4, 0x2d, 0x3d, 0x59, 0xf7, 0xd3, }; memset(key, 0x44, 16); // allocate internal memory uint8_t *chipertext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); uint8_t *plaintext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(chipertext); TEST_ASSERT_NOT_NULL(plaintext); TEST_ASSERT_NOT_NULL(decryptedtext); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key, 128); memset(plaintext, 0xAA, SZ); /* Test that all the end results are the same no matter how many bytes we encrypt each call */ //for (int bytes_to_process = 1; bytes_to_process < SZ; bytes_to_process++) { int bytes_to_process = 17; size_t offset = 0; memset(iv, 0xEE, 16); for (int idx = 0; idx < SZ; idx = idx + bytes_to_process) { // Limit length of last call to avoid exceeding buffer size size_t length = ( (idx + bytes_to_process) > SZ) ? (SZ - idx) : bytes_to_process; mbedtls_aes_crypt_cfb128(&ctx, MBEDTLS_AES_ENCRYPT, length, &offset, iv, plaintext + idx, chipertext + idx); } TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher, chipertext, SZ); offset = 0; memset(iv, 0xEE, 16); for (int idx = 0; idx < SZ; idx = idx + bytes_to_process) { // Limit length of last call to avoid exceeding buffer size size_t length = ( (idx + bytes_to_process) > SZ) ? (SZ - idx) : bytes_to_process; mbedtls_aes_crypt_cfb128(&ctx, MBEDTLS_AES_DECRYPT, length, &offset, iv, chipertext + idx, decryptedtext + idx); } TEST_ASSERT_EQUAL_HEX8_ARRAY(plaintext, decryptedtext, SZ); mbedtls_aes_free(&ctx); free(plaintext); free(chipertext); free(decryptedtext); } /* Cipher produced via this Python: import os, binascii from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes from cryptography.hazmat.backends import default_backend key = b'\x44' * 16 nonce = b'\xee' * 16 cipher = Cipher(algorithms.AES(key), modes.CTR(nonce), backend=default_backend()) encryptor = cipher.encryptor() ct = encryptor.update(b'\xaa' * 100) + encryptor.finalize() ct_arr = "" for idx, b in enumerate(ct): if idx % 8 == 0: ct_arr += '\n' ct_arr += "0x{}, ".format(binascii.hexlify(b)) print(ct_arr) */ /* Test the case where the input and output buffers point to the same location */ TEST_CASE("mbedtls CTR, input buf = output buf", "[aes]") { const unsigned SZ = 1000; mbedtls_aes_context ctx; uint8_t nonce[16]; uint8_t stream_block[16]; size_t nc_off = 0; const uint8_t expected_cipher_end[] = { 0xd4, 0xdc, 0x4f, 0x8f, 0xfe, 0x86, 0xee, 0xb5, 0x14, 0x7f, 0xba, 0x30, 0x25, 0xa6, 0x7f, 0x6c, 0xb5, 0x73, 0xaf, 0x90, 0xd7, 0xff, 0x36, 0xba, 0x2b, 0x1d, 0xec, 0xb9, 0x38, 0xfa, 0x0d, 0xeb, }; memcpy(nonce, iv, 16); // allocate internal memory uint8_t *buf = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(buf); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key_256, 256); memset(buf, 0x3A, SZ); // Encrypt mbedtls_aes_crypt_ctr(&ctx, SZ, &nc_off, nonce, stream_block, buf, buf); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher_end, buf + SZ - 32, 32); // Decrypt nc_off = 0; memcpy(nonce, iv, 16); mbedtls_aes_crypt_ctr(&ctx, SZ, &nc_off, nonce, stream_block, buf, buf); for (int i = 0; i < SZ; i++) { TEST_ASSERT_EQUAL_HEX8(0x3A, buf[i]); } mbedtls_aes_free(&ctx); free(buf); } TEST_CASE("mbedtls OFB, chained DMA descriptors", "[aes]") { // Max bytes in a single DMA descriptor is 4095 const unsigned SZ = 6000; mbedtls_aes_context ctx; uint8_t nonce[16]; size_t nc_off = 0; const uint8_t expected_cipher_end[] = { 0xfe, 0xfa, 0xc9, 0x26, 0xb5, 0xc9, 0xea, 0xb0, 0xdd, 0x1e, 0xe7, 0x0e, 0xfa, 0x5b, 0x4b, 0x94, 0xaa, 0x5f, 0x60, 0x1e, 0xb2, 0x19, 0x3c, 0x2e, 0xf6, 0x73, 0x56, 0x9f, 0xa7, 0xd5, 0xb7, 0x21, }; memcpy(nonce, iv, 16); // allocate internal memory uint8_t *chipertext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); uint8_t *plaintext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT|MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(chipertext); TEST_ASSERT_NOT_NULL(plaintext); TEST_ASSERT_NOT_NULL(decryptedtext); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key_256, 256); memset(plaintext, 0x3A, SZ); memset(decryptedtext, 0x0, SZ); // Encrypt mbedtls_aes_crypt_ofb(&ctx, SZ, &nc_off, nonce, plaintext, chipertext); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher_end, chipertext + SZ - 32, 32); // Decrypt nc_off = 0; memcpy(nonce, iv, 16); mbedtls_aes_crypt_ofb(&ctx, SZ, &nc_off, nonce, chipertext, decryptedtext); TEST_ASSERT_EQUAL_HEX8_ARRAY(plaintext, decryptedtext, SZ); mbedtls_aes_free(&ctx); free(plaintext); free(chipertext); free(decryptedtext); } #ifdef CONFIG_SPIRAM_USE_MALLOC const uint8_t expected_cipher_psram_end[] = { 0x7e, 0xdf, 0x13, 0xf3, 0x56, 0xef, 0x67, 0x01, 0xfc, 0x08, 0x49, 0x62, 0xfa, 0xfe, 0x0c, 0x8b, 0x99, 0x39, 0x09, 0x51, 0x2c, 0x9a, 0xd5, 0x48, 0x4f, 0x76, 0xa2, 0x19, 0x2c, 0x08, 0x9d, 0x6a, }; void aes_psram_ctr_test(uint32_t input_buf_caps, uint32_t output_buf_caps) { mbedtls_aes_context ctx; uint8_t nonce[16]; uint8_t key[16]; uint8_t stream_block[16]; size_t SZ = 6000; size_t ALIGNMENT_SIZE_BYTES = 16; memset(nonce, 0x2F, 16); memset(key, 0x1E, 16); // allocate memory according the requested caps uint8_t *chipertext = heap_caps_malloc(SZ + ALIGNMENT_SIZE_BYTES, output_buf_caps); uint8_t *plaintext = heap_caps_malloc(SZ + ALIGNMENT_SIZE_BYTES, input_buf_caps); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(chipertext); TEST_ASSERT_NOT_NULL(plaintext); TEST_ASSERT_NOT_NULL(decryptedtext); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key, 128); memset(plaintext, 0x26, SZ + ALIGNMENT_SIZE_BYTES); size_t offset; /* Shift buffers and test for all different misalignments */ for (int i = 0; i < ALIGNMENT_SIZE_BYTES; i++ ) { // Encrypt with input buffer in external ram offset = 0; memset(nonce, 0x2F, 16); mbedtls_aes_crypt_ctr(&ctx, SZ, &offset, nonce, stream_block, plaintext + i, chipertext + i); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher_psram_end, chipertext + i + SZ - 32, 32); // Decrypt offset = 0; memset(nonce, 0x2F, 16); // Decrypt with input buffer in instruction memory, the crypto DMA can't access this mbedtls_aes_crypt_ctr(&ctx, SZ, &offset, nonce, stream_block, chipertext + i, decryptedtext); TEST_ASSERT_EQUAL_HEX8_ARRAY(plaintext, decryptedtext, SZ); } mbedtls_aes_free(&ctx); free(plaintext); free(chipertext); free(decryptedtext); } void aes_psram_one_buf_ctr_test(void) { mbedtls_aes_context ctx; uint8_t nonce[16]; uint8_t key[16]; uint8_t stream_block[16]; size_t SZ = 6000; size_t ALIGNMENT_SIZE_BYTES = 16; memset(nonce, 0x2F, 16); memset(key, 0x1E, 16); // allocate external memory uint8_t *buf = heap_caps_malloc(SZ + ALIGNMENT_SIZE_BYTES, MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM); TEST_ASSERT_NOT_NULL(buf); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key, 128); memset(buf, 0x26, SZ + ALIGNMENT_SIZE_BYTES); size_t offset; /* Shift buffers and test for all different misalignments */ for (int i = 0; i < ALIGNMENT_SIZE_BYTES; i++ ) { // Encrypt with input buffer in external ram offset = 0; memset(buf, 0x26, SZ + ALIGNMENT_SIZE_BYTES); memset(nonce, 0x2F, 16); mbedtls_aes_crypt_ctr(&ctx, SZ, &offset, nonce, stream_block, buf + i, buf + i); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher_psram_end, buf + i + SZ - 32, 32); // Decrypt offset = 0; memset(nonce, 0x2F, 16); // Decrypt with input buffer in instruction memory, the crypto DMA can't access this mbedtls_aes_crypt_ctr(&ctx, SZ, &offset, nonce, stream_block, buf + i, buf); TEST_ASSERT_EACH_EQUAL_HEX8(0x26, buf + i, SZ - i); } mbedtls_aes_free(&ctx); free(buf); } const uint8_t long_input[] = { 0xf7, 0xe6, 0x6b, 0x8d, 0x2e, 0xbf, 0x88, 0xd6, 0xb0, 0x77, 0xdf, 0x72, 0xbf, 0xa8, 0x0, 0x55, 0xd5, 0xd1, 0x49, 0xa3, 0x2c, 0xc, 0xfe, 0xdb, 0x17, 0x37, 0xa4, 0x1d, 0x70, 0x6b, 0x99, 0xf5, 0x9e, 0x6, 0xad, 0x6c, 0xe0, 0x3b, 0xfa, 0x50, 0x28, 0xb2, 0x62, 0xf2, 0x99, 0x3a, 0xcc, 0xe4, 0x86, 0x5f, 0x1, 0xf8, 0x69, 0xd7, 0xf5, 0xb2, 0x8a, 0x5f, 0x5c, 0x38, 0x9f, 0x8a, 0xb8, 0x8c, 0xea, 0x6, 0xe1, 0x68, 0xff, 0xaf, 0x5d, 0xd9, 0x1f, 0xa5, 0x5c, 0x8c, 0x52, 0xa1, 0x5f, 0x45, 0x55, 0xcb, 0x76, 0x59, 0x8f, 0xfe, 0x36, 0xd0, 0x85, 0x1f, 0x8, 0x90, 0x6f, 0x62, 0xb1, 0x1a, 0xde, 0x75, 0xab, 0x90, 0xb7, 0x75, 0xe9, 0xa0, 0xa9, 0xb0, 0xac, 0x61, 0x5, 0x6d, 0x9a, 0xe3, 0x3b, 0x43, 0x61, 0x13, 0x8c, 0x3a, 0xa0, 0xaa, 0x91, 0xea, 0x3e, 0xe1, 0x87, 0x35, 0xff, 0x90, 0xe2, 0x43, 0xa3, 0x70, 0x57, 0x65, 0x2d, 0xa2, 0x65, 0xe6, 0xde, 0xb0, 0x52, 0x85, 0x5b, 0xb8, 0x3, 0x8, 0x63, 0x8b, 0xa1, 0xc2, 0xe1, 0x35, 0x2e, 0xba, 0xe0, 0x84, 0x56, 0x52, 0x5f, 0x12, 0xd3, 0x22, 0x8d, 0xa5, 0xbb, 0xe1, 0xd3, 0xfc, 0x18, 0x1c, 0x90, 0x3b, 0x79, 0xe, 0xab, 0x2d, 0x5e, 0xb0, 0x7, 0xbb, 0x46, 0x73, 0x1d, 0x35, 0xd9, 0xc5, 0xa7, 0x87, 0x80, 0xf7, 0xee, 0x29, 0xb5, 0x17, 0xf3, 0xaf, 0x30, 0xe5, 0x19, 0x50, 0xf9, 0x5d, 0x2b, 0xc3, 0xc0, 0xda, 0x8f, 0xca, 0x3c, 0x4d, 0xd5, 0xd7, 0x6c, 0xd2, 0x36, 0xa4, 0x22, 0x8, 0x66, 0x48, 0x31, 0xb4, 0x3d, 0xc2, 0xf6, 0x6b, 0xce, 0xf0, 0x12, 0xe4, 0x38, 0x5c, 0xd8, 0x71, 0xea, 0x30, 0x52, 0xdf, 0x34, 0x62, 0xdc, 0xb4, 0x30, 0xe, 0x74, 0xc, 0x5, 0x14, 0xf, 0x47, 0x25, 0x5, 0x72, 0xc9, 0x14, 0x7c, 0x1f, 0x6e, 0xdb, 0x6f, 0x83, 0x6, 0xa0, 0xb2, 0x7f, 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0x74, 0xa0, 0x37, 0xa9, 0x5b, 0x6c, 0x7c, 0x9b, 0x61, 0x94, 0x88, 0xf7, 0x40, 0x84, 0x75, 0xa5, 0x50, 0xab, 0xb0, 0x92, 0x66, 0x10, 0x66, 0xf6, 0xec, 0x6b, 0x5e, 0x31, 0x9b, 0xc4, 0xfa, 0x95, 0x8b, 0xe7, 0xd4, 0xba, 0x81, 0xd2, 0x85, 0x30, 0x4, 0x8b, 0x3d, 0xfa, 0x8a, 0x8f, 0x9b, 0x54, 0x6a, 0x4d, 0x35, 0xa2, 0xe9, 0x58, 0x95, 0xe3, 0xd1, 0x71, 0xcd, 0x3a, 0x54, 0xae, 0xd9, 0x5c, 0x83, 0xd, 0x15, 0x64, 0x66, 0xee, 0x39, 0xa1, 0x85, 0xe2, 0x28, 0xf5, 0x66, 0x5f, 0xec, 0x39, 0x70, 0x96, 0x2c, 0x72, 0x9e, 0x57, 0xfd, 0x57, 0x27, 0xb7, 0xda, 0x79, 0x39, 0xd8, 0x3b, 0x2e, 0xa3, 0xb0, 0xde, 0xbf, 0x60, 0xb6, 0x42, 0x78, 0x9d, 0x8f, 0xe8, 0x1c, 0x7c, 0x45, 0x72, 0x3, 0xc4, 0xd5, 0x81, 0xf6, 0xe6, 0x9, 0x29, 0x1e, 0xcd, 0xf3, 0xe, 0xd6, 0x65, 0xee, 0x6d, 0x90, 0x17, 0x95, 0x20, 0x54, 0xf1, 0xd, 0x2f, 0xa0, 0xac, 0xe3, 0x4b, 0xfc, 0xa4, 0xdc, 0xab, 0x9d, 0x9e, 0x32, 0x63, 0x72, 0xd1, 0xb4, 0xef, 0xf1, 0x83, 0xa7, 0xd7, 0x2b, 0x1a, 0x9a, 0x9e, 0xfa, 0x1e, 0xb, 0x2b, 0xdc, 0x7b, 0x87, 0x96, 0xf, 0xdb, 0x75, 0xb9, 0x6, 0x2b, 0xd3, 0x95, 0xc5, 0xb3, 0x9, 0x53, 0x94, 0x54, 0x1f, 0xd0, 0x75, 0x5a, 0x36, 0x6a, 0x7c, 0x82, 0xdb, 0xb1, 0xa2, 0x17, 0xbc, 0xeb, 0x1f, 0xfa, 0x34, 0x3d, 0xee, 0x68, 0xee, 0x93, 0x33, 0xfb, 0xcb, 0xd2, 0xa3, 0xd1, 0x24, 0x5e, 0xf4, 0x9, 0xbe, 0x5a, 0x68, 0x9e, 0x3e, 0xd4, 0x81, 0xcd, 0xa3, 0x1e, 0x2, 0x13, 0xb4, 0x79, 0x94, 0xc9, 0xb2, 0xde, 0x56, 0xf1, 0x7b, 0x2f, 0xe2, 0x56, 0xe1, 0x10, 0xf4, 0x73, 0x2d, 0xc9, 0xca, 0x4d, 0x5f, 0x11, 0x9e, 0xd6, 0x3c, 0x73, 0x12, 0x57, 0xe9, 0x14, 0xe0, 0x8d, 0xdd, 0x4b, 0x8a, 0xbb, 0xb3, 0x78, 0xbe, 0x16, 0x94, 0x93, 0x51, 0x33, 0x7a, 0xa5, 0x41, 0x14, 0x60, 0x82, 0x94, 0x67, 0x70, 0xea, 0xe6, 0x3, 0x7f, 0xc5, 0xa0, 0x20, 0x15, 0x88, 0x53, 0xe3, 0x7e, 0x16, 0x52, 0xe4, 0xca, 0xa0, 0x6f, 0xb9, 0x68, 0x4e, 0x30, 0xb9, 0x8c, 0xe6, 0x9c, 0x5e, 0xc2, 0x93, 0xf9, 0xe1, 0x41, 0x4b, 0x18, 0x42, 0x6f, 0x8f, 0x96, 0x3d, 0x2b, 0x28, 0xd5, 0x53, 0x62, 0xdd, 0x6b, 0xd0, 0xf8, 0x2e, 0xa6, 0x97, 0xe5, 0x87, 0xc5, 0xf6, 0x96, 0x7b, 0xc4, 0x3e, 0x84, 0xc9, 0xf6, 0x34, 0x63, 0x46, 0xe1, 0x10, 0xa5, 0x91, 0x6b, 0xff, 0x10, 0x3f, 0x50, 0x2e, 0xd7, 0x39, 0x12, 0x7a, 0x15, 0x85, 0xed, 0x99, 0xdb, 0x9b, 0x99, 0x6b, 0xfa, 0xfa, 0x93, 0x7, 0x44, 0xbe, 0xbe, 0x60, 0x23, 0xc1, 0xec, 0x5c, 0xf6, 0x93, 0x38, 0xf9, 0x89, 0x0, 0xc5, 0x5f, 0x5b, 0xe2, 0x9d, 0x2b, 0xea, 0x6b, 0x2e, 0xee, 0xb7, 0x4a, 0x4e, 0x8d, 0xd0, 0x35, 0xe9, 0xc1, 0x5, 0x2b, 0x83, 0xb7, 0x72, 0x25, 0xbb, 0xbe, 0xe8, 0x15, 0xf4, 0x74, 0x69, 0x69, 0x67, 0x8c, 0x5c, 0x31, 0x79, 0x78, 0x2e, 0x43, 0x83, 0xd1, 0xdd, 0x9, 0xc3, 0xa1, 0x0, 0x13, 0x31, 0x4b, 0x86, 0xce, 0xee, 0xd7, 0xec, 0xb1, 0x2c, 0x38, 0x46, 0x68, 0x62, 0xd9, 0x84, 0xdb, 0x24, 0x62, 0x82, 0xc, 0x12, 0xb7, 0x4f, 0x86, 0x54, 0x18, 0xc6, 0xd7, 0x94, 0x8b, 0xf2, 0x4c, 0x17, 0x98, 0xaa, 0xe0, }; const uint8_t expected_cipher_long_input_end[] = { 0x05, 0x95, 0x58, 0x7b, 0xb4, 0x60, 0x15, 0x32, 0x9f, 0x38, 0xcc, 0x98, 0x1b, 0xbe, 0x10, 0xa5, 0x06, 0x67, 0xae, 0x38, 0xbd, 0x7d, 0xb5, 0xcd, 0x58, 0x32, 0xdd, 0x9e, 0x6a, 0xde, 0xe3, 0x53, }; void aes_ext_flash_ctr_test(uint32_t output_buf_caps) { mbedtls_aes_context ctx; uint8_t nonce[16]; uint8_t key[16]; uint8_t stream_block[16]; size_t SZ = sizeof(long_input); memset(nonce, 0x2F, 16); memset(key, 0x1E, 16); uint8_t *chipertext = heap_caps_malloc(SZ, output_buf_caps); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT | MALLOC_CAP_DMA | MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(chipertext); TEST_ASSERT_NOT_NULL(decryptedtext); mbedtls_aes_init(&ctx); mbedtls_aes_setkey_enc(&ctx, key, 128); size_t offset; // Encrypt with input buffer in external flash offset = 0; memset(nonce, 0x2F, 16); mbedtls_aes_crypt_ctr(&ctx, SZ, &offset, nonce, stream_block, long_input, chipertext); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher_long_input_end, chipertext + SZ - 32, 32); // Decrypt offset = 0; memset(nonce, 0x2F, 16); // Decrypt with input buffer in external flash, the crypto DMA can't access this mbedtls_aes_crypt_ctr(&ctx, SZ, &offset, nonce, stream_block, chipertext, decryptedtext); TEST_ASSERT_EQUAL_HEX8_ARRAY(long_input, decryptedtext, SZ); mbedtls_aes_free(&ctx); free(chipertext); free(decryptedtext); } /* Tests how crypto DMA handles data in external memory */ TEST_CASE("mbedtls AES PSRAM tests", "[aes]") { aes_psram_ctr_test(MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL, MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM); aes_psram_ctr_test(MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); aes_psram_ctr_test(MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM, MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM); aes_psram_one_buf_ctr_test(); } /* Tests how crypto DMA handles data from external flash */ TEST_CASE("mbedtls AES external flash tests", "[aes]") { aes_ext_flash_ctr_test(MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM); aes_ext_flash_ctr_test(MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); } #endif // CONFIG_SPIRAM_USE_MALLOC