| 摘要 |
The present invention intends to provide a method of generating document authentication data and authenticating documents by determining whether or not an authenticated document in question is consistent with the original document. The present invention provides an improved method of authenticating a digital or a printed document, capable of verifying the authentication of the document without its original document. The document authentication data are collected, verified, and stored in an authentication center; and the data( such as, page digests) can be retrieved and compared with the data regenerated from the printed document. The improved method of the present invention can greatly reduce the cost, in terms of times and money, of authenticating the contents of printed matters; and improve the safety of document exchanges.
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