Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
1999-09-23
2009-06-30
Dada, Beemnet W (Department: 2435)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C382S100000
Reexamination Certificate
active
07555649
ABSTRACT:
Verification of true authorship on the basis of digital watermarks is described. The digital watermark can be provided with the proof of identity id and/or with the hash value h(m) of the document and/or with a time value t.
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Schwenk Joerg
Toensing Friedrich
Dada Beemnet W
Deutsche Telekom AG
Kenyon & Kenyon LLP
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