Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
1999-12-15
2008-10-07
Sheikh, Ayaz (Department: 2131)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S160000, C713S161000, C380S045000, C380S260000, C380S261000, C380S284000
Reexamination Certificate
active
07434052
ABSTRACT:
In a method for producing an encrypted method payload data stream comprising a header and a block containing encrypted payload data, a payload data key for a payload data encryption algorithm for encrypting payload data is generated. The payload data is encrypted using the generated payload data key and the payload data encryption algorithm to obtain the block containing the encrypted payload data of the payload stream. A part of the payload data stream is processed to deduce information marking the part of the payload data stream. The information is linked with the payload data by means of an invertible logic linkage to obtain a basic value. This basic value is finally encrypted using a key of two keys being different from each other by an asymmetrical encryption method, the two different keys being the public and the private keys respectively for the asymmetrical encryption method to obtain an output value being an encrypted version of the payload data key. The output value is finally entered into the header to complete the payload stream. Changes of the header and of the payload data itself, which are not authorized, lead to an automatic destruction of the payload data.
REFERENCES:
patent: 4899333 (1990-02-01), Roediger
patent: 4965825 (1990-10-01), Harvey et al.
patent: 5159633 (1992-10-01), Nakamura
patent: 5200999 (1993-04-01), Matyas et al.
patent: 5315635 (1994-05-01), Kane et al.
patent: 5710814 (1998-01-01), Klemba et al.
patent: 5712914 (1998-01-01), Aucsmith et al.
patent: 5805700 (1998-09-01), Nardone et al.
patent: 5850443 (1998-12-01), Van Oorschot et al.
patent: 5974144 (1999-10-01), Brandman
patent: 6148404 (2000-11-01), Yatsukawa
patent: 6175626 (2001-01-01), Aucsmith et al.
patent: 6198875 (2001-03-01), Edenson et al.
patent: 6526509 (2003-02-01), Horn et al.
patent: 6738907 (2004-05-01), Carter
patent: 6892306 (2005-05-01), En-Seung et al.
patent: 7117361 (2006-10-01), Hild et al.
patent: 7127612 (2006-10-01), Ishibashi
patent: 7159126 (2007-01-01), Kang et al.
patent: 7218736 (2007-05-01), Nishimura et al.
patent: 7239709 (2007-07-01), Yamada et al.
patent: 196 25 635 (1997-12-01), None
patent: 0 438 154 (1991-07-01), None
patent: 0833241 (1998-04-01), None
patent: WO 96/27155 (1996-09-01), None
Schneier, Bruce “Applied Cryptography Second Edition” John Wiley and Sons, pp. 30-31 and 53-54.
Bruch Schneier, “Applied Cryptography—Protocols, Algorithms, and Source Code in C,” 2nd ed., John Wiley & Sons, Inc. (1996).
A Capsulated Content Providing Services Adaptable for Users; Huma Media Res.Labs.; NEC Corporation.
Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung
Glenn Michael A.
Glenn Patent Group
Henning Matthew T.
Sheikh Ayaz
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