Trustworthy timestamps and certifiable clocks using logs linked by cryptographic hashes
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United States of America Patent
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Apr 2, 2013
Grant Date -
Jan 19, 2012
app pub date -
Jul 29, 2011
filing date -
Feb 21, 2007
priority date (Note) -
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Abstract
A method and apparatus for creating and/or using trustworthy timestamps and certifiable clocks using logs linked by cryptographic hashes. In one embodiment, the method comprises maintaining a first, chained-hash log; associating a first clock with the chained-hash log, and entangling the first log; with a second by adding a time-stamped synchronization entry to the chained-hash log, where the synchronization entry has a second time indication associated with the second log and a hash of one or more entries in the first log.
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