/*

 * Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <stdio.h>

#include <openssl/opensslconf.h>

#include <string.h>

#include <openssl/engine.h>

#include <openssl/evp.h>

#include <openssl/rand.h>

#include "testutil.h"

/* Use a buffer size which is not aligned to block size */

#define BUFFER_SIZE     17

#ifndef OPENSSL_NO_ENGINE

static ENGINE *e;

#endif

#ifndef OPENSSL_NO_AFALGENG

# include <linux/version.h>

# define K_MAJ   4

# define K_MIN1  1

# define K_MIN2  0

# if LINUX_VERSION_CODE < KERNEL_VERSION(K_MAJ, K_MIN1, K_MIN2)

/*

 * If we get here then it looks like there is a mismatch between the linux

 * headers and the actual kernel version, so we have tried to compile with

 * afalg support, but then skipped it in e_afalg.c. As far as this test is

 * concerned we behave as if we had been configured without support

 */

#  define OPENSSL_NO_AFALGENG

# endif

#endif

#ifndef OPENSSL_NO_AFALGENG

static int test_afalg_aes_cbc(int keysize_idx)

{

    EVP_CIPHER_CTX *ctx;

    const EVP_CIPHER *cipher;

    unsigned char key[] = "\x06\xa9\x21\x40\x36\xb8\xa1\x5b"

                          "\x51\x2e\x03\xd5\x34\x12\x00\x06"

                          "\x06\xa9\x21\x40\x36\xb8\xa1\x5b"

                          "\x51\x2e\x03\xd5\x34\x12\x00\x06";

    unsigned char iv[] = "\x3d\xaf\xba\x42\x9d\x9e\xb4\x30"

                         "\xb4\x22\xda\x80\x2c\x9f\xac\x41";

    /* input = "Single block msg\n"  17Bytes*/

    unsigned char in[BUFFER_SIZE] = "\x53\x69\x6e\x67\x6c\x65\x20\x62"

                                    "\x6c\x6f\x63\x6b\x20\x6d\x73\x67\x0a";

    unsigned char ebuf[BUFFER_SIZE + 32];

    unsigned char dbuf[BUFFER_SIZE + 32];

    unsigned char encresult_128[] = "\xe3\x53\x77\x9c\x10\x79\xae\xb8"

                                    "\x27\x08\x94\x2d\xbe\x77\x18\x1a\x2d";

    unsigned char encresult_192[] = "\xf7\xe4\x26\xd1\xd5\x4f\x8f\x39"

                                    "\xb1\x9e\xe0\xdf\x61\xb9\xc2\x55\xeb";

    unsigned char encresult_256[] = "\xa0\x76\x85\xfd\xc1\x65\x71\x9d"

                                    "\xc7\xe9\x13\x6e\xae\x55\x49\xb4\x13";

    unsigned char *enc_result = NULL;

    int encl, encf, decl, decf;

    int ret = 0;

    switch (keysize_idx) {

        case 0:

            cipher = EVP_aes_128_cbc();

            enc_result = &encresult_128[0];

            break;

        case 1:

            cipher = EVP_aes_192_cbc();

            enc_result = &encresult_192[0];

            break;

        case 2:

            cipher = EVP_aes_256_cbc();

            enc_result = &encresult_256[0];

            break;

        default:

            cipher = NULL;

    }

    if (!TEST_ptr(ctx = EVP_CIPHER_CTX_new()))

            return 0;

    if (!TEST_true(EVP_CipherInit_ex(ctx, cipher, e, key, iv, 1))

            || !TEST_true(EVP_CipherUpdate(ctx, ebuf, &encl, in, BUFFER_SIZE))

            || !TEST_true(EVP_CipherFinal_ex(ctx, ebuf+encl, &encf)))

        goto end;

    encl += encf;

    if (!TEST_mem_eq(enc_result, BUFFER_SIZE, ebuf, BUFFER_SIZE))

        goto end;

    if (!TEST_true(EVP_CIPHER_CTX_reset(ctx))

            || !TEST_true(EVP_CipherInit_ex(ctx, cipher, e, key, iv, 0))

            || !TEST_true(EVP_CipherUpdate(ctx, dbuf, &decl, ebuf, encl))

            || !TEST_true(EVP_CipherFinal_ex(ctx, dbuf+decl, &decf)))

        goto end;

    decl += decf;

    if (!TEST_int_eq(decl, BUFFER_SIZE)

            || !TEST_mem_eq(dbuf, BUFFER_SIZE, in, BUFFER_SIZE))

        goto end;

    ret = 1;

 end:

    EVP_CIPHER_CTX_free(ctx);

    return ret;

}

#endif

#ifndef OPENSSL_NO_ENGINE

int global_init(void)

{

    ENGINE_load_builtin_engines();

# ifndef OPENSSL_NO_STATIC_ENGINE

    OPENSSL_init_crypto(OPENSSL_INIT_ENGINE_AFALG, NULL);

# endif

    return 1;

}

#endif

int setup_tests(void)

{

#ifndef OPENSSL_NO_ENGINE

    if ((e = ENGINE_by_id("afalg")) == NULL) {

        /* Probably a platform env issue, not a test failure. */

        TEST_info("Can't load AFALG engine");

    } else {

# ifndef OPENSSL_NO_AFALGENG

        ADD_ALL_TESTS(test_afalg_aes_cbc, 3);

# endif

    }

#endif

    return 1;

}

#ifndef OPENSSL_NO_ENGINE

void cleanup_tests(void)

{

    ENGINE_free(e);

}

#endif