Add hmac-md5 module.

[gnulib.git] / lib / hmac.h

diff --git a/lib/hmac.h b/lib/hmac.h
new file mode 100644 (file)
index 0000000..444213e
--- /dev/null
+++ b/lib/hmac.h
@@ -0,0 +1,33 @@
+/* hmac.h -- hashed message authentication codes
+   Copyright (C) 2005 Free Software Foundation, Inc.
+
+   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, 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+/* Written by Simon Josefsson.  */
+
+#ifndef HMAC_H
+# define HMAC_H 1
+
+#include <stddef.h>
+
+/* Compute Hashed Message Authentication Code with MD5, as described
+   in RFC 2104, over BUFFER data of BUFLEN bytes using the KEY of
+   KEYLEN bytes, writing the output to pre-allocated 16 byte minimum
+   RESBUF buffer.  Return 0 on success.  */
+int
+hmac_md5 (const void *key, size_t keylen,
+         const void *buffer, size_t buflen, void *resbuf);
+
+#endif /* HMAC_H */