Key generation tool
diff --git a/programs/.gitignore b/programs/.gitignore
index cf7b0d8..003369b 100644
--- a/programs/.gitignore
+++ b/programs/.gitignore
@@ -10,6 +10,7 @@
pkey/dh_genprime
pkey/dh_server
pkey/ecdsa
+pkey/gen_key
pkey/key_app
pkey/key_app_writer
pkey/mpi_demo
diff --git a/programs/Makefile b/programs/Makefile
index c1522ce..6cee0f1 100644
--- a/programs/Makefile
+++ b/programs/Makefile
@@ -25,6 +25,7 @@
hash/md5sum hash/sha1sum \
hash/sha2sum pkey/dh_client \
pkey/dh_genprime pkey/dh_server \
+ pkey/gen_key \
pkey/key_app pkey/key_app_writer \
pkey/mpi_demo pkey/pk_decrypt \
pkey/pk_encrypt pkey/pk_sign \
@@ -96,6 +97,10 @@
echo " CC pkey/ecdsa.c"
$(CC) $(CFLAGS) $(OFLAGS) pkey/ecdsa.c $(LDFLAGS) -o $@
+pkey/gen_key: pkey/gen_key.c ../library/libpolarssl.a
+ echo " CC pkey/gen_key.c"
+ $(CC) $(CFLAGS) $(OFLAGS) pkey/gen_key.c $(LDFLAGS) -o $@
+
pkey/key_app: pkey/key_app.c ../library/libpolarssl.a
echo " CC pkey/key_app.c"
$(CC) $(CFLAGS) $(OFLAGS) pkey/key_app.c $(LDFLAGS) -o $@
diff --git a/programs/pkey/CMakeLists.txt b/programs/pkey/CMakeLists.txt
index 39e3494..291ff99 100644
--- a/programs/pkey/CMakeLists.txt
+++ b/programs/pkey/CMakeLists.txt
@@ -10,6 +10,9 @@
add_executable(ecdsa ecdsa.c)
target_link_libraries(ecdsa polarssl)
+add_executable(gen_key gen_key.c)
+target_link_libraries(gen_key polarssl)
+
add_executable(key_app key_app.c)
target_link_libraries(key_app polarssl)
@@ -52,6 +55,6 @@
add_executable(pk_decrypt pk_decrypt.c)
target_link_libraries(pk_decrypt polarssl)
-install(TARGETS dh_client dh_genprime dh_server key_app mpi_demo rsa_genkey rsa_sign rsa_verify rsa_encrypt rsa_decrypt pk_encrypt pk_decrypt pk_sign pk_verify
+install(TARGETS dh_client dh_genprime dh_server key_app mpi_demo rsa_genkey rsa_sign rsa_verify rsa_encrypt rsa_decrypt pk_encrypt pk_decrypt pk_sign pk_verify gen_key
DESTINATION "bin"
PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
diff --git a/programs/pkey/gen_key.c b/programs/pkey/gen_key.c
new file mode 100644
index 0000000..3cf682b
--- /dev/null
+++ b/programs/pkey/gen_key.c
@@ -0,0 +1,280 @@
+/*
+ * Key generation application
+ *
+ * Copyright (C) 2006-2013, Brainspark B.V.
+ *
+ * This file is part of PolarSSL (http://www.polarssl.org)
+ * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
+ *
+ * All rights reserved.
+ *
+ * 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.
+ */
+
+#include "polarssl/config.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "polarssl/error.h"
+#include "polarssl/pk.h"
+#include "polarssl/ecdsa.h"
+#include "polarssl/rsa.h"
+#include "polarssl/error.h"
+#include "polarssl/entropy.h"
+#include "polarssl/ctr_drbg.h"
+
+#if !defined(POLARSSL_PK_WRITE_C) || !defined(POLARSSL_FS_IO) || \
+ !defined(POLARSSL_ENTROPY_C) || !defined(POLARSSL_CTR_DRBG_C)
+int main( int argc, char *argv[] )
+{
+ ((void) argc);
+ ((void) argv);
+
+ printf( "POLARSSL_PK_WRITE_C and/or POLARSSL_FS_IO and/or "
+ "POLARSSL_ENTROPY_C and/or POLARSSL_CTR_DRBG_C "
+ "not defined.\n" );
+ return( 0 );
+}
+#else
+
+#define TYPE_RSA 0
+
+#define FORMAT_PEM 0
+#define FORMAT_DER 1
+
+#define DFL_TYPE TYPE_RSA
+#define DFL_RSA_KEYSIZE 4096
+#define DFL_FILENAME "keyfile.key"
+#define DFL_FORMAT FORMAT_PEM
+
+/*
+ * global options
+ */
+struct options
+{
+ int type; /* the type of key to generate */
+ int rsa_keysize; /* length of key in bits */
+ const char *filename; /* filename of the key file */
+ int format; /* the output format to use */
+} opt;
+
+static int write_private_key( pk_context *key, const char *output_file )
+{
+ int ret;
+ FILE *f;
+ unsigned char output_buf[16000];
+ unsigned char *c = output_buf;
+ size_t len = 0;
+
+ memset(output_buf, 0, 16000);
+ if( opt.format == FORMAT_PEM )
+ {
+ if( ( ret = pk_write_key_pem( key, output_buf, 16000 ) ) != 0 )
+ return( ret );
+
+ len = strlen( (char *) output_buf );
+ }
+ else
+ {
+ if( ( ret = pk_write_key_der( key, output_buf, 16000 ) ) < 0 )
+ return( ret );
+
+ len = ret;
+ c = output_buf + sizeof(output_buf) - len - 1;
+ }
+
+ if( ( f = fopen( output_file, "w" ) ) == NULL )
+ return( -1 );
+
+ if( fwrite( c, 1, len, f ) != len )
+ return( -1 );
+
+ fclose(f);
+
+ return( 0 );
+}
+
+#define USAGE \
+ "\n usage: gen_key param=<>...\n" \
+ "\n acceptable parameters:\n" \
+ " type=rsa default: rsa\n" \
+ " rsa_keysize=%%d default: 4096\n" \
+ " filename=%%s default: keyfile.key\n" \
+ " format=pem|der default: pem\n" \
+ "\n"
+
+int main( int argc, char *argv[] )
+{
+ int ret = 0;
+ pk_context key;
+ char buf[1024];
+ int i;
+ char *p, *q;
+ entropy_context entropy;
+ ctr_drbg_context ctr_drbg;
+ const char *pers = "gen_key";
+
+ /*
+ * Set to sane values
+ */
+ pk_init( &key );
+ memset( buf, 0, sizeof( buf ) );
+
+ if( argc == 0 )
+ {
+ usage:
+ ret = 1;
+ printf( USAGE );
+ goto exit;
+ }
+
+ opt.type = DFL_TYPE;
+ opt.rsa_keysize = DFL_RSA_KEYSIZE;
+ opt.filename = DFL_FILENAME;
+ opt.format = DFL_FORMAT;
+
+ for( i = 1; i < argc; i++ )
+ {
+ p = argv[i];
+ if( ( q = strchr( p, '=' ) ) == NULL )
+ goto usage;
+ *q++ = '\0';
+
+ if( strcmp( p, "type" ) == 0 )
+ {
+ if( strcmp( q, "rsa" ) == 0 )
+ opt.type = TYPE_RSA;
+ else
+ goto usage;
+ }
+ else if( strcmp( p, "format" ) == 0 )
+ {
+ if( strcmp( q, "pem" ) == 0 )
+ opt.format = FORMAT_PEM;
+ else if( strcmp( q, "der" ) == 0 )
+ opt.format = FORMAT_DER;
+ else
+ goto usage;
+ }
+ else if( strcmp( p, "rsa_keysize" ) == 0 )
+ {
+ opt.rsa_keysize = atoi( q );
+ if( opt.rsa_keysize < 1024 || opt.rsa_keysize > 8192 )
+ goto usage;
+ }
+ else if( strcmp( p, "filename" ) == 0 )
+ opt.filename = q;
+ else
+ goto usage;
+ }
+
+ printf( "\n . Seeding the random number generator..." );
+ fflush( stdout );
+
+ entropy_init( &entropy );
+ if( ( ret = ctr_drbg_init( &ctr_drbg, entropy_func, &entropy,
+ (const unsigned char *) pers,
+ strlen( pers ) ) ) != 0 )
+ {
+ printf( " failed\n ! ctr_drbg_init returned -0x%04x\n", -ret );
+ goto exit;
+ }
+
+ /*
+ * 1.1. Generate the key
+ */
+ printf( "\n . Generating the private key ..." );
+ fflush( stdout );
+
+#if defined(POLARSSL_RSA_C) && defined(POLARSSL_GENPRIME)
+ if( opt.type == TYPE_RSA )
+ {
+ pk_init_ctx( &key, pk_info_from_type( POLARSSL_PK_RSA ) );
+ ret = rsa_gen_key( pk_rsa( key ), ctr_drbg_random, &ctr_drbg,
+ opt.rsa_keysize, 65537 );
+ if( ret != 0 )
+ {
+ printf( " failed\n ! rsa_gen_key returned -0x%04x", -ret );
+ goto exit;
+ }
+
+ printf( " ok\n" );
+ }
+ else
+#endif /* POLARSSL_RSA_C */
+ {
+ printf( " failed\n ! key type not supported in library" );
+ goto exit;
+ }
+
+ /*
+ * 1.2 Print the key
+ */
+ printf( " . Key information ...\n" );
+
+#if defined(POLARSSL_RSA_C)
+ if( pk_get_type( &key ) == POLARSSL_PK_RSA )
+ {
+ rsa_context *rsa = pk_rsa( key );
+ mpi_write_file( "N: ", &rsa->N, 16, NULL );
+ mpi_write_file( "E: ", &rsa->E, 16, NULL );
+ mpi_write_file( "D: ", &rsa->D, 16, NULL );
+ mpi_write_file( "P: ", &rsa->P, 16, NULL );
+ mpi_write_file( "Q: ", &rsa->Q, 16, NULL );
+ mpi_write_file( "DP: ", &rsa->DP, 16, NULL );
+ mpi_write_file( "DQ: ", &rsa->DQ, 16, NULL );
+ mpi_write_file( "QP: ", &rsa->QP, 16, NULL );
+ }
+ else
+#endif
+#if defined(POLARSSL_ECP_C)
+ if( pk_get_type( &key ) == POLARSSL_PK_ECKEY )
+ {
+ ecp_keypair *ecp = pk_ec( key );
+ mpi_write_file( "Q(X): ", &ecp->Q.X, 16, NULL );
+ mpi_write_file( "Q(Y): ", &ecp->Q.Y, 16, NULL );
+ mpi_write_file( "Q(Z): ", &ecp->Q.Z, 16, NULL );
+ mpi_write_file( "D : ", &ecp->d , 16, NULL );
+ }
+ else
+#endif
+ printf("key type not supported yet\n");
+
+ write_private_key( &key, opt.filename );
+
+exit:
+
+ if( ret != 0 && ret != 1)
+ {
+#ifdef POLARSSL_ERROR_C
+ polarssl_strerror( ret, buf, sizeof( buf ) );
+ printf( " - %s\n", buf );
+#else
+ printf("\n");
+#endif
+ }
+
+ pk_free( &key );
+
+#if defined(_WIN32)
+ printf( " + Press Enter to exit this program.\n" );
+ fflush( stdout ); getchar();
+#endif
+
+ return( ret );
+}
+#endif /* POLARSSL_PK_WRITE_C && POLARSSL_FS_IO */