Protect against double inclusions.

1 files changed, 29 insertions, 0 deletions

diff --git a/lib/crypto.h b/lib/crypto.h
index 3fb1b86719..f93ac1e550 100644
--- a/lib/crypto.h
+++ b/lib/crypto.h
@@ -1,4 +1,33 @@
+/*
+ * Copyright (C) 2008 Free Software Foundation
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GNUTLS.
+ *
+ * The GNUTLS library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+ * USA
+ *
+ */
+
+#ifndef CRYPTO_H
+# define CRYPTO_H
+
 gnutls_crypto_single_cipher_st *_gnutls_get_crypto_cipher( gnutls_cipher_algorithm_t algo);
 gnutls_crypto_single_digest_st *_gnutls_get_crypto_digest( gnutls_digest_algorithm_t algo);
 gnutls_crypto_single_mac_st *_gnutls_get_crypto_mac( gnutls_mac_algorithm_t algo);
 void _gnutls_crypto_deregister(void);
+
+#endif /* CRYPTO_H */