1/*
2 * Copyright 1995-2020 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/*
11 * CAST low level APIs are deprecated for public use, but still ok for
12 * internal use.
13 */
14#include "internal/deprecated.h"
15
16#include <stdio.h>
17#include <string.h>
18#include <stdlib.h>
19
20#include <openssl/opensslconf.h> /* To see if OPENSSL_NO_CAST is defined */
21#include "internal/nelem.h"
22#include "testutil.h"
23
24#ifndef OPENSSL_NO_CAST
25# include <openssl/cast.h>
26
27static unsigned char k[16] = {
28    0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78,
29    0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A
30};
31
32static unsigned char in[8] =
33    { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF };
34
35static int k_len[3] = { 16, 10, 5 };
36
37static unsigned char c[3][8] = {
38    {0x23, 0x8B, 0x4F, 0xE5, 0x84, 0x7E, 0x44, 0xB2},
39    {0xEB, 0x6A, 0x71, 0x1A, 0x2C, 0x02, 0x27, 0x1B},
40    {0x7A, 0xC8, 0x16, 0xD1, 0x6E, 0x9B, 0x30, 0x2E},
41};
42
43static unsigned char in_a[16] = {
44    0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78,
45    0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A
46};
47
48static unsigned char in_b[16] = {
49    0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78,
50    0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A
51};
52
53static unsigned char c_a[16] = {
54    0xEE, 0xA9, 0xD0, 0xA2, 0x49, 0xFD, 0x3B, 0xA6,
55    0xB3, 0x43, 0x6F, 0xB8, 0x9D, 0x6D, 0xCA, 0x92
56};
57
58static unsigned char c_b[16] = {
59    0xB2, 0xC9, 0x5E, 0xB0, 0x0C, 0x31, 0xAD, 0x71,
60    0x80, 0xAC, 0x05, 0xB8, 0xE8, 0x3D, 0x69, 0x6E
61};
62
63static int cast_test_vector(int z)
64{
65    int testresult = 1;
66    CAST_KEY key;
67    unsigned char out[80];
68
69    CAST_set_key(&key, k_len[z], k);
70    CAST_ecb_encrypt(in, out, &key, CAST_ENCRYPT);
71    if (!TEST_mem_eq(out, sizeof(c[z]), c[z], sizeof(c[z]))) {
72        TEST_info("CAST_ENCRYPT iteration %d failed (len=%d)", z, k_len[z]);
73        testresult = 0;
74    }
75
76    CAST_ecb_encrypt(out, out, &key, CAST_DECRYPT);
77    if (!TEST_mem_eq(out, sizeof(in), in, sizeof(in))) {
78        TEST_info("CAST_DECRYPT iteration %d failed (len=%d)", z, k_len[z]);
79        testresult = 0;
80    }
81    return testresult;
82}
83
84static int cast_test_iterations(void)
85{
86    long l;
87    int testresult = 1;
88    CAST_KEY key, key_b;
89    unsigned char out_a[16], out_b[16];
90
91    memcpy(out_a, in_a, sizeof(in_a));
92    memcpy(out_b, in_b, sizeof(in_b));
93
94    for (l = 0; l < 1000000L; l++) {
95        CAST_set_key(&key_b, 16, out_b);
96        CAST_ecb_encrypt(&(out_a[0]), &(out_a[0]), &key_b, CAST_ENCRYPT);
97        CAST_ecb_encrypt(&(out_a[8]), &(out_a[8]), &key_b, CAST_ENCRYPT);
98        CAST_set_key(&key, 16, out_a);
99        CAST_ecb_encrypt(&(out_b[0]), &(out_b[0]), &key, CAST_ENCRYPT);
100        CAST_ecb_encrypt(&(out_b[8]), &(out_b[8]), &key, CAST_ENCRYPT);
101    }
102
103    if (!TEST_mem_eq(out_a, sizeof(c_a), c_a, sizeof(c_a))
104            || !TEST_mem_eq(out_b, sizeof(c_b), c_b, sizeof(c_b)))
105        testresult = 0;
106
107    return testresult;
108}
109#endif
110
111int setup_tests(void)
112{
113#ifndef OPENSSL_NO_CAST
114    ADD_ALL_TESTS(cast_test_vector, OSSL_NELEM(k_len));
115    ADD_TEST(cast_test_iterations);
116#endif
117    return 1;
118}
119