Move from SHA-1 to SHA-256 as default in programs
diff --git a/programs/pkey/rsa_sign.c b/programs/pkey/rsa_sign.c
index e4f4970..f65c2a7 100644
--- a/programs/pkey/rsa_sign.c
+++ b/programs/pkey/rsa_sign.c
@@ -1,5 +1,5 @@
 /*
- *  RSA/SHA-1 signature creation program
+ *  RSA/SHA-256 signature creation program
  *
  *  Copyright (C) 2006-2011, ARM Limited, All Rights Reserved
  *
@@ -40,14 +40,14 @@
 #include "polarssl/sha1.h"
 
 #if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_RSA_C) ||  \
-    !defined(POLARSSL_SHA1_C) || !defined(POLARSSL_FS_IO)
+    !defined(POLARSSL_SHA256_C) || !defined(POLARSSL_FS_IO)
 int main( int argc, char *argv[] )
 {
     ((void) argc);
     ((void) argv);
 
     polarssl_printf("POLARSSL_BIGNUM_C and/or POLARSSL_RSA_C and/or "
-           "POLARSSL_SHA1_C and/or POLARSSL_FS_IO not defined.\n");
+           "POLARSSL_SHA256_C and/or POLARSSL_FS_IO not defined.\n");
     return( 0 );
 }
 #else
@@ -112,10 +112,10 @@
     }
 
     /*
-     * Compute the SHA-1 hash of the input file,
+     * Compute the SHA-256 hash of the input file,
      * then calculate the RSA signature of the hash.
      */
-    polarssl_printf( "\n  . Generating the RSA/SHA-1 signature" );
+    polarssl_printf( "\n  . Generating the RSA/SHA-256 signature" );
     fflush( stdout );
 
     if( ( ret = sha1_file( argv[1], hash ) ) != 0 )
@@ -124,7 +124,7 @@
         goto exit;
     }
 
-    if( ( ret = rsa_pkcs1_sign( &rsa, NULL, NULL, RSA_PRIVATE, POLARSSL_MD_SHA1,
+    if( ( ret = rsa_pkcs1_sign( &rsa, NULL, NULL, RSA_PRIVATE, POLARSSL_MD_SHA256,
                                 20, hash, buf ) ) != 0 )
     {
         polarssl_printf( " failed\n  ! rsa_pkcs1_sign returned -0x%0x\n\n", -ret );
@@ -160,5 +160,5 @@
 
     return( ret );
 }
-#endif /* POLARSSL_BIGNUM_C && POLARSSL_RSA_C && POLARSSL_SHA1_C &&
+#endif /* POLARSSL_BIGNUM_C && POLARSSL_RSA_C && POLARSSL_SHA256_C &&
           POLARSSL_FS_IO */