esp-idf/components/mbedtls/test/test_aes.c

/*
 * SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Unlicense OR CC0-1.0
 */

/* mbedTLS AES test
*/
#include <string.h>
#include <stdio.h>
#include <stdbool.h>
#include <esp_system.h>
#include "mbedtls/aes.h"
#include "mbedtls/gcm.h"
#include "unity.h"
#include "sdkconfig.h"
#include "esp_log.h"
#include "esp_timer.h"
#include "esp_heap_caps.h"
#include "test_utils.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "soc/lldesc.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 CBC AES-256 DMA buffer align test", "[aes]")
{
#define ALIGN_DOWN(val, align) ((val) & ~((align) - 1))
    // Size is taken considering the maximum DMA buffer size
    const unsigned SZ = ALIGN_DOWN((2*LLDESC_MAX_NUM_PER_DESC), 16);
    mbedtls_aes_context ctx;
    uint8_t nonce[16];

    const uint8_t expected_cipher_end[] = {
        0x9e, 0xcb, 0x1d, 0x24, 0x01, 0xc8, 0x3f, 0xba,
        0xde, 0x76, 0xea, 0x9c, 0xf3, 0x64, 0x23, 0x19,
        0x8c, 0x67, 0xd4, 0x1a, 0xd1, 0xe0, 0xbf, 0xc3,
        0xd2, 0xb8, 0x40, 0x95, 0x89, 0x41, 0x09, 0xdb,
    };

    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);
}

static void aes_ctr_stream_test(void)
{
    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++) {
        ESP_LOGD("test", "bytes_to_process %d", 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 );
        }
        ESP_LOG_BUFFER_HEXDUMP("expected", expected_cipher, SZ, ESP_LOG_DEBUG);
        ESP_LOG_BUFFER_HEXDUMP("actual  ", chipertext, SZ, ESP_LOG_DEBUG);

        TEST_ASSERT_EQUAL_HEX8_ARRAY(expected_cipher, chipertext, SZ);

        // Decrypt
        memset(nonce, 0xEE, 16);
        memset(decryptedtext, 0x22, SZ);
        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 );
        }
        ESP_LOG_BUFFER_HEXDUMP("decrypted", decryptedtext, SZ, ESP_LOG_DEBUG);
        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]")
{
    aes_ctr_stream_test();
}


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++) {
        ESP_LOGD("test", "bytes_to_process %d", 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);
        memset(decryptedtext, 0x22, SZ);
        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);
}



const uint8_t expected_cipher_ctr_end[] = {
    0x93, 0xca, 0xe0, 0x44, 0x96, 0x6d, 0xcb, 0xb2,
    0xcf, 0x8a, 0x8d, 0x73, 0x8c, 0x6b, 0xfa, 0x4d,
    0xd6, 0xc4, 0x18, 0x49, 0xdd, 0xc6, 0xbf, 0xc2,
    0xb9, 0xf0, 0x09, 0x69, 0x45, 0x42, 0xc6, 0x05,
};


void aes_ctr_alignment_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 = 32*200;
    size_t ALIGNMENT_SIZE_BYTES = 64;
    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_ctr_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);
}

TEST_CASE("mbedtls AES internal mem alignment tests", "[aes]")
{
    uint32_t internal_dma_caps = MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL;
    aes_ctr_alignment_test(internal_dma_caps, internal_dma_caps);
}


#ifdef CONFIG_SPIRAM_USE_MALLOC

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 = 32*200;
    size_t ALIGNMENT_SIZE_BYTES = 32;
    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_ctr_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, 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,
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    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_ctr_alignment_test(MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL, MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM);
    aes_ctr_alignment_test(MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM, MALLOC_CAP_DMA | MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL);
    aes_ctr_alignment_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


#if CONFIG_ESP_SYSTEM_RTC_FAST_MEM_AS_HEAP_DEPCHECK

RTC_FAST_ATTR uint8_t rtc_stack[4096];
static xSemaphoreHandle done_sem;

static void aes_ctr_stream_test_task(void *pv)
{
    aes_ctr_stream_test();
    xSemaphoreGive(done_sem);
    vTaskDelete(NULL);
}

TEST_CASE("mbedtls AES stack in RTC RAM", "[mbedtls]")
{
    done_sem = xSemaphoreCreateBinary();
    static StaticTask_t rtc_task;
    memset(rtc_stack, 0, sizeof(rtc_stack));

    TEST_ASSERT(esp_ptr_in_rtc_dram_fast(rtc_stack));

    TEST_ASSERT_NOT_NULL(xTaskCreateStatic(aes_ctr_stream_test_task, "aes_ctr_task", sizeof(rtc_stack), NULL,
                                            3, rtc_stack, &rtc_task));
    TEST_ASSERT_TRUE(xSemaphoreTake(done_sem, 10000 / portTICK_PERIOD_MS));
    vSemaphoreDelete(done_sem);
}

#endif //CONFIG_ESP_SYSTEM_RTC_FAST_MEM_AS_HEAP_DEPCHECK