diff options
Diffstat (limited to 'bsd-arc4random.c')
-rw-r--r-- | bsd-arc4random.c | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/bsd-arc4random.c b/bsd-arc4random.c deleted file mode 100644 index c45459f59..000000000 --- a/bsd-arc4random.c +++ /dev/null | |||
@@ -1,71 +0,0 @@ | |||
1 | /* | ||
2 | * Copyright (c) 1999-2000 Damien Miller. All rights reserved. | ||
3 | * | ||
4 | * Redistribution and use in source and binary forms, with or without | ||
5 | * modification, are permitted provided that the following conditions | ||
6 | * are met: | ||
7 | * 1. Redistributions of source code must retain the above copyright | ||
8 | * notice, this list of conditions and the following disclaimer. | ||
9 | * 2. Redistributions in binary form must reproduce the above copyright | ||
10 | * notice, this list of conditions and the following disclaimer in the | ||
11 | * documentation and/or other materials provided with the distribution. | ||
12 | * | ||
13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | ||
14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | ||
15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | ||
16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||
22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
23 | */ | ||
24 | |||
25 | #include "includes.h" | ||
26 | |||
27 | #ifndef HAVE_ARC4RANDOM | ||
28 | |||
29 | #include <openssl/rand.h> | ||
30 | #include <openssl/rc4.h> | ||
31 | |||
32 | /* Size of key to use */ | ||
33 | #define SEED_SIZE 20 | ||
34 | |||
35 | /* Number of bytes to reseed after */ | ||
36 | #define REKEY_BYTES (1 << 24) | ||
37 | |||
38 | static int rc4_ready = 0; | ||
39 | static RC4_KEY rc4; | ||
40 | |||
41 | unsigned int arc4random(void) | ||
42 | { | ||
43 | unsigned int r = 0; | ||
44 | |||
45 | if (rc4_ready <= 0) | ||
46 | arc4random_stir(); | ||
47 | |||
48 | RC4(&rc4, sizeof(r), (unsigned char *)&r, (unsigned char *)&r); | ||
49 | |||
50 | rc4_ready -= sizeof(r); | ||
51 | |||
52 | return(r); | ||
53 | } | ||
54 | |||
55 | void arc4random_stir(void) | ||
56 | { | ||
57 | unsigned char rand_buf[SEED_SIZE]; | ||
58 | |||
59 | memset(&rc4, 0, sizeof(rc4)); | ||
60 | |||
61 | seed_rng(); | ||
62 | |||
63 | RAND_bytes(rand_buf, sizeof(rand_buf)); | ||
64 | |||
65 | RC4_set_key(&rc4, sizeof(rand_buf), rand_buf); | ||
66 | |||
67 | memset(rand_buf, 0, sizeof(rand_buf)); | ||
68 | |||
69 | rc4_ready = REKEY_BYTES; | ||
70 | } | ||
71 | #endif /* !HAVE_ARC4RANDOM */ | ||