- Added test application for RSASSA-PSS signing and verification
diff --git a/programs/pkey/rsa_verify_pss.c b/programs/pkey/rsa_verify_pss.c
new file mode 100644
index 0000000..1fb20d8
--- /dev/null
+++ b/programs/pkey/rsa_verify_pss.c
@@ -0,0 +1,125 @@
+/*
+ * RSASSA-PSS/SHA-1 signature verification 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"
+#include "polarssl/pem.h"
+#include "polarssl/rsa.h"
+#include "polarssl/sha1.h"
+#include "polarssl/x509.h"
+
+int main( int argc, char *argv[] )
+{
+ FILE *f;
+ int ret, i;
+ rsa_context rsa;
+ unsigned char hash[20];
+ unsigned char buf[512];
+ char filename[512];
+
+ ret = 1;
+ if( argc != 3 )
+ {
+ printf( "usage: rsa_verify_pss <key_file> <filename>\n" );
+
+#ifdef WIN32
+ printf( "\n" );
+#endif
+
+ goto exit;
+ }
+
+ printf( "\n . Reading public key from '%s'", argv[1] );
+ fflush( stdout );
+
+ rsa_init( &rsa, RSA_PKCS_V21, POLARSSL_MD_SHA1 );
+
+ if( ( ret = x509parse_public_keyfile( &rsa, argv[1] ) ) != 0 )
+ {
+ printf( " failed\n ! x509parse_public_key returned %d\n\n", ret );
+ goto exit;
+ }
+
+ /*
+ * Extract the RSA signature from the text file
+ */
+ ret = 1;
+ snprintf( filename, 512, "%s.sig", argv[2] );
+
+ if( ( f = fopen( filename, "rb" ) ) == NULL )
+ {
+ printf( "\n ! Could not open %s\n\n", filename );
+ goto exit;
+ }
+
+ i = fread( buf, 1, rsa.len, f );
+
+ fclose( f );
+
+ if( i != rsa.len )
+ {
+ printf( "\n ! Invalid RSA signature format\n\n" );
+ goto exit;
+ }
+
+ /*
+ * Compute the SHA-1 hash of the input file and compare
+ * it with the hash decrypted from the RSA signature.
+ */
+ printf( "\n . Verifying the RSA/SHA-1 signature" );
+ fflush( stdout );
+
+ if( ( ret = sha1_file( argv[2], hash ) ) != 0 )
+ {
+ printf( " failed\n ! Could not open or read %s\n\n", argv[2] );
+ goto exit;
+ }
+
+ if( ( ret = rsa_pkcs1_verify( &rsa, RSA_PUBLIC, SIG_RSA_SHA1,
+ 20, hash, buf ) ) != 0 )
+ {
+ printf( " failed\n ! rsa_pkcs1_verify returned %d\n\n", ret );
+ goto exit;
+ }
+
+ printf( "\n . OK (the decrypted SHA-1 hash matches)\n\n" );
+
+ ret = 0;
+
+exit:
+
+#ifdef WIN32
+ printf( " + Press Enter to exit this program.\n" );
+ fflush( stdout ); getchar();
+#endif
+
+ return( ret );
+}