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 * BF low level APIs are deprecated for public use, but still ok for internal
12 * use.
13 */
14 #include "internal/deprecated.h"
15
16 #include <stdio.h>
17 #include <string.h>
18 #include <openssl/blowfish.h>
19 #include "bf_local.h"
20 #include "bf_pi.h"
21
BF_set_key(BF_KEY * key,int len,const unsigned char * data)22 void BF_set_key(BF_KEY *key, int len, const unsigned char *data)
23 {
24 int i;
25 BF_LONG *p, ri, in[2];
26 const unsigned char *d, *end;
27
28 memcpy(key, &bf_init, sizeof(BF_KEY));
29 p = key->P;
30
31 if (len > ((BF_ROUNDS + 2) * 4))
32 len = (BF_ROUNDS + 2) * 4;
33
34 d = data;
35 end = &(data[len]);
36 for (i = 0; i < (BF_ROUNDS + 2); i++) {
37 ri = *(d++);
38 if (d >= end)
39 d = data;
40
41 ri <<= 8;
42 ri |= *(d++);
43 if (d >= end)
44 d = data;
45
46 ri <<= 8;
47 ri |= *(d++);
48 if (d >= end)
49 d = data;
50
51 ri <<= 8;
52 ri |= *(d++);
53 if (d >= end)
54 d = data;
55
56 p[i] ^= ri;
57 }
58
59 in[0] = 0L;
60 in[1] = 0L;
61 for (i = 0; i < (BF_ROUNDS + 2); i += 2) {
62 BF_encrypt(in, key);
63 p[i] = in[0];
64 p[i + 1] = in[1];
65 }
66
67 p = key->S;
68 for (i = 0; i < 4 * 256; i += 2) {
69 BF_encrypt(in, key);
70 p[i] = in[0];
71 p[i + 1] = in[1];
72 }
73 }
74
