3 * Wrapper for various crypt algorithms.
5 * Copyright (c) 2001 Marko Kreen
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * contrib/pgcrypto/px-crypt.c
39 run_crypt_des(const char *psw, const char *salt,
40 char *buf, unsigned len)
44 res = px_crypt_des(psw, salt);
45 if (strlen(res) > len - 1)
52 run_crypt_md5(const char *psw, const char *salt,
53 char *buf, unsigned len)
57 res = px_crypt_md5(psw, salt, buf, len);
62 run_crypt_bf(const char *psw, const char *salt,
63 char *buf, unsigned len)
67 res = _crypt_blowfish_rn(psw, salt, buf, len);
75 char *(*crypt) (const char *psw, const char *salt,
76 char *buf, unsigned len);
79 static const struct px_crypt_algo
81 {"$2a$", 4, run_crypt_bf},
82 {"$2x$", 4, run_crypt_bf},
83 {"$2$", 3, NULL}, /* N/A */
84 {"$1$", 3, run_crypt_md5},
85 {"_", 1, run_crypt_des},
86 {"", 0, run_crypt_des},
91 px_crypt(const char *psw, const char *salt, char *buf, unsigned len)
93 const struct px_crypt_algo *c;
95 for (c = px_crypt_list; c->id; c++)
99 if (!strncmp(salt, c->id, c->id_len))
103 if (c->crypt == NULL)
106 return c->crypt(psw, salt, buf, len);
116 char *(*gen) (unsigned long count, const char *input, int size,
117 char *output, int output_size);
124 static struct generator gen_list[] = {
125 {"des", _crypt_gensalt_traditional_rn, 2, 0, 0, 0},
126 {"md5", _crypt_gensalt_md5_rn, 6, 0, 0, 0},
127 {"xdes", _crypt_gensalt_extended_rn, 3, PX_XDES_ROUNDS, 1, 0xFFFFFF},
128 {"bf", _crypt_gensalt_blowfish_rn, 16, PX_BF_ROUNDS, 4, 31},
129 {NULL, NULL, 0, 0, 0, 0}
133 px_gen_salt(const char *salt_type, char *buf, int rounds)
140 for (g = gen_list; g->name; g++)
141 if (pg_strcasecmp(g->name, salt_type) == 0)
145 return PXE_UNKNOWN_SALT_ALGO;
150 rounds = g->def_rounds;
152 if (rounds < g->min_rounds || rounds > g->max_rounds)
153 return PXE_BAD_SALT_ROUNDS;
156 res = px_get_pseudo_random_bytes((uint8 *) rbuf, g->input_len);
160 p = g->gen(rounds, rbuf, g->input_len, buf, PX_MAX_SALT_LEN);
161 memset(rbuf, 0, sizeof(rbuf));
164 return PXE_BAD_SALT_ROUNDS;