Rev 22 at 04:20, 21 January 2007

2007-01-21T04:20:47Z

Rev 22: external links from Wikipedia (timestamp article)

2007-01-21T04:17:45Z

external links from Wikipedia (timestamp article)

New page

A '''signed timestamp''' is a [[digital signature|digitally signed]] certificate proving the existence of a certain document at a given time.

The [[hash function|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 [[public key cryptography|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 [[patent]]ing.

See also: [[timestamp]], [[digital signature]].

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=== External links ===
*RFC 3161 Internet X.509 Public Key Infrastructure Time-Stamp Protocol (TSP)
*[http://www.itconsult.co.uk/stamper.htm Free timestamp service (UK based)]
*[http://www.signedtimestamp.org/ Free timestamp service (Netherlands based)]
*[http://www.rsasecurity.com/rsalabs/node.asp?id=2347 RSA Laboratories - What is digital timestamping?]
*[http://citeseer.csail.mit.edu/haber91how.html How to Time-stamp a Digital Document] (1991) Stuart Haber, W. Scott Stornetta, Lecture Notes in Computer Science

[[Category:Cryptography]]
[[Category:Time]]

@@ Line 1: / Line 1: @@
 A '''signed timestamp''' is a [[digital signature|digitally signed]] certificate proving the existence of a certain document at a given time.
-The [[hash function|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 [[public key cryptography|private key]].  The authenticity of the timestamp is ensured by the digital signature.
+The [[hash function|unique hash]] of the document data or the document itself is sent to a trusted third party (timestamping authority) that adds the timestamp and signs it with its [[public key cryptography|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 [[patent]]ing.

signed timestamp - Revision history

Rev 22 at 04:20, 21 January 2007

Rev 22: external links from Wikipedia (timestamp article)