- Added a generic entropy accumulator that provides support for adding custom entropy sources and added some generic and platform dependent entropy sources
diff --git a/programs/random/gen_random_ctr_drbg.c b/programs/random/gen_random_ctr_drbg.c
new file mode 100644
index 0000000..e926ad0
--- /dev/null
+++ b/programs/random/gen_random_ctr_drbg.c
@@ -0,0 +1,91 @@
+/**
+ * \brief Use and generate random data into a file via the CTR_DBRG based on AES
+ *
+ * Copyright (C) 2006-2011, 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 "polarssl/entropy.h"
+#include "polarssl/ctr_drbg.h"
+
+#include <stdio.h>
+
+#if !defined(POLARSSL_CTR_DRBG_C) || !defined(POLARSSL_ENTROPY_C)
+int main( int argc, char *argv[] )
+{
+ ((void) argc);
+ ((void) argv);
+
+ printf("POLARSSL_CTR_DRBG_C or POLARSSL_ENTROPY_C not defined.\n");
+ return( 0 );
+}
+#else
+int main( int argc, char *argv[] )
+{
+ FILE *f;
+ int i, k, ret;
+ ctr_drbg_context ctr_drbg;
+ entropy_context entropy;
+ unsigned char buf[1024];
+
+ if( argc < 2 )
+ {
+ fprintf( stderr, "usage: %s <output filename>\n", argv[0] );
+ return( 1 );
+ }
+
+ if( ( f = fopen( argv[1], "wb+" ) ) == NULL )
+ {
+ printf( "failed to open '%s' for writing.\n", argv[0] );
+ return( 1 );
+ }
+
+ entropy_init( &entropy );
+ ctr_drbg_init( &ctr_drbg, entropy_func, &entropy, (unsigned char *) "RANDOM_GEN", 10 );
+ ctr_drbg_set_prediction_resistance( &ctr_drbg, CTR_DRBG_PR_OFF );
+
+ for( i = 0, k = 768; i < k; i++ )
+ {
+ ret = ctr_drbg_random( &ctr_drbg, buf, sizeof( buf ) );
+ if( ret != 0 )
+ {
+ printf("failed!\n");
+ goto cleanup;
+ }
+
+ fwrite( buf, 1, sizeof( buf ), f );
+
+ printf( "Generating 32Mb of data in file '%s'... %04.1f" \
+ "%% done\r", argv[1], (100 * (float) (i + 1)) / k );
+ fflush( stdout );
+ }
+
+ ret = 0;
+
+cleanup:
+
+ fclose( f );
+
+ return( ret );
+}
+#endif /* POLARSSL_HAVEGE_C && POLARSSL_ENTROPY_C */