start documentation

+LIBTRHASH
+=========
+
+This bundles some useful hashing and encoding functions.
+Part of this comes from taskrambler, other are added later.
+
+Currently it contains code to create an sha1 hash, Uuids Version 1, 3 and
+5 and code to hexencode or decode in a charset independent way.
+The idea for this is taken from the base64 code in the linux
+core utils.
+
+### Hashing: sha1 md5 ###
+
+When OpenSSL is available it is used for sha1 or md5 creation because
+it is really hard to outperform it. Anyway, if for some reason
+OpenSSL is not available I have alternative code in place here.
+
+The C implementation without SSE intrisics is created by myself.
+The vectorized SSE intrisics code is public domain and from
+[this page](http://arctic.org/~dean/crypto/sha1.html).
+
+On my system the implementation without intrisics is 4 times
+slower than the OpenSSL code whereas the intrisics code is just
+marginally slower.
+
+In future I will add own md5 code to make this library independet
+from OpenSSL if needed.
+
+### Uuid ###
+
+This is just an addon on to the utils-linux implementation of
+DCE uuid's done by Theodore Y. Ts'o. It wraps uuids in my class system
+right now and adds version 3 and version 5 uuid.
+
+Anyway, this will only work on linux as it's build around the util-linux
+code.
+
+### encoding ###
+
+Currently this contains code hexencode and hexdecode data in a
+charset independent way. As a special case of hexdecoding a
+urldecode function is also available.
+
+In the near future code to urlencode and base64 encode and decode
+code will be added.
+
+INSTALLATION
+------------
+
+This can be installed via the usual configure, make, make install
+cycle. For gentoo users am ebuild is added under docs.
+
+### API DOC ###
+
+To generate the api doc a patched version of doxygen is
+neccessary. A patch is included under docs.
+
+`make docs` creates the api doc.
+
+USAGE
+-----
+
+### API ###
+
+### EXAMPLE ###
+
+TESTING
+-------
+
+No tests right now... sorry.
+
+### REQUIREMENTS
+
+CONTRIBUTION
+------------
+
+I would really like to see some people possibly interested in this stuff.
+I think it contains some really interesting ideas.
+
+If you like to contribute anyway, make a fork, do your changes and generate
+a pull request. Or simply contact me on georg@steffers.org.