aesni: Add a CCM AEAD reusing the key schedule

2015-04-15 11:35:27 +02:00
parent 8488dea2f9
commit 1ae46dfba2
4 changed files with 645 additions and 0 deletions
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2015 Martin Willi
+ * Copyright (C) 2015 revosec AG
+ *
+ * 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 aesni_ccm aesni_ccm
+ * @{ @ingroup aesni
+ */
+
+#ifndef AESNI_CCM_H_
+#define AESNI_CCM_H_
+
+#include <library.h>
+
+typedef struct aesni_ccm_t aesni_ccm_t;
+
+/**
+ * CCM mode AEAD using AES-NI
+ */
+struct aesni_ccm_t {
+
+	/**
+	 * Implements aead_t interface
+	 */
+	aead_t aead;
+};
+
+/**
+ * Create a aesni_ccm instance.
+ *
+ * @param algo			encryption algorithm, ENCR_AES_CCM*
+ * @param key_size		AES key size, in bytes
+ * @param salt_size		size of salt value
+ * @return				AES-CCM AEAD, NULL if not supported
+ */
+aesni_ccm_t *aesni_ccm_create(encryption_algorithm_t algo,
+							  size_t key_size, size_t salt_size);
+
+#endif /** AESNI_CCM_H_ @}*/