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authordimitri staessens <dimitri.staessens@ugent.be>2017-04-16 09:42:13 +0200
committerdimitri staessens <dimitri.staessens@ugent.be>2017-04-16 13:40:12 +0200
commitbc651653d50145a8ca3a09b7b1146bf3089ccf47 (patch)
treeb4c16263531b1b802fb867f3d26bf0fcb173fe28 /include
parentffc4468030398955ec56dac17934b43adfeab68b (diff)
downloadouroboros-bc651653d50145a8ca3a09b7b1146bf3089ccf47.tar.gz
ouroboros-bc651653d50145a8ca3a09b7b1146bf3089ccf47.zip
lib: Add implementation for MD5 hashes
Diffstat (limited to 'include')
-rw-r--r--include/ouroboros/hash.h5
-rw-r--r--include/ouroboros/md5.h72
2 files changed, 75 insertions, 2 deletions
diff --git a/include/ouroboros/hash.h b/include/ouroboros/hash.h
index 4779a9a6..a94b37ee 100644
--- a/include/ouroboros/hash.h
+++ b/include/ouroboros/hash.h
@@ -24,11 +24,12 @@
#ifndef OUROBOROS_LIB_HASH_H
#define OUROBOROS_LIB_HASH_H
-#include <ouroboros/sha3.h>
#include <ouroboros/crc32.h>
+#include <ouroboros/md5.h>
+#include <ouroboros/sha3.h>
#define HASH_FMT "%02x%02x%02x%02x"
-#define HASH_VAL(hash) \
+#define HASH_VAL(hash) \
((*(unsigned int *) hash) & 0xFF000000) >> 24, \
((*(unsigned int *) hash) & 0x00FF0000) >> 16, \
((*(unsigned int *) hash) & 0x0000FF00) >> 8, \
diff --git a/include/ouroboros/md5.h b/include/ouroboros/md5.h
new file mode 100644
index 00000000..a628e6cb
--- /dev/null
+++ b/include/ouroboros/md5.h
@@ -0,0 +1,72 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * MD5 algorithm
+ *
+ * Dimitri Staessens <dimitri.staessens@ugent.be>
+ * Sander Vrijders <sander.vrijders@ugent.be>
+ *
+ * This implementation is adapted and redistributed from the RHASH
+ * project implementation of the MD5 algorithm
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * version 2.1 as published by the Free Software Foundation.
+ *
+ * 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
+ *
+ * -- original license
+ *
+ * md5.c - an implementation of the MD5 algorithm, based on RFC 1321.
+ *
+ * Copyright: 2007-2012 Aleksey Kravchenko <rhash.admin@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so.
+ *
+ * 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. Use this program at your own risk!
+ */
+
+#ifndef OUROBOROS_LIB_MD5_H
+#define OUROBOROS_LIB_MD5_H
+
+#include "unistd.h"
+#include <stdint.h>
+
+#define MD5_BLOCK_SIZE 64
+#define MD5_HASH_LEN 16
+
+struct md5_ctx
+{
+ /* 512-bit buffer for leftovers */
+ uint32_t message[MD5_BLOCK_SIZE / 4];
+ /* number of processed bytes */
+ uint64_t length;
+ /* 128-bit algorithm internal hashing state */
+ uint32_t hash[4];
+};
+
+void rhash_md5_init(struct md5_ctx *ctx);
+
+void rhash_md5_update(struct md5_ctx * ctx,
+ const void * msg,
+ size_t size);
+
+void rhash_md5_final(struct md5_ctx * ctx,
+ uint8_t * result);
+
+#endif /* OUROBOROS_LIB_MD5_H */