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better README.rst (add RFC 3161 presentation)

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kakwa 2016-11-02 19:21:48 +01:00
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@ -28,6 +28,26 @@ License
Released under the MIT Public License
What is RFC 3161?
-----------------
An RFC 3161 time-stamp is basically a cryptographic signature with a date attached.
Roughly, it works as follow:
1. A client application sends an hash of the data it wants to time-stamp to a Time-Stamp authority server.
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 a like a signature).
3. The Time-Stamp authority server return the generated time-stamp to the client application.
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).
It gives a cryptographic proof of a piece of data content, like a file, at a given time.
Some use cases:
* time-stamp log files at rotation time.
* time-stamp file at upload to prove it was delivered in due time or not.
Quick Start
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