File util-linux-2.17.1-mount_losetup_crypto.patch of Package util-linux

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File util-linux-2.17.1-mount_losetup_crypto.patch of Package util-linux (Revision 8aecc3ef7f68715290d8cdd686af427a)

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From 2d5b9e07d5b8dd698d83a6702906eefc834a9af5 Mon Sep 17 00:00:00 2001
From: Ludwig Nussel <ludwig.nussel@suse.de>
Date: Thu, 29 Nov 2007 17:46:36 +0100
Subject: [PATCH] losetup: support password hashing and specifying the key length

* add support for password hashing (sha512, sha384, sha256, rmd160).
* add support for loop-AES style strings like "twofish256" for
  specifying the encryption algorithm and key length.

Based on the SUSE patch from Ludwig Nussel <ludwig.nussel@suse.de>,
this patch adds password hashing for cryptoloop devices.  While
cryptoloop is deprecated, users may still wish to access existing
volumes.

Incompatible change:
    Default is now to hash using sha256, sha384 or sha512 depending
    on key length (16, 24, or 32 bytes).  Debian users will need to
    specify "--phash rmd160" to access existing Debian devices.
    Others will need to specify '--phash none'.

sha512.c is from loop-AES.

Signed-off-by: Ludwig Nussel <ludwig.nussel@suse.de>
---
 mount/Makefile.am |    3 +-
 mount/lomount.c   |  174 +++++++++++++++---
 mount/lomount.h   |    5 +-
 mount/losetup.8   |   11 +
 mount/mount.8     |   13 ++
 mount/mount.c     |   21 ++-
 mount/rmd160.c    |  532 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 mount/rmd160.h    |   11 +
 mount/sha512.c    |  432 +++++++++++++++++++++++++++++++++++++++++++
 mount/sha512.h    |   45 +++++
 10 files changed, 1219 insertions(+), 28 deletions(-)
 create mode 100644 mount/rmd160.c
 create mode 100644 mount/rmd160.h
 create mode 100644 mount/sha512.c
 create mode 100644 mount/sha512.h

diff --git a/mount/Makefile.am b/mount/Makefile.am
index c5f58aa..43ff01a 100644
--- a/mount/Makefile.am
+++ b/mount/Makefile.am
@@ -7,7 +7,8 @@ sbin_PROGRAMS = losetup swapon
 dist_man_MANS = fstab.5 mount.8 swapoff.8 swapon.8 umount.8 losetup.8
 
 # generic sources for all programs (mount, umount, losetup)
-srcs_common = sundries.c xmalloc.c ../lib/canonicalize.c sundries.h xmalloc.h
+srcs_common = sundries.c xmalloc.c ../lib/canonicalize.c sundries.h xmalloc.h \
+	      rmd160.c sha512.c
 
 # generic header for mount and umount
 hdrs_mount = fstab.h mount_mntent.h mount_constants.h \
diff --git a/mount/lomount.c b/mount/lomount.c
index 67712c6..a0b951c 100644
--- a/mount/lomount.c
+++ b/mount/lomount.c
@@ -23,6 +23,12 @@
 #include "sundries.h"
 #include "xmalloc.h"
 #include "pathnames.h"
+#include "rmd160.h"
+#include "sha512.h"
+
+#ifndef MIN
+#define MIN(a,b) ((a<b)?(a):(b))
+#endif
 
 #ifdef LOOP_SET_FD
 
@@ -390,12 +396,22 @@ show_loop_fd(int fd, char *device) {
 
 		if (loopinfo64.lo_encrypt_type ||
 		    loopinfo64.lo_crypt_name[0]) {
-			char *e = (char *)loopinfo64.lo_crypt_name;
+ 			const char *e = (const char*)loopinfo64.lo_crypt_name;
 
 			if (*e == 0 && loopinfo64.lo_encrypt_type == 1)
 				e = "XOR";
-			printf(_(", encryption %s (type %" PRIu32 ")"),
-			       e, loopinfo64.lo_encrypt_type);
+ 			printf(_(", encryption %s (type %" PRIu32 "), key length %u"),
+ 			       e, loopinfo64.lo_encrypt_type, loopinfo64.lo_encrypt_key_size);
+
+#if 0
+			if(loopinfo64.lo_encrypt_key_size) {
+				unsigned i;
+				printf("\nkey ");
+				for(i = 0; i < loopinfo64.lo_encrypt_key_size; ++i) {
+					printf("%hhx",loopinfo64.lo_encrypt_key[i]);
+				}
+			}
+#endif
 		}
 		printf("\n");
 		return 0;
@@ -644,7 +660,7 @@ xgetpass(int pfd, const char *prompt) {
 	}
 
 	if (pass == NULL)
-		return "";
+		return NULL;
 
 	pass[i] = 0;
 	return pass;
@@ -658,6 +674,24 @@ digits_only(const char *s) {
 	return 1;
 }
 
+static void phash_none(const unsigned char *key, size_t keylen, unsigned char* buf, size_t buflen)
+{
+	memcpy(buf, key, MIN(buflen, keylen));
+}
+
+static void phash_rmd160(const unsigned char *key, size_t keylen, unsigned char* buf, size_t buflen)
+{
+	unsigned char tmpbuf[RMD160_HASH_SIZE*2];
+	unsigned char* tmp = malloc(keylen+1);
+	tmp[0]='A';
+	memcpy(tmp+1, key, keylen);
+	rmd160_hash_buffer(tmpbuf, key, keylen);
+	rmd160_hash_buffer(tmpbuf + RMD160_HASH_SIZE, tmp, keylen+1);
+	memset(tmp, 0, keylen+1);
+	free(tmp);
+	memcpy(buf, tmpbuf, MIN(buflen, sizeof(tmpbuf)));
+}
+
 /*
  * return codes:
  *	0	- success
@@ -666,10 +700,11 @@ digits_only(const char *s) {
  */
 int
 set_loop(const char *device, const char *file, unsigned long long offset,
-	 unsigned long long sizelimit, const char *encryption, int pfd, int *options) {
+	 unsigned long long sizelimit, const char *encryption, const char *phash,
+	 int pfd, int *options, int keysz) {
 	struct loop_info64 loopinfo64;
 	int fd, ffd, mode, i;
-	char *pass;
+	char *pass = NULL;
 	char *filename;
 
 	if (verbose) {
@@ -707,13 +742,37 @@ set_loop(const char *device, const char *file, unsigned long long offset,
 		filename = (char *) file;
 	xstrncpy((char *)loopinfo64.lo_file_name, filename, LO_NAME_SIZE);
 
+	loopinfo64.lo_encrypt_key_size = 0;
+
 	if (encryption && *encryption) {
-		if (digits_only(encryption)) {
+		// a hint for suse users
+		if(!phash && (!strcmp(encryption, "twofishSL92") || (!strcmp(encryption, "twofish") && !keysz))) {
+			fprintf(stderr,"Switching to old S.u.S.E. loop_fish2 compatibility mode.\n");
+			fprintf(stderr, _("Warning: This mode is deprecated, support for it will be removed in the future.\n"));
+			loopinfo64.lo_encrypt_type = 3; // LO_CRYPT_FISH
+		} else if (digits_only(encryption)) {
 			loopinfo64.lo_encrypt_type = atoi(encryption);
 		} else {
 			loopinfo64.lo_encrypt_type = LO_CRYPT_CRYPTOAPI;
-			snprintf((char *)loopinfo64.lo_crypt_name, LO_NAME_SIZE,
+			// check for something like twofish256
+			unsigned len = strlen(encryption);
+			snprintf((char*)loopinfo64.lo_crypt_name, LO_NAME_SIZE,
 				 "%s", encryption);
+			if(len > 3) {
+				if(isdigit(loopinfo64.lo_crypt_name[len-3])
+				&& isdigit(loopinfo64.lo_crypt_name[len-2])
+				&& isdigit(loopinfo64.lo_crypt_name[len-1])) {
+					loopinfo64.lo_encrypt_key_size = atoi((char*)&loopinfo64.lo_crypt_name[len-3]) >> 3;
+					loopinfo64.lo_crypt_name[len-3] = 0;
+				}
+			}
+
+			if(keysz && loopinfo64.lo_encrypt_key_size && loopinfo64.lo_encrypt_key_size != keysz >> 3) {
+				fprintf(stderr, _("please either specify '%s%d' or -e '%s' -k '%d'\n"),
+					loopinfo64.lo_crypt_name, loopinfo64.lo_encrypt_key_size<<3,
+					loopinfo64.lo_crypt_name, keysz);
+				return 1;
+			}
 		}
 	}
 
@@ -734,20 +793,70 @@ set_loop(const char *device, const char *file, unsigned long long offset,
 	}
 #endif
 
-	switch (loopinfo64.lo_encrypt_type) {
-	case LO_CRYPT_NONE:
-		loopinfo64.lo_encrypt_key_size = 0;
-		break;
-	case LO_CRYPT_XOR:
-		pass = getpass(_("Password: "));
-		goto gotpass;
-	default:
-		pass = xgetpass(pfd, _("Password: "));
-	gotpass:
+ 	if (loopinfo64.lo_encrypt_type != LO_CRYPT_NONE) {
+ 		void (*hfunc)(const unsigned char*, size_t, unsigned char*, size_t) = NULL;
+
 		memset(loopinfo64.lo_encrypt_key, 0, LO_KEY_SIZE);
-		xstrncpy((char *)loopinfo64.lo_encrypt_key, pass, LO_KEY_SIZE);
+
+		pass = xgetpass(pfd, _("Password: "));
+		if(!pass)
+			return 1;
+
+		// set default hash functions, loop-AES compatible
+		if(loopinfo64.lo_encrypt_type == LO_CRYPT_CRYPTOAPI) {
+			hfunc = sha256_hash_buffer;
+			if(loopinfo64.lo_encrypt_key_size == 24) hfunc = sha384_hash_buffer;
+			if(loopinfo64.lo_encrypt_key_size == 32) hfunc = sha512_hash_buffer;
+		} else if(loopinfo64.lo_encrypt_type == 3 ) { // LO_CRYPT_FISH
+			if(!strcmp(encryption, "twofishSL92")) {
+				hfunc = sha512_hash_buffer;
+				loopinfo64.lo_encrypt_key_size = 32;
+			} else {
+				hfunc = phash_rmd160;
+				loopinfo64.lo_encrypt_key_size = 20;
+			}
+		} else {
+			hfunc = phash_none;
+			loopinfo64.lo_encrypt_key_size = keysz?keysz>>3:LO_KEY_SIZE;
+		}
+
+		if(!loopinfo64.lo_encrypt_key_size) {
+			if(!keysz) {
+				if(verbose)
+					fprintf(stderr, _("please specify a key length\n"));
+				return 1;
+			}
+			loopinfo64.lo_encrypt_key_size = keysz>>3;
+		}
+
+		if((unsigned)loopinfo64.lo_encrypt_key_size > sizeof(loopinfo64.lo_encrypt_key)) {
+			fprintf(stderr, _("invalid key length\n"));
+			return 1;
+		}
+
+		if (phash) {
+			if(!strcasecmp(phash, "sha512")) {
+				hfunc = sha512_hash_buffer;
+			} else if(!strcasecmp(phash, "sha384")) {
+				hfunc = sha384_hash_buffer;
+			} else if(!strcasecmp(phash, "sha256")) {
+				hfunc = sha256_hash_buffer;
+			} else if(!strcasecmp(phash, "rmd160")) {
+				hfunc = phash_rmd160;
+			} else if(!strcasecmp(phash, "none")) {
+				hfunc = phash_none;
+			} else {
+				fprintf(stderr, _("unsupported hash method '%s'\n"), phash);
+				return 1;
+			}
+		}
+
+		if(hfunc) {
+			hfunc((unsigned char*)pass, strlen(pass), loopinfo64.lo_encrypt_key, loopinfo64.lo_encrypt_key_size);
+		}
+
+		// zero buffer
 		memset(pass, 0, strlen(pass));
-		loopinfo64.lo_encrypt_key_size = LO_KEY_SIZE;
 	}
 
 	if (ioctl(fd, LOOP_SET_FD, ffd) < 0) {
@@ -895,7 +1004,13 @@ usage(void) {
 
 	fprintf(stderr, _("\nOptions:\n"
   " -e | --encryption <type> enable data encryption with specified <name/num>\n"
+  " -H | --phash <type>      hash password using specified algorithm (sha512/sha256/sha384/rmd160/none)\n"
   " -h | --help              this help\n"
+  " -k | --keybits <num>     specify number of bits in the hashed key given\n"
+  "                          to the cipher.  Some ciphers support several key\n"
+  "                          sizes and might be more efficient with a smaller\n"
+  "                          key size.  Key sizes < 128 are generally not\n"
+  "                          recommended\n"
   " -o | --offset <num>      start at offset <num> into file\n"
   "      --sizelimit <num>   loop limited to only <num> bytes of the file\n"
   " -p | --pass-fd <num>     read passphrase from file descriptor <num>\n"
@@ -908,11 +1023,14 @@ usage(void) {
 int
 main(int argc, char **argv) {
 	char *p, *offset, *sizelimit, *encryption, *passfd, *device, *file, *assoc;
+	char *keysize;
+	char *phash = NULL;
 	int delete, find, c, all, capacity;
 	int res = 0;
 	int showdev = 0;
 	int ro = 0;
 	int pfd = -1;
+	int keysz = 0;
 	unsigned long long off, slimit;
 	struct option longopts[] = {
 		{ "all", 0, 0, 'a' },
@@ -921,6 +1039,8 @@ main(int argc, char **argv) {
 		{ "encryption", 1, 0, 'e' },
 		{ "find", 0, 0, 'f' },
 		{ "help", 0, 0, 'h' },
+		{ "keybits", 1, 0, 'k' },
+		{ "phash", 1, 0, 'H' },
 		{ "associated", 1, 0, 'j' },
 		{ "offset", 1, 0, 'o' },
 		{ "sizelimit", 1, 0, 128 },
@@ -939,12 +1059,13 @@ main(int argc, char **argv) {
 	off = 0;
         slimit = 0;
 	assoc = offset = sizelimit = encryption = passfd = NULL;
+	keysize = NULL;
 
 	progname = argv[0];
 	if ((p = strrchr(progname, '/')) != NULL)
 		progname = p+1;
 
-	while ((c = getopt_long(argc, argv, "acde:E:fhj:o:p:rsv",
+	while ((c = getopt_long(argc, argv, "ade:E:fhj:k:o:p:rsvH:",
 				longopts, NULL)) != -1) {
 		switch (c) {
 		case 'a':
@@ -969,6 +1090,12 @@ main(int argc, char **argv) {
 		case 'j':
 			assoc = optarg;
 			break;
+		case 'k':
+			keysize = optarg;
+			break;
+		case 'H':
+			phash = optarg;
+			break;
 		case 'o':
 			offset = optarg;
 			break;
@@ -1054,8 +1181,11 @@ main(int argc, char **argv) {
 	else {
 		if (passfd && sscanf(passfd, "%d", &pfd) != 1)
 			usage();
+		if (keysize && sscanf(keysize,"%d",&keysz) != 1)
+			usage();
 		do {
-			res = set_loop(device, file, off, slimit, encryption, pfd, &ro);
+			res = set_loop(device, file, off, slimit, encryption, phash,
+					pfd, &ro, keysz);
 			if (res == 2 && find) {
 				if (verbose)
 					printf(_("stolen loop=%s...trying again\n"),
diff --git a/mount/lomount.h b/mount/lomount.h
index 59108d4..07ab875 100644
--- a/mount/lomount.h
+++ b/mount/lomount.h
@@ -1,5 +1,6 @@
-extern int set_loop(const char *, const char *, unsigned long long, unsigned long long,
-		    const char *, int, int *);
+extern int set_loop(const char * device, const char * file, unsigned long long offset,
+		    unsigned long long, const char *encryption, const char *phash,
+		    int pfd, int *options, int keysz);
 extern int del_loop(const char *);
 extern int is_loop_device(const char *);
 extern int is_loop_autoclear(const char *device);
diff --git a/mount/losetup.8 b/mount/losetup.8
index 8ccab6c..8566898 100644
--- a/mount/losetup.8
+++ b/mount/losetup.8
@@ -92,9 +92,18 @@ find the first unused loop device. If a
 argument is present, use this device. Otherwise, print its name
 .IP "\fB\-h, \-\-help\fP"
 print help
+.IP "\fB\-H, \-\-phash \fIhash_type\fP"
+Specify the password hash function.  Valid values are:
+.BR sha512 (default),
+.BR sha256 ,
+.BR sha384 ,
+.BR rmd160 ,
+.BR none .
 .IP "\fB\-j, \-\-associated \fIfile\fP"
 show status of all loop devices associated with given
 .I file
+.IP "\fB\-k, \-\-keybits \fInum\fP"
+set the number of bits to use in key to \fInum\fP.
 .IP "\fB\-o, \-\-offset \fIoffset\fP"
 the data start is moved \fIoffset\fP bytes into the specified file or
 device
@@ -165,6 +174,8 @@ the command
 .fi
 .SH RESTRICTION
 DES encryption is painfully slow. On the other hand, XOR is terribly weak.
+Both are insecure nowadays. Some ciphers may require a licence for you to be
+allowed to use them.
 
 Cryptoloop is deprecated in favor of dm-crypt. For more details see
 .BR cryptsetup (8).
diff --git a/mount/mount.8 b/mount/mount.8
index 2888b46..582898a 100644
--- a/mount/mount.8
+++ b/mount/mount.8
@@ -826,6 +826,15 @@ Every time the inode is modified, the i_version field will be incremented.
 .B noiversion
 Do not increment the i_version inode field.
 .TP
+.B encryption
+Specifies an encryption algorithm to use.  Used in conjunction with the
+.BR loop " option."
+.TP
+.B keybits
+Specifies the key size to use for an encryption algorithm. Used in conjunction
+with the
+.BR loop " and " encryption " options."
+.TP
 .B mand
 Allow mandatory locks on this filesystem. See
 .BR fcntl (2).
@@ -2525,6 +2534,10 @@ that are really options to
 .BR \%losetup (8).
 (These options can be used in addition to those specific
 to the filesystem type.)
+If the mount requires a passphrase, you will be prompted for one unless
+you specify a file descriptor to read from instead with the
+.BR \-\-pass-fd
+option.
 
 If no explicit loop device is mentioned
 (but just an option `\fB\-o loop\fP' is given), then
diff --git a/mount/mount.c b/mount/mount.c
index efe1165..09006f7 100644
--- a/mount/mount.c
+++ b/mount/mount.c
@@ -95,6 +95,9 @@ struct mountargs {
        void *data;
 };
 
+/* Contains the preferred keysize in bits we want to use */
+static int keysz = 0;
+
 /* Map from -o and fstab option strings to the flag argument to mount(2).  */
 struct opt_map {
   const char *opt;		/* option name */
@@ -200,6 +203,7 @@ static int opt_nofail = 0;
 
 static const char *opt_loopdev, *opt_vfstype, *opt_offset, *opt_sizelimit,
         *opt_encryption, *opt_speed, *opt_comment, *opt_uhelper;
+static const char *opt_keybits, *opt_phash;
 
 static int is_readonly(const char *node);
 static int mounted (const char *spec0, const char *node0);
@@ -216,6 +220,8 @@ static struct string_opt_map {
   { "offset=",	0, &opt_offset },
   { "sizelimit=",  0, &opt_sizelimit },
   { "encryption=", 0, &opt_encryption },
+  { "phash=", 0, &opt_phash },
+  { "keybits=", 0, &opt_keybits },
   { "speed=", 0, &opt_speed },
   { "comment=", 1, &opt_comment },
   { "uhelper=", 0, &opt_uhelper },
@@ -1081,7 +1087,8 @@ loop_check(const char **spec, const char **type, int *flags,
       *type = opt_vfstype;
   }
 
-  *loop = ((*flags & MS_LOOP) || *loopdev || opt_offset || opt_sizelimit || opt_encryption);
+  *loop = ((*flags & MS_LOOP) || *loopdev || opt_offset || opt_sizelimit ||
+	    opt_encryption || opt_phash || opt_keybits);
   *loopfile = *spec;
 
   if (*loop) {
@@ -1113,7 +1120,7 @@ loop_check(const char **spec, const char **type, int *flags,
 	  printf(_("mount: going to use the loop device %s\n"), *loopdev);
 
 	if ((res = set_loop(*loopdev, *loopfile, offset, sizelimit,
-			    opt_encryption, pfd, &loop_opts))) {
+			    opt_encryption, opt_phash, pfd, &loop_opts, keysz))) {
 	  if (res == 2) {
 	     /* loop dev has been grabbed by some other process,
 	        try again, if not given explicitly */
@@ -1920,6 +1927,7 @@ static struct option longopts[] = {
 	{ "options", 1, 0, 'o' },
 	{ "test-opts", 1, 0, 'O' },
 	{ "pass-fd", 1, 0, 'p' },
+	{ "keybits", 1, 0, 'k' },
 	{ "types", 1, 0, 't' },
 	{ "bind", 0, 0, 'B' },
 	{ "move", 0, 0, 'M' },
@@ -2082,6 +2090,7 @@ main(int argc, char *argv[]) {
 	char *options = NULL, *test_opts = NULL, *node;
 	const char *spec = NULL;
 	char *label = NULL;
+	char *keysize = NULL;
 	char *uuid = NULL;
 	char *types = NULL;
 	char *p;
@@ -2112,7 +2121,7 @@ main(int argc, char *argv[]) {
 	initproctitle(argc, argv);
 #endif
 
-	while ((c = getopt_long (argc, argv, "aBfFhilL:Mno:O:p:rRsU:vVwt:",
+	while ((c = getopt_long (argc, argv, "aBfFhik:lL:Mno:O:p:rRsU:vVwt:",
 				 longopts, NULL)) != -1) {
 		switch (c) {
 		case 'a':	       /* mount everything in fstab */
@@ -2133,6 +2142,9 @@ main(int argc, char *argv[]) {
 		case 'i':
 			external_allowed = 0;
 			break;
+		case 'k':
+			keysize = optarg;
+			break;
 		case 'l':
 			list_with_volumelabel = 1;
 			break;
@@ -2280,6 +2292,9 @@ main(int argc, char *argv[]) {
 
 	atexit(unlock_mtab);
 
+	if (keysize && sscanf(keysize,"%d",&keysz) != 1)
+		die (EX_USAGE, _("mount: argument to --keybits or -k must be a number"));
+
 	switch (argc+specseen) {
 	case 0:
 		/* mount -a */
diff --git a/mount/rmd160.c b/mount/rmd160.c
new file mode 100644
index 0000000..3430954
--- /dev/null
+++ b/mount/rmd160.c
@@ -0,0 +1,532 @@
+/* rmd160.c  -	RIPE-MD160
+ *	Copyright (C) 1998 Free Software Foundation, Inc.
+ */
+
+/* This file was part of GnuPG. Modified for use within the Linux
+ * mount utility by Marc Mutz <Marc@Mutz.com>. None of this code is
+ * by myself. I just removed everything that you don't need when all
+ * you want to do is to use rmd160_hash_buffer().
+ * My comments are marked with (mm).  */
+
+/* GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */
+
+#include <string.h> /* (mm) for memcpy */
+#include <endian.h> /* (mm) for BIG_ENDIAN and BYTE_ORDER */
+#include "rmd160.h"
+
+/* (mm) these are used by the original GnuPG file. In order to modify
+ * that file not too much, we keep the notations. maybe it would be
+ * better to include linux/types.h and typedef __u32 to u32 and __u8
+ * to byte?  */
+typedef unsigned int u32; /* taken from e.g. util-linux's minix.h */
+typedef unsigned char byte;
+
+typedef struct {
+    u32  h0,h1,h2,h3,h4;
+    u32  nblocks;
+    byte buf[64];
+    int  count;
+} RMD160_CONTEXT;
+
+/****************
+ * Rotate a 32 bit integer by n bytes
+ */
+#if defined(__GNUC__) && defined(__i386__)
+static inline u32
+rol( u32 x, int n)
+{
+	__asm__("roll %%cl,%0"
+		:"=r" (x)
+		:"0" (x),"c" (n));
+	return x;
+}
+#else
+  #define rol(x,n) ( ((x) << (n)) | ((x) >> (32-(n))) )
+#endif
+
+/*********************************
+ * RIPEMD-160 is not patented, see (as of 25.10.97)
+ *   http://www.esat.kuleuven.ac.be/~bosselae/ripemd160.html
+ * Note that the code uses Little Endian byteorder, which is good for
+ * 386 etc, but we must add some conversion when used on a big endian box.
+ *
+ *
+ * Pseudo-code for RIPEMD-160
+ *
+ * RIPEMD-160 is an iterative hash function that operates on 32-bit words.
+ * The round function takes as input a 5-word chaining variable and a 16-word
+ * message block and maps this to a new chaining variable. All operations are
+ * defined on 32-bit words. Padding is identical to that of MD4.
+ *
+ *
+ * RIPEMD-160: definitions
+ *
+ *
+ *   nonlinear functions at bit level: exor, mux, -, mux, -
+ *
+ *   f(j, x, y, z) = x XOR y XOR z		  (0 <= j <= 15)
+ *   f(j, x, y, z) = (x AND y) OR (NOT(x) AND z)  (16 <= j <= 31)
+ *   f(j, x, y, z) = (x OR NOT(y)) XOR z	  (32 <= j <= 47)
+ *   f(j, x, y, z) = (x AND z) OR (y AND NOT(z))  (48 <= j <= 63)
+ *   f(j, x, y, z) = x XOR (y OR NOT(z))	  (64 <= j <= 79)
+ *
+ *
+ *   added constants (hexadecimal)
+ *
+ *   K(j) = 0x00000000	    (0 <= j <= 15)
+ *   K(j) = 0x5A827999	   (16 <= j <= 31)	int(2**30 x sqrt(2))
+ *   K(j) = 0x6ED9EBA1	   (32 <= j <= 47)	int(2**30 x sqrt(3))
+ *   K(j) = 0x8F1BBCDC	   (48 <= j <= 63)	int(2**30 x sqrt(5))
+ *   K(j) = 0xA953FD4E	   (64 <= j <= 79)	int(2**30 x sqrt(7))
+ *   K'(j) = 0x50A28BE6     (0 <= j <= 15)      int(2**30 x cbrt(2))
+ *   K'(j) = 0x5C4DD124    (16 <= j <= 31)      int(2**30 x cbrt(3))
+ *   K'(j) = 0x6D703EF3    (32 <= j <= 47)      int(2**30 x cbrt(5))
+ *   K'(j) = 0x7A6D76E9    (48 <= j <= 63)      int(2**30 x cbrt(7))
+ *   K'(j) = 0x00000000    (64 <= j <= 79)
+ *
+ *
+ *   selection of message word
+ *
+ *   r(j)      = j		      (0 <= j <= 15)
+ *   r(16..31) = 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8
+ *   r(32..47) = 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12
+ *   r(48..63) = 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2
+ *   r(64..79) = 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
+ *   r0(0..15) = 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12
+ *   r0(16..31)= 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2
+ *   r0(32..47)= 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13
+ *   r0(48..63)= 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14
+ *   r0(64..79)= 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
+ *
+ *
+ *   amount for rotate left (rol)
+ *
+ *   s(0..15)  = 11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8
+ *   s(16..31) = 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12
+ *   s(32..47) = 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5
+ *   s(48..63) = 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12
+ *   s(64..79) = 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
+ *   s'(0..15) = 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6
+ *   s'(16..31)= 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11
+ *   s'(32..47)= 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5
+ *   s'(48..63)= 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8
+ *   s'(64..79)= 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
+ *
+ *
+ *   initial value (hexadecimal)
+ *
+ *   h0 = 0x67452301; h1 = 0xEFCDAB89; h2 = 0x98BADCFE; h3 = 0x10325476;
+ *							h4 = 0xC3D2E1F0;
+ *
+ *
+ * RIPEMD-160: pseudo-code
+ *
+ *   It is assumed that the message after padding consists of t 16-word blocks
+ *   that will be denoted with X[i][j], with 0 <= i <= t-1 and 0 <= j <= 15.
+ *   The symbol [+] denotes addition modulo 2**32 and rol_s denotes cyclic left
+ *   shift (rotate) over s positions.
+ *
+ *
+ *   for i := 0 to t-1 {
+ *	 A := h0; B := h1; C := h2; D = h3; E = h4;
+ *	 A' := h0; B' := h1; C' := h2; D' = h3; E' = h4;
+ *	 for j := 0 to 79 {
+ *	     T := rol_s(j)(A [+] f(j, B, C, D) [+] X[i][r(j)] [+] K(j)) [+] E;
+ *	     A := E; E := D; D := rol_10(C); C := B; B := T;
+ *	     T := rol_s'(j)(A' [+] f(79-j, B', C', D') [+] X[i][r'(j)]
+						       [+] K'(j)) [+] E';
+ *	     A' := E'; E' := D'; D' := rol_10(C'); C' := B'; B' := T;
+ *	 }
+ *	 T := h1 [+] C [+] D'; h1 := h2 [+] D [+] E'; h2 := h3 [+] E [+] A';
+ *	 h3 := h4 [+] A [+] B'; h4 := h0 [+] B [+] C'; h0 := T;
+ *   }
+ */
+
+/* Some examples:
+ * ""                    9c1185a5c5e9fc54612808977ee8f548b2258d31
+ * "a"                   0bdc9d2d256b3ee9daae347be6f4dc835a467ffe
+ * "abc"                 8eb208f7e05d987a9b044a8e98c6b087f15a0bfc
+ * "message digest"      5d0689ef49d2fae572b881b123a85ffa21595f36
+ * "a...z"               f71c27109c692c1b56bbdceb5b9d2865b3708dbc
+ * "abcdbcde...nopq"     12a053384a9c0c88e405a06c27dcf49ada62eb2b
+ * "A...Za...z0...9"     b0e20b6e3116640286ed3a87a5713079b21f5189
+ * 8 times "1234567890"  9b752e45573d4b39f4dbd3323cab82bf63326bfb
+ * 1 million times "a"   52783243c1697bdbe16d37f97f68f08325dc1528
+ */
+
+
+static void
+rmd160_init( RMD160_CONTEXT *hd )
+{
+    hd->h0 = 0x67452301;
+    hd->h1 = 0xEFCDAB89;
+    hd->h2 = 0x98BADCFE;
+    hd->h3 = 0x10325476;
+    hd->h4 = 0xC3D2E1F0;
+    hd->nblocks = 0;
+    hd->count = 0;
+}
+
+
+
+/****************
+ * Transform the message X which consists of 16 32-bit-words
+ */
+static void
+transform( RMD160_CONTEXT *hd, const byte *data )
+{
+    u32 a,b,c,d,e,aa,bb,cc,dd,ee,t;
+  #if BYTE_ORDER == BIG_ENDIAN
+    u32 x[16];
+    { int i;
+      byte *p2, *p1;
+      for(i=0, p1=data, p2=(byte*)x; i < 16; i++, p2 += 4 ) {
+	p2[3] = *p1++;
+	p2[2] = *p1++;
+	p2[1] = *p1++;
+	p2[0] = *p1++;
+      }
+    }
+  #else
+   #if 0
+    u32 *x =(u32*)data;
+   #else
+    /* this version is better because it is always aligned;
+     * The performance penalty on a 586-100 is about 6% which
+     * is acceptable - because the data is more local it might
+     * also be possible that this is faster on some machines.
+     * This function (when compiled with -02 on gcc 2.7.2)
+     * executes on a 586-100 (39.73 bogomips) at about 1900kb/sec;
+     * [measured with a 4MB data and "gpgm --print-md rmd160"] */
+    u32 x[16];
+    memcpy( x, data, 64 );
+   #endif
+  #endif
+
+
+#define K0  0x00000000
+#define K1  0x5A827999
+#define K2  0x6ED9EBA1
+#define K3  0x8F1BBCDC
+#define K4  0xA953FD4E
+#define KK0 0x50A28BE6
+#define KK1 0x5C4DD124
+#define KK2 0x6D703EF3
+#define KK3 0x7A6D76E9
+#define KK4 0x00000000
+#define F0(x,y,z)   ( (x) ^ (y) ^ (z) )
+#define F1(x,y,z)   ( ((x) & (y)) | (~(x) & (z)) )
+#define F2(x,y,z)   ( ((x) | ~(y)) ^ (z) )
+#define F3(x,y,z)   ( ((x) & (z)) | ((y) & ~(z)) )
+#define F4(x,y,z)   ( (x) ^ ((y) | ~(z)) )
+#define R(a,b,c,d,e,f,k,r,s) do { t = a + f(b,c,d) + k + x[r]; \
+				  a = rol(t,s) + e;	       \
+				  c = rol(c,10);	       \
+				} while(0)
+
+    /* left lane */
+    a = hd->h0;
+    b = hd->h1;
+    c = hd->h2;
+    d = hd->h3;
+    e = hd->h4;
+    R( a, b, c, d, e, F0, K0,  0, 11 );
+    R( e, a, b, c, d, F0, K0,  1, 14 );
+    R( d, e, a, b, c, F0, K0,  2, 15 );
+    R( c, d, e, a, b, F0, K0,  3, 12 );
+    R( b, c, d, e, a, F0, K0,  4,  5 );
+    R( a, b, c, d, e, F0, K0,  5,  8 );
+    R( e, a, b, c, d, F0, K0,  6,  7 );
+    R( d, e, a, b, c, F0, K0,  7,  9 );
+    R( c, d, e, a, b, F0, K0,  8, 11 );
+    R( b, c, d, e, a, F0, K0,  9, 13 );
+    R( a, b, c, d, e, F0, K0, 10, 14 );
+    R( e, a, b, c, d, F0, K0, 11, 15 );
+    R( d, e, a, b, c, F0, K0, 12,  6 );
+    R( c, d, e, a, b, F0, K0, 13,  7 );
+    R( b, c, d, e, a, F0, K0, 14,  9 );
+    R( a, b, c, d, e, F0, K0, 15,  8 );
+    R( e, a, b, c, d, F1, K1,  7,  7 );
+    R( d, e, a, b, c, F1, K1,  4,  6 );
+    R( c, d, e, a, b, F1, K1, 13,  8 );
+    R( b, c, d, e, a, F1, K1,  1, 13 );
+    R( a, b, c, d, e, F1, K1, 10, 11 );
+    R( e, a, b, c, d, F1, K1,  6,  9 );
+    R( d, e, a, b, c, F1, K1, 15,  7 );
+    R( c, d, e, a, b, F1, K1,  3, 15 );
+    R( b, c, d, e, a, F1, K1, 12,  7 );
+    R( a, b, c, d, e, F1, K1,  0, 12 );
+    R( e, a, b, c, d, F1, K1,  9, 15 );
+    R( d, e, a, b, c, F1, K1,  5,  9 );
+    R( c, d, e, a, b, F1, K1,  2, 11 );
+    R( b, c, d, e, a, F1, K1, 14,  7 );
+    R( a, b, c, d, e, F1, K1, 11, 13 );
+    R( e, a, b, c, d, F1, K1,  8, 12 );
+    R( d, e, a, b, c, F2, K2,  3, 11 );
+    R( c, d, e, a, b, F2, K2, 10, 13 );
+    R( b, c, d, e, a, F2, K2, 14,  6 );
+    R( a, b, c, d, e, F2, K2,  4,  7 );
+    R( e, a, b, c, d, F2, K2,  9, 14 );
+    R( d, e, a, b, c, F2, K2, 15,  9 );
+    R( c, d, e, a, b, F2, K2,  8, 13 );
+    R( b, c, d, e, a, F2, K2,  1, 15 );
+    R( a, b, c, d, e, F2, K2,  2, 14 );
+    R( e, a, b, c, d, F2, K2,  7,  8 );
+    R( d, e, a, b, c, F2, K2,  0, 13 );
+    R( c, d, e, a, b, F2, K2,  6,  6 );
+    R( b, c, d, e, a, F2, K2, 13,  5 );
+    R( a, b, c, d, e, F2, K2, 11, 12 );
+    R( e, a, b, c, d, F2, K2,  5,  7 );
+    R( d, e, a, b, c, F2, K2, 12,  5 );
+    R( c, d, e, a, b, F3, K3,  1, 11 );
+    R( b, c, d, e, a, F3, K3,  9, 12 );
+    R( a, b, c, d, e, F3, K3, 11, 14 );
+    R( e, a, b, c, d, F3, K3, 10, 15 );
+    R( d, e, a, b, c, F3, K3,  0, 14 );
+    R( c, d, e, a, b, F3, K3,  8, 15 );
+    R( b, c, d, e, a, F3, K3, 12,  9 );
+    R( a, b, c, d, e, F3, K3,  4,  8 );
+    R( e, a, b, c, d, F3, K3, 13,  9 );
+    R( d, e, a, b, c, F3, K3,  3, 14 );
+    R( c, d, e, a, b, F3, K3,  7,  5 );
+    R( b, c, d, e, a, F3, K3, 15,  6 );
+    R( a, b, c, d, e, F3, K3, 14,  8 );
+    R( e, a, b, c, d, F3, K3,  5,  6 );
+    R( d, e, a, b, c, F3, K3,  6,  5 );
+    R( c, d, e, a, b, F3, K3,  2, 12 );
+    R( b, c, d, e, a, F4, K4,  4,  9 );
+    R( a, b, c, d, e, F4, K4,  0, 15 );
+    R( e, a, b, c, d, F4, K4,  5,  5 );
+    R( d, e, a, b, c, F4, K4,  9, 11 );
+    R( c, d, e, a, b, F4, K4,  7,  6 );
+    R( b, c, d, e, a, F4, K4, 12,  8 );
+    R( a, b, c, d, e, F4, K4,  2, 13 );
+    R( e, a, b, c, d, F4, K4, 10, 12 );
+    R( d, e, a, b, c, F4, K4, 14,  5 );
+    R( c, d, e, a, b, F4, K4,  1, 12 );
+    R( b, c, d, e, a, F4, K4,  3, 13 );
+    R( a, b, c, d, e, F4, K4,  8, 14 );
+    R( e, a, b, c, d, F4, K4, 11, 11 );
+    R( d, e, a, b, c, F4, K4,  6,  8 );
+    R( c, d, e, a, b, F4, K4, 15,  5 );
+    R( b, c, d, e, a, F4, K4, 13,  6 );
+
+    aa = a; bb = b; cc = c; dd = d; ee = e;
+
+    /* right lane */
+    a = hd->h0;
+    b = hd->h1;
+    c = hd->h2;
+    d = hd->h3;
+    e = hd->h4;
+    R( a, b, c, d, e, F4, KK0,	5,  8);
+    R( e, a, b, c, d, F4, KK0, 14,  9);
+    R( d, e, a, b, c, F4, KK0,	7,  9);
+    R( c, d, e, a, b, F4, KK0,	0, 11);
+    R( b, c, d, e, a, F4, KK0,	9, 13);
+    R( a, b, c, d, e, F4, KK0,	2, 15);
+    R( e, a, b, c, d, F4, KK0, 11, 15);
+    R( d, e, a, b, c, F4, KK0,	4,  5);
+    R( c, d, e, a, b, F4, KK0, 13,  7);
+    R( b, c, d, e, a, F4, KK0,	6,  7);
+    R( a, b, c, d, e, F4, KK0, 15,  8);
+    R( e, a, b, c, d, F4, KK0,	8, 11);
+    R( d, e, a, b, c, F4, KK0,	1, 14);
+    R( c, d, e, a, b, F4, KK0, 10, 14);
+    R( b, c, d, e, a, F4, KK0,	3, 12);
+    R( a, b, c, d, e, F4, KK0, 12,  6);
+    R( e, a, b, c, d, F3, KK1,	6,  9);
+    R( d, e, a, b, c, F3, KK1, 11, 13);
+    R( c, d, e, a, b, F3, KK1,	3, 15);
+    R( b, c, d, e, a, F3, KK1,	7,  7);
+    R( a, b, c, d, e, F3, KK1,	0, 12);
+    R( e, a, b, c, d, F3, KK1, 13,  8);
+    R( d, e, a, b, c, F3, KK1,	5,  9);
+    R( c, d, e, a, b, F3, KK1, 10, 11);
+    R( b, c, d, e, a, F3, KK1, 14,  7);
+    R( a, b, c, d, e, F3, KK1, 15,  7);
+    R( e, a, b, c, d, F3, KK1,	8, 12);
+    R( d, e, a, b, c, F3, KK1, 12,  7);
+    R( c, d, e, a, b, F3, KK1,	4,  6);
+    R( b, c, d, e, a, F3, KK1,	9, 15);
+    R( a, b, c, d, e, F3, KK1,	1, 13);
+    R( e, a, b, c, d, F3, KK1,	2, 11);
+    R( d, e, a, b, c, F2, KK2, 15,  9);
+    R( c, d, e, a, b, F2, KK2,	5,  7);
+    R( b, c, d, e, a, F2, KK2,	1, 15);
+    R( a, b, c, d, e, F2, KK2,	3, 11);
+    R( e, a, b, c, d, F2, KK2,	7,  8);
+    R( d, e, a, b, c, F2, KK2, 14,  6);
+    R( c, d, e, a, b, F2, KK2,	6,  6);
+    R( b, c, d, e, a, F2, KK2,	9, 14);
+    R( a, b, c, d, e, F2, KK2, 11, 12);
+    R( e, a, b, c, d, F2, KK2,	8, 13);
+    R( d, e, a, b, c, F2, KK2, 12,  5);
+    R( c, d, e, a, b, F2, KK2,	2, 14);
+    R( b, c, d, e, a, F2, KK2, 10, 13);
+    R( a, b, c, d, e, F2, KK2,	0, 13);
+    R( e, a, b, c, d, F2, KK2,	4,  7);
+    R( d, e, a, b, c, F2, KK2, 13,  5);
+    R( c, d, e, a, b, F1, KK3,	8, 15);
+    R( b, c, d, e, a, F1, KK3,	6,  5);
+    R( a, b, c, d, e, F1, KK3,	4,  8);
+    R( e, a, b, c, d, F1, KK3,	1, 11);
+    R( d, e, a, b, c, F1, KK3,	3, 14);
+    R( c, d, e, a, b, F1, KK3, 11, 14);
+    R( b, c, d, e, a, F1, KK3, 15,  6);
+    R( a, b, c, d, e, F1, KK3,	0, 14);
+    R( e, a, b, c, d, F1, KK3,	5,  6);
+    R( d, e, a, b, c, F1, KK3, 12,  9);
+    R( c, d, e, a, b, F1, KK3,	2, 12);
+    R( b, c, d, e, a, F1, KK3, 13,  9);
+    R( a, b, c, d, e, F1, KK3,	9, 12);
+    R( e, a, b, c, d, F1, KK3,	7,  5);
+    R( d, e, a, b, c, F1, KK3, 10, 15);
+    R( c, d, e, a, b, F1, KK3, 14,  8);
+    R( b, c, d, e, a, F0, KK4, 12,  8);
+    R( a, b, c, d, e, F0, KK4, 15,  5);
+    R( e, a, b, c, d, F0, KK4, 10, 12);
+    R( d, e, a, b, c, F0, KK4,	4,  9);
+    R( c, d, e, a, b, F0, KK4,	1, 12);
+    R( b, c, d, e, a, F0, KK4,	5,  5);
+    R( a, b, c, d, e, F0, KK4,	8, 14);
+    R( e, a, b, c, d, F0, KK4,	7,  6);
+    R( d, e, a, b, c, F0, KK4,	6,  8);
+    R( c, d, e, a, b, F0, KK4,	2, 13);
+    R( b, c, d, e, a, F0, KK4, 13,  6);
+    R( a, b, c, d, e, F0, KK4, 14,  5);
+    R( e, a, b, c, d, F0, KK4,	0, 15);
+    R( d, e, a, b, c, F0, KK4,	3, 13);
+    R( c, d, e, a, b, F0, KK4,	9, 11);
+    R( b, c, d, e, a, F0, KK4, 11, 11);
+
+
+    t	   = hd->h1 + d + cc;
+    hd->h1 = hd->h2 + e + dd;
+    hd->h2 = hd->h3 + a + ee;
+    hd->h3 = hd->h4 + b + aa;
+    hd->h4 = hd->h0 + c + bb;
+    hd->h0 = t;
+}
+
+
+/* Update the message digest with the contents
+ * of INBUF with length INLEN.
+ */
+static void
+rmd160_write( RMD160_CONTEXT *hd, const byte *inbuf, size_t inlen)
+{
+    if( hd->count == 64 ) { /* flush the buffer */
+	transform( hd, hd->buf );
+	hd->count = 0;
+	hd->nblocks++;
+    }
+    if( !inbuf )
+	return;
+    if( hd->count ) {
+	for( ; inlen && hd->count < 64; inlen-- )
+	    hd->buf[hd->count++] = *inbuf++;
+	rmd160_write( hd, NULL, 0 );
+	if( !inlen )
+	    return;
+    }
+
+    while( inlen >= 64 ) {
+	transform( hd, inbuf );
+	hd->count = 0;
+	hd->nblocks++;
+	inlen -= 64;
+	inbuf += 64;
+    }
+    for( ; inlen && hd->count < 64; inlen-- )
+	hd->buf[hd->count++] = *inbuf++;
+}
+
+/* The routine terminates the computation
+ */
+
+static void
+rmd160_final( RMD160_CONTEXT *hd )
+{
+    u32 t, msb, lsb;
+    byte *p;
+
+    rmd160_write(hd, NULL, 0); /* flush */;
+
+    msb = 0;
+    t = hd->nblocks;
+    if( (lsb = t << 6) < t ) /* multiply by 64 to make a byte count */
+	msb++;
+    msb += t >> 26;
+    t = lsb;
+    if( (lsb = t + hd->count) < t ) /* add the count */
+	msb++;
+    t = lsb;
+    if( (lsb = t << 3) < t ) /* multiply by 8 to make a bit count */
+	msb++;
+    msb += t >> 29;
+
+    if( hd->count < 56 ) { /* enough room */
+	hd->buf[hd->count++] = 0x80; /* pad */
+	while( hd->count < 56 )
+	    hd->buf[hd->count++] = 0;  /* pad */
+    }
+    else { /* need one extra block */
+	hd->buf[hd->count++] = 0x80; /* pad character */
+	while( hd->count < 64 )
+	    hd->buf[hd->count++] = 0;
+	rmd160_write(hd, NULL, 0);  /* flush */;
+	memset(hd->buf, 0, 56 ); /* fill next block with zeroes */
+    }
+    /* append the 64 bit count */
+    hd->buf[56] = lsb	   ;
+    hd->buf[57] = lsb >>  8;
+    hd->buf[58] = lsb >> 16;
+    hd->buf[59] = lsb >> 24;
+    hd->buf[60] = msb	   ;
+    hd->buf[61] = msb >>  8;
+    hd->buf[62] = msb >> 16;
+    hd->buf[63] = msb >> 24;
+    transform( hd, hd->buf );
+
+    p = hd->buf;
+  #if BYTE_ORDER == BIG_ENDIAN
+    #define X(a) do { *p++ = hd->h##a	   ; *p++ = hd->h##a >> 8;	\
+		      *p++ = hd->h##a >> 16; *p++ = hd->h##a >> 24; } while(0)
+  #else /* little endian */
+    #define X(a) do { *(u32*)p = hd->h##a ; p += 4; } while(0)
+  #endif
+    X(0);
+    X(1);
+    X(2);
+    X(3);
+    X(4);
+  #undef X
+}
+
+/****************
+ * Shortcut functions which puts the hash value of the supplied buffer
+ * into outbuf which must have a size of 20 bytes.
+ */
+void
+rmd160_hash_buffer( unsigned char *outbuf, const unsigned char *buffer, size_t length )
+{
+    RMD160_CONTEXT hd;
+
+    rmd160_init( &hd );
+    rmd160_write( &hd, buffer, length );
+    rmd160_final( &hd );
+    memcpy( outbuf, hd.buf, 20 );
+}
diff --git a/mount/rmd160.h b/mount/rmd160.h
new file mode 100644
index 0000000..4b2c61d
--- /dev/null
+++ b/mount/rmd160.h
@@ -0,0 +1,11 @@
+#ifndef RMD160_H
+#define RMD160_H
+
+#define RMD160_HASH_SIZE 20
+
+void
+rmd160_hash_buffer( unsigned char *outbuf, const unsigned char *buffer, size_t length );
+
+#endif /*RMD160_H*/
+
+
diff --git a/mount/sha512.c b/mount/sha512.c
new file mode 100644
index 0000000..f717c8b
--- /dev/null
+++ b/mount/sha512.c
@@ -0,0 +1,432 @@
+/*
+ *  sha512.c
+ *
+ *  Written by Jari Ruusu, April 16 2001
+ *
+ *  Copyright 2001 by Jari Ruusu.
+ *  Redistribution of this file is permitted under the GNU Public License.
+ */
+
+#include <string.h>
+#include <sys/types.h>
+#include "sha512.h"
+
+/* Define one or more of these. If none is defined, you get all of them */
+#if !defined(SHA256_NEEDED)&&!defined(SHA512_NEEDED)&&!defined(SHA384_NEEDED)
+# define SHA256_NEEDED  1
+# define SHA512_NEEDED  1
+# define SHA384_NEEDED  1
+#endif
+
+#if defined(SHA256_NEEDED)
+static const u_int32_t sha256_hashInit[8] = {
+    0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c,
+    0x1f83d9ab, 0x5be0cd19
+};
+static const u_int32_t sha256_K[64] = {
+    0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
+    0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
+    0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
+    0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+    0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
+    0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
+    0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
+    0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+    0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
+    0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
+    0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+};
+#endif
+
+#if defined(SHA512_NEEDED)
+static const u_int64_t sha512_hashInit[8] = {
+    0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL, 0x3c6ef372fe94f82bULL,
+    0xa54ff53a5f1d36f1ULL, 0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
+    0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
+};
+#endif
+
+#if defined(SHA384_NEEDED)
+static const u_int64_t sha384_hashInit[8] = {
+    0xcbbb9d5dc1059ed8ULL, 0x629a292a367cd507ULL, 0x9159015a3070dd17ULL,
+    0x152fecd8f70e5939ULL, 0x67332667ffc00b31ULL, 0x8eb44a8768581511ULL,
+    0xdb0c2e0d64f98fa7ULL, 0x47b5481dbefa4fa4ULL
+};
+#endif
+
+#if defined(SHA512_NEEDED) || defined(SHA384_NEEDED)
+static const u_int64_t sha512_K[80] = {
+    0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
+    0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
+    0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
+    0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
+    0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
+    0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
+    0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
+    0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
+    0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
+    0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
+    0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
+    0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
+    0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
+    0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
+    0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
+    0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
+    0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
+    0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
+    0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
+    0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
+    0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
+    0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
+    0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
+    0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
+    0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
+    0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
+    0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
+};
+#endif
+
+#define Ch(x,y,z)   (((x) & (y)) ^ ((~(x)) & (z)))
+#define Maj(x,y,z)  (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+#define R(x,y)      ((y) >> (x))
+
+#if defined(SHA256_NEEDED)
+void sha256_init(sha256_context *ctx)
+{
+    memcpy(&ctx->sha_H[0], &sha256_hashInit[0], sizeof(ctx->sha_H));
+    ctx->sha_blocks = 0;
+    ctx->sha_bufCnt = 0;
+}
+
+#define S(x,y)      (((y) >> (x)) | ((y) << (32 - (x))))
+#define uSig0(x)    ((S(2,(x))) ^ (S(13,(x))) ^ (S(22,(x))))
+#define uSig1(x)    ((S(6,(x))) ^ (S(11,(x))) ^ (S(25,(x))))
+#define lSig0(x)    ((S(7,(x))) ^ (S(18,(x))) ^ (R(3,(x))))
+#define lSig1(x)    ((S(17,(x))) ^ (S(19,(x))) ^ (R(10,(x))))
+
+static void sha256_transform(sha256_context *ctx, const unsigned char *datap)
+{
+    register int    j;
+    u_int32_t       a, b, c, d, e, f, g, h;
+    u_int32_t       T1, T2, W[64], Wm2, Wm15;
+
+    /* read the data, big endian byte order */
+    j = 0;
+    do {
+        W[j] = (((u_int32_t)(datap[0]))<<24) | (((u_int32_t)(datap[1]))<<16) |
+               (((u_int32_t)(datap[2]))<<8 ) | ((u_int32_t)(datap[3]));
+        datap += 4;
+    } while(++j < 16);
+
+    /* initialize variables a...h */
+    a = ctx->sha_H[0];
+    b = ctx->sha_H[1];
+    c = ctx->sha_H[2];
+    d = ctx->sha_H[3];
+    e = ctx->sha_H[4];
+    f = ctx->sha_H[5];
+    g = ctx->sha_H[6];
+    h = ctx->sha_H[7];
+
+    /* apply compression function */
+    j = 0;
+    do {
+        if(j >= 16) {
+            Wm2 = W[j - 2];
+            Wm15 = W[j - 15];
+            W[j] = lSig1(Wm2) + W[j - 7] + lSig0(Wm15) + W[j - 16];
+        }
+        T1 = h + uSig1(e) + Ch(e,f,g) + sha256_K[j] + W[j];
+        T2 = uSig0(a) + Maj(a,b,c);
+        h = g; g = f; f = e;
+        e = d + T1;
+        d = c; c = b; b = a;
+        a = T1 + T2;
+    } while(++j < 64);
+
+    /* compute intermediate hash value */
+    ctx->sha_H[0] += a;
+    ctx->sha_H[1] += b;
+    ctx->sha_H[2] += c;
+    ctx->sha_H[3] += d;
+    ctx->sha_H[4] += e;
+    ctx->sha_H[5] += f;
+    ctx->sha_H[6] += g;
+    ctx->sha_H[7] += h;
+
+    ctx->sha_blocks++;
+}
+
+void sha256_write(sha256_context *ctx, const unsigned char *datap, int length)
+{
+    while(length > 0) {
+        if(!ctx->sha_bufCnt) {
+            while(length >= sizeof(ctx->sha_out)) {
+                sha256_transform(ctx, datap);
+                datap += sizeof(ctx->sha_out);
+                length -= sizeof(ctx->sha_out);
+            }
+            if(!length) return;
+        }
+        ctx->sha_out[ctx->sha_bufCnt] = *datap++;
+        length--;
+        if(++ctx->sha_bufCnt == sizeof(ctx->sha_out)) {
+            sha256_transform(ctx, &ctx->sha_out[0]);
+            ctx->sha_bufCnt = 0;
+        }
+    }
+}
+
+void sha256_final(sha256_context *ctx)
+{
+    register int    j;
+    u_int64_t       bitLength;
+    u_int32_t       i;
+    unsigned char   padByte, *datap;
+
+    bitLength = (ctx->sha_blocks << 9) | (ctx->sha_bufCnt << 3);
+    padByte = 0x80;
+    sha256_write(ctx, &padByte, 1);
+
+    /* pad extra space with zeroes */
+    padByte = 0;
+    while(ctx->sha_bufCnt != 56) {
+        sha256_write(ctx, &padByte, 1);
+    }
+
+    /* write bit length, big endian byte order */
+    ctx->sha_out[56] = bitLength >> 56;
+    ctx->sha_out[57] = bitLength >> 48;
+    ctx->sha_out[58] = bitLength >> 40;
+    ctx->sha_out[59] = bitLength >> 32;
+    ctx->sha_out[60] = bitLength >> 24;
+    ctx->sha_out[61] = bitLength >> 16;
+    ctx->sha_out[62] = bitLength >> 8;
+    ctx->sha_out[63] = bitLength;
+    sha256_transform(ctx, &ctx->sha_out[0]);
+
+    /* return results in ctx->sha_out[0...31] */
+    datap = &ctx->sha_out[0];
+    j = 0;
+    do {
+        i = ctx->sha_H[j];
+        datap[0] = i >> 24;
+        datap[1] = i >> 16;
+        datap[2] = i >> 8;
+        datap[3] = i;
+        datap += 4;
+    } while(++j < 8);
+
+    /* clear sensitive information */
+    memset(&ctx->sha_out[32], 0, sizeof(sha256_context) - 32);
+}
+
+void sha256_hash_buffer(const unsigned char *ib, size_t ile, unsigned char *ob, size_t ole)
+{
+    sha256_context ctx;
+
+    if(ole < 1) return;
+    memset(ob, 0, ole);
+    if(ole > 32) ole = 32;
+    sha256_init(&ctx);
+    sha256_write(&ctx, ib, ile);
+    sha256_final(&ctx);
+    memcpy(ob, &ctx.sha_out[0], ole);
+    memset(&ctx, 0, sizeof(ctx));
+}
+
+#endif
+
+#if defined(SHA512_NEEDED)
+void sha512_init(sha512_context *ctx)
+{
+    memcpy(&ctx->sha_H[0], &sha512_hashInit[0], sizeof(ctx->sha_H));
+    ctx->sha_blocks = 0;
+    ctx->sha_blocksMSB = 0;
+    ctx->sha_bufCnt = 0;
+}
+#endif
+
+#if defined(SHA512_NEEDED) || defined(SHA384_NEEDED)
+#undef S
+#undef uSig0
+#undef uSig1
+#undef lSig0
+#undef lSig1
+#define S(x,y)      (((y) >> (x)) | ((y) << (64 - (x))))
+#define uSig0(x)    ((S(28,(x))) ^ (S(34,(x))) ^ (S(39,(x))))
+#define uSig1(x)    ((S(14,(x))) ^ (S(18,(x))) ^ (S(41,(x))))
+#define lSig0(x)    ((S(1,(x))) ^ (S(8,(x))) ^ (R(7,(x))))
+#define lSig1(x)    ((S(19,(x))) ^ (S(61,(x))) ^ (R(6,(x))))
+
+static void sha512_transform(sha512_context *ctx, const unsigned char *datap)
+{
+    register int    j;
+    u_int64_t       a, b, c, d, e, f, g, h;
+    u_int64_t       T1, T2, W[80], Wm2, Wm15;
+
+    /* read the data, big endian byte order */
+    j = 0;
+    do {
+        W[j] = (((u_int64_t)(datap[0]))<<56) | (((u_int64_t)(datap[1]))<<48) |
+               (((u_int64_t)(datap[2]))<<40) | (((u_int64_t)(datap[3]))<<32) |
+               (((u_int64_t)(datap[4]))<<24) | (((u_int64_t)(datap[5]))<<16) |
+               (((u_int64_t)(datap[6]))<<8 ) | ((u_int64_t)(datap[7]));
+        datap += 8;
+    } while(++j < 16);
+
+    /* initialize variables a...h */
+    a = ctx->sha_H[0];
+    b = ctx->sha_H[1];
+    c = ctx->sha_H[2];
+    d = ctx->sha_H[3];
+    e = ctx->sha_H[4];
+    f = ctx->sha_H[5];
+    g = ctx->sha_H[6];
+    h = ctx->sha_H[7];
+
+    /* apply compression function */
+    j = 0;
+    do {
+        if(j >= 16) {
+            Wm2 = W[j - 2];
+            Wm15 = W[j - 15];
+            W[j] = lSig1(Wm2) + W[j - 7] + lSig0(Wm15) + W[j - 16];
+        }
+        T1 = h + uSig1(e) + Ch(e,f,g) + sha512_K[j] + W[j];
+        T2 = uSig0(a) + Maj(a,b,c);
+        h = g; g = f; f = e;
+        e = d + T1;
+        d = c; c = b; b = a;
+        a = T1 + T2;
+    } while(++j < 80);
+
+    /* compute intermediate hash value */
+    ctx->sha_H[0] += a;
+    ctx->sha_H[1] += b;
+    ctx->sha_H[2] += c;
+    ctx->sha_H[3] += d;
+    ctx->sha_H[4] += e;
+    ctx->sha_H[5] += f;
+    ctx->sha_H[6] += g;
+    ctx->sha_H[7] += h;
+
+    ctx->sha_blocks++;
+    if(!ctx->sha_blocks) ctx->sha_blocksMSB++;
+}
+
+void sha512_write(sha512_context *ctx, const unsigned char *datap, int length)
+{
+    while(length > 0) {
+        if(!ctx->sha_bufCnt) {
+            while(length >= sizeof(ctx->sha_out)) {
+                sha512_transform(ctx, datap);
+                datap += sizeof(ctx->sha_out);
+                length -= sizeof(ctx->sha_out);
+            }
+            if(!length) return;
+        }
+        ctx->sha_out[ctx->sha_bufCnt] = *datap++;
+        length--;
+        if(++ctx->sha_bufCnt == sizeof(ctx->sha_out)) {
+            sha512_transform(ctx, &ctx->sha_out[0]);
+            ctx->sha_bufCnt = 0;
+        }
+    }
+}
+
+void sha512_final(sha512_context *ctx)
+{
+    register int    j;
+    u_int64_t       bitLength, bitLengthMSB;
+    u_int64_t       i;
+    unsigned char   padByte, *datap;
+
+    bitLength = (ctx->sha_blocks << 10) | (ctx->sha_bufCnt << 3);
+    bitLengthMSB = (ctx->sha_blocksMSB << 10) | (ctx->sha_blocks >> 54);
+    padByte = 0x80;
+    sha512_write(ctx, &padByte, 1);
+
+    /* pad extra space with zeroes */
+    padByte = 0;
+    while(ctx->sha_bufCnt != 112) {
+        sha512_write(ctx, &padByte, 1);
+    }
+
+    /* write bit length, big endian byte order */
+    ctx->sha_out[112] = bitLengthMSB >> 56;
+    ctx->sha_out[113] = bitLengthMSB >> 48;
+    ctx->sha_out[114] = bitLengthMSB >> 40;
+    ctx->sha_out[115] = bitLengthMSB >> 32;
+    ctx->sha_out[116] = bitLengthMSB >> 24;
+    ctx->sha_out[117] = bitLengthMSB >> 16;
+    ctx->sha_out[118] = bitLengthMSB >> 8;
+    ctx->sha_out[119] = bitLengthMSB;
+    ctx->sha_out[120] = bitLength >> 56;
+    ctx->sha_out[121] = bitLength >> 48;
+    ctx->sha_out[122] = bitLength >> 40;
+    ctx->sha_out[123] = bitLength >> 32;
+    ctx->sha_out[124] = bitLength >> 24;
+    ctx->sha_out[125] = bitLength >> 16;
+    ctx->sha_out[126] = bitLength >> 8;
+    ctx->sha_out[127] = bitLength;
+    sha512_transform(ctx, &ctx->sha_out[0]);
+
+    /* return results in ctx->sha_out[0...63] */
+    datap = &ctx->sha_out[0];
+    j = 0;
+    do {
+        i = ctx->sha_H[j];
+        datap[0] = i >> 56;
+        datap[1] = i >> 48;
+        datap[2] = i >> 40;
+        datap[3] = i >> 32;
+        datap[4] = i >> 24;
+        datap[5] = i >> 16;
+        datap[6] = i >> 8;
+        datap[7] = i;
+        datap += 8;
+    } while(++j < 8);
+
+    /* clear sensitive information */
+    memset(&ctx->sha_out[64], 0, sizeof(sha512_context) - 64);
+}
+
+void sha512_hash_buffer(const unsigned char *ib, size_t ile, unsigned char *ob, size_t ole)
+{
+    sha512_context ctx;
+
+    if(ole < 1) return;
+    memset(ob, 0, ole);
+    if(ole > 64) ole = 64;
+    sha512_init(&ctx);
+    sha512_write(&ctx, ib, ile);
+    sha512_final(&ctx);
+    memcpy(ob, &ctx.sha_out[0], ole);
+    memset(&ctx, 0, sizeof(ctx));
+}
+#endif
+
+#if defined(SHA384_NEEDED)
+void sha384_init(sha512_context *ctx)
+{
+    memcpy(&ctx->sha_H[0], &sha384_hashInit[0], sizeof(ctx->sha_H));
+    ctx->sha_blocks = 0;
+    ctx->sha_blocksMSB = 0;
+    ctx->sha_bufCnt = 0;
+}
+
+void sha384_hash_buffer(const unsigned char *ib, size_t ile, unsigned char *ob, size_t ole)
+{
+    sha512_context ctx;
+
+    if(ole < 1) return;
+    memset(ob, 0, ole);
+    if(ole > 48) ole = 48;
+    sha384_init(&ctx);
+    sha512_write(&ctx, ib, ile);
+    sha512_final(&ctx);
+    memcpy(ob, &ctx.sha_out[0], ole);
+    memset(&ctx, 0, sizeof(ctx));
+}
+#endif
diff --git a/mount/sha512.h b/mount/sha512.h
new file mode 100644
index 0000000..4b57c01
--- /dev/null
+++ b/mount/sha512.h
@@ -0,0 +1,45 @@
+/*
+ *  sha512.h
+ *
+ *  Written by Jari Ruusu, April 16 2001
+ *
+ *  Copyright 2001 by Jari Ruusu.
+ *  Redistribution of this file is permitted under the GNU Public License.
+ */
+
+#include <sys/types.h>
+
+typedef struct {
+    unsigned char   sha_out[64];    /* results are here, bytes 0...31 */
+    u_int32_t       sha_H[8];
+    u_int64_t       sha_blocks;
+    int             sha_bufCnt;
+} sha256_context;
+
+typedef struct {
+    unsigned char   sha_out[128];   /* results are here, bytes 0...63 */
+    u_int64_t       sha_H[8];
+    u_int64_t       sha_blocks;
+    u_int64_t       sha_blocksMSB;
+    int             sha_bufCnt;
+} sha512_context;
+
+/* no sha384_context, use sha512_context */
+
+/* 256 bit hash, provides 128 bits of security against collision attacks */
+extern void sha256_init(sha256_context *);
+extern void sha256_write(sha256_context *, const unsigned char *, int);
+extern void sha256_final(sha256_context *);
+extern void sha256_hash_buffer(const unsigned char *, size_t, unsigned char *, size_t);
+
+/* 512 bit hash, provides 256 bits of security against collision attacks */
+extern void sha512_init(sha512_context *);
+extern void sha512_write(sha512_context *, const unsigned char *, int);
+extern void sha512_final(sha512_context *);
+extern void sha512_hash_buffer(const unsigned char *, size_t, unsigned char *, size_t);
+
+/* 384 bit hash, provides 192 bits of security against collision attacks */
+extern void sha384_init(sha512_context *);
+/* no sha384_write(), use sha512_write() */
+/* no sha384_final(), use sha512_final(), result in ctx->sha_out[0...47]  */
+extern void sha384_hash_buffer(const unsigned char *, size_t, unsigned char *, size_t);
-- 
1.6.4.2

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File util-linux-2.17.1-mount_losetup_crypto.patch of Package util-linux (Revision 8aecc3ef7f68715290d8cdd686af427a)

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