bf513f6958
hashing scheme used in Microsoft's NT machines. IT IS NOT SECURE! DON'T USE IT! This is for the use of competent sysadmins only! Submitted by: Michael Bretterklieber
132 lines
3.0 KiB
C
132 lines
3.0 KiB
C
/*
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* Copyright (c) 1999
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* Mark Murray. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY MARK MURRAY AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL MARK MURRAY OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <string.h>
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#include <libutil.h>
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#include <unistd.h>
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#include "crypt.h"
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static const struct {
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const char *const name;
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char *(*const func)(const char *, const char *);
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const char *const magic;
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} crypt_types[] = {
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#ifdef HAS_DES
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{
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"des",
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crypt_des,
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NULL
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},
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#endif
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{
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"md5",
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crypt_md5,
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"$1$"
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},
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#ifdef HAS_BLOWFISH
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{
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"blf",
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crypt_blowfish,
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"$2"
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},
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#endif
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{
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"nth",
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crypt_nthash,
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"$3$"
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},
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{
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NULL,
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NULL,
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NULL
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}
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};
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static int crypt_type = -1;
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static void
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crypt_setdefault(void)
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{
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char *def;
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size_t i;
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if (crypt_type != -1)
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return;
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def = auth_getval("crypt_default");
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if (def == NULL) {
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crypt_type = 0;
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return;
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}
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for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) {
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if (strcmp(def, crypt_types[i].name) == 0) {
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crypt_type = (int)i;
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return;
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}
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}
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crypt_type = 0;
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}
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const char *
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crypt_get_format(void)
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{
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crypt_setdefault();
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return (crypt_types[crypt_type].name);
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}
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int
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crypt_set_format(const char *type)
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{
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size_t i;
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crypt_setdefault();
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for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) {
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if (strcmp(type, crypt_types[i].name) == 0) {
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crypt_type = (int)i;
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return (1);
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}
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}
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return (0);
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}
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char *
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crypt(const char *passwd, const char *salt)
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{
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size_t i;
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crypt_setdefault();
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for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) {
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if (crypt_types[i].magic != NULL && strncmp(salt,
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crypt_types[i].magic, strlen(crypt_types[i].magic)) == 0)
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return (crypt_types[i].func(passwd, salt));
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}
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return (crypt_types[crypt_type].func(passwd, salt));
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}
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