1/*
2 * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License").  You may not use
5 * this file except in compliance with the License.  You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/* We need to use some engine deprecated APIs */
11#define OPENSSL_SUPPRESS_DEPRECATED
12
13#include <stdio.h>
14#include <openssl/opensslconf.h>
15
16#include <string.h>
17#include <openssl/engine.h>
18#include <openssl/evp.h>
19#include <openssl/rand.h>
20#include "testutil.h"
21
22/* Use a buffer size which is not aligned to block size */
23#define BUFFER_SIZE     17
24
25#ifndef OPENSSL_NO_ENGINE
26static ENGINE *e;
27
28static int test_afalg_aes_cbc(int keysize_idx)
29{
30    EVP_CIPHER_CTX *ctx;
31    const EVP_CIPHER *cipher;
32    unsigned char ebuf[BUFFER_SIZE + 32];
33    unsigned char dbuf[BUFFER_SIZE + 32];
34    const unsigned char *enc_result = NULL;
35    int encl, encf, decl, decf;
36    int ret = 0;
37    static const unsigned char key[] =
38        "\x06\xa9\x21\x40\x36\xb8\xa1\x5b\x51\x2e\x03\xd5\x34\x12\x00\x06"
39        "\x06\xa9\x21\x40\x36\xb8\xa1\x5b\x51\x2e\x03\xd5\x34\x12\x00\x06";
40    static const unsigned char iv[] =
41        "\x3d\xaf\xba\x42\x9d\x9e\xb4\x30\xb4\x22\xda\x80\x2c\x9f\xac\x41";
42    /* input = "Single block msg\n" 17 Bytes*/
43    static const unsigned char in[BUFFER_SIZE] =
44        "\x53\x69\x6e\x67\x6c\x65\x20\x62\x6c\x6f\x63\x6b\x20\x6d\x73\x67"
45        "\x0a";
46    static const unsigned char encresult_128[BUFFER_SIZE] =
47        "\xe3\x53\x77\x9c\x10\x79\xae\xb8\x27\x08\x94\x2d\xbe\x77\x18\x1a"
48        "\x2d";
49    static const unsigned char encresult_192[BUFFER_SIZE] =
50        "\xf7\xe4\x26\xd1\xd5\x4f\x8f\x39\xb1\x9e\xe0\xdf\x61\xb9\xc2\x55"
51        "\xeb";
52    static const unsigned char encresult_256[BUFFER_SIZE] =
53        "\xa0\x76\x85\xfd\xc1\x65\x71\x9d\xc7\xe9\x13\x6e\xae\x55\x49\xb4"
54        "\x13";
55
56#ifdef OSSL_SANITIZE_MEMORY
57    /*
58     * Initialise the encryption & decryption buffers to pacify the memory
59     * sanitiser.  The sanitiser doesn't know that this memory is modified
60     * by the engine, this tells it that all is good.
61     */
62    OPENSSL_cleanse(ebuf, sizeof(ebuf));
63    OPENSSL_cleanse(dbuf, sizeof(dbuf));
64#endif
65
66    switch (keysize_idx) {
67        case 0:
68            cipher = EVP_aes_128_cbc();
69            enc_result = &encresult_128[0];
70            break;
71        case 1:
72            cipher = EVP_aes_192_cbc();
73            enc_result = &encresult_192[0];
74            break;
75        case 2:
76            cipher = EVP_aes_256_cbc();
77            enc_result = &encresult_256[0];
78            break;
79        default:
80            cipher = NULL;
81    }
82    if (!TEST_ptr(ctx = EVP_CIPHER_CTX_new()))
83            return 0;
84
85    if (!TEST_true(EVP_CipherInit_ex(ctx, cipher, e, key, iv, 1))
86            || !TEST_true(EVP_CipherUpdate(ctx, ebuf, &encl, in, BUFFER_SIZE))
87            || !TEST_true(EVP_CipherFinal_ex(ctx, ebuf + encl, &encf)))
88        goto end;
89    encl += encf;
90
91    if (!TEST_mem_eq(enc_result, BUFFER_SIZE, ebuf, BUFFER_SIZE))
92        goto end;
93
94    if (!TEST_true(EVP_CIPHER_CTX_reset(ctx))
95            || !TEST_true(EVP_CipherInit_ex(ctx, cipher, e, key, iv, 0))
96            || !TEST_true(EVP_CipherUpdate(ctx, dbuf, &decl, ebuf, encl))
97            || !TEST_true(EVP_CipherFinal_ex(ctx, dbuf + decl, &decf)))
98        goto end;
99    decl += decf;
100
101    if (!TEST_int_eq(decl, BUFFER_SIZE)
102            || !TEST_mem_eq(dbuf, BUFFER_SIZE, in, BUFFER_SIZE))
103        goto end;
104
105    ret = 1;
106
107 end:
108    EVP_CIPHER_CTX_free(ctx);
109    return ret;
110}
111
112static int test_pr16743(void)
113{
114    int ret = 0;
115    const EVP_CIPHER * cipher;
116    EVP_CIPHER_CTX *ctx;
117
118    if (!TEST_true(ENGINE_init(e)))
119        return 0;
120    cipher = ENGINE_get_cipher(e, NID_aes_128_cbc);
121    ctx = EVP_CIPHER_CTX_new();
122    if (cipher != NULL && ctx != NULL)
123        ret = EVP_EncryptInit_ex(ctx, cipher, e, NULL, NULL);
124    TEST_true(ret);
125    EVP_CIPHER_CTX_free(ctx);
126    ENGINE_finish(e);
127    return ret;
128}
129
130int global_init(void)
131{
132    ENGINE_load_builtin_engines();
133# ifndef OPENSSL_NO_STATIC_ENGINE
134    OPENSSL_init_crypto(OPENSSL_INIT_ENGINE_AFALG, NULL);
135# endif
136    return 1;
137}
138#endif
139
140int setup_tests(void)
141{
142#ifndef OPENSSL_NO_ENGINE
143    if ((e = ENGINE_by_id("afalg")) == NULL) {
144        /* Probably a platform env issue, not a test failure. */
145        TEST_info("Can't load AFALG engine");
146    } else {
147        ADD_ALL_TESTS(test_afalg_aes_cbc, 3);
148        ADD_TEST(test_pr16743);
149    }
150#endif
151
152    return 1;
153}
154
155#ifndef OPENSSL_NO_ENGINE
156void cleanup_tests(void)
157{
158    ENGINE_free(e);
159}
160#endif
161