Method and system for remote printing of duplication resistent documents

A communication link is provided between a certified document owner and a remote printing station. The printing station is provided with a leaf of special paper and determines whether the leaf is legitimate by comparing a representative number and its encrypted version (encrypted using a first key)...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PATRICK D HOWARD, CHARLES PHILIPPE LOUIS TRESSER, PASUMARTI VENKATA KAMESAM, GORDON WESLEY BRAUDAWAY, CHAI WAH WU, SEAN WILLIAM SMITH, FREDERICK COLE MINTZER, HOWARD EDWARD SACHAR, JOHN MARK SOCOLOFSKY
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A communication link is provided between a certified document owner and a remote printing station. The printing station is provided with a leaf of special paper and determines whether the leaf is legitimate by comparing a representative number and its encrypted version (encrypted using a first key) at locations on the leaf Extra hidden data may also be provided on the leaf for checking its authenticity. The printing station transmits the representative number and its encrypted version to the certified document owner who can also perform the authenticity check. The certified document owner appends a document with the representative number, computes a digitally signed version of the appended document (using a second key) and transmits the document and the signed version to the printing station for printing. As such, further unauthorised prints of this document as well as copies of this document can be recognized as non-authentic. The printer used does not need to be specialised with security controls.