1 /*
2 * Copyright 1995-2024 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
27 static unsigned char k[16] = {
28 0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78,
29 0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A
30 };
31
32 static unsigned char in[8] = {
33 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF
34 };
35
36 static int k_len[3] = { 16, 10, 5 };
37
38 static unsigned char c[3][8] = {
39 {0x23, 0x8B, 0x4F, 0xE5, 0x84, 0x7E, 0x44, 0xB2},
40 {0xEB, 0x6A, 0x71, 0x1A, 0x2C, 0x02, 0x27, 0x1B},
41 {0x7A, 0xC8, 0x16, 0xD1, 0x6E, 0x9B, 0x30, 0x2E},
42 };
43
44 static unsigned char in_a[16] = {
45 0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78,
46 0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A
47 };
48
49 static unsigned char in_b[16] = {
50 0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78,
51 0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A
52 };
53
54 static unsigned char c_a[16] = {
55 0xEE, 0xA9, 0xD0, 0xA2, 0x49, 0xFD, 0x3B, 0xA6,
56 0xB3, 0x43, 0x6F, 0xB8, 0x9D, 0x6D, 0xCA, 0x92
57 };
58
59 static unsigned char c_b[16] = {
60 0xB2, 0xC9, 0x5E, 0xB0, 0x0C, 0x31, 0xAD, 0x71,
61 0x80, 0xAC, 0x05, 0xB8, 0xE8, 0x3D, 0x69, 0x6E
62 };
63
cast_test_vector(int z)64 static int cast_test_vector(int z)
65 {
66 int testresult = 1;
67 CAST_KEY key;
68 unsigned char out[80];
69
70 CAST_set_key(&key, k_len[z], k);
71 CAST_ecb_encrypt(in, out, &key, CAST_ENCRYPT);
72 if (!TEST_mem_eq(out, sizeof(c[z]), c[z], sizeof(c[z]))) {
73 TEST_info("CAST_ENCRYPT iteration %d failed (len=%d)", z, k_len[z]);
74 testresult = 0;
75 }
76
77 CAST_ecb_encrypt(out, out, &key, CAST_DECRYPT);
78 if (!TEST_mem_eq(out, sizeof(in), in, sizeof(in))) {
79 TEST_info("CAST_DECRYPT iteration %d failed (len=%d)", z, k_len[z]);
80 testresult = 0;
81 }
82 return testresult;
83 }
84
cast_test_iterations(void)85 static int cast_test_iterations(void)
86 {
87 long l;
88 int testresult = 1;
89 CAST_KEY key, key_b;
90 unsigned char out_a[16], out_b[16];
91
92 memcpy(out_a, in_a, sizeof(in_a));
93 memcpy(out_b, in_b, sizeof(in_b));
94
95 for (l = 0; l < 1000000L; l++) {
96 CAST_set_key(&key_b, 16, out_b);
97 CAST_ecb_encrypt(&(out_a[0]), &(out_a[0]), &key_b, CAST_ENCRYPT);
98 CAST_ecb_encrypt(&(out_a[8]), &(out_a[8]), &key_b, CAST_ENCRYPT);
99 CAST_set_key(&key, 16, out_a);
100 CAST_ecb_encrypt(&(out_b[0]), &(out_b[0]), &key, CAST_ENCRYPT);
101 CAST_ecb_encrypt(&(out_b[8]), &(out_b[8]), &key, CAST_ENCRYPT);
102 }
103
104 if (!TEST_mem_eq(out_a, sizeof(c_a), c_a, sizeof(c_a))
105 || !TEST_mem_eq(out_b, sizeof(c_b), c_b, sizeof(c_b)))
106 testresult = 0;
107
108 return testresult;
109 }
110 #endif
111
setup_tests(void)112 int setup_tests(void)
113 {
114 #ifndef OPENSSL_NO_CAST
115 ADD_ALL_TESTS(cast_test_vector, OSSL_NELEM(k_len));
116 ADD_TEST(cast_test_iterations);
117 #endif
118 return 1;
119 }
120
