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can create v4 signatures

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This commit is contained in:
Werner Koch 1998-05-13 17:53:36 +00:00
parent 69cf10ffab
commit 0e5a31d7be
42 changed files with 1101 additions and 325 deletions
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4
ChangeLog
View File

@ -1,3 +1,7 @@
Mon May 11 10:21:31 1998 Werner Koch (wk@isil.d.shuttle.de)
* configure.in (PRINTABLE_OS_NAME): Linux is now GNU/Linux
Tue Apr 14 19:08:05 1998 Werner Koch (wk@isil.d.shuttle.de)
* [all files]: Applied Matthew Skala's typo and grammar fixes.

15
NEWS
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@ -1,3 +1,18 @@
Noteworthy changes in version 0.2.18
------------------------------------
* splitted cipher/random.c, add new option "--disable-dev-random"
to configure to support the development of a random source for
other systems. Prepared sourcefiles rand-unix.c, rand-w32.c
and rand-dummy.c (which is used to allow compilation on systems
without a random source).
* fixed a small bug in the key generation (it was possible that 48 bits
of a key were not taken from the random pool)
* Add key generation for DSA (signature only)
Noteworthy changes in version 0.2.17
------------------------------------

3
THANKS
View File

@ -4,14 +4,17 @@ code. Here is a list of those people. Help me keep it complete and free of
errors.
Anand Kumria wildfire@progsoc.uts.edu.au
Charles Levert charles@comm.polymtl.ca
Daniel Eisenbud eisenbud@cs.swarthmore.edu
Detlef Lannert lannert@lannert.rz.uni-duesseldorf.de
Ed Boraas ecxjo@esperanto.org
Ernst Molitor ernst.molitor@uni-bonn.de
Hendrik Buschkamp buschkamp@rheumanet.org
Ian McKellar imckellar@harvestroad.com.au
James Troup J.J.Troup@scm.brad.ac.uk
Jean-loup Gailly gzip@prep.ai.mit.edu
Jens Bachem bachem@rrz.uni-koeln.de
Jörg Schilling schilling@fokus.gmd.de
Marco d'Itri md@linux.it
Mark Adler madler@alumni.caltech.edu
Martin Schulte schulte@thp.uni-koeln.de

17
TODO
View File

@ -20,16 +20,16 @@
record, as it does not belong to the pubkey record?
* add an option to create a new user id.
Make it possible to chnage the signature class of the self-signatures,
which can then be used to chnage the displayed order of user-ids:
Make it possible to change the signature class of the self-signatures,
which can then be used to change the displayed order of user-ids:
Put the user-id with a self-signature of class 0x13 always on top
of the displayed list (needs changes in the user-id-from-keyid
functions).
* enhance --sign-key, so that multiple-user-ids can be signed
(use the new classes 0x14..17)
* support these multi-user-id-sigs in trustdb.
(use the new classes 0x14..17), partly implemented, but I think we
should better make use of notation data - for now we allow only one
user id.
* add an option to re-create a public key from a secret key. Think about
a backup system of only the secret part of the secret key.
@ -41,11 +41,10 @@
* change the misleading usage of public key certificate to public key data
or something like this.
* fix the problems with "\v" in gettext
* fix the problems with "\v" in gettext. Add nice formatting stuff to
argparse.c
* replace getkey.c#enum_secret_keys
* add readline support (but how can we allcoate it in secure memory?)
* add a testcase for --print-mds
* add readline support (Must enhance libreadline)

24
acconfig.h
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@ -63,7 +63,11 @@
#undef HAVE_U16_TYPEDEF
#undef HAVE_U32_TYPEDEF
/* One of the following macros is defined to select which of
* the cipher/rand-xxxx.c should be used */
#undef USE_RAND_DUMMY
#undef USE_RAND_UNIX
#undef USE_RAND_W32
/* defined if we have a /dev/random and /dev/urandom */
#undef HAVE_DEV_RANDOM
@ -74,23 +78,7 @@
#undef HAVE_RSA_CIPHER
@BOTTOM@
/* The AC_CHECK_SIZEOF() fails for some machines.
* we provide some fallback values here */
#if !SIZEOF_UNSIGNED_SHORT
#undef SIZEOF_UNSIGNED_SHORT
#define SIZEOF_UNSIGNED_SHORT 2
#endif
#if !SIZEOF_UNSIGNED_INT
#undef SIZEOF_UNSIGNED_INT
#define SIZEOF_UNSIGNED_INT 4
#endif
#if !SIZEOF_UNSIGNED_LONG
#undef SIZEOF_UNSIGNED_LONG
#define SIZEOF_UNSIGNED_LONG 4
#endif
#endif /*G10_CONFIG_H*/

2
checks/Makefile.am
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@ -1,6 +1,6 @@
## Process this file with automake to create Makefile.in
TESTS = version.test \
TESTS = version.test mds.test \
decrypt.test decrypt-dsa.test \
sigs.test sigs-dsa.test \
encrypt.test encrypt-dsa.test \

32
checks/mds.test Executable file
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@ -0,0 +1,32 @@
#!/bin/sh
. defs.inc || exit 3
test_one () {
if [ "$(grep $1 y | sed -e 's/.*=[ ]\(.*\)/\1/' -e 's/ //g')" != "$2" ]; then
failed="$failed $1"
fi
}
failed=""
#info Checking message digests
echo -n "" | ./run-gpgm --print-mds >y
test_one "MD5" "D41D8CD98F00B204E9800998ECF8427E"
test_one "SHA1" "DA39A3EE5E6B4B0D3255BFEF95601890AFD80709"
test_one "RMD160" "9C1185A5C5E9FC54612808977EE8F548B2258D31"
test_one "TIGER" "24F0130C63AC933216166E76B1BB925FF373DE2D49584E7A"
[ "$failed" != "" ] && error "$failed failed for empty string"
echo -n "abcdefghijklmnopqrstuvwxyz" | ./run-gpgm --print-mds >y
test_one "MD5" "C3FCD3D76192E4007DFB496CCA67E13B"
test_one "SHA1" "32D10C7B8CF96570CA04CE37F2A19D84240D3A89"
test_one "RMD160" "F71C27109C692C1B56BBDCEB5B9D2865B3708DBC"
test_one "TIGER" "307DE5EE72A414172A0355CCBF120404E9EE7BF32F60110B"
[ "$failed" != "" ] && error "$failed failed for a..z"
exit 0

9
cipher/ChangeLog
View File

@ -1,3 +1,12 @@
Fri May 8 18:07:44 1998 Werner Koch (wk@isil.d.shuttle.de)
* rand-internal.h, rand-unix.c, rand-w32.c, rand_dummy.c: New
* random.c: Moved system specific functions to rand-****.c
Fri May 8 14:01:17 1998 Werner Koch (wk@isil.d.shuttle.de)
* random.c (fast_random_poll): add call to gethrtime.
Tue May 5 21:28:55 1998 Werner Koch (wk@isil.d.shuttle.de)
* elgamal.c (elg_generate): choosing x was not correct, could

4
cipher/Makefile.am
View File

@ -18,6 +18,10 @@ libcipher_a_SOURCES = cipher.c \
primegen.c \
random.h \
random.c \
rand-internal.h \
rand-unix.c \
rand-w32.c \
rand-dummy.c \
rmd.h \
rmd160.c \
tiger.h \

12
cipher/Makefile.in
View File

@ -109,6 +109,10 @@ libcipher_a_SOURCES = cipher.c \
primegen.c \
random.h \
random.c \
rand-internal.h \
rand-unix.c \
rand-w32.c \
rand-dummy.c \
rmd.h \
rmd160.c \
tiger.h \
@ -135,8 +139,8 @@ CPPFLAGS = @CPPFLAGS@
LDFLAGS = @LDFLAGS@
LIBS = @LIBS@
libcipher_a_OBJECTS = cipher.o blowfish.o cast5.o elgamal.o md5.o \
primegen.o random.o rmd160.o tiger.o sha1.o dsa.o md.o misc.o \
smallprime.o
primegen.o random.o rand-unix.o rand-w32.o rand-dummy.o rmd160.o \
tiger.o sha1.o dsa.o md.o misc.o smallprime.o
AR = ar
CFLAGS = @CFLAGS@
COMPILE = $(CC) $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS)
@ -150,8 +154,8 @@ TAR = tar
GZIP = --best
DEP_FILES = .deps/blowfish.P .deps/cast5.P .deps/cipher.P .deps/dsa.P \
.deps/elgamal.P .deps/md.P .deps/md5.P .deps/misc.P .deps/primegen.P \
.deps/random.P .deps/rmd160.P .deps/sha1.P .deps/smallprime.P \
.deps/tiger.P
.deps/rand-dummy.P .deps/rand-unix.P .deps/rand-w32.P .deps/random.P \
.deps/rmd160.P .deps/sha1.P .deps/smallprime.P .deps/tiger.P
SOURCES = $(libcipher_a_SOURCES)
OBJECTS = $(libcipher_a_OBJECTS)

28
cipher/md.c
View File

@ -93,6 +93,8 @@ md_close(MD_HANDLE a)
{
if( !a )
return;
if( a->debug )
md_stop_debug(a);
m_free(a);
}
@ -255,3 +257,29 @@ md_asn_oid( int algo, size_t *asnlen, size_t *mdlen )
}
void
md_start_debug( MD_HANDLE md, const char *suffix )
{
static int index=0;
char buf[25];
if( md->debug ) {
log_debug("Oops: md debug already started\n");
return;
}
index++;
sprintf(buf, "dbgmd-%05d.%.10s", index, suffix );
md->debug = fopen(buf, "w");
if( !md->debug )
log_debug("md debug: can't open %s\n", buf );
}
void
md_stop_debug( MD_HANDLE md )
{
if( md->debug ) {
fclose(md->debug);
md->debug = NULL;
}
}

2
cipher/md.h
View File

@ -65,6 +65,8 @@ byte *md_read( MD_HANDLE a, int algo );
int md_get_algo( MD_HANDLE a );
int md_digest_length( int algo );
const byte *md_asn_oid( int algo, size_t *asnlen, size_t *mdlen );
void md_start_debug( MD_HANDLE a, const char *suffix );
void md_stop_debug( MD_HANDLE a );
#define md_is_secure(a) ((a)->secure)
#endif /*G10_MD_H*/

128
cipher/rand-dummy.c Normal file
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@ -0,0 +1,128 @@
/* rand-dummy.c - INSECURE dummy random device
* Copyright (C) 1998 Free Software Foundation, Inc.
*
* This file is part of GNUPG.
*
* 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 <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_GETHRTIME
#include <sys/times.h>
#endif
#ifndef HAVE_GETTIMEOFTIME
#include <sys/times.h>
#endif
#ifdef HAVE_GETRUSAGE
#include <sys/resource.h>
#endif
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include "util.h"
#include "ttyio.h"
#include "i18n.h"
#include "rand-internal.h"
#ifdef USE_RAND_DUMMY /* a dummy random file so we can do some tests */
#ifndef RAND_MAX /* for SunOS */
#define RAND_MAX 32767
#endif
#if __GNUC__
#warning Using the insecure dummy random device
#endif
void
random_poll()
{
char buf[POOLSIZE/5];
read_random_source( buf, POOLSIZE/5, 1 ); /* read dummy data */
add_randomness( buf, POOLSIZE/5, 2);
memset( buf, 0, POOLSIZE/5);
}
void
fast_random_poll()
{
#if HAVE_GETHRTIME
{ hrtime_t tv;
tv = gethrtime(void);
add_randomness( &tv, sizeof(tv), 1 );
}
#elif HAVE_GETTIMEOFTIME
{ struct timeval tv;
if( gettimeofday( &tv, NULL ) )
BUG();
add_randomness( &tv.tv_sec, sizeof(tv.tv_sec), 1 );
add_randomness( &tv.tv_usec, sizeof(tv.tv_usec), 1 );
}
#else /* use times */
{ struct tms buf;
times( &buf );
add_randomness( &buf, sizeof buf, 1 );
}
#endif
#ifdef HAVE_GETRUSAGE
{ struct rusage buf;
if( getrusage( RUSAGE_SELF, &buf ) )
BUG();
add_randomness( &buf, sizeof buf, 1 );
memset( &buf, 0, sizeof buf );
}
#endif
}
void
read_random_source( byte *buffer, size_t length, int level )
{
static int initialized=0;
if( !initialized ) {
log_info(_("warning: using insecure random number generator!!\n"));
tty_printf(_("The random number generator is only a kludge to let\n"
"it compile - it is in no way a strong RNG!\n\n"
"DON'T USE ANY DATA GENERATED BY THIS PROGRAM!!\n\n"));
initialized=1;
#ifdef HAVE_RAND
srand(make_timestamp()*getpid());
#else
srandom(make_timestamp()*getpid());
#endif
}
#ifdef HAVE_RAND
while( length-- )
*buffer++ = ((unsigned)(1 + (int) (256.0*rand()/(RAND_MAX+1.0)))-1);
#else
while( length-- )
*buffer++ = ((unsigned)(1 + (int) (256.0*random()/(RAND_MAX+1.0)))-1);
#endif
}
#endif /* USE_RAND_DUMMY */

53
cipher/rand-internal.h Normal file
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@ -0,0 +1,53 @@
/* rand-internal.h - header to glue the random functions
* Copyright (C) 1998 Free Software Foundation, Inc.
*
* This file is part of GNUPG.
*
* 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
*/
#ifndef G10_RAND_INTERNAL_H
#define G10_RAND_INTERNAL_H
/* For now we use the DUMMY random generator if we do not have
* the real random device */
#ifndef HAVE_DEV_RANDOM
#define USE_RAND_DUMMY 1
#undef USE_RAND_UNIX
#undef USE_RAND_W32
#endif
#include "random.h"
#define BLOCKLEN 64 /* hash this amount of bytes */
#define DIGESTLEN 20 /* into a digest of this length (rmd160) */
/* poolblocks is the number of digests which make up the pool
* and poolsize must be a multiple of the digest length
* to make the AND operations faster, the size should also be
* a multiple of ulong
*/
#define POOLBLOCKS 30
#define POOLSIZE (POOLBLOCKS*DIGESTLEN)
#if (POOLSIZE % SIZEOF_UNSIGNED_LONG)
#error Please make sure that poolsize is a multiple of ulong
#endif
#define POOLWORDS (POOLSIZE / SIZEOF_UNSIGNED_LONG)
void read_random_source( byte *buffer, size_t length, int level );
#endif /*G10_RAND_INTERNAL_H*/

203
cipher/rand-unix.c Normal file
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@ -0,0 +1,203 @@
/* rand-unix.c - raw random number generator for unix like OSes
* Copyright (C) 1998 Free Software Foundation, Inc.
*
* This file is part of GNUPG.
*
* 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 <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_GETHRTIME
#include <sys/times.h>
#endif
#ifndef HAVE_GETTIMEOFTIME
#include <sys/times.h>
#endif
#ifdef HAVE_GETRUSAGE
#include <sys/resource.h>
#endif
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include "util.h"
#include "rmd.h"
#include "ttyio.h"
#include "i18n.h"
#include "rand-internal.h"
#ifdef USE_RAND_UNIX /* This file is only for real systems */
void
random_poll()
{
char buf[POOLSIZE/5];
read_random_source( buf, POOLSIZE/5, 1 ); /* read /dev/urandom */
add_randomness( buf, POOLSIZE/5, 2);
memset( buf, 0, POOLSIZE/5);
}
void
fast_random_poll()
{
#if HAVE_GETHRTIME
{ hrtime_t tv;
tv = gethrtime(void);
add_randomness( &tv, sizeof(tv), 1 );
}
#elif HAVE_GETTIMEOFTIME
{ struct timeval tv;
if( gettimeofday( &tv, NULL ) )
BUG();
add_randomness( &tv.tv_sec, sizeof(tv.tv_sec), 1 );
add_randomness( &tv.tv_usec, sizeof(tv.tv_usec), 1 );
}
#else /* use times */
{ struct tms buf;
times( &buf );
add_randomness( &buf, sizeof buf, 1 );
}
#endif
#ifdef HAVE_GETRUSAGE
{ struct rusage buf;
if( getrusage( RUSAGE_SELF, &buf ) )
BUG();
add_randomness( &buf, sizeof buf, 1 );
memset( &buf, 0, sizeof buf );
}
#endif
}
#ifdef HAVE_DEV_RANDOM /* we have the /dev/random device */
/****************
* Used to open the Linux /dev/random device
*/
static int
open_device( const char *name, int minor )
{
int fd;
struct stat sb;
fd = open( name, O_RDONLY );
if( fd == -1 )
log_fatal("can't open %s: %s\n", name, strerror(errno) );
if( fstat( fd, &sb ) )
log_fatal("stat() off %s failed: %s\n", name, strerror(errno) );
#if defined(__sparc__) && defined(__linux__)
#warning something is wrong with UltraPenguin /dev/random
#else
if( !S_ISCHR(sb.st_mode) )
log_fatal("invalid random device!\n" );
#endif
return fd;
}
void
read_random_source( byte *buffer, size_t length, int level )
{
static int fd_urandom = -1;
static int fd_random = -1;
int fd;
int n;
int warn=0;
if( level == 2 ) {
if( fd_random == -1 )
fd_random = open_device( "/dev/random", 8 );
fd = fd_random;
}
else {
/* fixme: we should use a simpler one for level 0,
* because reading from /dev/urandom removes entropy
* and the next read on /dev/random may have to wait */
if( fd_urandom == -1 )
fd_urandom = open_device( "/dev/urandom", 9 );
fd = fd_urandom;
}
do {
fd_set rfds;
struct timeval tv;
int rc;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
tv.tv_sec = 3;
tv.tv_usec = 0;
if( !(rc=select(fd+1, &rfds, NULL, NULL, &tv)) ) {
if( !warn )
tty_printf( _(
"\n"
"Not enough random bytes available. Please do some other work to give\n"
"the OS a chance to collect more entropy! (Need %d more bytes)\n"), length );
warn = 1;
continue;
}
else if( rc == -1 ) {
tty_printf("select() error: %s\n", strerror(errno));
continue;
}
assert( length < 500 );
do {
n = read(fd, buffer, length );
if( n >= 0 && n > length ) {
log_error("bogus read from random device (n=%d)\n", n );
n = length;
}
} while( n == -1 && errno == EINTR );
if( n == -1 )
log_fatal("read error on random device: %s\n", strerror(errno) );
assert( n <= length );
buffer += n;
length -= n;
} while( length );
}
#else /* not HAVE_DEV_RANDOM */
/****************
* The real random data collector for Unix.
* this function runs in a loop, waiting for commands from ctrl_fd
* and normally starts a collection process, which outputs random
* bytes to out_fd.
*
* Commands understand from ctrl_fd are single character:
* 'Q' = Quit the loop
* 'S' = Start a new collection process
*/
static void
collector( FILE *ctrlfp, FILE *outfp )
{
}
#endif /* no HAVE_DEV_RANDOM */
#endif /* USE_RAND_UNIX */

54
cipher/rand-w32.c Normal file
View File

@ -0,0 +1,54 @@
/* rand-w32.c - Windoze32 and NT random device
* Copyright (C) 1998 Free Software Foundation, Inc.
*
* This file is part of GNUPG.
*
* 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 <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include "util.h"
#include "rmd.h"
#include "ttyio.h"
#include "i18n.h"
#include "rand-internal.h"
#ifdef USE_RAND_W32 /* this file is only for Mingw32 */
#error To be written
void
random_poll()
{
}
void
fast_random_poll()
{
}
#endif /* USE_RAND_W32 */

210
cipher/random.c
View File

@ -20,12 +20,9 @@
/****************
* How it works:
*
* See Peter Gutmann's Paper: "Software Generation of Practically
* Strong Random Numbers"
*
* fixme!
* This random number generator is modelled after the one described
* in Peter Gutmann's Paper: "Software Generation of Practically
* Strong Random Numbers".
*/
@ -34,38 +31,14 @@
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifndef HAVE_GETTIMEOFTIME
#include <sys/times.h>
#endif
#ifdef HAVE_GETRUSAGE
#include <sys/resource.h>
#endif
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include "util.h"
#include "random.h"
#include "rmd.h"
#include "ttyio.h"
#include "i18n.h"
#include "rand-internal.h"
#define BLOCKLEN 64 /* hash this amount of bytes */
#define DIGESTLEN 20 /* into a digest of this length (rmd160) */
/* poolblocks is the number of digests which make up the pool
* and poolsize must be a multiple of the digest length
* to make the AND operations faster, the size should also be
* a multiple of ulong
*/
#define POOLBLOCKS 30
#define POOLSIZE (POOLBLOCKS*DIGESTLEN)
#if (POOLSIZE % SIZEOF_UNSIGNED_LONG)
#error Please make sure that poolsize is a multiple of ulong
#endif
#define POOLWORDS (POOLSIZE / SIZEOF_UNSIGNED_LONG)
#if SIZEOF_UNSIGNED_LONG == 8
#define ADD_VALUE 0xa5a5a5a5a5a5a5a5
#elif SIZEOF_UNSIGNED_LONG == 4
@ -96,9 +69,7 @@ static int secure_alloc;
static int quick_test;
static void read_pool( byte *buffer, size_t length, int level );
static void read_dev_random( byte *buffer, size_t length, int level );
static void
@ -120,13 +91,14 @@ secure_random_alloc()
secure_alloc = 1;
}
int
quick_random_gen( int onoff )
{
int last = quick_test;
if( onoff != -1 )
quick_test = onoff;
#ifndef HAVE_DEV_RANDOM
#ifdef USE_RAND_DUMMY
last = 1; /* insecure RNG */
#endif
return last;
@ -240,7 +212,7 @@ read_pool( byte *buffer, size_t length, int level )
if( length >= POOLSIZE )
BUG(); /* not allowed */
if( !level ) { /* read simple random bytes */
read_dev_random( buffer, length, level );
read_random_source( buffer, length, level );
return;
}
@ -255,7 +227,7 @@ read_pool( byte *buffer, size_t length, int level )
if( needed > POOLSIZE )
BUG();
p = m_alloc_secure( needed );
read_dev_random( p, needed, 2 ); /* read /dev/random */
read_random_source( p, needed, 2 ); /* read /dev/random */
add_randomness( p, needed, 3);
m_free(p);
pool_balance += needed;
@ -306,7 +278,8 @@ add_randomness( const void *buffer, size_t length, int source )
while( length-- ) {
rndpool[pool_writepos++] = *((byte*)buffer)++;
if( pool_writepos >= POOLSIZE ) {
pool_filled = 1;
if( source > 1 )
pool_filled = 1;
pool_writepos = 0;
mix_pool(rndpool);
just_mixed = !length;
@ -316,166 +289,3 @@ add_randomness( const void *buffer, size_t length, int source )
/********************
* FIXME: move these functions to rand_unix.c
*/
void
random_poll()
{
char buf[POOLSIZE/5];
read_dev_random( buf, POOLSIZE/5, 1 ); /* read /dev/urandom */
add_randomness( buf, POOLSIZE/5, 2);
memset( buf, 0, POOLSIZE/5);
}
void
fast_random_poll()
{
#ifdef HAVE_GETTIMEOFTIME
{ struct timeval tv;
if( gettimeofday( &tv, NULL ) )
BUG();
add_randomness( &tv.tv_sec, sizeof(tv.tv_sec), 1 );
add_randomness( &tv.tv_usec, sizeof(tv.tv_usec), 1 );
}
#else /* use times */
{ struct tms buf;
times( &buf );
add_randomness( &buf, sizeof buf, 1 );
}
#endif
#ifdef HAVE_GETRUSAGE
{ struct rusage buf;
if( getrusage( RUSAGE_SELF, &buf ) )
BUG();
add_randomness( &buf, sizeof buf, 1 );
memset( &buf, 0, sizeof buf );
}
#endif
}
#ifdef HAVE_DEV_RANDOM
static int
open_device( const char *name, int minor )
{
int fd;
struct stat sb;
fd = open( name, O_RDONLY );
if( fd == -1 )
log_fatal("can't open %s: %s\n", name, strerror(errno) );
if( fstat( fd, &sb ) )
log_fatal("stat() off %s failed: %s\n", name, strerror(errno) );
#if defined(__sparc__) && defined(__linux__)
#warning something is wrong with UltraPenguin /dev/random
#else
if( !S_ISCHR(sb.st_mode) )
log_fatal("invalid random device!\n" );
#endif
return fd;
}
static void
read_dev_random( byte *buffer, size_t length, int level )
{
static int fd_urandom = -1;
static int fd_random = -1;
int fd;
int n;
int warn=0;
if( level == 2 && !quick_test ) {
if( fd_random == -1 )
fd_random = open_device( "/dev/random", 8 );
fd = fd_random;
}
else {
/* fixme: we should use a simpler one for level 0,
* because reading from /dev/urandom removes entropy
* and the next read on /dev/random may have to wait */
if( fd_urandom == -1 )
fd_urandom = open_device( "/dev/urandom", 9 );
fd = fd_urandom;
}
do {
fd_set rfds;
struct timeval tv;
int rc;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
tv.tv_sec = 3;
tv.tv_usec = 0;
if( !(rc=select(fd+1, &rfds, NULL, NULL, &tv)) ) {
if( !warn )
tty_printf( _(
"\n"
"Not enough random bytes available. Please do some other work to give\n"
"the OS a chance to collect more entropy! (Need %d more bytes)\n"), length );
warn = 1;
continue;
}
else if( rc == -1 ) {
tty_printf("select() error: %s\n", strerror(errno));
continue;
}
assert( length < 500 );
do {
n = read(fd, buffer, length );
if( n >= 0 && n > length ) {
log_error("bogus read from random device (n=%d)\n", n );
n = length;
}
} while( n == -1 && errno == EINTR );
if( n == -1 )
log_fatal("read error on random device: %s\n", strerror(errno) );
assert( n <= length );
buffer += n;
length -= n;
} while( length );
}
#else /* not HAVE_DEV_RANDOM */
#ifndef RAND_MAX /* for SunOS */
#define RAND_MAX 32767
#endif
static void
read_dev_random( byte *buffer, size_t length, int level )
{
static int initialized=0;
if( !initialized ) {
log_info(_("warning: using insecure random number generator!!\n"));
tty_printf(_("The random number generator is only a kludge to let\n"
"it compile - it is in no way a strong RNG!\n\n"
"DON'T USE ANY DATA GENERATED BY THIS PROGRAM!!\n\n"));
initialized=1;
#ifdef HAVE_RAND
srand(make_timestamp()*getpid());
#else
srandom(make_timestamp()*getpid());
#endif
}
#ifdef HAVE_RAND
while( length-- )
*buffer++ = ((unsigned)(1 + (int) (256.0*rand()/(RAND_MAX+1.0)))-1);
#else
while( length-- )
*buffer++ = ((unsigned)(1 + (int) (256.0*random()/(RAND_MAX+1.0)))-1);
#endif
}
#endif

2
cipher/random.h
View File

@ -32,7 +32,7 @@ void add_randomness( const void *buffer, size_t length, int source );
/*-- the next two functions are implemented by all the system
specific source files rand_xxxx.s --*/
specific source files rand-xxxx.c --*/
void random_poll(void);
void fast_random_poll(void);

28
config.h.in
View File

@ -112,6 +112,11 @@
#undef HAVE_U16_TYPEDEF
#undef HAVE_U32_TYPEDEF
/* One of the following macros is defined to select which of
* the cipher/rand-xxxx.c should be used */
#undef USE_RAND_DUMMY
#undef USE_RAND_UNIX
#undef USE_RAND_W32
/* defined if we have a /dev/random and /dev/urandom */
#undef HAVE_DEV_RANDOM
@ -145,6 +150,9 @@
/* Define if you have the getcwd function. */
#undef HAVE_GETCWD
/* Define if you have the gethrtime function. */
#undef HAVE_GETHRTIME
/* Define if you have the getpagesize function. */
#undef HAVE_GETPAGESIZE
@ -154,6 +162,9 @@
/* Define if you have the gettimeofday function. */
#undef HAVE_GETTIMEOFDAY
/* Define if you have the memmove function. */
#undef HAVE_MEMMOVE
/* Define if you have the mlock function. */
#undef HAVE_MLOCK
@ -229,21 +240,4 @@
/* Define if you have the i library (-li). */
#undef HAVE_LIBI
/* The AC_CHECK_SIZEOF() fails for some machines.
* we provide some fallback values here */
#if !SIZEOF_UNSIGNED_SHORT
#undef SIZEOF_UNSIGNED_SHORT
#define SIZEOF_UNSIGNED_SHORT 2
#endif
#if !SIZEOF_UNSIGNED_INT
#undef SIZEOF_UNSIGNED_INT
#define SIZEOF_UNSIGNED_INT 4
#endif
#if !SIZEOF_UNSIGNED_LONG
#undef SIZEOF_UNSIGNED_LONG
#define SIZEOF_UNSIGNED_LONG 4
#endif
#endif /*G10_CONFIG_H*/

34
configure.in
View File

@ -27,9 +27,13 @@ AC_SUBST(PACKAGE)
AC_DEFINE_UNQUOTED(VERSION, "$VERSION")
AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE")
AC_ARG_ENABLE(dev-random,
[ --disable-dev-random disable the use of dev random],
try_dev_random=$enableval, try_dev_random=yes)
AC_MSG_CHECKING([whether memory debugging is requested])
AC_ARG_ENABLE(m-debug,
[ --enable-m-debug enable debugging of memory allocation],
[ --enable-m-debug enable debugging of memory allocation],
use_m_debug=$enableval, use_m_debug=no)
AC_MSG_RESULT($use_m_debug)
if test "$use_m_debug" = yes; then
@ -81,16 +85,28 @@ case "${target}" in
CPP="i386--mingw32-gcc -E"
RANLIB="i386--mingw32-ranlib"
ac_cv_have_dev_random=no
PRINTABLE_OS_NAME="MingW32"
AC_DEFINE(USE_RAND_W32)
;;
*)
AC_PROG_RANLIB
AC_PROG_INSTALL
AC_PROG_CC
AC_PROG_CPP
PRINTABLE_OS_NAME=`uname -s || echo "Unknown"`
AC_DEFINE(USE_RAND_UNIX)
;;
esac
case "${target}" in
i386--mingw32)
PRINTABLE_OS_NAME="MingW32"
;;
*-linux*)
PRINTABLE_OS_NAME="GNU/Linux"
;;
*)
PRINTABLE_OS_NAME=`uname -s || echo "Unknown"`
;;
esac
AC_DEFINE_UNQUOTED(PRINTABLE_OS_NAME, "$PRINTABLE_OS_NAME")
dnl Checks for libraries.
@ -132,18 +148,24 @@ fi
dnl Checks for library functions.
AC_FUNC_VPRINTF
AC_CHECK_FUNCS(strerror stpcpy strlwr tcgetattr rand strtoul mlock mmap)
AC_CHECK_FUNCS(gettimeofday getrusage)
AC_CHECK_FUNCS(memmove gettimeofday getrusage gethrtime)
dnl check whether we have a random device
if test "$try_dev_random" = yes ; then
AC_CACHE_CHECK(for random device, ac_cv_have_dev_random,
[if test -c /dev/random && test -c /dev/urandom ; then
ac_cv_have_dev_random=yes; else ac_cv_have_dev_random=no; fi])
if test "$ac_cv_have_dev_random" = yes; then
AC_DEFINE(HAVE_DEV_RANDOM)
fi
else
AC_MSG_CHECKING(for random device)
ac_cv_have_dev_random=no
AC_MSG_RESULT(has been disabled)
fi
dnl setup assembler stuff

26
g10/ChangeLog
View File

@ -1,3 +1,29 @@
Wed May 13 11:48:27 1998 Werner Koch (wk@isil.d.shuttle.de)
* build-packet.c (do_signature): Support for v4 pakets.
* keyedit.c (make_keysig_packet): Ditto.
* build-packet.c (build_sig_subpkt_from_sig): New.
(build_sig_subpkt): New.
* elg.c (g10_elg_sign): removed keyid_from_skc.
* dsa.c (g10_dsa_sign): Ditto.
* rsa.c (g10_rsa_sign): Ditto.
* keyedit.c (make_keysig_packet): Add call to keyid_from_skc
* sign.c (clearsign_file): Support for v4 signatures.
(sign_file): Ditto.
Wed May 6 09:31:24 1998 Werner Koch (wk@isil.d.shuttle.de)
* parse-packet.c (do_parse): add support for 5 byte length leader.
(parse_subpkt): Ditto.
* build-packet.c (write_new_header): Ditto.
* packet.h (SIGSUBPKT_): New constants.
* parse-packet.c (parse_sig_subpkt): Changed name, made global,
and arg to return packet length, chnaged all callers
Tue May 5 22:11:59 1998 Werner Koch (wk@isil.d.shuttle.de)
* keygen.c (gen_dsa): New.

201
g10/build-packet.c
View File

@ -225,11 +225,11 @@ hash_public_cert( MD_HANDLE md, PKT_public_cert *pkc )
int rc = 0;
int c;
IOBUF a = iobuf_temp();
#if 0
#if 1
FILE *fp = fopen("dump.pkc", "a");
int i=0;
fprintf(fp, "\nHashing PKC:\n");
fprintf(fp, "\nHashing PKC (v%d):\n", pkc->version);
#endif
/* build the packet */
@ -239,7 +239,7 @@ hash_public_cert( MD_HANDLE md, PKT_public_cert *pkc )
if( (rc = build_packet( a, &pkt )) )
log_fatal("build public_cert for hashing failed: %s\n", g10_errstr(rc));
while( (c=iobuf_get(a)) != -1 ) {
#if 0
#if 1
fprintf( fp," %02x", c );
if( (++i == 24) ) {
putc('\n', fp);
@ -248,7 +248,7 @@ hash_public_cert( MD_HANDLE md, PKT_public_cert *pkc )
#endif
md_putc( md, c );
}
#if 0
#if 1
putc('\n', fp);
fclose(fp);
#endif
@ -480,6 +480,169 @@ do_compressed( IOBUF out, int ctb, PKT_compressed *cd )
}
/****************
* Find a subpacket of type REQTYPE in BUFFER and a return a pointer
* to the first byte of that subpacket data.
* And return the length of the packet in RET_N and the number of
* header bytes in RET_HLEN (length header and type byte).
*/
byte *
find_subpkt( byte *buffer, sigsubpkttype_t reqtype,
size_t *ret_hlen, size_t *ret_n )
{
int buflen;
sigsubpkttype_t type;
byte *bufstart;
size_t n;
if( !buffer )
return NULL;
buflen = (*buffer << 8) | buffer[1];
buffer += 2;
for(;;) {
if( !buflen )
return NULL; /* end of packets; not found */
bufstart = buffer;
n = *buffer++; buflen--;
if( n == 255 ) {
if( buflen < 4 )
break;
n = (buffer[0] << 24) | (buffer[1] << 16)
| (buffer[2] << 8) | buffer[3];
buffer += 4;
buflen -= 4;
}
else if( n >= 192 ) {
if( buflen < 2 )
break;
n = (( n - 192 ) << 8) + *buffer + 192;
buflen--;
}
if( buflen < n )
break;
type = *buffer & 0x7f;
if( type == reqtype ) {
buffer++;
n--;
if( n > buflen )
break;
if( ret_hlen )
*ret_hlen = buffer - bufstart;
if( ret_n )
*ret_n = n;
return buffer;
}
buffer += n; buflen -=n;
}
log_error("find_subpkt: buffer shorter than subpacket\n");
return NULL;
}
/****************
* Create or update a signature subpacket for SIG of TYPE.
* This functions know, where to put the data (hashed or unhashed).
* The function may move data from the unhased part to the hashed one.
* Note: All pointers into sig->[un]hashed are not valid after a call
* to this function. The data to but into the subpaket should be
* in buffer with a length of buflen.
*/
void
build_sig_subpkt( PKT_signature *sig, sigsubpkttype_t type,
const byte *buffer, size_t buflen )
{
byte *data;
size_t hlen, dlen;
int found, hashed, realloced;
size_t n, n0;
if( (data = find_subpkt( sig->hashed_data, type, &hlen, &dlen )) )
found = 1;
else if( (data = find_subpkt( sig->unhashed_data, type, &hlen, &dlen )))
found = 2;
else
found = 0;
if( found )
log_bug("build_sig_packet: update nyi\n");
if( buflen+1 >= 192 )
log_bug("build_sig_packet: long subpackets are nyi\n");
switch( type ) {
case SIGSUBPKT_SIG_CREATED:
hashed = 1; break;
default: hashed = 0; break;
}
if( hashed ) {
n0 = sig->hashed_data ? ((*sig->hashed_data << 8)
| sig->hashed_data[1]) : 0;
n = n0 + 1 + 1 + buflen; /* length, type, buffer */
realloced = !!sig->hashed_data;
data = sig->hashed_data ? m_realloc( sig->hashed_data, n+2 )
: m_alloc( n+2 );
}
else {
n0 = sig->unhashed_data ? ((*sig->unhashed_data << 8)
| sig->unhashed_data[1]) : 0;
n = n0 + 1 + 1 + buflen; /* length, type, buffer */
realloced = !!sig->unhashed_data;
data = sig->unhashed_data ? m_realloc( sig->unhashed_data, n+2 )
: m_alloc( n+2 );
}
data[n0+0] = (n >> 8) & 0xff;
data[n0+1] = n & 0xff;
data[n0+2] = buflen+1;
data[n0+3] = type;
memcpy(data+n0+4, buffer, buflen );
if( hashed ) {
if( !realloced )
m_free(sig->hashed_data);
sig->hashed_data = data;
}
else {
if( !realloced )
m_free(sig->unhashed_data);
sig->unhashed_data = data;
}
}
/****************
* Put all the required stuff from SIG into subpackets of sig.
*/
void
build_sig_subpkt_from_sig( PKT_signature *sig )
{
u32 u;
byte buf[8];
u = sig->keyid[0];
buf[0] = (u >> 24) & 0xff;
buf[1] = (u >> 16) & 0xff;
buf[2] = (u >> 8) & 0xff;
buf[3] = u & 0xff;
u = sig->keyid[1];
buf[4] = (u >> 24) & 0xff;
buf[5] = (u >> 16) & 0xff;
buf[6] = (u >> 8) & 0xff;
buf[7] = u & 0xff;
build_sig_subpkt( sig, SIGSUBPKT_ISSUER, buf, 8 );
u = sig->timestamp;
buf[0] = (u >> 24) & 0xff;
buf[1] = (u >> 16) & 0xff;
buf[2] = (u >> 8) & 0xff;
buf[3] = u & 0xff;
build_sig_subpkt( sig, SIGSUBPKT_SIG_CREATED, buf, 4 );
}
static int
do_signature( IOBUF out, int ctb, PKT_signature *sig )
{
@ -501,8 +664,20 @@ do_signature( IOBUF out, int ctb, PKT_signature *sig )
iobuf_put(a, sig->pubkey_algo );
iobuf_put(a, sig->digest_algo );
if( sig->version >= 4 ) {
/* fixme: write v4 subpackets here */
log_error("WARNING: note writing of v4 subpackets is not implemented\n");
size_t n;
/* timestamp and keyid must have been packed into the
* subpackets prior to the call of this function, because
* these subpackets are hashed */
n = sig->hashed_data?((sig->hashed_data[0]<<8)
|sig->hashed_data[1]) :0;
write_16(a, n);
if( n )
iobuf_write( a, sig->hashed_data+2, n );
n = sig->unhashed_data?((sig->unhashed_data[0]<<8)
|sig->unhashed_data[1]) :0;
write_16(a, n);
if( n )
iobuf_write( a, sig->unhashed_data+2, n );
}
iobuf_put(a, sig->digest_start[0] );
iobuf_put(a, sig->digest_start[1] );
@ -674,8 +849,18 @@ write_new_header( IOBUF out, int ctb, u32 len, int hdrlen )
if( iobuf_put( out, (len % 256) ) )
return -1;
}
else
log_bug("need a partial header to code a length %lu\n", (ulong)len);
else {
if( iobuf_put( out, 0xff ) )
return -1;
if( iobuf_put( out, (len >> 24)&0xff ) )
return -1;
if( iobuf_put( out, (len >> 16)&0xff ) )
return -1;
if( iobuf_put( out, (len >> 8)&0xff ) )
return -1;
if( iobuf_put( out, len & 0xff ) )
return -1;
}
}
return 0;
}

1
g10/dsa.c
View File

@ -47,7 +47,6 @@ g10_dsa_sign( PKT_secret_cert *skc, PKT_signature *sig,
digest_algo = md_get_algo(md);
dp = md_read( md, digest_algo );
keyid_from_skc( skc, sig->keyid );
sig->digest_algo = digest_algo;
sig->digest_start[0] = dp[0];
sig->digest_start[1] = dp[1];

1
g10/elg.c
View File

@ -73,7 +73,6 @@ g10_elg_sign( PKT_secret_cert *skc, PKT_signature *sig,
digest_algo = md_get_algo(md);
dp = md_read( md, digest_algo );
keyid_from_skc( skc, sig->keyid );
sig->digest_algo = digest_algo;
sig->digest_start[0] = dp[0];
sig->digest_start[1] = dp[1];

1
g10/gpgd.c
View File

@ -25,6 +25,7 @@
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "util.h"

62
g10/keyedit.c
View File

@ -191,8 +191,10 @@ remove_keysigs( KBNODE keyblock, u32 *keyid, int all )
else if( node->flag & 4 )
tty_printf("The signature could not be checked!\n");
if( keyid[0] == sig->keyid[0] && keyid[1] == sig->keyid[1] )
if( keyid[0] == sig->keyid[0] && keyid[1] == sig->keyid[1] ) {
tty_printf("Skipped self-signature\n");
continue; /* do not remove self-signatures */
}
answer = tty_get("\nRemove this signature? ");
tty_kill_prompt();
@ -348,8 +350,7 @@ sign_key( const char *username, STRLIST locusr )
rc = make_keysig_packet( &sig, pkc,
node->pkt->pkt.user_id,
skc_rover->skc,
0x10,
DIGEST_ALGO_RMD160 );
0x10, 0 );
if( rc ) {
log_error("make_keysig_packet failed: %s\n", g10_errstr(rc));
goto leave;
@ -684,6 +685,7 @@ change_passphrase( const char *username )
* Create a signature packet for the given public key certificate
* and the user id and return it in ret_sig. User signature class SIGCLASS
* user-id is not used (and may be NULL if sigclass is 0x20)
* If digest_algo is 0 the function selects an appropriate one.
*/
int
make_keysig_packet( PKT_signature **ret_sig, PKT_public_cert *pkc,
@ -695,25 +697,75 @@ make_keysig_packet( PKT_signature **ret_sig, PKT_public_cert *pkc,
MD_HANDLE md;
assert( (sigclass >= 0x10 && sigclass <= 0x13) || sigclass == 0x20 );
if( !digest_algo ) {
switch( skc->pubkey_algo ) {
case PUBKEY_ALGO_DSA: digest_algo = DIGEST_ALGO_SHA1; break;
case PUBKEY_ALGO_RSA_S:
case PUBKEY_ALGO_RSA: digest_algo = DIGEST_ALGO_MD5; break;
default: digest_algo = DIGEST_ALGO_RMD160; break;
}
}
md = md_open( digest_algo, 0 );
md_start_debug( md, "make" );
/* hash the public key certificate and the user id */
hash_public_cert( md, pkc );
if( sigclass != 0x20 )
if( sigclass != 0x20 ) {
if( skc->version >=4 ) {
byte buf[5];
buf[0] = 0xb4; /* indicates a userid packet */
buf[1] = uid->len >> 24; /* always use 4 length bytes */
buf[2] = uid->len >> 16;
buf[3] = uid->len >> 8;
buf[4] = uid->len;
md_write( md, buf, 5 );
}
md_write( md, uid->name, uid->len );
}
/* and make the signature packet */
sig = m_alloc_clear( sizeof *sig );
sig->version = skc->version;
keyid_from_skc( skc, sig->keyid );
sig->pubkey_algo = skc->pubkey_algo;
sig->digest_algo = digest_algo;
sig->timestamp = make_timestamp();
sig->sig_class = sigclass;
if( sig->version >= 4 ) {
build_sig_subpkt_from_sig( sig );
md_putc( md, sig->version );
}
md_putc( md, sig->sig_class );
{ u32 a = sig->timestamp;
if( sig->version < 4 ) {
u32 a = sig->timestamp;
md_putc( md, (a >> 24) & 0xff );
md_putc( md, (a >> 16) & 0xff );
md_putc( md, (a >> 8) & 0xff );
md_putc( md, a & 0xff );
}
else {
byte buf[6];
size_t n;
md_putc( md, sig->pubkey_algo );
md_putc( md, sig->digest_algo );
if( sig->hashed_data ) {
n = (sig->hashed_data[0] << 8) | sig->hashed_data[1];
md_write( md, sig->hashed_data, n+2 );
n += 6;
}
else
n = 6;
/* add some magic */
buf[0] = sig->version;
buf[1] = 0xff;
buf[2] = n >> 24; /* hmmm, n is only 16 bit, so tthis is always 0 */
buf[3] = n >> 16;
buf[4] = n >> 8;
buf[5] = n;
md_write( md, buf, 6 );
}
md_final(md);
rc = complete_sig( sig, skc, md );

4
g10/keygen.c
View File

@ -79,7 +79,7 @@ write_selfsig( KBNODE root, KBNODE pub_root, PKT_secret_cert *skc )
pkc = node->pkt->pkt.public_cert;
/* and make the signature */
rc = make_keysig_packet( &sig, pkc, uid, skc, 0x13, DIGEST_ALGO_RMD160 );
rc = make_keysig_packet( &sig, pkc, uid, skc, 0x13, 0 );
if( rc ) {
log_error("make_keysig_packet failed: %s\n", g10_errstr(rc) );
return rc;
@ -290,7 +290,7 @@ gen_dsa(unsigned nbits, KBNODE pub_root, KBNODE sec_root, DEK *dek,
/* don't know whether it makes sense to have the factors, so for now
* we store them in the secret keyring (but they are not secret)
* p = 2 * q * f1 * f2 * ... * fn
* We store only f1 to f_n-1 - fn can be calculated because p and q
* We store only f1 to f_n-1; fn can be calculated because p and q
* are known.
*/
pkt = m_alloc_clear(sizeof *pkt);

31
g10/packet.h
View File

@ -211,6 +211,33 @@ struct packet_struct {
(a)->pkt.generic = NULL; \
} while(0)
typedef enum {
SIGSUBPKT_LIST_UNHASHED=-2,
SIGSUBPKT_LIST_HASHED =-1,
SIGSUBPKT_NONE = 0,
SIGSUBPKT_SIG_CREATED = 2, /* signature creation time */
SIGSUBPKT_SIG_EXPIRE = 3, /* signature expiration time */
SIGSUBPKT_EXPORTABLE = 4, /* exportable */
SIGSUBPKT_TRUST = 5, /* trust signature */
SIGSUBPKT_REGEXP = 6, /* regular expression */
SIGSUBPKT_REVOCABLE = 7, /* revocable */
SIGSUBPKT_KEY_EXPIRE = 9, /* key expiration time */
SIGSUBPKT_ARR =10, /* additional recipient request */
SIGSUBPKT_PREF_SYM =11, /* preferred symmetric algorithms */
SIGSUBPKT_REV_KEY =12, /* revocation key */
SIGSUBPKT_ISSUER =16, /* issuer key ID */
SIGSUBPKT_NOTATION =20, /* notation data */
SIGSUBPKT_PREF_HASH =21, /* preferred hash algorithms */
SIGSUBPKT_PREF_COMPR =22, /* preferred compression algorithms */
SIGSUBPKT_KS_FLAGS =23, /* key server preferences */
SIGSUBPKT_PREF_KS =24, /* preferred key server */
SIGSUBPKT_PRIMARY_UID =25, /* primary user id */
SIGSUBPKT_POLICY =26, /* policy URL */
SIGSUBPKT_KEY_FLAGS =27, /* key flags */
SIGSUBPKT_SIGNERS_UID =28 /* signer's user id */
} sigsubpkttype_t;
/*-- mainproc.c --*/
int proc_packets( IOBUF a );
int proc_signature_packets( IOBUF a, STRLIST signedfiles );
@ -224,11 +251,15 @@ int parse_packet( IOBUF inp, PACKET *ret_pkt);
int copy_all_packets( IOBUF inp, IOBUF out );
int copy_some_packets( IOBUF inp, IOBUF out, ulong stopoff );
int skip_some_packets( IOBUF inp, unsigned n );
const byte *parse_sig_subpkt( const byte *buffer, int reqtype, size_t *ret_n );
/*-- build-packet.c --*/
int build_packet( IOBUF inp, PACKET *pkt );
u32 calc_packet_length( PACKET *pkt );
void hash_public_cert( MD_HANDLE md, PKT_public_cert *pkc );
void build_sig_subpkt( PKT_signature *sig, sigsubpkttype_t type,
const byte *buffer, size_t buflen );
void build_sig_subpkt_from_sig( PKT_signature *sig );
/*-- free-packet.c --*/
void free_symkey_enc( PKT_symkey_enc *enc );

103
g10/parse-packet.c
View File

@ -197,7 +197,7 @@ parse( IOBUF inp, PACKET *pkt, int reqtype, ulong *retpos,
{
int rc, c, ctb, pkttype, lenbytes;
unsigned long pktlen;
byte hdr[5];
byte hdr[8];
int hdrlen;
int pgp3 = 0;
@ -233,8 +233,17 @@ parse( IOBUF inp, PACKET *pkt, int reqtype, ulong *retpos,
hdr[hdrlen++] = c;
pktlen += c + 192;
}
else if( c < 255 ) {
pktlen = (hdr[hdrlen++] = iobuf_get_noeof(inp)) << 24;
pktlen |= (hdr[hdrlen++] = iobuf_get_noeof(inp)) << 16;
pktlen |= (hdr[hdrlen++] = iobuf_get_noeof(inp)) << 8;
if( (c = iobuf_get(inp)) == -1 ) {
log_error("%s: 4 byte length invalid\n", iobuf_where(inp) );
return G10ERR_INVALID_PACKET;
}
pktlen |= (hdr[hdrlen++] = c );
}
else { /* partial body length */
pktlen = 1 << (c & 0x1f);
log_debug("partial body length of %lu bytes\n", pktlen );
iobuf_set_partial_block_mode(inp, pktlen);
pktlen = 0;/* to indicate partial length */
@ -543,20 +552,32 @@ parse_pubkeyenc( IOBUF inp, int pkttype, unsigned long pktlen, PACKET *packet )
}
static const byte *
parse_subpkt( const byte *buffer, int reqtype )
const byte *
parse_sig_subpkt( const byte *buffer, sigsubpkttype_t reqtype, size_t *ret_n )
{
int buflen = (*buffer << 8) | buffer[1];
int buflen;
int type;
int critical;
size_t n;
if( !buffer )
return NULL;
buflen = (*buffer << 8) | buffer[1];
buffer += 2;
for(;;) {
if( !buflen )
return NULL; /* end of packets; not found */
n = *buffer++; buflen--;
if( n >= 192 ) {
if( n == 255 ) {
if( buflen < 4 )
goto too_short;
n = (buffer[0] << 24) | (buffer[1] << 16)
| (buffer[2] << 8) | buffer[3];
buffer += 4;
buflen -= 4;
}
else if( n >= 192 ) {
if( buflen < 2 )
goto too_short;
n = (( n - 192 ) << 8) + *buffer + 192;
@ -573,27 +594,27 @@ parse_subpkt( const byte *buffer, int reqtype )
critical = 0;
if( reqtype < 0 ) { /* list packets */
printf("\t%ssubpacket %d of length %u (%s)\n",
reqtype == -1 ? "hashed ":"", type, (unsigned)n,
type == 2 ? "signature creation time"
: type == 3 ? "signature expiration time"
: type == 4 ? "exportable"
: type == 5 ? "trust signature"
: type == 6 ? "regular expression"
: type == 7 ? "revocable"
: type == 9 ? "key expiration time"
: type ==10 ? "additional recipient request"
: type ==11 ? "preferred symmetric algorithms"
: type ==12 ? "revocation key"
: type ==16 ? "issuer key ID"
: type ==20 ? "notation data"
: type ==21 ? "preferred hash algorithms"
: type ==22 ? "preferred compression algorithms"
: type ==23 ? "key server preferences"
: type ==24 ? "preferred key server"
: type ==25 ? "primary user id"
: type ==26 ? "policy URL"
: type ==27 ? "key flags"
: type ==28 ? "signer's user id"
reqtype == SIGSUBPKT_LIST_HASHED ? "hashed ":"", type, (unsigned)n,
type == SIGSUBPKT_SIG_CREATED ? "signature creation time"
: type == SIGSUBPKT_SIG_EXPIRE ? "signature expiration time"
: type == SIGSUBPKT_EXPORTABLE ? "exportable"
: type == SIGSUBPKT_TRUST ? "trust signature"
: type == SIGSUBPKT_REGEXP ? "regular expression"
: type == SIGSUBPKT_REVOCABLE ? "revocable"
: type == SIGSUBPKT_KEY_EXPIRE ? "key expiration time"
: type == SIGSUBPKT_ARR ? "additional recipient request"
: type == SIGSUBPKT_PREF_SYM ? "preferred symmetric algorithms"
: type == SIGSUBPKT_REV_KEY ? "revocation key"
: type == SIGSUBPKT_ISSUER ? "issuer key ID"
: type == SIGSUBPKT_NOTATION ? "notation data"
: type == SIGSUBPKT_PREF_HASH ? "preferred hash algorithms"
: type == SIGSUBPKT_PREF_COMPR ? "preferred compression algorithms"
: type == SIGSUBPKT_KS_FLAGS ? "key server preferences"
: type == SIGSUBPKT_PREF_KS ? "preferred key server"
: type == SIGSUBPKT_PRIMARY_UID ? "primary user id"
: type == SIGSUBPKT_POLICY ? "policy URL"
: type == SIGSUBPKT_KEY_FLAGS ? "key flags"
: type == SIGSUBPKT_SIGNERS_UID ? "signer's user id"
: "?");
}
else if( type == reqtype )
@ -604,29 +625,17 @@ parse_subpkt( const byte *buffer, int reqtype )
n--;
if( n > buflen )
goto too_short;
if( ret_n )
*ret_n = n;
switch( type ) {
case 2: /* signature creation time */
case SIGSUBPKT_SIG_CREATED:
if( n < 4 )
break;
return buffer;
case 16:/* issuer key ID */
case SIGSUBPKT_ISSUER:/* issuer key ID */
if( n < 8 )
break;
return buffer;
case 3: /* signature expiration time */
case 4: /* exportable */
case 5: /* trust signature */
case 6: /* regular expression */
case 7: /* revocable */
case 9: /* key expiration time */
case 10:/* additional recipient request */
case 11:/* preferred symmetric algorithms */
case 12:/* revocation key */
case 20:/* notation data */
case 21:/* preferred hash algorithms */
case 22:/* preferred compression algorithms */
case 23:/* key server preferences */
case 24:/* preferred key server */
default: BUG(); /* not yet needed */
}
log_error("subpacket of type %d too short\n", type);
@ -718,12 +727,12 @@ parse_signature( IOBUF inp, int pkttype, unsigned long pktlen,
if( is_v4 ) { /*extract required information */
const byte *p;
p = parse_subpkt( sig->hashed_data, 2 );
p = parse_sig_subpkt( sig->hashed_data, SIGSUBPKT_SIG_CREATED, NULL );
if( !p )
log_error("signature packet without timestamp\n");
else
sig->timestamp = buffer_to_u32(p);
p = parse_subpkt( sig->unhashed_data, 16 );
p = parse_sig_subpkt( sig->unhashed_data, SIGSUBPKT_ISSUER, NULL );
if( !p )
log_error("signature packet without keyid\n");
else {
@ -742,8 +751,8 @@ parse_signature( IOBUF inp, int pkttype, unsigned long pktlen,
sig->digest_algo,
sig->digest_start[0], sig->digest_start[1] );
if( is_v4 ) {
parse_subpkt( sig->hashed_data, -1 );
parse_subpkt( sig->unhashed_data, -2 );
parse_sig_subpkt( sig->hashed_data, SIGSUBPKT_LIST_HASHED, NULL );
parse_sig_subpkt( sig->unhashed_data,SIGSUBPKT_LIST_UNHASHED, NULL);
}
}
if( is_ELGAMAL(sig->pubkey_algo) ) {

2
g10/revoke.c
View File

@ -159,7 +159,7 @@ gen_revoke( const char *uname )
/* create it */
rc = make_keysig_packet( &sig, pkc, NULL, skc, 0x20, DIGEST_ALGO_RMD160);
rc = make_keysig_packet( &sig, pkc, NULL, skc, 0x20, 0);
if( rc ) {
log_error("make_keysig_packet failed: %s\n", g10_errstr(rc));
goto leave;

1
g10/rsa.c
View File

@ -71,7 +71,6 @@ g10_rsa_sign( PKT_secret_cert *skc, PKT_signature *sig,
digest_algo = md_get_algo(md);
dp = md_read( md, digest_algo );
keyid_from_skc( skc, sig->keyid );
sig->digest_algo = digest_algo;
sig->digest_start[0] = dp[0];
sig->digest_start[1] = dp[1];

2
g10/sig-check.c
View File

@ -134,6 +134,7 @@ do_check( PKT_public_cert *pkc, PKT_signature *sig, MD_HANDLE digest )
md_write( digest, buf, 6 );
}
md_final( digest );
result = mpi_alloc( (md_digest_length(sig->digest_algo)
+BYTES_PER_MPI_LIMB-1) / BYTES_PER_MPI_LIMB );
mpi_set_buffer( result, md_read(digest, sig->digest_algo),
@ -344,6 +345,7 @@ check_key_signature( KBNODE root, KBNODE node, int *is_selfsig )
keyid_from_pkc( pkc, keyid );
md = md_open( algo, 0 );
md_start_debug(md, "check");
hash_public_cert( md, pkc );
hash_uid_node( unode, md, sig );
if( keyid[0] == sig->keyid[0] && keyid[1] == sig->keyid[1] ) {

67
g10/sign.c
View File

@ -266,19 +266,51 @@ sign_file( STRLIST filenames, int detached, STRLIST locusr,
skc = skc_rover->skc;
/* build the signature packet */
/* fixme: this code is partly duplicated in make_keysig_packet */
sig = m_alloc_clear( sizeof *sig );
sig->version = skc->version;
keyid_from_skc( skc, sig->keyid );
sig->pubkey_algo = skc->pubkey_algo;
sig->timestamp = make_timestamp();
sig->sig_class = opt.textmode && !outfile? 0x01 : 0x00;
md = md_copy( mfx.md );
if( sig->version >= 4 ) {
build_sig_subpkt_from_sig( sig );
md_putc( md, sig->version );
}
md_putc( md, sig->sig_class );
{ u32 a = sig->timestamp;
if( sig->version < 4 ) {
u32 a = sig->timestamp;
md_putc( md, (a >> 24) & 0xff );
md_putc( md, (a >> 16) & 0xff );
md_putc( md, (a >> 8) & 0xff );
md_putc( md, a & 0xff );
}
else {
byte buf[6];
size_t n;
md_putc( md, sig->pubkey_algo );
md_putc( md, sig->digest_algo );
if( sig->hashed_data ) {
n = (sig->hashed_data[0] << 8) | sig->hashed_data[1];
md_write( md, sig->hashed_data, n+2 );
n += 6;
}
else
n = 6;
/* add some magic */
buf[0] = sig->version;
buf[1] = 0xff;
buf[2] = n >> 24; /* hmmm, n is only 16 bit, so this is always 0 */
buf[3] = n >> 16;
buf[4] = n >> 8;
buf[5] = n;
md_write( md, buf, 6 );
}
md_final( md );
if( is_ELGAMAL(sig->pubkey_algo) )
@ -431,19 +463,50 @@ clearsign_file( const char *fname, STRLIST locusr, const char *outfile )
skc = skc_rover->skc;
/* build the signature packet */
/* fixme: this code is duplicated above */
sig = m_alloc_clear( sizeof *sig );
sig->version = skc->version;
keyid_from_skc( skc, sig->keyid );
sig->pubkey_algo = skc->pubkey_algo;
sig->timestamp = make_timestamp();
sig->sig_class = 0x01;
md = md_copy( textmd );
if( sig->version >= 4 ) {
build_sig_subpkt_from_sig( sig );
md_putc( md, sig->version );
}
md_putc( md, sig->sig_class );
{ u32 a = sig->timestamp;
if( sig->version < 4 ) {
u32 a = sig->timestamp;
md_putc( md, (a >> 24) & 0xff );
md_putc( md, (a >> 16) & 0xff );
md_putc( md, (a >> 8) & 0xff );
md_putc( md, a & 0xff );
}
else {
byte buf[6];
size_t n;
md_putc( md, sig->pubkey_algo );
md_putc( md, sig->digest_algo );
if( sig->hashed_data ) {
n = (sig->hashed_data[0] << 8) | sig->hashed_data[1];
md_write( md, sig->hashed_data, n+2 );
n += 6;
}
else
n = 6;
/* add some magic */
buf[0] = sig->version;
buf[1] = 0xff;
buf[2] = n >> 24; /* hmmm, n is only 16 bit, so this is always 0 */
buf[3] = n >> 16;
buf[4] = n >> 8;
buf[5] = n;
md_write( md, buf, 6 );
}
md_final( md );
if( is_ELGAMAL(sig->pubkey_algo) )

2
g10/trustdb.c
View File

@ -24,8 +24,8 @@
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>

5
include/errors.h
View File

@ -62,4 +62,9 @@
#define G10ERR_TIME_CONFLICT 40
#define G10ERR_WR_PUBKEY_ALGO 41 /* unusabe pubkey algo */
#ifndef HAVE_STRERROR
char *strerror( int n );
#endif
#endif /*G10_ERRORS_H*/

17
include/types.h
View File

@ -21,6 +21,23 @@
#ifndef G10_TYPES_H
#define G10_TYPES_H
/* The AC_CHECK_SIZEOF() in configure fails for some machines.
* we provide some fallback values here */
#if !SIZEOF_UNSIGNED_SHORT
#undef SIZEOF_UNSIGNED_SHORT
#define SIZEOF_UNSIGNED_SHORT 2
#endif
#if !SIZEOF_UNSIGNED_INT
#undef SIZEOF_UNSIGNED_INT
#define SIZEOF_UNSIGNED_INT 4
#endif
#if !SIZEOF_UNSIGNED_LONG
#undef SIZEOF_UNSIGNED_LONG
#define SIZEOF_UNSIGNED_LONG 4
#endif
#include <sys/types.h>

4
include/util.h
View File

@ -134,6 +134,10 @@ char *strlwr(char *a);
#ifndef HAVE_STRTOUL
#define strtoul(a,b,c) ((unsigned long)strtol((a),(b),(c)))
#endif
#ifndef HAVE_MEMMOVE
#define memmove(d, s, n) bcopy((s), (d), (n))
#endif
/******** some macros ************/
#ifndef STR

4
mpi/ChangeLog
View File

@ -1,3 +1,7 @@
Wed May 13 11:04:29 1998 Werner Koch (wk@isil.d.shuttle.de)
* config.links: Add support for MIPS
Thu Apr 9 11:31:36 1998 Werner Koch (wk@isil.d.shuttle.de)
* mpicoder.c (mpi_get_secure_buffer): New.

8
mpi/config.links
View File

@ -70,6 +70,14 @@ case "${target}" in
path="sparc32"
mpi_extra_modules="udiv"
;;
mips[34]*-*-* | mips*-*-irix6*)
echo '/* configured for MIPS3 */' >>./mpi/asm-syntax.h
path="mips3"
;;
mips*-*-*)
echo '/* configured for MIPS2 */' >>./mpi/asm-syntax.h
path="mips2"
;;
# Motorola 68k configurations. Let m68k mean 68020-68040.
# mc68000 or mc68060 configurations need to be specified explicitly

4
util/ChangeLog
View File

@ -1,3 +1,7 @@
Fri May 8 17:06:49 1998 Werner Koch (wk@isil.d.shuttle.de)
* errors.c (strerror): New if !HAVE_STRERROR
Mon May 4 19:48:03 1998 Werner Koch (wk@isil.d.shuttle.de)
* iobuf.c (iobuf_read): Code is now faster.

15
util/errors.c
View File

@ -25,6 +25,21 @@
#include "errors.h"
#ifndef HAVE_STRERROR
char *
strerror( int n )
{
extern char *sys_errlist[];
extern int sys_nerr;
static char buf[15];
if( n >= 0 && n < sys_nerr )
return sys_errlist[n];
strcpy( buf, "Unknown error" );
return buf;
}
#endif /* !HAVE_STRERROR */
const char *
g10_errstr( int err )
{

1
util/iobuf.c
View File

@ -24,6 +24,7 @@
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>