1 files changed, 55 insertions, 0 deletions
diff --git a/src/libstrongswan/plugins/hmac/hmac_signer.h b/src/libstrongswan/plugins/hmac/hmac_signer.h
new file mode 100644
index 000000000..969f482e7
--- /dev/null
+++ b/src/libstrongswan/plugins/hmac/hmac_signer.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2005-2008 Martin Willi
+ * Copyright (C) 2005 Jan Hutter
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * 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.
+ */
+
+/**
+ * @defgroup hmac_signer hmac_signer
+ * @{ @ingroup hmac_p
+ */
+
+#ifndef HMAC_SIGNER_H_
+#define HMAC_SIGNER_H_
+
+typedef struct hmac_signer_t hmac_signer_t;
+
+#include <crypto/signers/signer.h>
+
+/**
+ * Implementation of signer_t interface using HMAC.
+ *
+ * HMAC uses a standard hash function implemented in a hasher_t to build a MAC.
+ */
+struct hmac_signer_t {
+	
+	/**
+	 * generic signer_t interface for this signer
+	 */
+	signer_t signer_interface;
+};
+
+/**
+ * Creates a new hmac_signer_t.
+ *
+ * HMAC signatures are often truncated to shorten them to a more usable, but
+ * still secure enough length.
+ * Block size must be equal or smaller then the hash algorithms
+ * hash.
+ *
+ * @param algo		algorithm to implement
+ * @return			hmac_signer_t, NULL if  not supported
+ */
+hmac_signer_t *hmac_signer_create(integrity_algorithm_t algo);
+
+#endif /*HMAC_SIGNER_H_ @}*/