This is a message digest library for Lua 5.1. It is based on the digest routines
provided by OpenSSL. The library can be built to compute the following digests:
md2, md4, md5, sha1, sha224, sha256, sha384, sha512, ripemd160, mdc2.
For more information on these digests, see
	http://en.wikipedia.org/wiki/MD2_(cryptography)
	http://en.wikipedia.org/wiki/MD4
	http://en.wikipedia.org/wiki/MD5
	http://en.wikipedia.org/wiki/SHA_hash_functions
	http://en.wikipedia.org/wiki/RIPEMD-160
	http://en.wikipedia.org/wiki/MDC2
	http://en.wikipedia.org/wiki/Message_digest

OpenSSL is available at
	http://www.openssl.org/
If you're running Unix, you probably already have OpenSSL installed.

If you have trouble finding C source code for MD5 or SHA1 digests that
does not depend on OpenSSL, please send me a note.

To try the library, edit Makefile to reflect your installation of Lua and
then run make. This will build the library and run a simple test.
For detailed installation instructions, see
	http://www.tecgraf.puc-rio.br/~lhf/ftp/lua/install.html

There is no manual but the library is simple and intuitive; see the summary
below. Read also test.lua, which shows the library in action.

This code is hereby placed in the public domain.
Please send comments, suggestions, and bug reports to [email protected] .

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digest library:
 __tostring(c) 		 new() 			 version 
 clone(c) 		 reset(c) 
 digest(c or s,[raw]) 	 update(c,s) 

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