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/* pubkey.c - Public key encryption/decryption tests
* Copyright (C) 2001, 2002, 2003, 2005 Free Software Foundation, Inc.
*
* This file is part of Libgcrypt.
*
* Libgcrypt is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* Libgcrypt 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../src/gcrypt.h"
/* Sample RSA keys, taken from basic.c. */
static const char sample_private_key_1[] =
"(private-key\n"
" (openpgp-rsa\n"
" (n #00e0ce96f90b6c9e02f3922beada93fe50a875eac6bcc18bb9a9cf2e84965caa"
"2d1ff95a7f542465c6c0c19d276e4526ce048868a7a914fd343cc3a87dd74291"
"ffc565506d5bbb25cbac6a0e2dd1f8bcaab0d4a29c2f37c950f363484bf269f7"
"891440464baf79827e03a36e70b814938eebdc63e964247be75dc58b014b7ea251#)\n"
" (e #010001#)\n"
" (d #046129F2489D71579BE0A75FE029BD6CDB574EBF57EA8A5B0FDA942CAB943B11"
"7D7BB95E5D28875E0F9FC5FCC06A72F6D502464DABDED78EF6B716177B83D5BD"
"C543DC5D3FED932E59F5897E92E6F58A0F33424106A3B6FA2CBF877510E4AC21"
"C3EE47851E97D12996222AC3566D4CCB0B83D164074ABF7DE655FC2446DA1781#)\n"
" (p #00e861b700e17e8afe6837e7512e35b6ca11d0ae47d8b85161c67baf64377213"
"fe52d772f2035b3ca830af41d8a4120e1c1c70d12cc22f00d28d31dd48a8d424f1#)\n"
" (q #00f7a7ca5367c661f8e62df34f0d05c10c88e5492348dd7bddc942c9a8f369f9"
"35a07785d2db805215ed786e4285df1658eed3ce84f469b81b50d358407b4ad361#)\n"
" (u #304559a9ead56d2309d203811a641bb1a09626bc8eb36fffa23c968ec5bd891e"
"ebbafc73ae666e01ba7c8990bae06cc2bbe10b75e69fcacb353a6473079d8e9b#)\n"
" )\n"
")\n";
static const char sample_public_key_1[] =
"(public-key\n"
" (rsa\n"
" (n #00e0ce96f90b6c9e02f3922beada93fe50a875eac6bcc18bb9a9cf2e84965caa"
"2d1ff95a7f542465c6c0c19d276e4526ce048868a7a914fd343cc3a87dd74291"
"ffc565506d5bbb25cbac6a0e2dd1f8bcaab0d4a29c2f37c950f363484bf269f7"
"891440464baf79827e03a36e70b814938eebdc63e964247be75dc58b014b7ea251#)\n"
" (e #010001#)\n"
" )\n"
")\n";
#define RANDOM_DATA_NBITS 800
static int verbose;
static void
die (const char *format, ...)
{
va_list arg_ptr ;
va_start( arg_ptr, format ) ;
vfprintf (stderr, format, arg_ptr );
va_end(arg_ptr);
exit (1);
}
static void
check_keys_crypt (gcry_sexp_t pkey, gcry_sexp_t skey,
gcry_sexp_t plain0)
{
gcry_sexp_t plain1, cipher, l;
gcry_mpi_t x0, x1;
int rc;
int have_flags;
/* Extract data from plaintext. */
l = gcry_sexp_find_token (plain0, "value", 0);
x0 = gcry_sexp_nth_mpi (l, 1, GCRYMPI_FMT_USG);
/* Encrypt data. */
rc = gcry_pk_encrypt (&cipher, plain0, pkey);
if (rc)
die ("encryption failed: %s\n", gcry_strerror (rc));
l = gcry_sexp_find_token (cipher, "flags", 0);
have_flags = !!l;
gcry_sexp_release (l);
/* Decrypt data. */
rc = gcry_pk_decrypt (&plain1, cipher, skey);
gcry_sexp_release (cipher);
if (rc)
die ("decryption failed: %s\n", gcry_strerror (rc));
/* Extract decrypted data. Note that for compatibility reasons, the
output of gcry_pk_decrypt depends on whether a flags lists (even
if empty) occurs in its input data. Because we passed the output
of encrypt directly to decrypt, such a flag value won't be there
as of today. We check it anyway. */
l = gcry_sexp_find_token (plain1, "value", 0);
if (l)
{
if (!have_flags)
die ("compatibility mode of pk_decrypt broken\n");
gcry_sexp_release (plain1);
x1 = gcry_sexp_nth_mpi (l, 1, GCRYMPI_FMT_USG);
gcry_sexp_release (l);
}
else
{
if (have_flags)
die ("compatibility mode of pk_decrypt broken\n");
x1 = gcry_sexp_nth_mpi (plain1, 0, GCRYMPI_FMT_USG);
gcry_sexp_release (plain1);
}
/* Compare. */
if (gcry_mpi_cmp (x0, x1))
die ("data corrupted\n");
}
static void
check_keys (gcry_sexp_t pkey, gcry_sexp_t skey)
{
gcry_sexp_t plain;
gcry_mpi_t x;
int rc;
/* Create plain text. */
x = gcry_mpi_new (RANDOM_DATA_NBITS);
gcry_mpi_randomize (x, RANDOM_DATA_NBITS, GCRY_WEAK_RANDOM);
rc = gcry_sexp_build (&plain, NULL, "(data (flags raw) (value %m))", x);
if (rc)
die ("converting data for encryption failed: %s\n",
gcry_strerror (rc));
check_keys_crypt (pkey, skey, plain);
gcry_sexp_release (plain);
gcry_mpi_release (x);
/* Create plain text. */
x = gcry_mpi_new (RANDOM_DATA_NBITS);
gcry_mpi_randomize (x, RANDOM_DATA_NBITS, GCRY_WEAK_RANDOM);
rc = gcry_sexp_build (&plain, NULL, "(data (flags raw no-blinding) (value %m))", x);
if (rc)
die ("converting data for encryption failed: %s\n",
gcry_strerror (rc));
check_keys_crypt (pkey, skey, plain);
gcry_sexp_release (plain);
}
static void
get_keys_sample (gcry_sexp_t *pkey, gcry_sexp_t *skey)
{
gcry_sexp_t pub_key, sec_key;
int rc;
rc = gcry_sexp_sscan (&pub_key, NULL, sample_public_key_1,
strlen (sample_public_key_1));
if (! rc)
rc = gcry_sexp_sscan (&sec_key, NULL, sample_private_key_1,
strlen (sample_private_key_1));
if (rc)
die ("converting sample keys failed: %s\n", gcry_strerror (rc));
*pkey = pub_key;
*skey = sec_key;
}
static void
get_keys_new (gcry_sexp_t *pkey, gcry_sexp_t *skey)
{
gcry_sexp_t key_spec, key, pub_key, sec_key;
int rc;
rc = gcry_sexp_new (&key_spec,
"(genkey (rsa (nbits 4:1024)))", 0, 1);
if (rc)
die ("error creating S-expression: %s\n", gcry_strerror (rc));
rc = gcry_pk_genkey (&key, key_spec);
gcry_sexp_release (key_spec);
if (rc)
die ("error generating RSA key: %s\n", gcry_strerror (rc));
pub_key = gcry_sexp_find_token (key, "public-key", 0);
if (! pub_key)
die ("public part missing in key\n");
sec_key = gcry_sexp_find_token (key, "private-key", 0);
if (! sec_key)
die ("private part missing in key\n");
gcry_sexp_release (key);
*pkey = pub_key;
*skey = sec_key;
}
static void
check_run (void)
{
gcry_sexp_t pkey, skey;
/* Check sample keys. */
get_keys_sample (&pkey, &skey);
check_keys (pkey, skey);
gcry_sexp_release (pkey);
gcry_sexp_release (skey);
/* Check newly generated keys. */
get_keys_new (&pkey, &skey);
check_keys (pkey, skey);
gcry_sexp_release (pkey);
gcry_sexp_release (skey);
}
int
main (int argc, char **argv)
{
int debug = 0;
int i = 10;
if (argc > 1 && !strcmp (argv[1], "--verbose"))
verbose = 1;
else if (argc > 1 && !strcmp (argv[1], "--debug"))
verbose = debug = 1;
gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
if (!gcry_check_version (GCRYPT_VERSION))
die ("version mismatch\n");
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
if (debug)
gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1u , 0);
/* No valuable keys are create, so we can speed up our RNG. */
gcry_control (GCRYCTL_ENABLE_QUICK_RANDOM, 0);
for (; i > 0; i--)
check_run ();
return 0;
}
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