Document management with verifiable time-of-archive capability
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United States of America Patent
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Nov 18, 2014
Issued Date -
N/A
app pub date -
Dec 6, 2006
filing date -
Dec 6, 2006
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Abstract
A document archiving and retrieval system enables third parties to verify that an electronic document had been archived on a particular date and time. For each document to be archived, a hash function generates a digital fingerprint of the document, and inserts it into a hash list file, together with an indicator of the location of the file in the archive. The hash list file is submitted to an electronic time stamping authority to obtain a corresponding digital time stamp. Upon request, authentication of the hash list file with the digital time stamp, and verification that the current hash of the file matches that in the hash list file proves that the document was archived on the date indicated by the digital time stamp, and had not subsequently been altered.
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