- Added generic_sum example application to show use of generic message digest layer.
diff --git a/programs/hash/generic_sum.c b/programs/hash/generic_sum.c
new file mode 100644
index 0000000..add0ecd
--- /dev/null
+++ b/programs/hash/generic_sum.c
@@ -0,0 +1,206 @@
+/*
+ * generic message digest layer demonstration program
+ *
+ * Copyright (C) 2006-2010, 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.
+ */
+
+#ifndef _CRT_SECURE_NO_DEPRECATE
+#define _CRT_SECURE_NO_DEPRECATE 1
+#endif
+
+#include <string.h>
+#include <stdio.h>
+
+#include "polarssl/md.h"
+
+static int generic_wrapper( const md_info_t *md_info, char *filename, unsigned char *sum )
+{
+ int ret = md_file( md_info, filename, sum );
+
+ if( ret == 1 )
+ fprintf( stderr, "failed to open: %s\n", filename );
+
+ if( ret == 2 )
+ fprintf( stderr, "failed to read: %s\n", filename );
+
+ return( ret );
+}
+
+static int generic_print( const md_info_t *md_info, char *filename )
+{
+ int i;
+ unsigned char sum[POLARSSL_MD_MAX_SIZE];
+
+ if( generic_wrapper( md_info, filename, sum ) != 0 )
+ return( 1 );
+
+ for( i = 0; i < md_info->size; i++ )
+ printf( "%02x", sum[i] );
+
+ printf( " %s\n", filename );
+ return( 0 );
+}
+
+static int generic_check( const md_info_t *md_info, char *filename )
+{
+ int i;
+ size_t n;
+ FILE *f;
+ int nb_err1, nb_err2;
+ int nb_tot1, nb_tot2;
+ unsigned char sum[POLARSSL_MD_MAX_SIZE];
+ char buf[POLARSSL_MD_MAX_SIZE * 2 + 1], line[1024];
+
+ if( ( f = fopen( filename, "rb" ) ) == NULL )
+ {
+ printf( "failed to open: %s\n", filename );
+ return( 1 );
+ }
+
+ nb_err1 = nb_err2 = 0;
+ nb_tot1 = nb_tot2 = 0;
+
+ memset( line, 0, sizeof( line ) );
+
+ n = sizeof( line );
+
+ while( fgets( line, n - 1, f ) != NULL )
+ {
+ n = strlen( line );
+
+ if( n < (size_t) 2 * md_info->size + 4 )
+ {
+ printf("No '%s' hash found on line.\n", md_info->name);
+ continue;
+ }
+
+ if( line[2 * md_info->size] != ' ' || line[2 * md_info->size + 1] != ' ' )
+ {
+ printf("No '%s' hash found on line.\n", md_info->name);
+ continue;
+ }
+
+ if( line[n - 1] == '\n' ) { n--; line[n] = '\0'; }
+ if( line[n - 1] == '\r' ) { n--; line[n] = '\0'; }
+
+ nb_tot1++;
+
+ if( generic_wrapper( md_info, line + 2 + 2 * md_info->size, sum ) != 0 )
+ {
+ nb_err1++;
+ continue;
+ }
+
+ nb_tot2++;
+
+ for( i = 0; i < md_info->size; i++ )
+ sprintf( buf + i * 2, "%02x", sum[i] );
+
+ if( memcmp( line, buf, 2 * md_info->size ) != 0 )
+ {
+ nb_err2++;
+ fprintf( stderr, "wrong checksum: %s\n", line + 66 );
+ }
+
+ n = sizeof( line );
+ }
+
+ if( nb_err1 != 0 )
+ {
+ printf( "WARNING: %d (out of %d) input files could "
+ "not be read\n", nb_err1, nb_tot1 );
+ }
+
+ if( nb_err2 != 0 )
+ {
+ printf( "WARNING: %d (out of %d) computed checksums did "
+ "not match\n", nb_err2, nb_tot2 );
+ }
+
+ return( nb_err1 != 0 || nb_err2 != 0 );
+}
+
+int main( int argc, char *argv[] )
+{
+ int ret, i;
+ const md_info_t *md_info;
+ md_context_t md_ctx;
+
+ memset( &md_ctx, 0, sizeof( md_context_t ));
+
+ if( argc == 1 )
+ {
+ const int *list;
+
+ printf( "print mode: generic_sum <md> <file> <file> ...\n" );
+ printf( "check mode: generic_sum <md> -c <checksum file>\n" );
+
+ printf( "\nAvailable message digests:\n" );
+ list = md_list();
+ while( *list )
+ {
+ md_info = md_info_from_type( *list );
+ printf( " %s\n", md_info->name );
+ list++;
+ }
+
+#ifdef WIN32
+ printf( "\n Press Enter to exit this program.\n" );
+ fflush( stdout ); getchar();
+#endif
+
+ return( 1 );
+ }
+
+ /*
+ * Read the MD from the command line
+ */
+ md_info = md_info_from_string( argv[1] );
+ if( md_info == NULL )
+ {
+ fprintf( stderr, "Message Digest '%s' not found\n", argv[1] );
+ return( 1 );
+ }
+ if( md_init_ctx( &md_ctx, md_info) )
+ {
+ fprintf( stderr, "Failed to initialize context.\n" );
+ return( 1 );
+ }
+ printf("%08x\n", (unsigned int) md_ctx.md_ctx );
+
+ ret = 0;
+ if( argc == 4 && strcmp( "-c", argv[2] ) == 0 )
+ {
+ ret |= generic_check( md_info, argv[3] );
+ goto exit;
+ }
+
+ printf("%08x\n", (unsigned int) md_ctx.md_ctx );
+ for( i = 2; i < argc; i++ )
+ ret |= generic_print( md_info, argv[i] );
+
+exit:
+ printf("%08x\n", (unsigned int) md_ctx.md_ctx );
+ md_free_ctx( &md_ctx );
+
+ return( ret );
+}