Annotation of /tags/mkinitrd-6_1_12/busybox/libbb/pw_encrypt.c
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Tue Nov 17 21:24:51 2009 UTC (14 years, 10 months ago) by niro
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Tue Nov 17 21:24:51 2009 UTC (14 years, 10 months ago) by niro
File MIME type: text/plain
File size: 1843 byte(s)
tagged 'mkinitrd-6_1_12'
1 | niro | 532 | /* vi: set sw=4 ts=4: */ |
2 | /* | ||
3 | * Utility routine. | ||
4 | * | ||
5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> | ||
6 | * | ||
7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. | ||
8 | */ | ||
9 | |||
10 | #include "libbb.h" | ||
11 | |||
12 | niro | 816 | #if ENABLE_USE_BB_CRYPT |
13 | |||
14 | /* | ||
15 | * DES and MD5 crypt implementations are taken from uclibc. | ||
16 | * They were modified to not use static buffers. | ||
17 | */ | ||
18 | /* Common for them */ | ||
19 | static const uint8_t ascii64[] = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; | ||
20 | #include "pw_encrypt_des.c" | ||
21 | #include "pw_encrypt_md5.c" | ||
22 | |||
23 | /* Other advanced crypt ids: */ | ||
24 | /* $2$ or $2a$: Blowfish */ | ||
25 | /* $5$: SHA-256 */ | ||
26 | /* $6$: SHA-512 */ | ||
27 | /* TODO: implement SHA - http://people.redhat.com/drepper/SHA-crypt.txt */ | ||
28 | |||
29 | static struct const_des_ctx *des_cctx; | ||
30 | static struct des_ctx *des_ctx; | ||
31 | |||
32 | /* my_crypt returns malloc'ed data */ | ||
33 | static char *my_crypt(const char *key, const char *salt) | ||
34 | niro | 532 | { |
35 | niro | 816 | /* First, check if we are supposed to be using the MD5 replacement |
36 | * instead of DES... */ | ||
37 | if (salt[0] == '$' && salt[1] == '1' && salt[2] == '$') { | ||
38 | return md5_crypt(xzalloc(MD5_OUT_BUFSIZE), (unsigned char*)key, (unsigned char*)salt); | ||
39 | } | ||
40 | niro | 532 | |
41 | niro | 816 | { |
42 | if (!des_cctx) | ||
43 | des_cctx = const_des_init(); | ||
44 | des_ctx = des_init(des_ctx, des_cctx); | ||
45 | return des_crypt(des_ctx, xzalloc(DES_OUT_BUFSIZE), (unsigned char*)key, (unsigned char*)salt); | ||
46 | niro | 532 | } |
47 | niro | 816 | } |
48 | |||
49 | /* So far nobody wants to have it public */ | ||
50 | static void my_crypt_cleanup(void) | ||
51 | { | ||
52 | free(des_cctx); | ||
53 | free(des_ctx); | ||
54 | des_cctx = NULL; | ||
55 | des_ctx = NULL; | ||
56 | } | ||
57 | |||
58 | char* FAST_FUNC pw_encrypt(const char *clear, const char *salt, int cleanup) | ||
59 | { | ||
60 | char *encrypted; | ||
61 | |||
62 | encrypted = my_crypt(clear, salt); | ||
63 | |||
64 | if (cleanup) | ||
65 | my_crypt_cleanup(); | ||
66 | |||
67 | return encrypted; | ||
68 | } | ||
69 | |||
70 | #else /* if !ENABLE_USE_BB_CRYPT */ | ||
71 | |||
72 | char* FAST_FUNC pw_encrypt(const char *clear, const char *salt, int cleanup) | ||
73 | { | ||
74 | return xstrdup(crypt(clear, salt)); | ||
75 | } | ||
76 | |||
77 | niro | 532 | #endif |