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 * RC4 and SHA-1 low level APIs are deprecated for public use, but still ok for
12 * internal use.
13 */
14#include "internal/deprecated.h"
15
16#include <string.h>
17
18#include "internal/nelem.h"
19#include "testutil.h"
20
21#ifndef OPENSSL_NO_RC4
22# include <openssl/rc4.h>
23# include <openssl/sha.h>
24
25static unsigned char keys[6][30] = {
26    {8, 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
27    {8, 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
28    {8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
29    {4, 0xef, 0x01, 0x23, 0x45},
30    {8, 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef},
31    {4, 0xef, 0x01, 0x23, 0x45},
32};
33
34static unsigned char data_len[6] = { 8, 8, 8, 20, 28, 10 };
35
36static unsigned char data[6][30] = {
37    {0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xff},
38    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff},
39    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff},
40    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
41     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
42     0x00, 0x00, 0x00, 0x00, 0xff},
43    {0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0,
44     0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0,
45     0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE, 0xF0,
46     0x12, 0x34, 0x56, 0x78, 0xff},
47    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff},
48};
49
50static unsigned char output[6][30] = {
51    {0x75, 0xb7, 0x87, 0x80, 0x99, 0xe0, 0xc5, 0x96, 0x00},
52    {0x74, 0x94, 0xc2, 0xe7, 0x10, 0x4b, 0x08, 0x79, 0x00},
53    {0xde, 0x18, 0x89, 0x41, 0xa3, 0x37, 0x5d, 0x3a, 0x00},
54    {0xd6, 0xa1, 0x41, 0xa7, 0xec, 0x3c, 0x38, 0xdf,
55     0xbd, 0x61, 0x5a, 0x11, 0x62, 0xe1, 0xc7, 0xba,
56     0x36, 0xb6, 0x78, 0x58, 0x00},
57    {0x66, 0xa0, 0x94, 0x9f, 0x8a, 0xf7, 0xd6, 0x89,
58     0x1f, 0x7f, 0x83, 0x2b, 0xa8, 0x33, 0xc0, 0x0c,
59     0x89, 0x2e, 0xbe, 0x30, 0x14, 0x3c, 0xe2, 0x87,
60     0x40, 0x01, 0x1e, 0xcf, 0x00},
61    {0xd6, 0xa1, 0x41, 0xa7, 0xec, 0x3c, 0x38, 0xdf, 0xbd, 0x61, 0x00},
62};
63
64static int test_rc4_encrypt(const int i)
65{
66    unsigned char obuf[512];
67    RC4_KEY key;
68
69    RC4_set_key(&key, keys[i][0], &(keys[i][1]));
70    memset(obuf, 0, sizeof(obuf));
71    RC4(&key, data_len[i], &(data[i][0]), obuf);
72    return TEST_mem_eq(obuf, data_len[i] + 1, output[i], data_len[i] + 1);
73}
74
75static int test_rc4_end_processing(const int i)
76{
77    unsigned char obuf[512];
78    RC4_KEY key;
79
80    RC4_set_key(&key, keys[3][0], &(keys[3][1]));
81    memset(obuf, 0, sizeof(obuf));
82    RC4(&key, i, &(data[3][0]), obuf);
83    if (!TEST_mem_eq(obuf, i, output[3], i))
84        return 0;
85    return TEST_uchar_eq(obuf[i], 0);
86}
87
88static int test_rc4_multi_call(const int i)
89{
90    unsigned char obuf[512];
91    RC4_KEY key;
92
93    RC4_set_key(&key, keys[3][0], &(keys[3][1]));
94    memset(obuf, 0, sizeof(obuf));
95    RC4(&key, i, &(data[3][0]), obuf);
96    RC4(&key, data_len[3] - i, &(data[3][i]), &(obuf[i]));
97    return TEST_mem_eq(obuf, data_len[3] + 1, output[3], data_len[3] + 1);
98}
99
100static int test_rc_bulk(void)
101{
102    RC4_KEY key;
103    unsigned char buf[513];
104    SHA_CTX c;
105    unsigned char md[SHA_DIGEST_LENGTH];
106    int i;
107    static unsigned char expected[] = {
108        0xa4, 0x7b, 0xcc, 0x00, 0x3d, 0xd0, 0xbd, 0xe1, 0xac, 0x5f,
109        0x12, 0x1e, 0x45, 0xbc, 0xfb, 0x1a, 0xa1, 0xf2, 0x7f, 0xc5
110    };
111
112    RC4_set_key(&key, keys[0][0], &(keys[3][1]));
113    memset(buf, 0, sizeof(buf));
114    SHA1_Init(&c);
115    for (i = 0; i < 2571; i++) {
116        RC4(&key, sizeof(buf), buf, buf);
117        SHA1_Update(&c, buf, sizeof(buf));
118    }
119    SHA1_Final(md, &c);
120
121    return TEST_mem_eq(md, sizeof(md), expected, sizeof(expected));
122}
123#endif
124
125int setup_tests(void)
126{
127#ifndef OPENSSL_NO_RC4
128    ADD_ALL_TESTS(test_rc4_encrypt, OSSL_NELEM(data_len));
129    ADD_ALL_TESTS(test_rc4_end_processing, data_len[3]);
130    ADD_ALL_TESTS(test_rc4_multi_call, data_len[3]);
131    ADD_TEST(test_rc_bulk);
132#endif
133    return 1;
134}
135