SEC: Add Yarrow entropy pool implementation.

[bertos.git] / bertos / sec / entropy / yarrow_pool.h

diff --git a/bertos/sec/entropy/yarrow_pool.h b/bertos/sec/entropy/yarrow_pool.h
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+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief Yarrow pool implementation
+ * \author Giovanni Bajo <rasky@develer.com>
+ *
+ */
+
+#ifndef SEC_ENTROPY_YARROW_POOL_H
+#define SEC_ENTROPY_YARROW_POOL_H
+
+#include <sec/entropy.h>
+#include <sec/hash/sha1.h>
+
+typedef struct
+{
+       EntropyPool e;
+
+       struct YarrowPool
+       {
+               SHA1_Context hash;
+               int entropy[CONFIG_ENTROPY_NUM_SOURCES];
+       } pools[2];
+
+       struct YarrowSources
+       {
+               int curpool;
+       } sources[CONFIG_ENTROPY_NUM_SOURCES];
+
+} YarrowPoolContext;
+
+void yarrowpool_init(YarrowPoolContext *ctx);
+
+#endif /* SEC_ENTROPY_YARROW_POOL_H */