1 | /* |
---|---|
2 | * Copyright 1995-2016 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 | #include <stdio.h> |
11 | #include <string.h> |
12 | #include <openssl/blowfish.h> |
13 | #include "bf_local.h" |
14 | #include "bf_pi.h" |
15 | |
16 | void BF_set_key(BF_KEY *key, int len, const unsigned char *data) |
17 | { |
18 | int i; |
19 | BF_LONG *p, ri, in[2]; |
20 | const unsigned char *d, *end; |
21 | |
22 | memcpy(key, &bf_init, sizeof(BF_KEY)); |
23 | p = key->P; |
24 | |
25 | if (len > ((BF_ROUNDS + 2) * 4)) |
26 | len = (BF_ROUNDS + 2) * 4; |
27 | |
28 | d = data; |
29 | end = &(data[len]); |
30 | for (i = 0; i < (BF_ROUNDS + 2); i++) { |
31 | ri = *(d++); |
32 | if (d >= end) |
33 | d = data; |
34 | |
35 | ri <<= 8; |
36 | ri |= *(d++); |
37 | if (d >= end) |
38 | d = data; |
39 | |
40 | ri <<= 8; |
41 | ri |= *(d++); |
42 | if (d >= end) |
43 | d = data; |
44 | |
45 | ri <<= 8; |
46 | ri |= *(d++); |
47 | if (d >= end) |
48 | d = data; |
49 | |
50 | p[i] ^= ri; |
51 | } |
52 | |
53 | in[0] = 0L; |
54 | in[1] = 0L; |
55 | for (i = 0; i < (BF_ROUNDS + 2); i += 2) { |
56 | BF_encrypt(in, key); |
57 | p[i] = in[0]; |
58 | p[i + 1] = in[1]; |
59 | } |
60 | |
61 | p = key->S; |
62 | for (i = 0; i < 4 * 256; i += 2) { |
63 | BF_encrypt(in, key); |
64 | p[i] = in[0]; |
65 | p[i + 1] = in[1]; |
66 | } |
67 | } |
68 |