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signed timestamp
From Anarchopedia
Revision as of 04:17, 21 January 2007 by Rev 22 (Talk | contribs) (external links from Wikipedia (timestamp article))
A signed timestamp is a digitally signed certificate proving the existence of a certain document at a given time.
The unique hash of the document data or the document itself is sent to a trusted third party (timestamping authority) that sends it back signing it with its private key. The authenticity of the timestamp is ensured by the digital signature.
Signed timestamps can be used to prove authorship and to protect original ideas from abusive patenting.
See also: timestamp, digital signature.
External links
- RFC 3161 Internet X.509 Public Key Infrastructure Time-Stamp Protocol (TSP)
- Free timestamp service (UK based)
- Free timestamp service (Netherlands based)
- RSA Laboratories - What is digital timestamping?
- How to Time-stamp a Digital Document (1991) Stuart Haber, W. Scott Stornetta, Lecture Notes in Computer Science
