2009-01-03 21:22:43 +00:00
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/*
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* Diffie-Hellman-Merkle key exchange (prime generation)
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*
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2020-08-19 14:37:36 +00:00
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* Copyright The Mbed TLS Contributors
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Update license headers to Apache-2.0 OR GPL-2.0-or-later
This will allow us to ship the LTS branches in a single archive
This commit was generated using the following script:
# ========================
#!/bin/sh
header1='\ * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later\
*\
* This file is provided under the Apache License 2.0, or the\
* GNU General Public License v2.0 or later.\
*\
* **********\
* Apache License 2.0:\
*\
* Licensed under the Apache License, Version 2.0 (the "License"); you may\
* not use this file except in compliance with the License.\
* You may obtain a copy of the License at\
*\
* http://www.apache.org/licenses/LICENSE-2.0\
*\
* Unless required by applicable law or agreed to in writing, software\
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT\
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\
* See the License for the specific language governing permissions and\
* limitations under the License.\
*\
* **********\
*\
* **********\
* GNU General Public License v2.0 or later:\
*\
* This program 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.\
*\
* This program 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.,\
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\
*\
* **********'
find -path './.git' -prune -o '(' -name '*.c' -o -name '*.cpp' -o -name '*.fmt' -o -name '*.h' ')' -print | xargs sed -i "
# Normalize the first line of the copyright headers (no text on the first line of a block comment)
/^\/\*.*Copyright.*Arm/I s/\/\*/&\n */
# Insert new copyright header
/SPDX-License-Identifier/ i\
$header1
# Delete old copyright header
/SPDX-License-Identifier/,$ {
# Delete lines until the one preceding the mbedtls declaration
N
1,/This file is part of/ {
/This file is part of/! D
}
}
"
# Format copyright header for inclusion into scripts
header2=$(echo "$header1" | sed 's/^\\\? \* \?/#/')
find -path './.git' -prune -o '(' -name '*.gdb' -o -name '*.pl' -o -name '*.py' -o -name '*.sh' ')' -print | xargs sed -i "
# Insert new copyright header
/SPDX-License-Identifier/ i\
$header2
# Delete old copyright header
/SPDX-License-Identifier/,$ {
# Delete lines until the one preceding the mbedtls declaration
N
1,/This file is part of/ {
/This file is part of/! D
}
}
"
# ========================
Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
2020-06-05 11:02:18 +00:00
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* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
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*
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* This file is provided under the Apache License 2.0, or the
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* GNU General Public License v2.0 or later.
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*
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* **********
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* Apache License 2.0:
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2010-07-18 20:36:00 +00:00
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*
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2015-09-04 12:21:07 +00:00
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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2010-07-18 20:36:00 +00:00
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*
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2015-09-04 12:21:07 +00:00
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* http://www.apache.org/licenses/LICENSE-2.0
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2009-01-03 21:22:43 +00:00
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*
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2015-09-04 12:21:07 +00:00
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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2009-01-03 21:22:43 +00:00
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*
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Update license headers to Apache-2.0 OR GPL-2.0-or-later
This will allow us to ship the LTS branches in a single archive
This commit was generated using the following script:
# ========================
#!/bin/sh
header1='\ * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later\
*\
* This file is provided under the Apache License 2.0, or the\
* GNU General Public License v2.0 or later.\
*\
* **********\
* Apache License 2.0:\
*\
* Licensed under the Apache License, Version 2.0 (the "License"); you may\
* not use this file except in compliance with the License.\
* You may obtain a copy of the License at\
*\
* http://www.apache.org/licenses/LICENSE-2.0\
*\
* Unless required by applicable law or agreed to in writing, software\
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT\
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\
* See the License for the specific language governing permissions and\
* limitations under the License.\
*\
* **********\
*\
* **********\
* GNU General Public License v2.0 or later:\
*\
* This program 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.\
*\
* This program 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.,\
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\
*\
* **********'
find -path './.git' -prune -o '(' -name '*.c' -o -name '*.cpp' -o -name '*.fmt' -o -name '*.h' ')' -print | xargs sed -i "
# Normalize the first line of the copyright headers (no text on the first line of a block comment)
/^\/\*.*Copyright.*Arm/I s/\/\*/&\n */
# Insert new copyright header
/SPDX-License-Identifier/ i\
$header1
# Delete old copyright header
/SPDX-License-Identifier/,$ {
# Delete lines until the one preceding the mbedtls declaration
N
1,/This file is part of/ {
/This file is part of/! D
}
}
"
# Format copyright header for inclusion into scripts
header2=$(echo "$header1" | sed 's/^\\\? \* \?/#/')
find -path './.git' -prune -o '(' -name '*.gdb' -o -name '*.pl' -o -name '*.py' -o -name '*.sh' ')' -print | xargs sed -i "
# Insert new copyright header
/SPDX-License-Identifier/ i\
$header2
# Delete old copyright header
/SPDX-License-Identifier/,$ {
# Delete lines until the one preceding the mbedtls declaration
N
1,/This file is part of/ {
/This file is part of/! D
}
}
"
# ========================
Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
2020-06-05 11:02:18 +00:00
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* **********
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*
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* **********
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* GNU General Public License v2.0 or later:
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* **********
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2009-01-03 21:22:43 +00:00
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*/
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2015-04-08 10:49:31 +00:00
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#if !defined(MBEDTLS_CONFIG_FILE)
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2015-03-09 17:05:11 +00:00
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#include "mbedtls/config.h"
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2014-04-29 10:39:06 +00:00
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#else
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2015-04-08 10:49:31 +00:00
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#include MBEDTLS_CONFIG_FILE
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2014-04-29 10:39:06 +00:00
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#endif
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2009-01-03 21:22:43 +00:00
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2015-04-08 10:49:31 +00:00
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#if defined(MBEDTLS_PLATFORM_C)
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2015-03-09 17:05:11 +00:00
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#include "mbedtls/platform.h"
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2015-01-19 14:26:37 +00:00
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#else
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2015-02-11 14:06:19 +00:00
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#include <stdio.h>
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2016-08-24 17:20:20 +00:00
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#include <stdlib.h>
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2018-04-29 18:34:09 +00:00
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#define mbedtls_printf printf
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#define mbedtls_time_t time_t
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2018-12-10 13:31:45 +00:00
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#define mbedtls_exit exit
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2018-04-30 21:42:33 +00:00
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#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
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2018-04-29 18:34:09 +00:00
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#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
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#endif /* MBEDTLS_PLATFORM_C */
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2015-01-19 14:26:37 +00:00
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2015-07-03 14:57:52 +00:00
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#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_ENTROPY_C) || \
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!defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_CTR_DRBG_C) || \
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!defined(MBEDTLS_GENPRIME)
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int main( void )
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{
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mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_ENTROPY_C and/or "
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"MBEDTLS_FS_IO and/or MBEDTLS_CTR_DRBG_C and/or "
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"MBEDTLS_GENPRIME not defined.\n");
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2019-04-24 12:24:46 +00:00
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mbedtls_exit( 0 );
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2015-07-03 14:57:52 +00:00
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}
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#else
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2015-03-09 17:05:11 +00:00
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#include "mbedtls/bignum.h"
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#include "mbedtls/entropy.h"
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#include "mbedtls/ctr_drbg.h"
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2009-01-03 21:22:43 +00:00
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2015-02-11 14:06:19 +00:00
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#include <stdio.h>
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#include <string.h>
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2015-07-03 14:57:52 +00:00
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#define USAGE \
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"\n usage: dh_genprime param=<>...\n" \
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"\n acceprable parameters:\n" \
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" bits=%%d default: 2048\n"
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#define DFL_BITS 2048
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2015-02-11 14:06:19 +00:00
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2009-01-03 21:22:43 +00:00
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/*
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* Note: G = 4 is always a quadratic residue mod P,
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* so it is a generator of order Q (with P = 2*Q+1).
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*/
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#define GENERATOR "4"
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2018-12-06 17:43:31 +00:00
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2015-07-03 14:57:52 +00:00
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int main( int argc, char **argv )
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2009-01-03 21:22:43 +00:00
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{
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int ret = 1;
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2018-04-29 18:34:09 +00:00
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int exit_code = MBEDTLS_EXIT_FAILURE;
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2015-04-08 10:49:31 +00:00
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mbedtls_mpi G, P, Q;
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mbedtls_entropy_context entropy;
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mbedtls_ctr_drbg_context ctr_drbg;
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2013-06-24 11:01:08 +00:00
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const char *pers = "dh_genprime";
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2009-01-03 21:22:43 +00:00
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FILE *fout;
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2015-07-03 14:57:52 +00:00
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int nbits = DFL_BITS;
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int i;
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char *p, *q;
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2009-01-03 21:22:43 +00:00
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2015-04-08 10:49:31 +00:00
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mbedtls_mpi_init( &G ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q );
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2015-04-28 20:52:30 +00:00
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mbedtls_ctr_drbg_init( &ctr_drbg );
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2015-04-08 10:49:31 +00:00
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mbedtls_entropy_init( &entropy );
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2014-04-17 14:00:59 +00:00
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2015-07-03 14:57:52 +00:00
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if( argc == 0 )
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{
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usage:
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mbedtls_printf( USAGE );
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2020-08-22 20:56:46 +00:00
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goto exit;
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2015-07-03 14:57:52 +00:00
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}
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for( i = 1; i < argc; i++ )
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{
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p = argv[i];
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if( ( q = strchr( p, '=' ) ) == NULL )
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goto usage;
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*q++ = '\0';
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if( strcmp( p, "bits" ) == 0 )
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{
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nbits = atoi( q );
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if( nbits < 0 || nbits > MBEDTLS_MPI_MAX_BITS )
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goto usage;
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}
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else
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goto usage;
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}
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2015-04-08 10:49:31 +00:00
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if( ( ret = mbedtls_mpi_read_string( &G, 10, GENERATOR ) ) != 0 )
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2014-04-17 14:00:59 +00:00
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{
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2015-04-08 10:49:31 +00:00
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mbedtls_printf( " failed\n ! mbedtls_mpi_read_string returned %d\n", ret );
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2014-04-17 14:00:59 +00:00
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goto exit;
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}
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2009-01-03 21:22:43 +00:00
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2015-04-08 10:49:31 +00:00
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mbedtls_printf( " ! Generating large primes may take minutes!\n" );
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2013-11-22 20:16:10 +00:00
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2015-04-08 10:49:31 +00:00
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mbedtls_printf( "\n . Seeding the random number generator..." );
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2009-01-03 21:22:43 +00:00
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fflush( stdout );
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2015-04-28 20:52:30 +00:00
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if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
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2013-06-24 11:01:08 +00:00
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(const unsigned char *) pers,
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strlen( pers ) ) ) != 0 )
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2011-12-04 17:09:26 +00:00
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{
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2015-04-28 20:52:30 +00:00
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mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned %d\n", ret );
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2011-12-04 17:09:26 +00:00
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goto exit;
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}
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2009-01-03 21:22:43 +00:00
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2015-04-08 10:49:31 +00:00
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mbedtls_printf( " ok\n . Generating the modulus, please wait..." );
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2009-01-03 21:22:43 +00:00
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fflush( stdout );
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/*
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* This can take a long time...
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*/
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2015-07-03 14:57:52 +00:00
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if( ( ret = mbedtls_mpi_gen_prime( &P, nbits, 1,
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2015-04-08 10:49:31 +00:00
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mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
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2009-01-03 21:22:43 +00:00
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{
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2015-04-08 10:49:31 +00:00
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mbedtls_printf( " failed\n ! mbedtls_mpi_gen_prime returned %d\n\n", ret );
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2009-01-03 21:22:43 +00:00
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goto exit;
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}
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2015-04-08 10:49:31 +00:00
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mbedtls_printf( " ok\n . Verifying that Q = (P-1)/2 is prime..." );
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2009-01-03 21:22:43 +00:00
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fflush( stdout );
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2015-04-08 10:49:31 +00:00
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if( ( ret = mbedtls_mpi_sub_int( &Q, &P, 1 ) ) != 0 )
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2009-01-03 21:22:43 +00:00
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{
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2015-04-08 10:49:31 +00:00
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mbedtls_printf( " failed\n ! mbedtls_mpi_sub_int returned %d\n\n", ret );
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2009-01-03 21:22:43 +00:00
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goto exit;
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}
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2015-04-08 10:49:31 +00:00
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if( ( ret = mbedtls_mpi_div_int( &Q, NULL, &Q, 2 ) ) != 0 )
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2009-01-03 21:22:43 +00:00
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{
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2015-04-08 10:49:31 +00:00
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mbedtls_printf( " failed\n ! mbedtls_mpi_div_int returned %d\n\n", ret );
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2009-01-03 21:22:43 +00:00
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goto exit;
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}
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2018-09-18 13:48:23 +00:00
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if( ( ret = mbedtls_mpi_is_prime_ext( &Q, 50, mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
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2009-01-03 21:22:43 +00:00
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{
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2015-04-08 10:49:31 +00:00
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mbedtls_printf( " failed\n ! mbedtls_mpi_is_prime returned %d\n\n", ret );
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2009-01-03 21:22:43 +00:00
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goto exit;
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}
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2015-04-08 10:49:31 +00:00
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mbedtls_printf( " ok\n . Exporting the value in dh_prime.txt..." );
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2009-01-03 21:22:43 +00:00
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fflush( stdout );
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if( ( fout = fopen( "dh_prime.txt", "wb+" ) ) == NULL )
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{
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2015-04-08 10:49:31 +00:00
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mbedtls_printf( " failed\n ! Could not create dh_prime.txt\n\n" );
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2009-01-03 21:22:43 +00:00
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goto exit;
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}
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2015-04-08 10:49:31 +00:00
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if( ( ret = mbedtls_mpi_write_file( "P = ", &P, 16, fout ) != 0 ) ||
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( ret = mbedtls_mpi_write_file( "G = ", &G, 16, fout ) != 0 ) )
|
2009-01-03 21:22:43 +00:00
|
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{
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2015-04-08 10:49:31 +00:00
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mbedtls_printf( " failed\n ! mbedtls_mpi_write_file returned %d\n\n", ret );
|
2016-05-31 13:03:54 +00:00
|
|
|
fclose( fout );
|
2009-01-03 21:22:43 +00:00
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|
goto exit;
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|
}
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2015-04-08 10:49:31 +00:00
|
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|
mbedtls_printf( " ok\n\n" );
|
2009-01-03 21:22:43 +00:00
|
|
|
fclose( fout );
|
|
|
|
|
2018-04-29 18:34:09 +00:00
|
|
|
exit_code = MBEDTLS_EXIT_SUCCESS;
|
|
|
|
|
2009-01-03 21:22:43 +00:00
|
|
|
exit:
|
|
|
|
|
2015-04-08 10:49:31 +00:00
|
|
|
mbedtls_mpi_free( &G ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q );
|
|
|
|
mbedtls_ctr_drbg_free( &ctr_drbg );
|
|
|
|
mbedtls_entropy_free( &entropy );
|
2009-01-03 21:22:43 +00:00
|
|
|
|
2011-11-18 14:26:47 +00:00
|
|
|
#if defined(_WIN32)
|
2015-04-08 10:49:31 +00:00
|
|
|
mbedtls_printf( " Press Enter to exit this program.\n" );
|
2009-01-03 21:22:43 +00:00
|
|
|
fflush( stdout ); getchar();
|
|
|
|
#endif
|
|
|
|
|
2019-04-24 12:24:46 +00:00
|
|
|
mbedtls_exit( exit_code );
|
2009-01-03 21:22:43 +00:00
|
|
|
}
|
2015-04-08 10:49:31 +00:00
|
|
|
#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_FS_IO &&
|
|
|
|
MBEDTLS_CTR_DRBG_C && MBEDTLS_GENPRIME */
|