The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 06, 2004
Filed:
Mar. 07, 2000
Peter Windirsch, Dreieich, DE;
Deutsche Telekom AG, Bonn, DE;
Abstract
The invention relates to a device for implementing a block-ciphering process using an encryption/decryption arithmetic-logic module ( ) which is supplied with the data stream of word length j≦n to be ciphered. The invention is characterized in that the arithmetic-logic module ( ) includes a plurality of encryption/decryption elements ( ), each of which forms a stage of a computing pipeline, the stages being designed such that they operate independently of each other in different modes of operation and with different keys. Supported by further components and data paths surrounding the encryption/decryption arithmetic-logic module ( ), the invention allows up to p data streams, each with independently selectable word lengths j≦n and modes of operation, to be encrypted or decrypted simultaneously. In addition, the architecture of the device permits different logical data streams to be processed directly consecutively and free of conflict on the physical channels provided by the hardware resources.