METHOD FOR PREPARING CIPHER ENVELOPE

PROBLEM TO BE SOLVED: To obtain a method for preparing, distributing, and vending a digital document, and a method for managing access to the digital document by providing a step for enciphering one of information parts by a part enciphering key, and preparing an enciphered part to be housed in an e...

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Bibliographische Detailangaben
Hauptverfasser:	CHOW CHEE-SENG, KAPLAN MARC ADAM, AUERBACH JOSHUA SETH, CRIGLER JEFFREY CHARLES
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING CALCULATING CHECKING-DEVICES CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY COIN-FREED OR LIKE APPARATUS COMPUTING COUNTING CRYPTOGRAPHY DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS SEALS SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a method for preparing, distributing, and vending a digital document, and a method for managing access to the digital document by providing a step for enciphering one of information parts by a part enciphering key, and preparing an enciphered part to be housed in an envelope. SOLUTION: A document part 203 can be enciphered. The enciphered document part 203 can be a 'valuable content' (for example, the chapter of a book, high resolution JPEG picture, or MPEG stream) to be purchased by a user. A non-enciphered part is a 'thesis' (for example, a book review by the others, index, summarization, or low resolution JPEG picture). The purpose of the non-enciphered part is to allow the user to attain the 'preview', 'sampling' or 'browse' of the content of the enciphered envelope before actually purchasing it.