Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2011-03-29
2011-03-29
Chai, Longbit (Department: 2431)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S177000, C713S178000, C713S179000, C713S180000, C713S181000, C726S027000, C726S028000, C726S029000, C726S030000
Reexamination Certificate
active
07917763
ABSTRACT:
The present invention relates to a device for detecting a manipulation of an information signal, having an extractor for extracting an information signal component characteristic for the information signal from the information signal, an encryptor for encrypting the information signal component to obtain an encrypted signal, and a comparator for comparing the encrypted signal to a reference signal, wherein the reference signal is an encrypted representation of a non-manipulated reference signal component of a reference information signal to detect the manipulation.
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Aichroth Patrick
Krägeloh Stefan
Kulessa Ralph
Neubauer Christian
Pickel Jörg
Chai Longbit
Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung
Glenn Michael A.
Glenn Patent Group
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