mirror of
https://github.com/kakwa/uts-server
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83 lines
2.8 KiB
ReStructuredText
83 lines
2.8 KiB
ReStructuredText
uts-server
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.. image:: https://github.com/kakwa/uts-server/blob/master/docs/assets/logo_64.png?raw=true
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.. image:: https://travis-ci.org/kakwa/uts-server.svg?branch=master
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:target: https://travis-ci.org/kakwa/uts-server
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.. image:: https://readthedocs.org/projects/uts-server/badge/?version=latest
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:target: http://uts-server.readthedocs.org/en/latest/?badge=latest
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:alt: Documentation Status
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Micro `RFC 3161 Time-Stamp <https://www.ietf.org/rfc/rfc3161.txt>`_ server written in C.
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----
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:Doc: `Uts-Server documentation on ReadTheDoc <http://uts-server.readthedocs.org/en/latest/>`_
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:Dev: `Uts-Server source code on GitHub <https://github.com/kakwa/uts-server>`_
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:License: MIT
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:Author: Pierre-Francois Carpentier - copyright © 2016
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----
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License
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-------
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Released under the MIT Public License
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What is RFC 3161?
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-----------------
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An RFC 3161 time-stamp is basically a cryptographic signature with a date attached.
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Roughly, it works as follow:
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1. A client application sends an hash of the data it wants to time-stamp to a Time-Stamp authority server.
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2. The Time-Stamp authority server retrieves the current date, concatenates it with the hash and uses its private key to create the time-stamp (kind of like a signature).
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3. The Time-Stamp authority server returns the generated time-stamp to the client application.
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Then a client can verify the piece of data with the time-stamp using the Certificate Authority of the time-stamp key pair (X509 certificates).
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It gives a cryptographic proof of a piece of data content, like a file, at a given time.
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Some use cases:
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* time-stamp log files at rotation time.
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* time-stamp file at upload to prove it was delivered in due time or not.
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Quick Start
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-----------
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.. sourcecode:: bash
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# Building with civetweb embedded (will recover civetweb from github).
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$ cmake . -DBUNDLE_CIVETWEB=ON
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$ make
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# Create some test certificates.
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$ ./tests/cfg/pki/create_tsa_certs
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# Launching the time-stamp server with test configuration in debug mode.
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$ ./uts-server -c tests/cfg/uts-server.cnf -D
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# In another shell, launching a time-stamp script on the README.md file.
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$ ./goodies/timestamp-file.sh -i README.rst -u http://localhost:2020 -r -O "-cert";
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# Verify the time-stamp.
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$ openssl ts -verify -in README.rst.tsr -data README.rst -CAfile ./tests/cfg/pki/tsaca.pem
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# Display the time-stamp content.
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$ openssl ts -reply -in README.rst.tsr -text
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Powered by
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----------
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.. image:: https://raw.githubusercontent.com/openssl/web/master/img/openssl-64.png
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:target: https://www.openssl.org/
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.. image:: https://github.com/civetweb/civetweb/blob/658c8d48b3bcdb34338dae1b83167a8d7836e356/resources/civetweb_32x32@2.png?raw=true
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:target: https://github.com/civetweb/civetweb
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