From 774a362e87feab25f1be16fbca08269ddc7121a4 Mon Sep 17 00:00:00 2001
From: Rene Mayrhofer <rene@mayrhofer.eu.org>
Date: Thu, 12 Apr 2007 20:41:31 +0000
Subject: Major new upstream release, just ran svn-upgrade for now (and wrote
 some debian/changelong entries).

---
 src/libstrongswan/crypto/signers/hmac_signer.h | 68 ++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 src/libstrongswan/crypto/signers/hmac_signer.h

(limited to 'src/libstrongswan/crypto/signers/hmac_signer.h')

diff --git a/src/libstrongswan/crypto/signers/hmac_signer.h b/src/libstrongswan/crypto/signers/hmac_signer.h
new file mode 100644
index 000000000..2449069bd
--- /dev/null
+++ b/src/libstrongswan/crypto/signers/hmac_signer.h
@@ -0,0 +1,68 @@
+/**
+ * @file hmac_signer.h
+ * 
+ * @brief Interface of hmac_signer_t.
+ * 
+ */
+
+/*
+ * Copyright (C) 2005-2006 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.
+ */
+
+#ifndef HMAC_SIGNER_H_
+#define HMAC_SIGNER_H_
+
+typedef struct hmac_signer_t hmac_signer_t;
+
+#include <crypto/signers/signer.h>
+#include <crypto/hashers/hasher.h>
+
+/**
+ * @brief Implementation of signer_t interface using HMAC.
+ *
+ * HMAC uses a standard hash function implemented in a hasher_t to build
+ * a MAC.
+ *
+ * @ingroup signers
+ */
+struct hmac_signer_t {
+	
+	/**
+	 * generic signer_t interface for this signer
+	 */
+	signer_t signer_interface;
+};
+
+/**
+ * @brief 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 hash_algoritm		Hash algorithm to use with signer
+ * @param block_size		Size of resulting signature (truncated to block_size)
+ * @return					
+ * 							- hmac_signer_t
+ * 							- NULL if hash algorithm not supported
+ * 
+ * @ingroup signers
+ */
+hmac_signer_t *hmac_signer_create(hash_algorithm_t hash_algoritm,
+								  size_t block_size);
+
+
+#endif /*HMAC_SIGNER_H_*/
-- 
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