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
16void 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