uclibc insists on having 70k static buffer for crypt.
For bbox it's not acceptable. Roll our own des and md5 crypt implementation. Against older uclibc: text data bss dec hex filename 759945 604 6684 767233 bb501 busybox_old 759766 604 6684 767054 bb44e busybox_unstripped so, we still save on code size.
This commit is contained in:
Denis Vlasenko
parent
9de4622055
commit
4ea83bf562
@ -1032,8 +1032,19 @@ extern int restricted_shell(const char *shell);
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extern void setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw);
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extern void setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw);
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extern int correct_password(const struct passwd *pw);
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extern int correct_password(const struct passwd *pw);
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/* Returns a ptr to static storage */
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/* Returns a ptr to static storage */
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extern char *pw_encrypt(const char *clear, const char *salt);
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extern char *pw_encrypt(const char *clear, const char *salt, int cleanup);
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extern int obscure(const char *old, const char *newval, const struct passwd *pwdp);
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extern int obscure(const char *old, const char *newval, const struct passwd *pwdp);
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/* rnd is additional random input. New one is returned.
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* Useful if you call crypt_make_salt many times in a row:
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* rnd = crypt_make_salt(buf1, 4, 0);
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* rnd = crypt_make_salt(buf2, 4, rnd);
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* rnd = crypt_make_salt(buf3, 4, rnd);
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* (otherwise we risk having same salt generated)
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*/
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extern int crypt_make_salt(char *p, int cnt, int rnd);
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/* Returns number of lines changed, or -1 on error */
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extern int update_passwd(const char *filename, const char *username,
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const char *new_pw);
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int index_in_str_array(const char *const string_array[], const char *key);
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int index_in_str_array(const char *const string_array[], const char *key);
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int index_in_strings(const char *strings, const char *key);
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int index_in_strings(const char *strings, const char *key);
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@ -1044,19 +1055,6 @@ const char *nth_string(const char *strings, int n);
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extern void print_login_issue(const char *issue_file, const char *tty);
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extern void print_login_issue(const char *issue_file, const char *tty);
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extern void print_login_prompt(void);
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extern void print_login_prompt(void);
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/* rnd is additional random input. New one is returned.
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* Useful if you call crypt_make_salt many times in a row:
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* rnd = crypt_make_salt(buf1, 4, 0);
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* rnd = crypt_make_salt(buf2, 4, rnd);
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* rnd = crypt_make_salt(buf3, 4, rnd);
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* (otherwise we risk having same salt generated)
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*/
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extern int crypt_make_salt(char *p, int cnt, int rnd);
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/* Returns number of lines changed, or -1 on error */
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extern int update_passwd(const char *filename, const char *username,
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const char *new_pw);
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/* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */
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/* NB: typically you want to pass fd 0, not 1. Think 'applet | grep something' */
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int get_terminal_width_height(int fd, unsigned *width, unsigned *height);
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int get_terminal_width_height(int fd, unsigned *width, unsigned *height);
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@ -71,7 +71,7 @@ int correct_password(const struct passwd *pw)
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if (!unencrypted) {
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if (!unencrypted) {
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return 0;
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return 0;
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}
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}
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encrypted = crypt(unencrypted, correct);
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encrypted = pw_encrypt(unencrypted, correct, 1);
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memset(unencrypted, 0, strlen(unencrypted));
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memset(unencrypted, 0, strlen(unencrypted));
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return strcmp(encrypted, correct) == 0;
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return strcmp(encrypted, correct) == 0;
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}
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}
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@ -8,11 +8,52 @@
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*/
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*/
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#include "libbb.h"
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#include "libbb.h"
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#include <crypt.h>
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char *pw_encrypt(const char *clear, const char *salt)
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/*
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* DES and MD5 crypt implementations are taken from uclibc.
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* They were modified to not use static buffers.
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* Comparison with uclibc (before uclibc had 70k staic buffers reinstated):
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* text data bss dec hex filename
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* 759909 604 6684 767197 bb4dd busybox_old
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* 759579 604 6684 766867 bb393 busybox_unstripped
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*/
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/* Common for them */
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static const uint8_t ascii64[] = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
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#include "pw_encrypt_des.c"
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#include "pw_encrypt_md5.c"
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static struct const_des_ctx *des_cctx;
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static struct des_ctx *des_ctx;
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/* my_crypt returns malloc'ed data */
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static char *my_crypt(const char *key, const char *salt)
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{
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/* First, check if we are supposed to be using the MD5 replacement
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* instead of DES... */
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if (salt[0] == '$' && salt[1] == '1' && salt[2] == '$') {
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return md5_crypt(xzalloc(MD5_OUT_BUFSIZE), (unsigned char*)key, (unsigned char*)salt);
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}
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{
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if (!des_cctx)
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des_cctx = const_des_init();
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des_ctx = des_init(des_ctx, des_cctx);
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return des_crypt(des_ctx, xzalloc(DES_OUT_BUFSIZE), (unsigned char*)key, (unsigned char*)salt);
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}
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}
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/* So far nobody wants to have it public */
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static void my_crypt_cleanup(void)
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{
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free(des_cctx);
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free(des_ctx);
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des_cctx = NULL;
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des_ctx = NULL;
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}
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char *pw_encrypt(const char *clear, const char *salt, int cleanup)
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{
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{
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/* Was static char[BIGNUM]. Malloced thing works as well */
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static char *cipher;
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static char *cipher;
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#if 0 /* was CONFIG_FEATURE_SHA1_PASSWORDS, but there is no such thing??? */
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#if 0 /* was CONFIG_FEATURE_SHA1_PASSWORDS, but there is no such thing??? */
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@ -22,6 +63,10 @@ char *pw_encrypt(const char *clear, const char *salt)
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#endif
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#endif
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free(cipher);
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free(cipher);
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cipher = xstrdup(crypt(clear, salt));
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cipher = my_crypt(clear, salt);
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if (cleanup)
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my_crypt_cleanup();
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return cipher;
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return cipher;
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}
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}
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703
libbb/pw_encrypt_des.c
Normal file
703
libbb/pw_encrypt_des.c
Normal file
@ -0,0 +1,703 @@
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/*
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* FreeSec: libcrypt for NetBSD
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*
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* Copyright (c) 1994 David Burren
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* All rights reserved.
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*
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* Adapted for FreeBSD-2.0 by Geoffrey M. Rehmet
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* this file should now *only* export crypt(), in order to make
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* binaries of libcrypt exportable from the USA
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*
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* Adapted for FreeBSD-4.0 by Mark R V Murray
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* this file should now *only* export crypt_des(), in order to make
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* a module that can be optionally included in libcrypt.
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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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* 3. Neither the name of the author nor the names of other contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR 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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* This is an original implementation of the DES and the crypt(3) interfaces
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* by David Burren <davidb@werj.com.au>.
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*
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* An excellent reference on the underlying algorithm (and related
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* algorithms) is:
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*
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* B. Schneier, Applied Cryptography: protocols, algorithms,
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* and source code in C, John Wiley & Sons, 1994.
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*
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* Note that in that book's description of DES the lookups for the initial,
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* pbox, and final permutations are inverted (this has been brought to the
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* attention of the author). A list of errata for this book has been
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* posted to the sci.crypt newsgroup by the author and is available for FTP.
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*
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* ARCHITECTURE ASSUMPTIONS:
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* It is assumed that the 8-byte arrays passed by reference can be
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* addressed as arrays of uint32_t's (ie. the CPU is not picky about
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* alignment).
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*/
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/* A pile of data */
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static const uint8_t IP[64] = {
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58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4,
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62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8,
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57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3,
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61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7
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};
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static const uint8_t key_perm[56] = {
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57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18,
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10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36,
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63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22,
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14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4
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};
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static const uint8_t key_shifts[16] = {
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1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
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};
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static const uint8_t comp_perm[48] = {
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14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21, 10,
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23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2,
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41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48,
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44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32
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};
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/*
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* No E box is used, as it's replaced by some ANDs, shifts, and ORs.
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*/
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static const uint8_t sbox[8][64] = {
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{
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14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7,
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0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8,
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4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0,
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15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13
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},
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{
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15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10,
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3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5,
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0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15,
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13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9
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},
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{
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10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8,
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13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1,
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13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7,
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1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12
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},
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{
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7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15,
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13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9,
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10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4,
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3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14
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},
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{
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2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9,
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14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6,
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4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14,
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11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3
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},
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{
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12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11,
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10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8,
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9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6,
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4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13
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},
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{
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4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1,
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13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6,
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1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2,
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6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12
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},
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{
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13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7,
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1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2,
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7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8,
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2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11
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}
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};
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static const uint8_t pbox[32] = {
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16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10,
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2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25
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};
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static const uint32_t bits32[32] =
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{
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0x80000000, 0x40000000, 0x20000000, 0x10000000,
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0x08000000, 0x04000000, 0x02000000, 0x01000000,
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0x00800000, 0x00400000, 0x00200000, 0x00100000,
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0x00080000, 0x00040000, 0x00020000, 0x00010000,
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0x00008000, 0x00004000, 0x00002000, 0x00001000,
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0x00000800, 0x00000400, 0x00000200, 0x00000100,
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0x00000080, 0x00000040, 0x00000020, 0x00000010,
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0x00000008, 0x00000004, 0x00000002, 0x00000001
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};
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static const uint8_t bits8[8] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
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static int
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ascii_to_bin(char ch)
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{
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if (ch > 'z')
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return 0;
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if (ch >= 'a')
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return (ch - 'a' + 38);
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if (ch > 'Z')
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return 0;
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if (ch >= 'A')
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return (ch - 'A' + 12);
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if (ch > '9')
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return 0;
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if (ch >= '.')
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return (ch - '.');
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return 0;
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}
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/* Static stuff that stays resident and doesn't change after
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* being initialized, and therefore doesn't need to be made
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* reentrant. */
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struct const_des_ctx {
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uint8_t init_perm[64], final_perm[64]; /* referenced 2 times each */
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uint8_t m_sbox[4][4096]; /* 5 times */
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};
|
||||||
|
#define C (*cctx)
|
||||||
|
#define init_perm (C.init_perm )
|
||||||
|
#define final_perm (C.final_perm)
|
||||||
|
#define m_sbox (C.m_sbox )
|
||||||
|
|
||||||
|
static struct const_des_ctx*
|
||||||
|
const_des_init(void)
|
||||||
|
{
|
||||||
|
int i, j, b;
|
||||||
|
uint8_t u_sbox[8][64];
|
||||||
|
struct const_des_ctx *cctx;
|
||||||
|
|
||||||
|
cctx = xmalloc(sizeof(*cctx));
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Invert the S-boxes, reordering the input bits.
|
||||||
|
*/
|
||||||
|
for (i = 0; i < 8; i++) {
|
||||||
|
for (j = 0; j < 64; j++) {
|
||||||
|
b = (j & 0x20) | ((j & 1) << 4) | ((j >> 1) & 0xf);
|
||||||
|
u_sbox[i][j] = sbox[i][b];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Convert the inverted S-boxes into 4 arrays of 8 bits.
|
||||||
|
* Each will handle 12 bits of the S-box input.
|
||||||
|
*/
|
||||||
|
for (b = 0; b < 4; b++)
|
||||||
|
for (i = 0; i < 64; i++)
|
||||||
|
for (j = 0; j < 64; j++)
|
||||||
|
m_sbox[b][(i << 6) | j] =
|
||||||
|
(uint8_t)((u_sbox[(b << 1)][i] << 4) |
|
||||||
|
u_sbox[(b << 1) + 1][j]);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Set up the initial & final permutations into a useful form.
|
||||||
|
*/
|
||||||
|
for (i = 0; i < 64; i++) {
|
||||||
|
final_perm[i] = IP[i] - 1;
|
||||||
|
init_perm[final_perm[i]] = (uint8_t)i;
|
||||||
|
}
|
||||||
|
|
||||||
|
return cctx;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
struct des_ctx {
|
||||||
|
const struct const_des_ctx *const_ctx;
|
||||||
|
uint32_t saltbits; /* referenced 5 times */
|
||||||
|
uint32_t old_salt; /* 3 times */
|
||||||
|
uint32_t old_rawkey0, old_rawkey1; /* 3 times each */
|
||||||
|
uint8_t un_pbox[32]; /* 2 times */
|
||||||
|
uint8_t inv_comp_perm[56]; /* 3 times */
|
||||||
|
uint8_t inv_key_perm[64]; /* 3 times */
|
||||||
|
uint32_t en_keysl[16], en_keysr[16]; /* 2 times each */
|
||||||
|
uint32_t de_keysl[16], de_keysr[16]; /* 2 times each */
|
||||||
|
uint32_t ip_maskl[8][256], ip_maskr[8][256]; /* 9 times each */
|
||||||
|
uint32_t fp_maskl[8][256], fp_maskr[8][256]; /* 9 times each */
|
||||||
|
uint32_t key_perm_maskl[8][128], key_perm_maskr[8][128]; /* 9 times */
|
||||||
|
uint32_t comp_maskl[8][128], comp_maskr[8][128]; /* 9 times each */
|
||||||
|
uint32_t psbox[4][256]; /* 5 times */
|
||||||
|
};
|
||||||
|
#define D (*ctx)
|
||||||
|
#define const_ctx (D.const_ctx )
|
||||||
|
#define saltbits (D.saltbits )
|
||||||
|
#define old_salt (D.old_salt )
|
||||||
|
#define old_rawkey0 (D.old_rawkey0 )
|
||||||
|
#define old_rawkey1 (D.old_rawkey1 )
|
||||||
|
#define un_pbox (D.un_pbox )
|
||||||
|
#define inv_comp_perm (D.inv_comp_perm )
|
||||||
|
#define inv_key_perm (D.inv_key_perm )
|
||||||
|
#define en_keysl (D.en_keysl )
|
||||||
|
#define en_keysr (D.en_keysr )
|
||||||
|
#define de_keysl (D.de_keysl )
|
||||||
|
#define de_keysr (D.de_keysr )
|
||||||
|
#define ip_maskl (D.ip_maskl )
|
||||||
|
#define ip_maskr (D.ip_maskr )
|
||||||
|
#define fp_maskl (D.fp_maskl )
|
||||||
|
#define fp_maskr (D.fp_maskr )
|
||||||
|
#define key_perm_maskl (D.key_perm_maskl )
|
||||||
|
#define key_perm_maskr (D.key_perm_maskr )
|
||||||
|
#define comp_maskl (D.comp_maskl )
|
||||||
|
#define comp_maskr (D.comp_maskr )
|
||||||
|
#define psbox (D.psbox )
|
||||||
|
|
||||||
|
static struct des_ctx*
|
||||||
|
des_init(struct des_ctx *ctx, const struct const_des_ctx *cctx)
|
||||||
|
{
|
||||||
|
int i, j, b, k, inbit, obit;
|
||||||
|
uint32_t *p, *il, *ir, *fl, *fr;
|
||||||
|
const uint32_t *bits28, *bits24;
|
||||||
|
|
||||||
|
if (!ctx)
|
||||||
|
ctx = xmalloc(sizeof(*ctx));
|
||||||
|
const_ctx = cctx;
|
||||||
|
|
||||||
|
old_rawkey0 = old_rawkey1 = 0L;
|
||||||
|
saltbits = 0L;
|
||||||
|
old_salt = 0L;
|
||||||
|
bits28 = bits32 + 4;
|
||||||
|
bits24 = bits28 + 4;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Initialise the inverted key permutation.
|
||||||
|
*/
|
||||||
|
for (i = 0; i < 64; i++) {
|
||||||
|
inv_key_perm[i] = 255;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Invert the key permutation and initialise the inverted key
|
||||||
|
* compression permutation.
|
||||||
|
*/
|
||||||
|
for (i = 0; i < 56; i++) {
|
||||||
|
inv_key_perm[key_perm[i] - 1] = (uint8_t)i;
|
||||||
|
inv_comp_perm[i] = 255;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Invert the key compression permutation.
|
||||||
|
*/
|
||||||
|
for (i = 0; i < 48; i++) {
|
||||||
|
inv_comp_perm[comp_perm[i] - 1] = (uint8_t)i;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Set up the OR-mask arrays for the initial and final permutations,
|
||||||
|
* and for the key initial and compression permutations.
|
||||||
|
*/
|
||||||
|
for (k = 0; k < 8; k++) {
|
||||||
|
for (i = 0; i < 256; i++) {
|
||||||
|
il = &ip_maskl[k][i];
|
||||||
|
ir = &ip_maskr[k][i];
|
||||||
|
fl = &fp_maskl[k][i];
|
||||||
|
fr = &fp_maskr[k][i];
|
||||||
|
*il = 0;
|
||||||
|
*ir = 0;
|
||||||
|
*fl = 0;
|
||||||
|
*fr = 0;
|
||||||
|
for (j = 0; j < 8; j++) {
|
||||||
|
inbit = 8 * k + j;
|
||||||
|
if (i & bits8[j]) {
|
||||||
|
obit = init_perm[inbit];
|
||||||
|
if (obit < 32)
|
||||||
|
*il |= bits32[obit];
|
||||||
|
else
|
||||||
|
*ir |= bits32[obit - 32];
|
||||||
|
obit = final_perm[inbit];
|
||||||
|
if (obit < 32)
|
||||||
|
*fl |= bits32[obit];
|
||||||
|
else
|
||||||
|
*fr |= bits32[obit - 32];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
for (i = 0; i < 128; i++) {
|
||||||
|
il = &key_perm_maskl[k][i];
|
||||||
|
ir = &key_perm_maskr[k][i];
|
||||||
|
*il = 0;
|
||||||
|
*ir = 0;
|
||||||
|
for (j = 0; j < 7; j++) {
|
||||||
|
inbit = 8 * k + j;
|
||||||
|
if (i & bits8[j + 1]) {
|
||||||
|
obit = inv_key_perm[inbit];
|
||||||
|
if (obit == 255)
|
||||||
|
continue;
|
||||||
|
if (obit < 28)
|
||||||
|
*il |= bits28[obit];
|
||||||
|
else
|
||||||
|
*ir |= bits28[obit - 28];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
il = &comp_maskl[k][i];
|
||||||
|
ir = &comp_maskr[k][i];
|
||||||
|
*il = 0;
|
||||||
|
*ir = 0;
|
||||||
|
for (j = 0; j < 7; j++) {
|
||||||
|
inbit = 7 * k + j;
|
||||||
|
if (i & bits8[j + 1]) {
|
||||||
|
obit = inv_comp_perm[inbit];
|
||||||
|
if (obit == 255)
|
||||||
|
continue;
|
||||||
|
if (obit < 24)
|
||||||
|
*il |= bits24[obit];
|
||||||
|
else
|
||||||
|
*ir |= bits24[obit - 24];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Invert the P-box permutation, and convert into OR-masks for
|
||||||
|
* handling the output of the S-box arrays setup above.
|
||||||
|
*/
|
||||||
|
for (i = 0; i < 32; i++)
|
||||||
|
un_pbox[pbox[i] - 1] = (uint8_t)i;
|
||||||
|
|
||||||
|
for (b = 0; b < 4; b++) {
|
||||||
|
for (i = 0; i < 256; i++) {
|
||||||
|
p = &psbox[b][i];
|
||||||
|
*p = 0;
|
||||||
|
for (j = 0; j < 8; j++) {
|
||||||
|
if (i & bits8[j])
|
||||||
|
*p |= bits32[un_pbox[8 * b + j]];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return ctx;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static void
|
||||||
|
setup_salt(struct des_ctx *ctx, uint32_t salt)
|
||||||
|
{
|
||||||
|
// const struct const_des_ctx *cctx = const_ctx;
|
||||||
|
uint32_t obit, saltbit;
|
||||||
|
int i;
|
||||||
|
|
||||||
|
if (salt == old_salt)
|
||||||
|
return;
|
||||||
|
old_salt = salt;
|
||||||
|
|
||||||
|
saltbits = 0L;
|
||||||
|
saltbit = 1;
|
||||||
|
obit = 0x800000;
|
||||||
|
for (i = 0; i < 24; i++) {
|
||||||
|
if (salt & saltbit)
|
||||||
|
saltbits |= obit;
|
||||||
|
saltbit <<= 1;
|
||||||
|
obit >>= 1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
des_setkey(struct des_ctx *ctx, const char *key)
|
||||||
|
{
|
||||||
|
// const struct const_des_ctx *cctx = const_ctx;
|
||||||
|
uint32_t k0, k1, rawkey0, rawkey1;
|
||||||
|
int shifts, round;
|
||||||
|
|
||||||
|
rawkey0 = ntohl(*(const uint32_t *) key);
|
||||||
|
rawkey1 = ntohl(*(const uint32_t *) (key + 4));
|
||||||
|
|
||||||
|
if ((rawkey0 | rawkey1)
|
||||||
|
&& rawkey0 == old_rawkey0
|
||||||
|
&& rawkey1 == old_rawkey1
|
||||||
|
) {
|
||||||
|
/*
|
||||||
|
* Already setup for this key.
|
||||||
|
* This optimisation fails on a zero key (which is weak and
|
||||||
|
* has bad parity anyway) in order to simplify the starting
|
||||||
|
* conditions.
|
||||||
|
*/
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
old_rawkey0 = rawkey0;
|
||||||
|
old_rawkey1 = rawkey1;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Do key permutation and split into two 28-bit subkeys.
|
||||||
|
*/
|
||||||
|
k0 = key_perm_maskl[0][rawkey0 >> 25]
|
||||||
|
| key_perm_maskl[1][(rawkey0 >> 17) & 0x7f]
|
||||||
|
| key_perm_maskl[2][(rawkey0 >> 9) & 0x7f]
|
||||||
|
| key_perm_maskl[3][(rawkey0 >> 1) & 0x7f]
|
||||||
|
| key_perm_maskl[4][rawkey1 >> 25]
|
||||||
|
| key_perm_maskl[5][(rawkey1 >> 17) & 0x7f]
|
||||||
|
| key_perm_maskl[6][(rawkey1 >> 9) & 0x7f]
|
||||||
|
| key_perm_maskl[7][(rawkey1 >> 1) & 0x7f];
|
||||||
|
k1 = key_perm_maskr[0][rawkey0 >> 25]
|
||||||
|
| key_perm_maskr[1][(rawkey0 >> 17) & 0x7f]
|
||||||
|
| key_perm_maskr[2][(rawkey0 >> 9) & 0x7f]
|
||||||
|
| key_perm_maskr[3][(rawkey0 >> 1) & 0x7f]
|
||||||
|
| key_perm_maskr[4][rawkey1 >> 25]
|
||||||
|
| key_perm_maskr[5][(rawkey1 >> 17) & 0x7f]
|
||||||
|
| key_perm_maskr[6][(rawkey1 >> 9) & 0x7f]
|
||||||
|
| key_perm_maskr[7][(rawkey1 >> 1) & 0x7f];
|
||||||
|
/*
|
||||||
|
* Rotate subkeys and do compression permutation.
|
||||||
|
*/
|
||||||
|
shifts = 0;
|
||||||
|
for (round = 0; round < 16; round++) {
|
||||||
|
uint32_t t0, t1;
|
||||||
|
|
||||||
|
shifts += key_shifts[round];
|
||||||
|
|
||||||
|
t0 = (k0 << shifts) | (k0 >> (28 - shifts));
|
||||||
|
t1 = (k1 << shifts) | (k1 >> (28 - shifts));
|
||||||
|
|
||||||
|
de_keysl[15 - round] =
|
||||||
|
en_keysl[round] = comp_maskl[0][(t0 >> 21) & 0x7f]
|
||||||
|
| comp_maskl[1][(t0 >> 14) & 0x7f]
|
||||||
|
| comp_maskl[2][(t0 >> 7) & 0x7f]
|
||||||
|
| comp_maskl[3][t0 & 0x7f]
|
||||||
|
| comp_maskl[4][(t1 >> 21) & 0x7f]
|
||||||
|
| comp_maskl[5][(t1 >> 14) & 0x7f]
|
||||||
|
| comp_maskl[6][(t1 >> 7) & 0x7f]
|
||||||
|
| comp_maskl[7][t1 & 0x7f];
|
||||||
|
|
||||||
|
de_keysr[15 - round] =
|
||||||
|
en_keysr[round] = comp_maskr[0][(t0 >> 21) & 0x7f]
|
||||||
|
| comp_maskr[1][(t0 >> 14) & 0x7f]
|
||||||
|
| comp_maskr[2][(t0 >> 7) & 0x7f]
|
||||||
|
| comp_maskr[3][t0 & 0x7f]
|
||||||
|
| comp_maskr[4][(t1 >> 21) & 0x7f]
|
||||||
|
| comp_maskr[5][(t1 >> 14) & 0x7f]
|
||||||
|
| comp_maskr[6][(t1 >> 7) & 0x7f]
|
||||||
|
| comp_maskr[7][t1 & 0x7f];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static int
|
||||||
|
do_des(struct des_ctx *ctx, uint32_t l_in, uint32_t r_in, uint32_t *l_out, uint32_t *r_out, int count)
|
||||||
|
{
|
||||||
|
const struct const_des_ctx *cctx = const_ctx;
|
||||||
|
/*
|
||||||
|
* l_in, r_in, l_out, and r_out are in pseudo-"big-endian" format.
|
||||||
|
*/
|
||||||
|
uint32_t l, r, *kl, *kr, *kl1, *kr1;
|
||||||
|
uint32_t f = f; /* silence gcc */
|
||||||
|
uint32_t r48l, r48r;
|
||||||
|
int round;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Encrypting
|
||||||
|
*/
|
||||||
|
kl1 = en_keysl;
|
||||||
|
kr1 = en_keysr;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Do initial permutation (IP).
|
||||||
|
*/
|
||||||
|
l = ip_maskl[0][l_in >> 24]
|
||||||
|
| ip_maskl[1][(l_in >> 16) & 0xff]
|
||||||
|
| ip_maskl[2][(l_in >> 8) & 0xff]
|
||||||
|
| ip_maskl[3][l_in & 0xff]
|
||||||
|
| ip_maskl[4][r_in >> 24]
|
||||||
|
| ip_maskl[5][(r_in >> 16) & 0xff]
|
||||||
|
| ip_maskl[6][(r_in >> 8) & 0xff]
|
||||||
|
| ip_maskl[7][r_in & 0xff];
|
||||||
|
r = ip_maskr[0][l_in >> 24]
|
||||||
|
| ip_maskr[1][(l_in >> 16) & 0xff]
|
||||||
|
| ip_maskr[2][(l_in >> 8) & 0xff]
|
||||||
|
| ip_maskr[3][l_in & 0xff]
|
||||||
|
| ip_maskr[4][r_in >> 24]
|
||||||
|
| ip_maskr[5][(r_in >> 16) & 0xff]
|
||||||
|
| ip_maskr[6][(r_in >> 8) & 0xff]
|
||||||
|
| ip_maskr[7][r_in & 0xff];
|
||||||
|
|
||||||
|
while (count--) {
|
||||||
|
/*
|
||||||
|
* Do each round.
|
||||||
|
*/
|
||||||
|
kl = kl1;
|
||||||
|
kr = kr1;
|
||||||
|
round = 16;
|
||||||
|
while (round--) {
|
||||||
|
/*
|
||||||
|
* Expand R to 48 bits (simulate the E-box).
|
||||||
|
*/
|
||||||
|
r48l = ((r & 0x00000001) << 23)
|
||||||
|
| ((r & 0xf8000000) >> 9)
|
||||||
|
| ((r & 0x1f800000) >> 11)
|
||||||
|
| ((r & 0x01f80000) >> 13)
|
||||||
|
| ((r & 0x001f8000) >> 15);
|
||||||
|
|
||||||
|
r48r = ((r & 0x0001f800) << 7)
|
||||||
|
| ((r & 0x00001f80) << 5)
|
||||||
|
| ((r & 0x000001f8) << 3)
|
||||||
|
| ((r & 0x0000001f) << 1)
|
||||||
|
| ((r & 0x80000000) >> 31);
|
||||||
|
/*
|
||||||
|
* Do salting for crypt() and friends, and
|
||||||
|
* XOR with the permuted key.
|
||||||
|
*/
|
||||||
|
f = (r48l ^ r48r) & saltbits;
|
||||||
|
r48l ^= f ^ *kl++;
|
||||||
|
r48r ^= f ^ *kr++;
|
||||||
|
/*
|
||||||
|
* Do sbox lookups (which shrink it back to 32 bits)
|
||||||
|
* and do the pbox permutation at the same time.
|
||||||
|
*/
|
||||||
|
f = psbox[0][m_sbox[0][r48l >> 12]]
|
||||||
|
| psbox[1][m_sbox[1][r48l & 0xfff]]
|
||||||
|
| psbox[2][m_sbox[2][r48r >> 12]]
|
||||||
|
| psbox[3][m_sbox[3][r48r & 0xfff]];
|
||||||
|
/*
|
||||||
|
* Now that we've permuted things, complete f().
|
||||||
|
*/
|
||||||
|
f ^= l;
|
||||||
|
l = r;
|
||||||
|
r = f;
|
||||||
|
}
|
||||||
|
r = l;
|
||||||
|
l = f;
|
||||||
|
}
|
||||||
|
/*
|
||||||
|
* Do final permutation (inverse of IP).
|
||||||
|
*/
|
||||||
|
*l_out = fp_maskl[0][l >> 24]
|
||||||
|
| fp_maskl[1][(l >> 16) & 0xff]
|
||||||
|
| fp_maskl[2][(l >> 8) & 0xff]
|
||||||
|
| fp_maskl[3][l & 0xff]
|
||||||
|
| fp_maskl[4][r >> 24]
|
||||||
|
| fp_maskl[5][(r >> 16) & 0xff]
|
||||||
|
| fp_maskl[6][(r >> 8) & 0xff]
|
||||||
|
| fp_maskl[7][r & 0xff];
|
||||||
|
*r_out = fp_maskr[0][l >> 24]
|
||||||
|
| fp_maskr[1][(l >> 16) & 0xff]
|
||||||
|
| fp_maskr[2][(l >> 8) & 0xff]
|
||||||
|
| fp_maskr[3][l & 0xff]
|
||||||
|
| fp_maskr[4][r >> 24]
|
||||||
|
| fp_maskr[5][(r >> 16) & 0xff]
|
||||||
|
| fp_maskr[6][(r >> 8) & 0xff]
|
||||||
|
| fp_maskr[7][r & 0xff];
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
#define DES_OUT_BUFSIZE 21
|
||||||
|
|
||||||
|
static char *
|
||||||
|
des_crypt(struct des_ctx *ctx, char output[21], const unsigned char *key, const unsigned char *setting)
|
||||||
|
{
|
||||||
|
uint32_t salt, l, r0, r1, keybuf[2];
|
||||||
|
uint8_t *p, *q;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Copy the key, shifting each character up by one bit
|
||||||
|
* and padding with zeros.
|
||||||
|
*/
|
||||||
|
q = (uint8_t *)keybuf;
|
||||||
|
while (q - (uint8_t *)keybuf - 8) {
|
||||||
|
*q++ = *key << 1;
|
||||||
|
if (*(q - 1))
|
||||||
|
key++;
|
||||||
|
}
|
||||||
|
des_setkey(ctx, (char *)keybuf);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* setting - 2 bytes of salt
|
||||||
|
* key - up to 8 characters
|
||||||
|
*/
|
||||||
|
salt = (ascii_to_bin(setting[1]) << 6)
|
||||||
|
| ascii_to_bin(setting[0]);
|
||||||
|
|
||||||
|
output[0] = setting[0];
|
||||||
|
/*
|
||||||
|
* If the encrypted password that the salt was extracted from
|
||||||
|
* is only 1 character long, the salt will be corrupted. We
|
||||||
|
* need to ensure that the output string doesn't have an extra
|
||||||
|
* NUL in it!
|
||||||
|
*/
|
||||||
|
output[1] = setting[1] ? setting[1] : output[0];
|
||||||
|
|
||||||
|
p = (uint8_t *)output + 2;
|
||||||
|
|
||||||
|
setup_salt(ctx, salt);
|
||||||
|
/*
|
||||||
|
* Do it.
|
||||||
|
*/
|
||||||
|
do_des(ctx, 0L, 0L, &r0, &r1, 25 /* count */);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Now encode the result...
|
||||||
|
*/
|
||||||
|
l = (r0 >> 8);
|
||||||
|
*p++ = ascii64[(l >> 18) & 0x3f];
|
||||||
|
*p++ = ascii64[(l >> 12) & 0x3f];
|
||||||
|
*p++ = ascii64[(l >> 6) & 0x3f];
|
||||||
|
*p++ = ascii64[l & 0x3f];
|
||||||
|
|
||||||
|
l = (r0 << 16) | ((r1 >> 16) & 0xffff);
|
||||||
|
*p++ = ascii64[(l >> 18) & 0x3f];
|
||||||
|
*p++ = ascii64[(l >> 12) & 0x3f];
|
||||||
|
*p++ = ascii64[(l >> 6) & 0x3f];
|
||||||
|
*p++ = ascii64[l & 0x3f];
|
||||||
|
|
||||||
|
l = r1 << 2;
|
||||||
|
*p++ = ascii64[(l >> 12) & 0x3f];
|
||||||
|
*p++ = ascii64[(l >> 6) & 0x3f];
|
||||||
|
*p++ = ascii64[l & 0x3f];
|
||||||
|
*p = 0;
|
||||||
|
|
||||||
|
return output;
|
||||||
|
}
|
||||||
|
|
||||||
|
// des_setkey never fails
|
||||||
|
|
||||||
|
#undef C
|
||||||
|
#undef init_perm
|
||||||
|
#undef final_perm
|
||||||
|
#undef m_sbox
|
||||||
|
#undef D
|
||||||
|
#undef const_ctx
|
||||||
|
#undef saltbits
|
||||||
|
#undef old_salt
|
||||||
|
#undef old_rawkey0
|
||||||
|
#undef old_rawkey1
|
||||||
|
#undef un_pbox
|
||||||
|
#undef inv_comp_perm
|
||||||
|
#undef inv_key_perm
|
||||||
|
#undef en_keysl
|
||||||
|
#undef en_keysr
|
||||||
|
#undef de_keysl
|
||||||
|
#undef de_keysr
|
||||||
|
#undef ip_maskl
|
||||||
|
#undef ip_maskr
|
||||||
|
#undef fp_maskl
|
||||||
|
#undef fp_maskr
|
||||||
|
#undef key_perm_maskl
|
||||||
|
#undef key_perm_maskr
|
||||||
|
#undef comp_maskl
|
||||||
|
#undef comp_maskr
|
||||||
|
#undef psbox
|
||||||
656
libbb/pw_encrypt_md5.c
Normal file
656
libbb/pw_encrypt_md5.c
Normal file
@ -0,0 +1,656 @@
|
|||||||
|
/*
|
||||||
|
* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
|
||||||
|
*
|
||||||
|
* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
|
||||||
|
* rights reserved.
|
||||||
|
*
|
||||||
|
* License to copy and use this software is granted provided that it
|
||||||
|
* is identified as the "RSA Data Security, Inc. MD5 Message-Digest
|
||||||
|
* Algorithm" in all material mentioning or referencing this software
|
||||||
|
* or this function.
|
||||||
|
*
|
||||||
|
* License is also granted to make and use derivative works provided
|
||||||
|
* that such works are identified as "derived from the RSA Data
|
||||||
|
* Security, Inc. MD5 Message-Digest Algorithm" in all material
|
||||||
|
* mentioning or referencing the derived work.
|
||||||
|
*
|
||||||
|
* RSA Data Security, Inc. makes no representations concerning either
|
||||||
|
* the merchantability of this software or the suitability of this
|
||||||
|
* software for any particular purpose. It is provided "as is"
|
||||||
|
* without express or implied warranty of any kind.
|
||||||
|
*
|
||||||
|
* These notices must be retained in any copies of any part of this
|
||||||
|
* documentation and/or software.
|
||||||
|
*
|
||||||
|
* $FreeBSD: src/lib/libmd/md5c.c,v 1.9.2.1 1999/08/29 14:57:12 peter Exp $
|
||||||
|
*
|
||||||
|
* This code is the same as the code published by RSA Inc. It has been
|
||||||
|
* edited for clarity and style only.
|
||||||
|
*
|
||||||
|
* ----------------------------------------------------------------------------
|
||||||
|
* The md5_crypt() function was taken from freeBSD's libcrypt and contains
|
||||||
|
* this license:
|
||||||
|
* "THE BEER-WARE LICENSE" (Revision 42):
|
||||||
|
* <phk@login.dknet.dk> wrote this file. As long as you retain this notice you
|
||||||
|
* can do whatever you want with this stuff. If we meet some day, and you think
|
||||||
|
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
|
||||||
|
*
|
||||||
|
* $FreeBSD: src/lib/libcrypt/crypt.c,v 1.7.2.1 1999/08/29 14:56:33 peter Exp $
|
||||||
|
*
|
||||||
|
* ----------------------------------------------------------------------------
|
||||||
|
* On April 19th, 2001 md5_crypt() was modified to make it reentrant
|
||||||
|
* by Erik Andersen <andersen@uclibc.org>
|
||||||
|
*
|
||||||
|
*
|
||||||
|
* June 28, 2001 Manuel Novoa III
|
||||||
|
*
|
||||||
|
* "Un-inlined" code using loops and static const tables in order to
|
||||||
|
* reduce generated code size (on i386 from approx 4k to approx 2.5k).
|
||||||
|
*
|
||||||
|
* June 29, 2001 Manuel Novoa III
|
||||||
|
*
|
||||||
|
* Completely removed static PADDING array.
|
||||||
|
*
|
||||||
|
* Reintroduced the loop unrolling in MD5_Transform and added the
|
||||||
|
* MD5_SIZE_OVER_SPEED option for configurability. Define below as:
|
||||||
|
* 0 fully unrolled loops
|
||||||
|
* 1 partially unrolled (4 ops per loop)
|
||||||
|
* 2 no unrolling -- introduces the need to swap 4 variables (slow)
|
||||||
|
* 3 no unrolling and all 4 loops merged into one with switch
|
||||||
|
* in each loop (glacial)
|
||||||
|
* On i386, sizes are roughly (-Os -fno-builtin):
|
||||||
|
* 0: 3k 1: 2.5k 2: 2.2k 3: 2k
|
||||||
|
*
|
||||||
|
*
|
||||||
|
* Since SuSv3 does not require crypt_r, modified again August 7, 2002
|
||||||
|
* by Erik Andersen to remove reentrance stuff...
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Valid values are 1 (fastest/largest) to 3 (smallest/slowest).
|
||||||
|
*/
|
||||||
|
#define MD5_SIZE_OVER_SPEED 3
|
||||||
|
|
||||||
|
/**********************************************************************/
|
||||||
|
|
||||||
|
/* MD5 context. */
|
||||||
|
struct MD5Context {
|
||||||
|
uint32_t state[4]; /* state (ABCD) */
|
||||||
|
uint32_t count[2]; /* number of bits, modulo 2^64 (lsb first) */
|
||||||
|
unsigned char buffer[64]; /* input buffer */
|
||||||
|
};
|
||||||
|
|
||||||
|
static void __md5_Init(struct MD5Context *);
|
||||||
|
static void __md5_Update(struct MD5Context *, const unsigned char *, unsigned int);
|
||||||
|
static void __md5_Pad(struct MD5Context *);
|
||||||
|
static void __md5_Final(unsigned char [16], struct MD5Context *);
|
||||||
|
static void __md5_Transform(uint32_t [4], const unsigned char [64]);
|
||||||
|
|
||||||
|
|
||||||
|
#define MD5_MAGIC_STR "$1$"
|
||||||
|
#define MD5_MAGIC_LEN (sizeof(MD5_MAGIC_STR) - 1)
|
||||||
|
static const unsigned char __md5__magic[] = MD5_MAGIC_STR;
|
||||||
|
|
||||||
|
|
||||||
|
#ifdef i386
|
||||||
|
#define __md5_Encode memcpy
|
||||||
|
#define __md5_Decode memcpy
|
||||||
|
#else /* i386 */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* __md5_Encodes input (uint32_t) into output (unsigned char). Assumes len is
|
||||||
|
* a multiple of 4.
|
||||||
|
*/
|
||||||
|
|
||||||
|
static void
|
||||||
|
__md5_Encode(unsigned char *output, uint32_t *input, unsigned int len)
|
||||||
|
{
|
||||||
|
unsigned int i, j;
|
||||||
|
|
||||||
|
for (i = 0, j = 0; j < len; i++, j += 4) {
|
||||||
|
output[j] = input[i];
|
||||||
|
output[j+1] = (input[i] >> 8);
|
||||||
|
output[j+2] = (input[i] >> 16);
|
||||||
|
output[j+3] = (input[i] >> 24);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* __md5_Decodes input (unsigned char) into output (uint32_t). Assumes len is
|
||||||
|
* a multiple of 4.
|
||||||
|
*/
|
||||||
|
|
||||||
|
static void
|
||||||
|
__md5_Decode(uint32_t *output, const unsigned char *input, unsigned int len)
|
||||||
|
{
|
||||||
|
unsigned int i, j;
|
||||||
|
|
||||||
|
for (i = 0, j = 0; j < len; i++, j += 4)
|
||||||
|
output[i] = ((uint32_t)input[j]) | (((uint32_t)input[j+1]) << 8) |
|
||||||
|
(((uint32_t)input[j+2]) << 16) | (((uint32_t)input[j+3]) << 24);
|
||||||
|
}
|
||||||
|
#endif /* i386 */
|
||||||
|
|
||||||
|
/* F, G, H and I are basic MD5 functions. */
|
||||||
|
#define F(x, y, z) (((x) & (y)) | (~(x) & (z)))
|
||||||
|
#define G(x, y, z) (((x) & (z)) | ((y) & ~(z)))
|
||||||
|
#define H(x, y, z) ((x) ^ (y) ^ (z))
|
||||||
|
#define I(x, y, z) ((y) ^ ((x) | ~(z)))
|
||||||
|
|
||||||
|
/* ROTATE_LEFT rotates x left n bits. */
|
||||||
|
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
|
||||||
|
|
||||||
|
/*
|
||||||
|
* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
|
||||||
|
* Rotation is separate from addition to prevent recomputation.
|
||||||
|
*/
|
||||||
|
#define FF(a, b, c, d, x, s, ac) { \
|
||||||
|
(a) += F ((b), (c), (d)) + (x) + (uint32_t)(ac); \
|
||||||
|
(a) = ROTATE_LEFT((a), (s)); \
|
||||||
|
(a) += (b); \
|
||||||
|
}
|
||||||
|
#define GG(a, b, c, d, x, s, ac) { \
|
||||||
|
(a) += G ((b), (c), (d)) + (x) + (uint32_t)(ac); \
|
||||||
|
(a) = ROTATE_LEFT((a), (s)); \
|
||||||
|
(a) += (b); \
|
||||||
|
}
|
||||||
|
#define HH(a, b, c, d, x, s, ac) { \
|
||||||
|
(a) += H ((b), (c), (d)) + (x) + (uint32_t)(ac); \
|
||||||
|
(a) = ROTATE_LEFT((a), (s)); \
|
||||||
|
(a) += (b); \
|
||||||
|
}
|
||||||
|
#define II(a, b, c, d, x, s, ac) { \
|
||||||
|
(a) += I ((b), (c), (d)) + (x) + (uint32_t)(ac); \
|
||||||
|
(a) = ROTATE_LEFT((a), (s)); \
|
||||||
|
(a) += (b); \
|
||||||
|
}
|
||||||
|
|
||||||
|
/* MD5 initialization. Begins an MD5 operation, writing a new context. */
|
||||||
|
|
||||||
|
static void __md5_Init(struct MD5Context *context)
|
||||||
|
{
|
||||||
|
context->count[0] = context->count[1] = 0;
|
||||||
|
|
||||||
|
/* Load magic initialization constants. */
|
||||||
|
context->state[0] = 0x67452301;
|
||||||
|
context->state[1] = 0xefcdab89;
|
||||||
|
context->state[2] = 0x98badcfe;
|
||||||
|
context->state[3] = 0x10325476;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* MD5 block update operation. Continues an MD5 message-digest
|
||||||
|
* operation, processing another message block, and updating the
|
||||||
|
* context.
|
||||||
|
*/
|
||||||
|
|
||||||
|
static void __md5_Update(struct MD5Context *context, const unsigned char *input, unsigned int inputLen)
|
||||||
|
{
|
||||||
|
unsigned int i, idx, partLen;
|
||||||
|
|
||||||
|
/* Compute number of bytes mod 64 */
|
||||||
|
idx = (context->count[0] >> 3) & 0x3F;
|
||||||
|
|
||||||
|
/* Update number of bits */
|
||||||
|
context->count[0] += (inputLen << 3);
|
||||||
|
if (context->count[0] < (inputLen << 3))
|
||||||
|
context->count[1]++;
|
||||||
|
context->count[1] += (inputLen >> 29);
|
||||||
|
|
||||||
|
partLen = 64 - idx;
|
||||||
|
|
||||||
|
/* Transform as many times as possible. */
|
||||||
|
if (inputLen >= partLen) {
|
||||||
|
memcpy(&context->buffer[idx], input, partLen);
|
||||||
|
__md5_Transform(context->state, context->buffer);
|
||||||
|
|
||||||
|
for (i = partLen; i + 63 < inputLen; i += 64)
|
||||||
|
__md5_Transform(context->state, &input[i]);
|
||||||
|
|
||||||
|
idx = 0;
|
||||||
|
} else
|
||||||
|
i = 0;
|
||||||
|
|
||||||
|
/* Buffer remaining input */
|
||||||
|
memcpy(&context->buffer[idx], &input[i], inputLen - i);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* MD5 padding. Adds padding followed by original length.
|
||||||
|
*/
|
||||||
|
|
||||||
|
static void __md5_Pad(struct MD5Context *context)
|
||||||
|
{
|
||||||
|
unsigned char bits[8];
|
||||||
|
unsigned int idx, padLen;
|
||||||
|
unsigned char PADDING[64];
|
||||||
|
|
||||||
|
memset(PADDING, 0, sizeof(PADDING));
|
||||||
|
PADDING[0] = 0x80;
|
||||||
|
|
||||||
|
/* Save number of bits */
|
||||||
|
__md5_Encode(bits, context->count, 8);
|
||||||
|
|
||||||
|
/* Pad out to 56 mod 64. */
|
||||||
|
idx = (context->count[0] >> 3) & 0x3f;
|
||||||
|
padLen = (idx < 56) ? (56 - idx) : (120 - idx);
|
||||||
|
__md5_Update(context, PADDING, padLen);
|
||||||
|
|
||||||
|
/* Append length (before padding) */
|
||||||
|
__md5_Update(context, bits, 8);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* MD5 finalization. Ends an MD5 message-digest operation, writing the
|
||||||
|
* the message digest and zeroizing the context.
|
||||||
|
*/
|
||||||
|
|
||||||
|
static void __md5_Final(unsigned char digest[16], struct MD5Context *context)
|
||||||
|
{
|
||||||
|
/* Do padding. */
|
||||||
|
__md5_Pad(context);
|
||||||
|
|
||||||
|
/* Store state in digest */
|
||||||
|
__md5_Encode(digest, context->state, 16);
|
||||||
|
|
||||||
|
/* Zeroize sensitive information. */
|
||||||
|
memset(context, 0, sizeof(*context));
|
||||||
|
}
|
||||||
|
|
||||||
|
/* MD5 basic transformation. Transforms state based on block. */
|
||||||
|
|
||||||
|
static void __md5_Transform(uint32_t state[4], const unsigned char block[64])
|
||||||
|
{
|
||||||
|
uint32_t a, b, c, d, x[16];
|
||||||
|
#if MD5_SIZE_OVER_SPEED > 1
|
||||||
|
uint32_t temp;
|
||||||
|
const unsigned char *ps;
|
||||||
|
|
||||||
|
static const unsigned char S[] = {
|
||||||
|
7, 12, 17, 22,
|
||||||
|
5, 9, 14, 20,
|
||||||
|
4, 11, 16, 23,
|
||||||
|
6, 10, 15, 21
|
||||||
|
};
|
||||||
|
#endif /* MD5_SIZE_OVER_SPEED > 1 */
|
||||||
|
|
||||||
|
#if MD5_SIZE_OVER_SPEED > 0
|
||||||
|
const uint32_t *pc;
|
||||||
|
const unsigned char *pp;
|
||||||
|
int i;
|
||||||
|
|
||||||
|
static const uint32_t C[] = {
|
||||||
|
/* round 1 */
|
||||||
|
0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
|
||||||
|
0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
|
||||||
|
0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
|
||||||
|
0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
|
||||||
|
/* round 2 */
|
||||||
|
0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
|
||||||
|
0xd62f105d, 0x2441453, 0xd8a1e681, 0xe7d3fbc8,
|
||||||
|
0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
|
||||||
|
0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
|
||||||
|
/* round 3 */
|
||||||
|
0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
|
||||||
|
0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
|
||||||
|
0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05,
|
||||||
|
0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
|
||||||
|
/* round 4 */
|
||||||
|
0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
|
||||||
|
0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
|
||||||
|
0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
|
||||||
|
0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
|
||||||
|
};
|
||||||
|
|
||||||
|
static const unsigned char P[] = {
|
||||||
|
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 1 */
|
||||||
|
1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, /* 2 */
|
||||||
|
5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, /* 3 */
|
||||||
|
0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9 /* 4 */
|
||||||
|
};
|
||||||
|
|
||||||
|
#endif /* MD5_SIZE_OVER_SPEED > 0 */
|
||||||
|
|
||||||
|
__md5_Decode(x, block, 64);
|
||||||
|
|
||||||
|
a = state[0]; b = state[1]; c = state[2]; d = state[3];
|
||||||
|
|
||||||
|
#if MD5_SIZE_OVER_SPEED > 2
|
||||||
|
pc = C; pp = P; ps = S - 4;
|
||||||
|
|
||||||
|
for (i = 0; i < 64; i++) {
|
||||||
|
if ((i & 0x0f) == 0) ps += 4;
|
||||||
|
temp = a;
|
||||||
|
switch (i>>4) {
|
||||||
|
case 0:
|
||||||
|
temp += F(b, c, d);
|
||||||
|
break;
|
||||||
|
case 1:
|
||||||
|
temp += G(b, c, d);
|
||||||
|
break;
|
||||||
|
case 2:
|
||||||
|
temp += H(b, c, d);
|
||||||
|
break;
|
||||||
|
case 3:
|
||||||
|
temp += I(b, c, d);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
temp += x[*pp++] + *pc++;
|
||||||
|
temp = ROTATE_LEFT(temp, ps[i & 3]);
|
||||||
|
temp += b;
|
||||||
|
a = d; d = c; c = b; b = temp;
|
||||||
|
}
|
||||||
|
#elif MD5_SIZE_OVER_SPEED > 1
|
||||||
|
pc = C; pp = P; ps = S;
|
||||||
|
|
||||||
|
/* Round 1 */
|
||||||
|
for (i = 0; i < 16; i++) {
|
||||||
|
FF(a, b, c, d, x[*pp], ps[i & 0x3], *pc); pp++; pc++;
|
||||||
|
temp = d; d = c; c = b; b = a; a = temp;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Round 2 */
|
||||||
|
ps += 4;
|
||||||
|
for (; i < 32; i++) {
|
||||||
|
GG(a, b, c, d, x[*pp], ps[i & 0x3], *pc); pp++; pc++;
|
||||||
|
temp = d; d = c; c = b; b = a; a = temp;
|
||||||
|
}
|
||||||
|
/* Round 3 */
|
||||||
|
ps += 4;
|
||||||
|
for (; i < 48; i++) {
|
||||||
|
HH(a, b, c, d, x[*pp], ps[i & 0x3], *pc); pp++; pc++;
|
||||||
|
temp = d; d = c; c = b; b = a; a = temp;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Round 4 */
|
||||||
|
ps += 4;
|
||||||
|
for (; i < 64; i++) {
|
||||||
|
II(a, b, c, d, x[*pp], ps[i & 0x3], *pc); pp++; pc++;
|
||||||
|
temp = d; d = c; c = b; b = a; a = temp;
|
||||||
|
}
|
||||||
|
#elif MD5_SIZE_OVER_SPEED > 0
|
||||||
|
pc = C; pp = P;
|
||||||
|
|
||||||
|
/* Round 1 */
|
||||||
|
for (i = 0; i < 4; i++) {
|
||||||
|
FF(a, b, c, d, x[*pp], 7, *pc); pp++; pc++;
|
||||||
|
FF(d, a, b, c, x[*pp], 12, *pc); pp++; pc++;
|
||||||
|
FF(c, d, a, b, x[*pp], 17, *pc); pp++; pc++;
|
||||||
|
FF(b, c, d, a, x[*pp], 22, *pc); pp++; pc++;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Round 2 */
|
||||||
|
for (i = 0; i < 4; i++) {
|
||||||
|
GG(a, b, c, d, x[*pp], 5, *pc); pp++; pc++;
|
||||||
|
GG(d, a, b, c, x[*pp], 9, *pc); pp++; pc++;
|
||||||
|
GG(c, d, a, b, x[*pp], 14, *pc); pp++; pc++;
|
||||||
|
GG(b, c, d, a, x[*pp], 20, *pc); pp++; pc++;
|
||||||
|
}
|
||||||
|
/* Round 3 */
|
||||||
|
for (i = 0; i < 4; i++) {
|
||||||
|
HH(a, b, c, d, x[*pp], 4, *pc); pp++; pc++;
|
||||||
|
HH(d, a, b, c, x[*pp], 11, *pc); pp++; pc++;
|
||||||
|
HH(c, d, a, b, x[*pp], 16, *pc); pp++; pc++;
|
||||||
|
HH(b, c, d, a, x[*pp], 23, *pc); pp++; pc++;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Round 4 */
|
||||||
|
for (i = 0; i < 4; i++) {
|
||||||
|
II(a, b, c, d, x[*pp], 6, *pc); pp++; pc++;
|
||||||
|
II(d, a, b, c, x[*pp], 10, *pc); pp++; pc++;
|
||||||
|
II(c, d, a, b, x[*pp], 15, *pc); pp++; pc++;
|
||||||
|
II(b, c, d, a, x[*pp], 21, *pc); pp++; pc++;
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
/* Round 1 */
|
||||||
|
#define S11 7
|
||||||
|
#define S12 12
|
||||||
|
#define S13 17
|
||||||
|
#define S14 22
|
||||||
|
FF(a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
|
||||||
|
FF(d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
|
||||||
|
FF(c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
|
||||||
|
FF(b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
|
||||||
|
FF(a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
|
||||||
|
FF(d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
|
||||||
|
FF(c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
|
||||||
|
FF(b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
|
||||||
|
FF(a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
|
||||||
|
FF(d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
|
||||||
|
FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
|
||||||
|
FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
|
||||||
|
FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
|
||||||
|
FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
|
||||||
|
FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
|
||||||
|
FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
|
||||||
|
|
||||||
|
/* Round 2 */
|
||||||
|
#define S21 5
|
||||||
|
#define S22 9
|
||||||
|
#define S23 14
|
||||||
|
#define S24 20
|
||||||
|
GG(a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
|
||||||
|
GG(d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
|
||||||
|
GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
|
||||||
|
GG(b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
|
||||||
|
GG(a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
|
||||||
|
GG(d, a, b, c, x[10], S22, 0x2441453); /* 22 */
|
||||||
|
GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
|
||||||
|
GG(b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
|
||||||
|
GG(a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
|
||||||
|
GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
|
||||||
|
GG(c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
|
||||||
|
GG(b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
|
||||||
|
GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
|
||||||
|
GG(d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
|
||||||
|
GG(c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
|
||||||
|
GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
|
||||||
|
|
||||||
|
/* Round 3 */
|
||||||
|
#define S31 4
|
||||||
|
#define S32 11
|
||||||
|
#define S33 16
|
||||||
|
#define S34 23
|
||||||
|
HH(a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
|
||||||
|
HH(d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
|
||||||
|
HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
|
||||||
|
HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
|
||||||
|
HH(a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
|
||||||
|
HH(d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
|
||||||
|
HH(c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
|
||||||
|
HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
|
||||||
|
HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
|
||||||
|
HH(d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
|
||||||
|
HH(c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
|
||||||
|
HH(b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */
|
||||||
|
HH(a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
|
||||||
|
HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
|
||||||
|
HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
|
||||||
|
HH(b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
|
||||||
|
|
||||||
|
/* Round 4 */
|
||||||
|
#define S41 6
|
||||||
|
#define S42 10
|
||||||
|
#define S43 15
|
||||||
|
#define S44 21
|
||||||
|
II(a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
|
||||||
|
II(d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
|
||||||
|
II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
|
||||||
|
II(b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
|
||||||
|
II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
|
||||||
|
II(d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
|
||||||
|
II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
|
||||||
|
II(b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
|
||||||
|
II(a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
|
||||||
|
II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
|
||||||
|
II(c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
|
||||||
|
II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
|
||||||
|
II(a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
|
||||||
|
II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
|
||||||
|
II(c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
|
||||||
|
II(b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
|
||||||
|
#endif
|
||||||
|
|
||||||
|
state[0] += a;
|
||||||
|
state[1] += b;
|
||||||
|
state[2] += c;
|
||||||
|
state[3] += d;
|
||||||
|
|
||||||
|
/* Zeroize sensitive information. */
|
||||||
|
memset(x, 0, sizeof(x));
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static void
|
||||||
|
__md5_to64(char *s, unsigned long v, int n)
|
||||||
|
{
|
||||||
|
while (--n >= 0) {
|
||||||
|
*s++ = ascii64[v & 0x3f];
|
||||||
|
v >>= 6;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* UNIX password
|
||||||
|
*
|
||||||
|
* Use MD5 for what it is best at...
|
||||||
|
*/
|
||||||
|
#define MD5_OUT_BUFSIZE 120
|
||||||
|
|
||||||
|
static char *
|
||||||
|
md5_crypt(char passwd[120], const unsigned char *pw, const unsigned char *salt)
|
||||||
|
{
|
||||||
|
const unsigned char *sp, *ep;
|
||||||
|
char *p;
|
||||||
|
unsigned char final[17]; /* final[16] exists only to aid in looping */
|
||||||
|
int sl, pl, i, pw_len;
|
||||||
|
struct MD5Context ctx, ctx1;
|
||||||
|
unsigned long l;
|
||||||
|
|
||||||
|
/* Refine the Salt first */
|
||||||
|
sp = salt;
|
||||||
|
|
||||||
|
// always true for bbox
|
||||||
|
// /* If it starts with the magic string, then skip that */
|
||||||
|
// if (!strncmp(sp, __md5__magic, MD5_MAGIC_LEN))
|
||||||
|
sp += MD5_MAGIC_LEN;
|
||||||
|
|
||||||
|
/* It stops at the first '$', max 8 chars */
|
||||||
|
for (ep = sp; *ep && *ep != '$' && ep < (sp+8); ep++)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
/* get the length of the true salt */
|
||||||
|
sl = ep - sp;
|
||||||
|
|
||||||
|
__md5_Init(&ctx);
|
||||||
|
|
||||||
|
/* The password first, since that is what is most unknown */
|
||||||
|
pw_len = strlen((char*)pw);
|
||||||
|
__md5_Update(&ctx, pw, pw_len);
|
||||||
|
|
||||||
|
/* Then our magic string */
|
||||||
|
__md5_Update(&ctx, __md5__magic, MD5_MAGIC_LEN);
|
||||||
|
|
||||||
|
/* Then the raw salt */
|
||||||
|
__md5_Update(&ctx, sp, sl);
|
||||||
|
|
||||||
|
/* Then just as many characters of the MD5(pw, salt, pw) */
|
||||||
|
__md5_Init(&ctx1);
|
||||||
|
__md5_Update(&ctx1, pw, pw_len);
|
||||||
|
__md5_Update(&ctx1, sp, sl);
|
||||||
|
__md5_Update(&ctx1, pw, pw_len);
|
||||||
|
__md5_Final(final, &ctx1);
|
||||||
|
for (pl = pw_len; pl > 0; pl -= 16)
|
||||||
|
__md5_Update(&ctx, final, pl > 16 ? 16 : pl);
|
||||||
|
|
||||||
|
/* Don't leave anything around in vm they could use. */
|
||||||
|
//TODO: the above comment seems to be wrong. final is used later.
|
||||||
|
memset(final, 0, sizeof(final));
|
||||||
|
|
||||||
|
/* Then something really weird... */
|
||||||
|
for (i = pw_len; i; i >>= 1) {
|
||||||
|
__md5_Update(&ctx, ((i & 1) ? final : (const unsigned char *) pw), 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Now make the output string */
|
||||||
|
passwd[0] = '$';
|
||||||
|
passwd[1] = '1';
|
||||||
|
passwd[2] = '$';
|
||||||
|
strncpy(passwd + 3, (char*)sp, sl);
|
||||||
|
passwd[sl + 3] = '$';
|
||||||
|
passwd[sl + 4] = '\0';
|
||||||
|
|
||||||
|
__md5_Final(final, &ctx);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* and now, just to make sure things don't run too fast
|
||||||
|
* On a 60 Mhz Pentium this takes 34 msec, so you would
|
||||||
|
* need 30 seconds to build a 1000 entry dictionary...
|
||||||
|
*/
|
||||||
|
for (i = 0; i < 1000; i++) {
|
||||||
|
__md5_Init(&ctx1);
|
||||||
|
if (i & 1)
|
||||||
|
__md5_Update(&ctx1, pw, pw_len);
|
||||||
|
else
|
||||||
|
__md5_Update(&ctx1, final, 16);
|
||||||
|
|
||||||
|
if (i % 3)
|
||||||
|
__md5_Update(&ctx1, sp, sl);
|
||||||
|
|
||||||
|
if (i % 7)
|
||||||
|
__md5_Update(&ctx1, pw, pw_len);
|
||||||
|
|
||||||
|
if (i & 1)
|
||||||
|
__md5_Update(&ctx1, final, 16);
|
||||||
|
else
|
||||||
|
__md5_Update(&ctx1, pw, pw_len);
|
||||||
|
__md5_Final(final, &ctx1);
|
||||||
|
}
|
||||||
|
|
||||||
|
p = passwd + sl + 4; /*strlen(passwd);*/
|
||||||
|
|
||||||
|
final[16] = final[5];
|
||||||
|
for (i = 0; i < 5; i++) {
|
||||||
|
l = (final[i] << 16) | (final[i+6] << 8) | final[i+12];
|
||||||
|
__md5_to64(p, l, 4); p += 4;
|
||||||
|
}
|
||||||
|
l = final[11];
|
||||||
|
__md5_to64(p, l, 2); p += 2;
|
||||||
|
*p = '\0';
|
||||||
|
|
||||||
|
/* Don't leave anything around in vm they could use. */
|
||||||
|
memset(final, 0, sizeof(final));
|
||||||
|
|
||||||
|
return passwd;
|
||||||
|
}
|
||||||
|
|
||||||
|
#undef MD5_SIZE_OVER_SPEED
|
||||||
|
#undef MD5_MAGIC_STR
|
||||||
|
#undef MD5_MAGIC_LEN
|
||||||
|
#undef __md5_Encode
|
||||||
|
#undef __md5_Decode
|
||||||
|
#undef F
|
||||||
|
#undef G
|
||||||
|
#undef H
|
||||||
|
#undef I
|
||||||
|
#undef ROTATE_LEFT
|
||||||
|
#undef FF
|
||||||
|
#undef GG
|
||||||
|
#undef HH
|
||||||
|
#undef II
|
||||||
|
#undef S11
|
||||||
|
#undef S12
|
||||||
|
#undef S13
|
||||||
|
#undef S14
|
||||||
|
#undef S21
|
||||||
|
#undef S22
|
||||||
|
#undef S23
|
||||||
|
#undef S24
|
||||||
|
#undef S31
|
||||||
|
#undef S32
|
||||||
|
#undef S33
|
||||||
|
#undef S34
|
||||||
|
#undef S41
|
||||||
|
#undef S42
|
||||||
|
#undef S43
|
||||||
|
#undef S44
|
||||||
@ -47,7 +47,7 @@ int chpasswd_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
|||||||
strcpy(salt, "$1$");
|
strcpy(salt, "$1$");
|
||||||
rnd = crypt_make_salt(salt + 3, 4, rnd);
|
rnd = crypt_make_salt(salt + 3, 4, rnd);
|
||||||
}
|
}
|
||||||
pass = pw_encrypt(pass, salt);
|
pass = pw_encrypt(pass, salt, 0);
|
||||||
}
|
}
|
||||||
|
|
||||||
/* This is rather complex: if user is not found in /etc/shadow,
|
/* This is rather complex: if user is not found in /etc/shadow,
|
||||||
|
|||||||
@ -7,6 +7,30 @@
|
|||||||
|
|
||||||
#include "libbb.h"
|
#include "libbb.h"
|
||||||
|
|
||||||
|
#define TESTING 0
|
||||||
|
|
||||||
|
/*
|
||||||
|
set TESTING to 1 and pipe some file through this script
|
||||||
|
if you played with bbox's crypt implementation.
|
||||||
|
|
||||||
|
while read line; do
|
||||||
|
n=`./busybox cryptpw -a des -- "$line"`
|
||||||
|
o=`./busybox_old cryptpw -a des -- "$line"`
|
||||||
|
test "$n" != "$o" && {
|
||||||
|
echo n="$n"
|
||||||
|
echo o="$o"
|
||||||
|
exit
|
||||||
|
}
|
||||||
|
n=`./busybox cryptpw -- "$line"`
|
||||||
|
o=`./busybox_old cryptpw -- "$line"`
|
||||||
|
test "$n" != "$o" && {
|
||||||
|
echo n="$n"
|
||||||
|
echo o="$o"
|
||||||
|
exit
|
||||||
|
}
|
||||||
|
done
|
||||||
|
*/
|
||||||
|
|
||||||
int cryptpw_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
int cryptpw_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
||||||
int cryptpw_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
int cryptpw_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
||||||
{
|
{
|
||||||
@ -18,11 +42,17 @@ int cryptpw_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
|||||||
//((uint32_t*)&salt)[0] = '$' + '1'*0x100 + '$'*0x10000;
|
//((uint32_t*)&salt)[0] = '$' + '1'*0x100 + '$'*0x10000;
|
||||||
/* Hope one day gcc will do it itself (inlining strcpy) */
|
/* Hope one day gcc will do it itself (inlining strcpy) */
|
||||||
crypt_make_salt(salt + 3, 4, 0); /* md5 */
|
crypt_make_salt(salt + 3, 4, 0); /* md5 */
|
||||||
|
#if TESTING
|
||||||
|
strcpy(salt + 3, "ajg./bcf");
|
||||||
|
#endif
|
||||||
} else {
|
} else {
|
||||||
crypt_make_salt(salt, 1, 0); /* des */
|
crypt_make_salt(salt, 1, 0); /* des */
|
||||||
|
#if TESTING
|
||||||
|
strcpy(salt, "a.");
|
||||||
|
#endif
|
||||||
}
|
}
|
||||||
|
|
||||||
puts(pw_encrypt(argv[optind] ? argv[optind] : xmalloc_fgetline(stdin), salt));
|
puts(pw_encrypt(argv[optind] ? argv[optind] : xmalloc_fgetline(stdin), salt, 1));
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|||||||
@ -24,7 +24,7 @@ static char* new_password(const struct passwd *pw, uid_t myuid, int algo)
|
|||||||
orig = bb_askpass(0, "Old password:"); /* returns ptr to static */
|
orig = bb_askpass(0, "Old password:"); /* returns ptr to static */
|
||||||
if (!orig)
|
if (!orig)
|
||||||
goto err_ret;
|
goto err_ret;
|
||||||
cipher = pw_encrypt(orig, pw->pw_passwd); /* returns ptr to static */
|
cipher = pw_encrypt(orig, pw->pw_passwd, 1); /* returns ptr to static */
|
||||||
if (strcmp(cipher, pw->pw_passwd) != 0) {
|
if (strcmp(cipher, pw->pw_passwd) != 0) {
|
||||||
syslog(LOG_WARNING, "incorrect password for '%s'",
|
syslog(LOG_WARNING, "incorrect password for '%s'",
|
||||||
pw->pw_name);
|
pw->pw_name);
|
||||||
@ -56,7 +56,7 @@ static char* new_password(const struct passwd *pw, uid_t myuid, int algo)
|
|||||||
crypt_make_salt(salt + 3, 4, 0);
|
crypt_make_salt(salt + 3, 4, 0);
|
||||||
}
|
}
|
||||||
/* pw_encrypt returns ptr to static */
|
/* pw_encrypt returns ptr to static */
|
||||||
ret = xstrdup(pw_encrypt(newp, salt));
|
ret = xstrdup(pw_encrypt(newp, salt, 1));
|
||||||
/* whee, success! */
|
/* whee, success! */
|
||||||
|
|
||||||
err_ret:
|
err_ret:
|
||||||
|
|||||||
@ -81,7 +81,7 @@ int sulogin_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
|||||||
bb_info_msg("Normal startup");
|
bb_info_msg("Normal startup");
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
if (strcmp(pw_encrypt(cp, pwd->pw_passwd), pwd->pw_passwd) == 0) {
|
if (strcmp(pw_encrypt(cp, pwd->pw_passwd, 1), pwd->pw_passwd) == 0) {
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
bb_do_delay(FAIL_DELAY);
|
bb_do_delay(FAIL_DELAY);
|
||||||
|
|||||||
@ -1733,7 +1733,7 @@ static int checkPerm(const char *path, const char *request)
|
|||||||
&& pp[3] == '$' && pp[4]
|
&& pp[3] == '$' && pp[4]
|
||||||
) {
|
) {
|
||||||
pp++;
|
pp++;
|
||||||
cipher = pw_encrypt(u+1, pp);
|
cipher = pw_encrypt(u+1, pp, 1);
|
||||||
if (strcmp(cipher, pp) == 0)
|
if (strcmp(cipher, pp) == 0)
|
||||||
goto set_remoteuser_var; /* Ok */
|
goto set_remoteuser_var; /* Ok */
|
||||||
/* unauthorized */
|
/* unauthorized */
|
||||||
@ -2352,7 +2352,7 @@ int httpd_main(int argc ATTRIBUTE_UNUSED, char **argv)
|
|||||||
#endif
|
#endif
|
||||||
#if ENABLE_FEATURE_HTTPD_AUTH_MD5
|
#if ENABLE_FEATURE_HTTPD_AUTH_MD5
|
||||||
if (opt & OPT_MD5) {
|
if (opt & OPT_MD5) {
|
||||||
puts(pw_encrypt(pass, "$1$"));
|
puts(pw_encrypt(pass, "$1$", 1));
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
#endif
|
#endif
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user