DEVICE AND METHOD FOR THE CRYPTOGRAPHIC PROCESSING OF A DIGITAL DATA STREAM PRESENTING ANY NUMBER OF DATA

A digital data stream comprises an arbitrary number of data block (Pn). For a data block, a first processing element (B1n) is provided that contains at least one first logic unit (VK1), an encryption unit (Ek), and a second logic unit (VK2). With the first logic unit (VK1), the respective data packe...

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Bibliographic Details
Main Authors KLASEN, WOLFGANG, EUCHNER, MARTIN
Format Patent
LanguageEnglish
French
German
Published 23.10.2002
Edition7
Subjects
ADVERTISING
CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY
CRYPTOGRAPHY
DISPLAY
EDUCATION
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PHYSICS
SEALS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:A digital data stream comprises an arbitrary number of data block (Pn). For a data block, a first processing element (B1n) is provided that contains at least one first logic unit (VK1), an encryption unit (Ek), and a second logic unit (VK2). With the first logic unit (VK1), the respective data packet (Pn), at least one preceding data packet (Pn-1), and a preceding intermediate quantity (In-1) are combined and are encrypted in the encryption unit (Ek) to form the intermediate quantity (In).The intermediate quantity (In) is combined with a preceding cryptographically processed data block (Cn-l) to form the cryptographically processed data block (Cn).
Bibliography:Application Number: EP19970935421