/**
 * Copyright 2020-2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0.
 */

#include <aws/nitro_enclaves/internal/cms.h>
#include <aws/nitro_enclaves/nitro_enclaves.h>
#include <aws/testing/aws_test_harness.h>

/* CMS response from KMS. Enveloped Data. RSA-OAEP envelope with AES256-CBC encrypted content */
static const uint8_t input_ber[] = {
    0x30, 0x80, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x03, 0xa0, 0x80, 0x30, 0x80, 0x02, 0x01,
    0x02, 0x31, 0x82, 0x01, 0x6b, 0x30, 0x82, 0x01, 0x67, 0x02, 0x01, 0x02, 0x80, 0x20, 0x70, 0x87, 0xb5, 0x5d, 0xf9,
    0x4b, 0xa3, 0x25, 0x5c, 0xdf, 0x3c, 0x01, 0x84, 0x0a, 0x2a, 0xa3, 0xec, 0x93, 0x62, 0x06, 0x25, 0xd6, 0x01, 0xcf,
    0x56, 0xf9, 0x7b, 0xde, 0x7a, 0x3d, 0x2e, 0xb1, 0x30, 0x3c, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01,
    0x01, 0x07, 0x30, 0x2f, 0xa0, 0x0f, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01,
    0x05, 0x00, 0xa1, 0x1c, 0x30, 0x1a, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x08, 0x30, 0x0d,
    0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x82, 0x01, 0x00, 0xa0, 0x61,
    0x45, 0x93, 0xa0, 0x30, 0xee, 0x33, 0x6b, 0xff, 0xf0, 0x76, 0x61, 0x8b, 0x01, 0x30, 0xd0, 0x45, 0xde, 0x9f, 0x4d,
    0x18, 0x3d, 0x83, 0xc5, 0xda, 0x88, 0x2f, 0x13, 0xab, 0xc1, 0xf4, 0xbf, 0x0d, 0x13, 0x64, 0x58, 0x69, 0x39, 0x34,
    0x42, 0xab, 0x58, 0x2e, 0x6a, 0x04, 0xd6, 0x97, 0xd5, 0x2d, 0x56, 0x23, 0xe3, 0x67, 0xe7, 0xe9, 0x2d, 0xb6, 0xeb,
    0xd2, 0xbd, 0x07, 0x73, 0x5b, 0x15, 0x3f, 0x28, 0x26, 0xbe, 0xe5, 0xdf, 0x8e, 0x16, 0xc7, 0x13, 0xa1, 0xe8, 0x5c,
    0xb6, 0xba, 0x85, 0xe8, 0x86, 0x81, 0x33, 0x5c, 0x7e, 0x94, 0x1a, 0x94, 0xab, 0xf0, 0xc0, 0x11, 0x3e, 0x03, 0x09,
    0x16, 0xe2, 0xb6, 0xe1, 0x82, 0x6d, 0xb4, 0xff, 0xb9, 0x19, 0xb8, 0xe1, 0xb6, 0xf5, 0x9e, 0xc2, 0x77, 0xe5, 0x8d,
    0xe4, 0x0b, 0x0f, 0xfe, 0xec, 0xaa, 0x0d, 0x94, 0xfb, 0xcb, 0x29, 0x03, 0x74, 0xed, 0x3d, 0xfc, 0x35, 0xd3, 0x1a,
    0x8f, 0x43, 0xae, 0x13, 0x00, 0xfe, 0x20, 0xfd, 0xd9, 0x86, 0xd4, 0xb8, 0x56, 0x56, 0x57, 0x45, 0x1f, 0x9d, 0xc6,
    0x93, 0xe1, 0x34, 0x67, 0x89, 0x20, 0x22, 0x1c, 0x58, 0xa2, 0x8d, 0xa5, 0xe7, 0x1a, 0xb6, 0xb3, 0x1c, 0xaa, 0x44,
    0x58, 0x25, 0xa6, 0x38, 0x5c, 0x6c, 0x4f, 0x5d, 0x5d, 0x5e, 0xbb, 0xc2, 0xc2, 0x57, 0x0e, 0x96, 0x47, 0xfd, 0xed,
    0x36, 0xb5, 0x59, 0x64, 0x7b, 0xcb, 0x27, 0xe5, 0x88, 0x86, 0x25, 0x5f, 0x58, 0x2c, 0x63, 0xd8, 0x63, 0xec, 0xec,
    0x30, 0x7d, 0x15, 0x76, 0x3a, 0xbc, 0xe0, 0xb1, 0xb8, 0x12, 0xa5, 0x50, 0x93, 0x8c, 0xa4, 0xe2, 0xd2, 0x8a, 0x74,
    0x56, 0x3d, 0xb5, 0x23, 0x67, 0x55, 0x8d, 0x3e, 0x2e, 0x82, 0xac, 0x2a, 0x27, 0xfe, 0x5c, 0x93, 0x91, 0xa0, 0x07,
    0xc1, 0x5f, 0x75, 0xb9, 0x0a, 0xb0, 0xdd, 0x30, 0x80, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07,
    0x01, 0x30, 0x1d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x01, 0x2a, 0x04, 0x10, 0x68, 0x8c, 0x6d,
    0x5f, 0x7f, 0x31, 0xb0, 0xfe, 0xce, 0xdf, 0x09, 0xf2, 0xe7, 0xc9, 0x9a, 0xc9, 0xa0, 0x80, 0x04, 0x30, 0x70, 0xe5,
    0xca, 0xaf, 0xfd, 0x49, 0xad, 0x24, 0xef, 0xe1, 0x5b, 0xf9, 0x03, 0xbe, 0x9d, 0x19, 0x89, 0x5b, 0x77, 0x7d, 0x26,
    0x9b, 0x57, 0xb0, 0x25, 0xf6, 0xf6, 0x7e, 0x7e, 0xf9, 0x3f, 0x94, 0x46, 0x45, 0x15, 0xf2, 0xeb, 0xe0, 0x34, 0xea,
    0x0b, 0x76, 0x21, 0xa1, 0xff, 0x19, 0x29, 0x2e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};

static const uint8_t ciphertext_out[] = {0x70, 0xe5, 0xca, 0xaf, 0xfd, 0x49, 0xad, 0x24, 0xef, 0xe1, 0x5b, 0xf9,
                                         0x03, 0xbe, 0x9d, 0x19, 0x89, 0x5b, 0x77, 0x7d, 0x26, 0x9b, 0x57, 0xb0,
                                         0x25, 0xf6, 0xf6, 0x7e, 0x7e, 0xf9, 0x3f, 0x94, 0x46, 0x45, 0x15, 0xf2,
                                         0xeb, 0xe0, 0x34, 0xea, 0x0b, 0x76, 0x21, 0xa1, 0xff, 0x19, 0x29, 0x2e};

static const uint8_t iv_out[] =
    {0x68, 0x8c, 0x6d, 0x5f, 0x7f, 0x31, 0xb0, 0xfe, 0xce, 0xdf, 0x09, 0xf2, 0xe7, 0xc9, 0x9a, 0xc9};

static const uint8_t encrypted_key_out[] = {
    0xa0, 0x61, 0x45, 0x93, 0xa0, 0x30, 0xee, 0x33, 0x6b, 0xff, 0xf0, 0x76, 0x61, 0x8b, 0x01, 0x30, 0xd0, 0x45, 0xde,
    0x9f, 0x4d, 0x18, 0x3d, 0x83, 0xc5, 0xda, 0x88, 0x2f, 0x13, 0xab, 0xc1, 0xf4, 0xbf, 0x0d, 0x13, 0x64, 0x58, 0x69,
    0x39, 0x34, 0x42, 0xab, 0x58, 0x2e, 0x6a, 0x04, 0xd6, 0x97, 0xd5, 0x2d, 0x56, 0x23, 0xe3, 0x67, 0xe7, 0xe9, 0x2d,
    0xb6, 0xeb, 0xd2, 0xbd, 0x07, 0x73, 0x5b, 0x15, 0x3f, 0x28, 0x26, 0xbe, 0xe5, 0xdf, 0x8e, 0x16, 0xc7, 0x13, 0xa1,
    0xe8, 0x5c, 0xb6, 0xba, 0x85, 0xe8, 0x86, 0x81, 0x33, 0x5c, 0x7e, 0x94, 0x1a, 0x94, 0xab, 0xf0, 0xc0, 0x11, 0x3e,
    0x03, 0x09, 0x16, 0xe2, 0xb6, 0xe1, 0x82, 0x6d, 0xb4, 0xff, 0xb9, 0x19, 0xb8, 0xe1, 0xb6, 0xf5, 0x9e, 0xc2, 0x77,
    0xe5, 0x8d, 0xe4, 0x0b, 0x0f, 0xfe, 0xec, 0xaa, 0x0d, 0x94, 0xfb, 0xcb, 0x29, 0x03, 0x74, 0xed, 0x3d, 0xfc, 0x35,
    0xd3, 0x1a, 0x8f, 0x43, 0xae, 0x13, 0x00, 0xfe, 0x20, 0xfd, 0xd9, 0x86, 0xd4, 0xb8, 0x56, 0x56, 0x57, 0x45, 0x1f,
    0x9d, 0xc6, 0x93, 0xe1, 0x34, 0x67, 0x89, 0x20, 0x22, 0x1c, 0x58, 0xa2, 0x8d, 0xa5, 0xe7, 0x1a, 0xb6, 0xb3, 0x1c,
    0xaa, 0x44, 0x58, 0x25, 0xa6, 0x38, 0x5c, 0x6c, 0x4f, 0x5d, 0x5d, 0x5e, 0xbb, 0xc2, 0xc2, 0x57, 0x0e, 0x96, 0x47,
    0xfd, 0xed, 0x36, 0xb5, 0x59, 0x64, 0x7b, 0xcb, 0x27, 0xe5, 0x88, 0x86, 0x25, 0x5f, 0x58, 0x2c, 0x63, 0xd8, 0x63,
    0xec, 0xec, 0x30, 0x7d, 0x15, 0x76, 0x3a, 0xbc, 0xe0, 0xb1, 0xb8, 0x12, 0xa5, 0x50, 0x93, 0x8c, 0xa4, 0xe2, 0xd2,
    0x8a, 0x74, 0x56, 0x3d, 0xb5, 0x23, 0x67, 0x55, 0x8d, 0x3e, 0x2e, 0x82, 0xac, 0x2a, 0x27, 0xfe, 0x5c, 0x93, 0x91,
    0xa0, 0x07, 0xc1, 0x5f, 0x75, 0xb9, 0x0a, 0xb0, 0xdd};

AWS_TEST_CASE(test_cms_parsing_correctness, s_test_cms_parsing_correctness)
static int s_test_cms_parsing_correctness(struct aws_allocator *allocator, void *ctx) {
    (void)ctx;

    aws_nitro_enclaves_library_init(allocator);

    struct aws_byte_buf plaintext, reference_encrypted_key, reference_iv, reference_ciphertext;

    struct aws_byte_cursor cursor = aws_byte_cursor_from_array(input_ber, sizeof(input_ber));
    ASSERT_TRUE(aws_byte_cursor_is_valid(&cursor));
    ASSERT_SUCCESS(aws_byte_buf_init_copy_from_cursor(&plaintext, allocator, cursor));

    cursor = aws_byte_cursor_from_array(encrypted_key_out, sizeof(encrypted_key_out));
    ASSERT_TRUE(aws_byte_cursor_is_valid(&cursor));
    ASSERT_SUCCESS(aws_byte_buf_init_copy_from_cursor(&reference_encrypted_key, allocator, cursor));

    cursor = aws_byte_cursor_from_array(iv_out, sizeof(iv_out));
    ASSERT_TRUE(aws_byte_cursor_is_valid(&cursor));
    ASSERT_SUCCESS(aws_byte_buf_init_copy_from_cursor(&reference_iv, allocator, cursor));

    cursor = aws_byte_cursor_from_array(ciphertext_out, sizeof(ciphertext_out));
    ASSERT_TRUE(aws_byte_cursor_is_valid(&cursor));
    ASSERT_SUCCESS(aws_byte_buf_init_copy_from_cursor(&reference_ciphertext, allocator, cursor));

    struct aws_byte_buf encrypted_key, iv, ciphertext;

    ASSERT_SUCCESS(aws_cms_parse_enveloped_data(&plaintext, &encrypted_key, &iv, &ciphertext));

    ASSERT_TRUE(aws_byte_buf_eq(&encrypted_key, &reference_encrypted_key));
    ASSERT_TRUE(aws_byte_buf_eq(&iv, &reference_iv));
    ASSERT_TRUE(aws_byte_buf_eq(&ciphertext, &reference_ciphertext));

    aws_byte_buf_clean_up_secure(&plaintext);
    aws_byte_buf_clean_up_secure(&encrypted_key);
    aws_byte_buf_clean_up_secure(&reference_encrypted_key);
    aws_byte_buf_clean_up_secure(&iv);
    aws_byte_buf_clean_up_secure(&reference_iv);
    aws_byte_buf_clean_up_secure(&ciphertext);
    aws_byte_buf_clean_up_secure(&reference_ciphertext);

    aws_nitro_enclaves_library_clean_up();

    return SUCCESS;
}

/* CMS response from KMS. Enveloped Data. RSA-OAEP envelope with AES256-CBC encrypted content with context specific
 * encrypted content. */
static const uint8_t input_ber_w_ctx[] = {
    0x30, 0x80, 0x06, 0x09, 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x07, 0x03, 0xA0, 0x80, 0x30, 0x80, 0x02, 0x01,
    0x02, 0x31, 0x82, 0x01, 0x6B, 0x30, 0x82, 0x01, 0x67, 0x02, 0x01, 0x02, 0x80, 0x20, 0x4E, 0x61, 0xDF, 0x69, 0xE4,
    0x43, 0xB8, 0xE2, 0x5C, 0x8A, 0xE8, 0x33, 0x18, 0xCF, 0xC7, 0x2D, 0x9B, 0x6A, 0x51, 0x76, 0xD2, 0x16, 0x77, 0x90,
    0xFD, 0xF8, 0x19, 0xC0, 0x86, 0xE6, 0x96, 0x7A, 0x30, 0x3C, 0x06, 0x09, 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01,
    0x01, 0x07, 0x30, 0x2F, 0xA0, 0x0F, 0x30, 0x0D, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01,
    0x05, 0x00, 0xA1, 0x1C, 0x30, 0x1A, 0x06, 0x09, 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x01, 0x08, 0x30, 0x0D,
    0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x82, 0x01, 0x00, 0x4A, 0x1C,
    0xA1, 0x22, 0x02, 0xE4, 0xCE, 0x0B, 0x1F, 0x8B, 0x35, 0xCE, 0xA0, 0xD5, 0xD9, 0x05, 0x33, 0x6C, 0xAA, 0xA5, 0xD5,
    0x17, 0xEE, 0xD6, 0x5F, 0x6F, 0xD8, 0x7A, 0x0E, 0x7B, 0x29, 0x29, 0x12, 0x65, 0x29, 0x41, 0x52, 0x7A, 0x9A, 0x8B,
    0x88, 0xF9, 0xE7, 0xC6, 0xB5, 0x09, 0x74, 0x07, 0x4B, 0x81, 0xA6, 0xD4, 0x37, 0x51, 0x87, 0x6E, 0x7C, 0xA5, 0x95,
    0xF5, 0x5D, 0xF8, 0x6A, 0x47, 0x42, 0x86, 0x19, 0x45, 0xE0, 0xB9, 0x15, 0xE4, 0xB8, 0x40, 0xB9, 0xE0, 0x43, 0x92,
    0x1E, 0xBD, 0xEF, 0x92, 0xD1, 0x58, 0x8C, 0x72, 0x7B, 0xBA, 0x9C, 0xF9, 0x36, 0x0A, 0xCF, 0x96, 0x63, 0xBC, 0x8B,
    0xA7, 0xDA, 0xB4, 0x3F, 0x2B, 0x61, 0xA3, 0xF4, 0x91, 0x72, 0xA0, 0x76, 0x18, 0x00, 0xAD, 0x03, 0x60, 0x6B, 0x5A,
    0x7F, 0x59, 0x59, 0x46, 0xC5, 0x0A, 0xB2, 0x3C, 0x7D, 0x00, 0x14, 0x62, 0x9E, 0x70, 0xC2, 0xF6, 0xD4, 0x10, 0xB4,
    0x96, 0x7A, 0x32, 0xE0, 0xB6, 0xDA, 0x71, 0x2E, 0xF8, 0x3B, 0x1F, 0x09, 0x5A, 0xD4, 0xDF, 0x7B, 0x0D, 0x3A, 0x58,
    0x47, 0xF9, 0xAF, 0xBD, 0x75, 0xD7, 0x29, 0x47, 0x3A, 0x07, 0x0F, 0x79, 0x79, 0xCC, 0x0C, 0x43, 0xA1, 0xD5, 0xBA,
    0xC7, 0x7A, 0x8E, 0xD7, 0xB1, 0x7D, 0xBC, 0x95, 0x4E, 0x5D, 0x88, 0x10, 0x03, 0x32, 0xBC, 0x0E, 0x02, 0xC2, 0x83,
    0xBF, 0x01, 0xB4, 0xC6, 0xB1, 0x60, 0xB1, 0x15, 0x0E, 0xAD, 0xFC, 0x8D, 0x91, 0xD6, 0x28, 0xF5, 0xF6, 0x14, 0xAF,
    0x4F, 0x38, 0x4D, 0x58, 0x1F, 0xB5, 0xF6, 0x07, 0xAB, 0x91, 0xF6, 0x0A, 0xC3, 0xCF, 0x77, 0x73, 0x25, 0xA8, 0xFA,
    0xFE, 0x90, 0x3E, 0xFF, 0x1D, 0xD7, 0xE4, 0x26, 0x02, 0x44, 0xE5, 0x06, 0x64, 0xAA, 0xB6, 0x24, 0x4B, 0xC3, 0xE9,
    0x19, 0x51, 0x07, 0x0A, 0x5D, 0xC5, 0xF8, 0x30, 0x80, 0x06, 0x09, 0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x07,
    0x01, 0x30, 0x1D, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x01, 0x2A, 0x04, 0x10, 0xE6, 0x6C, 0x11,
    0x72, 0xAE, 0xE0, 0xF2, 0xF7, 0xBE, 0x34, 0xE3, 0xAF, 0xC6, 0xB0, 0xE4, 0xFE, 0x80, 0x10, 0x1F, 0x94, 0x3E, 0xB0,
    0x10, 0x5C, 0x1B, 0x06, 0x44, 0xDF, 0x4F, 0x71, 0x30, 0x44, 0x8A, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00};

static const uint8_t ciphertext_out_w_ctx[] =
    {0x1F, 0x94, 0x3E, 0xB0, 0x10, 0x5C, 0x1B, 0x06, 0x44, 0xDF, 0x4F, 0x71, 0x30, 0x44, 0x8A, 0x28};

static const uint8_t iv_out_w_ctx[] =
    {0xE6, 0x6C, 0x11, 0x72, 0xAE, 0xE0, 0xF2, 0xF7, 0xBE, 0x34, 0xE3, 0xAF, 0xC6, 0xB0, 0xE4, 0xFE};

static const uint8_t encrypted_key_out_w_ctx[] = {
    0x4A, 0x1C, 0xA1, 0x22, 0x02, 0xE4, 0xCE, 0x0B, 0x1F, 0x8B, 0x35, 0xCE, 0xA0, 0xD5, 0xD9, 0x05, 0x33, 0x6C, 0xAA,
    0xA5, 0xD5, 0x17, 0xEE, 0xD6, 0x5F, 0x6F, 0xD8, 0x7A, 0x0E, 0x7B, 0x29, 0x29, 0x12, 0x65, 0x29, 0x41, 0x52, 0x7A,
    0x9A, 0x8B, 0x88, 0xF9, 0xE7, 0xC6, 0xB5, 0x09, 0x74, 0x07, 0x4B, 0x81, 0xA6, 0xD4, 0x37, 0x51, 0x87, 0x6E, 0x7C,
    0xA5, 0x95, 0xF5, 0x5D, 0xF8, 0x6A, 0x47, 0x42, 0x86, 0x19, 0x45, 0xE0, 0xB9, 0x15, 0xE4, 0xB8, 0x40, 0xB9, 0xE0,
    0x43, 0x92, 0x1E, 0xBD, 0xEF, 0x92, 0xD1, 0x58, 0x8C, 0x72, 0x7B, 0xBA, 0x9C, 0xF9, 0x36, 0x0A, 0xCF, 0x96, 0x63,
    0xBC, 0x8B, 0xA7, 0xDA, 0xB4, 0x3F, 0x2B, 0x61, 0xA3, 0xF4, 0x91, 0x72, 0xA0, 0x76, 0x18, 0x00, 0xAD, 0x03, 0x60,
    0x6B, 0x5A, 0x7F, 0x59, 0x59, 0x46, 0xC5, 0x0A, 0xB2, 0x3C, 0x7D, 0x00, 0x14, 0x62, 0x9E, 0x70, 0xC2, 0xF6, 0xD4,
    0x10, 0xB4, 0x96, 0x7A, 0x32, 0xE0, 0xB6, 0xDA, 0x71, 0x2E, 0xF8, 0x3B, 0x1F, 0x09, 0x5A, 0xD4, 0xDF, 0x7B, 0x0D,
    0x3A, 0x58, 0x47, 0xF9, 0xAF, 0xBD, 0x75, 0xD7, 0x29, 0x47, 0x3A, 0x07, 0x0F, 0x79, 0x79, 0xCC, 0x0C, 0x43, 0xA1,
    0xD5, 0xBA, 0xC7, 0x7A, 0x8E, 0xD7, 0xB1, 0x7D, 0xBC, 0x95, 0x4E, 0x5D, 0x88, 0x10, 0x03, 0x32, 0xBC, 0x0E, 0x02,
    0xC2, 0x83, 0xBF, 0x01, 0xB4, 0xC6, 0xB1, 0x60, 0xB1, 0x15, 0x0E, 0xAD, 0xFC, 0x8D, 0x91, 0xD6, 0x28, 0xF5, 0xF6,
    0x14, 0xAF, 0x4F, 0x38, 0x4D, 0x58, 0x1F, 0xB5, 0xF6, 0x07, 0xAB, 0x91, 0xF6, 0x0A, 0xC3, 0xCF, 0x77, 0x73, 0x25,
    0xA8, 0xFA, 0xFE, 0x90, 0x3E, 0xFF, 0x1D, 0xD7, 0xE4, 0x26, 0x02, 0x44, 0xE5, 0x06, 0x64, 0xAA, 0xB6, 0x24, 0x4B,
    0xC3, 0xE9, 0x19, 0x51, 0x07, 0x0A, 0x5D, 0xC5, 0xF8};

AWS_TEST_CASE(test_cms_envelope_ctx_specific, s_test_cms_envelope_ctx_specific)
static int s_test_cms_envelope_ctx_specific(struct aws_allocator *allocator, void *ctx) {
    (void)ctx;

    aws_nitro_enclaves_library_init(allocator);

    struct aws_byte_buf plaintext, reference_encrypted_key, reference_iv, reference_ciphertext;

    struct aws_byte_cursor cursor = aws_byte_cursor_from_array(input_ber_w_ctx, sizeof(input_ber_w_ctx));
    ASSERT_TRUE(aws_byte_cursor_is_valid(&cursor));
    ASSERT_SUCCESS(aws_byte_buf_init_copy_from_cursor(&plaintext, allocator, cursor));

    cursor = aws_byte_cursor_from_array(encrypted_key_out_w_ctx, sizeof(encrypted_key_out_w_ctx));
    ASSERT_TRUE(aws_byte_cursor_is_valid(&cursor));
    ASSERT_SUCCESS(aws_byte_buf_init_copy_from_cursor(&reference_encrypted_key, allocator, cursor));

    cursor = aws_byte_cursor_from_array(iv_out_w_ctx, sizeof(iv_out_w_ctx));
    ASSERT_TRUE(aws_byte_cursor_is_valid(&cursor));
    ASSERT_SUCCESS(aws_byte_buf_init_copy_from_cursor(&reference_iv, allocator, cursor));

    cursor = aws_byte_cursor_from_array(ciphertext_out_w_ctx, sizeof(ciphertext_out_w_ctx));
    ASSERT_TRUE(aws_byte_cursor_is_valid(&cursor));
    ASSERT_SUCCESS(aws_byte_buf_init_copy_from_cursor(&reference_ciphertext, allocator, cursor));

    struct aws_byte_buf encrypted_key, iv, ciphertext;

    ASSERT_SUCCESS(aws_cms_parse_enveloped_data(&plaintext, &encrypted_key, &iv, &ciphertext));

    ASSERT_TRUE(aws_byte_buf_eq(&encrypted_key, &reference_encrypted_key));
    ASSERT_TRUE(aws_byte_buf_eq(&iv, &reference_iv));
    ASSERT_TRUE(aws_byte_buf_eq(&ciphertext, &reference_ciphertext));

    aws_byte_buf_clean_up_secure(&plaintext);
    aws_byte_buf_clean_up_secure(&encrypted_key);
    aws_byte_buf_clean_up_secure(&reference_encrypted_key);
    aws_byte_buf_clean_up_secure(&iv);
    aws_byte_buf_clean_up_secure(&reference_iv);
    aws_byte_buf_clean_up_secure(&ciphertext);
    aws_byte_buf_clean_up_secure(&reference_ciphertext);

    aws_nitro_enclaves_library_clean_up();

    return SUCCESS;
}