/* 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" 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_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, 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); } free(plaintext); free(chipertext); free(decryptedtext); } TEST_CASE("mbedtls GCM stream test", "[aes]") { const unsigned SZ = 100; mbedtls_gcm_context ctx; uint8_t nonce[16]; uint8_t key[16]; uint8_t tag[16]; mbedtls_cipher_id_t cipher = MBEDTLS_CIPHER_ID_AES; /* Cipher produced via this Python: import os, binascii from cryptography.hazmat.primitives.ciphers.aead import AESGCM key = b'\x56' * 16 iv = b'\x89' * 16 data = b'\xab' * 100 aesgcm = AESGCM(key) ct = aesgcm.encrypt(iv, data, '') 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[] = { 0x03, 0x92, 0x13, 0x49, 0x1f, 0x1f, 0x24, 0x41, 0xe8, 0xeb, 0x89, 0x47, 0x50, 0x0a, 0xce, 0xa3, 0xc7, 0x1c, 0x10, 0x70, 0xb0, 0x89, 0x82, 0x5e, 0x0f, 0x4a, 0x23, 0xee, 0xd2, 0xfc, 0xff, 0x45, 0x61, 0x4c, 0xd1, 0xfb, 0x6d, 0xe2, 0xbe, 0x67, 0x6f, 0x94, 0x72, 0xa3, 0xe7, 0x04, 0x99, 0xb3, 0x4a, 0x46, 0xf9, 0x2b, 0xaf, 0xac, 0xa9, 0x0e, 0x43, 0x7e, 0x8b, 0xc4, 0xbf, 0x49, 0xa4, 0x83, 0x9c, 0x31, 0x11, 0x1c, 0x09, 0xac, 0x90, 0xdf, 0x00, 0x34, 0x08, 0xe5, 0x70, 0xa3, 0x7e, 0x4b, 0x36, 0x48, 0x5a, 0x3f, 0x28, 0xc7, 0x1c, 0xd9, 0x1b, 0x1b, 0x49, 0x96, 0xe9, 0x7c, 0xea, 0x54, 0x7c, 0x71, 0x29, 0x0d }; const uint8_t expected_tag[] = { 0x35, 0x1c, 0x21, 0xc6, 0xbc, 0x6b, 0x18, 0x52, 0x90, 0xe1, 0xf2, 0x5b, 0xe1, 0xf6, 0x15, 0xee, }; memset(nonce, 0x89, 16); memset(key, 0x56, 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); memset(plaintext, 0xAB, SZ); /* Test that all the end results are the same no matter how many bytes we encrypt each call */ for (int bytes_to_process = 16; bytes_to_process < SZ; bytes_to_process = bytes_to_process + 16) { memset(nonce, 0x89, 16); memset(chipertext, 0x0, SZ); memset(decryptedtext, 0x0, SZ); memset(tag, 0x0, 16); mbedtls_gcm_init(&ctx); mbedtls_gcm_setkey(&ctx, cipher, key, 128); mbedtls_gcm_starts( &ctx, MBEDTLS_AES_ENCRYPT, nonce, sizeof(nonce), NULL, 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_gcm_update(&ctx, length, plaintext + idx, chipertext + idx ); } mbedtls_gcm_finish( &ctx, tag, sizeof(tag) ); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher, chipertext, SZ); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_tag, tag, sizeof(tag)); // Decrypt memset(nonce, 0x89, 16); mbedtls_gcm_free( &ctx ); mbedtls_gcm_init(&ctx); mbedtls_gcm_setkey(&ctx, cipher, key, 128); mbedtls_gcm_starts( &ctx, MBEDTLS_AES_DECRYPT, nonce, sizeof(nonce), NULL, 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_gcm_update(&ctx, length, chipertext + idx, decryptedtext + idx ); } mbedtls_gcm_finish( &ctx, tag, sizeof(tag) ); TEST_ASSERT_EQUAL_HEX8_ARRAY(plaintext, decryptedtext, SZ); mbedtls_gcm_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_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, 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); } 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_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, 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); } 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_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, 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); 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) */ #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_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); } 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); } 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, 0x29, 0xe6, 0xb6, 0xe3, 0x11, 0x23, 0x4b, 0x68, 0x92, 0xa, 0x49, 0xb5, 0x9d, 0x5d, 0x39, 0x90, 0xff, 0x9, 0xa0, 0xa, 0x69, 0x6b, 0x2, 0x18, 0xfb, 0xca, 0x5a, 0x91, 0x1a, 0xd9, 0x19, 0x6b, 0xd4, 0x92, 0xd3, 0xd9, 0x7, 0xce, 0xcb, 0xc7, 0xf3, 0xa1, 0x33, 0xcd, 0xa9, 0xb1, 0x44, 0x8c, 0x93, 0xcd, 0xac, 0xc1, 0x44, 0x12, 0x48, 0x95, 0x3, 0xdf, 0xc, 0x2f, 0xfc, 0x34, 0x8d, 0x3, 0xde, 0xc1, 0xed, 0xdc, 0xf0, 0xfa, 0xa5, 0xb2, 0x62, 0xcd, 0xa2, 0xbf, 0xf7, 0x7e, 0x47, 0xb6, 0xcc, 0xe4, 0xa6, 0x4e, 0x51, 0xc6, 0x34, 0xee, 0x83, 0x21, 0xb7, 0xc2, 0xe3, 0x13, 0x92, 0xfc, 0xc9, 0x6, 0x6b, 0x91, 0x76, 0x7b, 0x2e, 0x1e, 0xa2, 0xe0, 0x17, 0xab, 0x10, 0xfa, 0xac, 0xd1, 0x2, 0x33, 0xb0, 0xd3, 0x3d, 0xb9, 0xce, 0xea, 0xe9, 0x93, 0x5c, 0x98, 0x14, 0x0, 0xc6, 0x2c, 0xa6, 0xdb, 0x1f, 0xdc, 0x76, 0xfb, 0xeb, 0x9d, 0x55, 0xa6, 0x5f, 0xd5, 0x8e, 0x13, 0x39, 0x88, 0x58, 0xff, 0xe8, 0xb4, 0x98, 0x9e, 0x4b, 0xe7, 0x46, 0xdc, 0x7a, 0x68, 0x5b, 0xa8, 0xc2, 0xe5, 0xa9, 0x50, 0xe2, 0x8, 0x31, 0x6, 0x3e, 0x8e, 0xaf, 0x80, 0x24, 0x4e, 0xbd, 0x73, 0x6d, 0xd9, 0x4b, 0xb4, 0x3e, 0x84, 0x5e, 0x31, 0x8e, 0xf7, 0xa8, 0x9b, 0x5e, 0x2c, 0xd5, 0xe9, 0x7c, 0xca, 0xca, 0xfa, 0x8e, 0x87, 0xbf, 0xf5, 0xa3, 0x2f, 0x73, 0x2f, 0xc0, 0x5f, 0x46, 0xf4, 0x2, 0xfd, 0xd1, 0x23, 0x6f, 0xc2, 0xc1, 0xc0, 0x86, 0x62, 0x43, 0xc3, 0x44, 0x3b, 0x2c, 0x3d, 0xc2, 0xd5, 0xe0, 0x2, 0xae, 0x1, 0x5a, 0x9, 0x89, 0x52, 0x34, 0xdf, 0xb1, 0x6c, 0x2b, 0x85, 0x77, 0xa5, 0x83, 0xe3, 0xa5, 0x50, 0x13, 0x2f, 0xf3, 0xa6, 0x83, 0x60, 0x33, 0xba, 0xd5, 0xd2, 0x96, 0x8a, 0xcd, 0xee, 0xfa, 0x76, 0x2a, 0x63, 0xec, 0x41, 0x3a, 0xf3, 0xe5, 0x9e, 0x1d, 0x5e, 0x46, 0x8, 0xd7, 0xe2, 0x3a, 0x25, 0x6f, 0x37, 0x7e, 0x0, 0x2d, 0x3d, 0x1b, 0x86, 0xf4, 0xbe, 0x0, 0x3c, 0xda, 0x82, 0x4a, 0xa3, 0x8, 0x2a, 0x38, 0x95, 0xe, 0x38, 0xf8, 0x18, 0x6c, 0x42, 0x6f, 0x30, 0x19, 0x8e, 0x22, 0xf6, 0xb7, 0x18, 0xb7, 0x93, 0xd, 0x54, 0x72, 0x4, 0x64, 0xc1, 0x19, 0x76, 0x6e, 0xfc, 0x9e, 0xb0, 0x7c, 0x20, 0x37, 0xb0, 0xcb, 0x82, 0x3a, 0x20, 0x1d, 0x12, 0x44, 0xbf, 0x44, 0xc4, 0x4d, 0x33, 0x7e, 0x7b, 0xeb, 0xd8, 0xb8, 0xa1, 0x75, 0x9e, 0x47, 0x99, 0x64, 0x92, 0xd3, 0x21, 0x1d, 0x72, 0x63, 0xc7, 0xb3, 0x3d, 0xfc, 0xb9, 0x4, 0x65, 0x18, 0x94, 0xcc, 0x20, 0xfe, 0x6f, 0x66, 0x36, 0xba, 0x36, 0x2a, 0x7, 0xf0, 0x5e, 0x8a, 0xf2, 0x7, 0x1e, 0x9e, 0x47, 0x2a, 0xc3, 0x7d, 0x7a, 0x20, 0x3c, 0x30, 0x6f, 0xbe, 0x43, 0x5e, 0x71, 0x6f, 0xd, 0xb8, 0x3d, 0x1d, 0x3e, 0x18, 0x65, 0x62, 0x75, 0xe8, 0x34, 0xfd, 0x72, 0xbb, 0xd9, 0x3f, 0xf0, 0xa2, 0x55, 0xee, 0x91, 0x12, 0x88, 0xda, 0x7, 0x3d, 0x44, 0x88, 0x70, 0x1f, 0xe0, 0xbe, 0x4b, 0x88, 0xa8, 0x8e, 0x28, 0x7, 0x73, 0xfd, 0x3f, 0xff, 0x3e, 0xb2, 0xb5, 0xdb, 0x18, 0x48, 0x9e, 0x73, 0x6e, 0xd7, 0x24, 0xa9, 0x25, 0xdb, 0x4, 0xe0, 0xe0, 0xf4, 0x45, 0xc0, 0x1b, 0x82, 0xdf, 0x4e, 0x48, 0x60, 0x85, 0x9c, 0xd8, 0x90, 0x32, 0xca, 0x4b, 0xf9, 0xb4, 0xb8, 0xe1, 0xfe, 0xd2, 0xe0, 0xb2, 0xd6, 0xb8, 0x19, 0x38, 0x34, 0x17, 0x8d, 0x5e, 0xdf, 0xf4, 0xf1, 0xac, 0x2c, 0x88, 0x7f, 0x54, 0xbc, 0xf1, 0x39, 0xf2, 0xaf, 0x5a, 0xff, 0xa7, 0x96, 0x0, 0xf0, 0x27, 0x79, 0x27, 0x2e, 0x9c, 0xf1, 0x4b, 0xa3, 0xad, 0xdc, 0x8a, 0x2c, 0x9, 0x4c, 0xd3, 0xcd, 0xd0, 0x2d, 0xb1, 0xec, 0x4d, 0x68, 0x40, 0xb8, 0xc5, 0x5, 0xfa, 0xb2, 0x61, 0xb8, 0x31, 0x5, 0xea, 0xb8, 0xa3, 0x34, 0xa8, 0x8b, 0x3, 0x5b, 0x22, 0x93, 0xba, 0x91, 0x33, 0x3f, 0x8b, 0x5e, 0xed, 0x86, 0x23, 0x95, 0xbc, 0x9e, 0xdf, 0xa9, 0x8c, 0xca, 0xb9, 0x97, 0x9b, 0xc5, 0xca, 0xf4, 0xff, 0x4d, 0x62, 0x52, 0x1c, 0xd3, 0x4c, 0x42, 0xbf, 0x8a, 0x25, 0x47, 0xc7, 0x9, 0x4e, 0xe0, 0xb1, 0x72, 0x7d, 0x2, 0x8f, 0xca, 0x4f, 0x4, 0xc8, 0x74, 0x82, 0x8e, 0x53, 0xfd, 0xa1, 0x37, 0xda, 0x29, 0x5c, 0xa3, 0x83, 0xe9, 0xa8, 0xd8, 0x25, 0x27, 0xfe, 0xf7, 0x41, 0xc4, 0xb0, 0xee, 0x1d, 0x89, 0x1c, 0xe7, 0xef, 0x86, 0x68, 0xd8, 0x87, 0x4c, 0x4f, 0x49, 0xeb, 0xbc, 0xb3, 0x81, 0xa7, 0xf4, 0xb4, 0x9b, 0xc1, 0x52, 0x93, 0x7e, 0xdf, 0x75, 0x75, 0xfc, 0x45, 0xb2, 0x86, 0xa9, 0x50, 0xb5, 0xa3, 0xf7, 0x61, 0x60, 0xe4, 0x13, 0x99, 0xc0, 0xf8, 0x49, 0x7b, 0x61, 0x8b, 0xa8, 0xfa, 0x77, 0x0, 0xe4, 0x6, 0x9a, 0xc5, 0x51, 0xe4, 0xeb, 0xaf, 0x5f, 0xb9, 0x5c, 0x74, 0xc8, 0xf8, 0x3e, 0x62, 0x26, 0xe, 0xe5, 0x85, 0xca, 0x49, 0xa0, 0x2f, 0xf7, 0x7, 0x99, 0x3e, 0x5c, 0xe0, 0x72, 0xfa, 0xd4, 0x80, 0x2e, 0xd6, 0x40, 0x6, 0xde, 0x5f, 0xc5, 0xc5, 0x1, 0xd, 0xbf, 0xdb, 0xb6, 0xb3, 0x92, 0x76, 0xb3, 0x3f, 0x3d, 0x5d, 0x1, 0x23, 0xb8, 0xa, 0xcb, 0x80, 0x17, 0x31, 0x19, 0xc7, 0x64, 0x69, 0xf1, 0x99, 0x53, 0xe5, 0xf2, 0x9f, 0x9d, 0x3c, 0xda, 0xcb, 0xa6, 0x94, 0x94, 0x44, 0xd3, 0xc6, 0x8b, 0xb5, 0xae, 0x45, 0x25, 0xef, 0x2a, 0x24, 0x1, 0x3a, 0xf6, 0xf, 0xe, 0xcb, 0x10, 0xc4, 0xe0, 0xf4, 0x3d, 0xf4, 0xf5, 0xea, 0x9b, 0xd1, 0x16, 0x1b, 0x62, 0x11, 0x3e, 0x20, 0x3a, 0x68, 0xc8, 0xf0, 0xe, 0x55, 0xbe, 0x51, 0x4d, 0xbe, 0x1f, 0x4f, 0xda, 0x84, 0xda, 0xc4, 0x9e, 0x24, 0xd7, 0x46, 0x82, 0x56, 0x4e, 0x61, 0x63, 0xda, 0x18, 0xea, 0xc6, 0xc3, 0x21, 0x89, 0x18, 0xe, 0x87, 0xb7, 0x91, 0xfe, 0x8d, 0xe, 0xac, 0x75, 0x58, 0xe5, 0x9f, 0x1f, 0x93, 0xa6, 0x49, 0x24, 0xa2, 0xc6, 0xe8, 0x9d, 0x9c, 0x6d, 0xc1, 0xf, 0xfc, 0xe3, 0x57, 0xd3, 0xc2, 0x10, 0x91, 0x9a, 0xa8, 0xaa, 0xd7, 0xf, 0xaa, 0x75, 0x90, 0x4a, 0x10, 0xef, 0xb6, 0xdd, 0x6c, 0xd5, 0x1a, 0xe3, 0xbb, 0xe0, 0x64, 0x44, 0xc, 0x59, 0xa1, 0xef, 0x3, 0x52, 0xac, 0xa4, 0x85, 0x3e, 0x40, 0xee, 0x5c, 0xef, 0xcf, 0xb1, 0xaa, 0x88, 0xe5, 0x56, 0xb8, 0xcd, 0x87, 0xc7, 0xc6, 0xd3, 0xb4, 0x85, 0x8f, 0x2a, 0xc9, 0xcd, 0x8a, 0x8b, 0x25, 0x12, 0x71, 0x76, 0xc9, 0xaa, 0x62, 0x75, 0x80, 0x6e, 0xa3, 0xf9, 0xa5, 0xfc, 0x90, 0xac, 0x28, 0x13, 0x82, 0xbb, 0x5d, 0xa6, 0x93, 0x47, 0xd4, 0xf, 0x3b, 0x19, 0xf6, 0x81, 0xdb, 0x55, 0xb0, 0x47, 0x75, 0x63, 0x93, 0xb4, 0xdd, 0xf0, 0xaf, 0xb7, 0x44, 0xcb, 0x7, 0x7b, 0x35, 0xc5, 0xe4, 0x45, 0xfe, 0xbb, 0x11, 0x1a, 0x90, 0x96, 0x3a, 0x7, 0x2a, 0xef, 0x9c, 0xc, 0xae, 0x38, 0x26, 0xef, 0xc2, 0xc3, 0x53, 0xfa, 0x54, 0xcf, 0x6f, 0xf7, 0xa, 0xea, 0x19, 0xa8, 0xf, 0xbd, 0xa7, 0x3f, 0xcd, 0x38, 0x2c, 0xf3, 0x97, 0xfb, 0xdb, 0xcb, 0xc5, 0x83, 0x80, 0x91, 0x3d, 0xc7, 0x29, 0x67, 0x16, 0xa5, 0xd1, 0x41, 0xd0, 0xa1, 0x9b, 0xde, 0x13, 0x83, 0x12, 0x36, 0x75, 0x81, 0x71, 0x6b, 0xbc, 0x72, 0xcb, 0x37, 0x4, 0x6, 0x7c, 0x3a, 0x22, 0x2b, 0xa, 0x11, 0xd3, 0x33, 0x8f, 0x3, 0x54, 0x8e, 0x79, 0xb6, 0x36, 0x93, 0x92, 0xb8, 0xf, 0x24, 0x4a, 0xd3, 0xd5, 0x27, 0x66, 0xd1, 0xde, 0xe3, 0xaa, 0x4b, 0x2a, 0xe9, 0x22, 0x9b, 0xbf, 0x6e, 0x9a, 0xf7, 0xa, 0x2f, 0x24, 0x13, 0xd5, 0xd5, 0xbb, 0xa3, 0xba, 0x8f, 0xfc, 0x28, 0xa8, 0xbe, 0xe6, 0x9f, 0xea, 0xed, 0xb1, 0xba, 0xaf, 0xf, 0x1c, 0x1e, 0x51, 0xf8, 0xd7, 0x1b, 0xa5, 0xa6, 0x63, 0x40, 0x6e, 0x3f, 0xa2, 0x57, 0x6f, 0x57, 0xe4, 0x27, 0xc2, 0x3c, 0x33, 0xc6, 0x9c, 0x24, 0xd0, 0x53, 0xc4, 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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_icache_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); // allocate internal memory uint8_t *chipertext = heap_caps_malloc(SZ, output_buf_caps); uint8_t *decryptedtext = heap_caps_malloc(SZ, MALLOC_CAP_8BIT | MALLOC_CAP_DMA); 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 ram 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 instruction memory, 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); 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_8BIT | MALLOC_CAP_INTERNAL, MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM); aes_psram_ctr_test(MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM, 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 iCache */ TEST_CASE("mbedtls AES iCache tests", "[aes]") { aes_icache_ctr_test(MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM); aes_icache_ctr_test(MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); } #endif // CONFIG_SPIRAM_USE_MALLOC TEST_CASE("mbedtls AES GCM self-tests", "[aes]") { TEST_ASSERT_FALSE_MESSAGE(mbedtls_gcm_self_test(1), "AES GCM self-test should pass."); } TEST_CASE("mbedtls AES GCM crypt-and-tag", "[aes]") { const unsigned CALL_SZ = 32 * 1024; mbedtls_gcm_context ctx; unsigned char tag_buf[16]; mbedtls_cipher_id_t cipher = MBEDTLS_CIPHER_ID_AES; uint8_t iv[16]; uint8_t key[16]; memset(iv, 0xEE, 16); memset(key, 0x44, 16); // allocate internal memory uint8_t *buf = heap_caps_malloc(CALL_SZ, MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL); TEST_ASSERT_NOT_NULL(buf); uint8_t aad[16]; memset(aad, 0x22, 16); mbedtls_gcm_init(&ctx); mbedtls_gcm_setkey( &ctx, cipher, key, 128); memset(buf, 0xAA, CALL_SZ); mbedtls_gcm_crypt_and_tag(&ctx, MBEDTLS_AES_ENCRYPT, CALL_SZ, iv, sizeof(iv), aad, sizeof(aad), buf, buf, 16, tag_buf); /* Sanity check: make sure the last ciphertext block matches what we expect to see. Last block and tag produced via this Python: import os, binascii from cryptography.hazmat.primitives.ciphers.aead import AESGCM key = b'\x44' * 16 iv = b'\xEE' * 16 data = b'\xAA' * 100 aad = b'\x22 * 16 aesgcm = AESGCM(key) ct = aesgcm.encrypt(iv, data, aad) */ const uint8_t expected_last_block[] = { 0x7d, 0x3d, 0x16, 0x84, 0xd0, 0xb4, 0x38, 0x30, 0xd1, 0x24, 0x6f, 0x7e, 0x9a, 0x9c, 0x81, 0x58, }; const uint8_t expected_tag[] = { 0x7e, 0x16, 0x04, 0x07, 0x4b, 0x7e, 0x6b, 0xf7, 0x5d, 0xce, 0x9e, 0x7d, 0x3f, 0x85, 0xc5, 0xa5, }; TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_last_block, buf + CALL_SZ - 16, 16); TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_tag, tag_buf, 16); memset(iv, 0xEE, 16); TEST_ASSERT_EQUAL(mbedtls_gcm_auth_decrypt(&ctx, CALL_SZ, iv, sizeof(iv), aad, sizeof(aad), expected_tag, sizeof(expected_tag), buf, buf), 0); TEST_ASSERT_EACH_EQUAL_HEX8(0xAA, buf, CALL_SZ); free(buf); }