Cryptography – Communication system using cryptography – Symmetric key cryptography
Reexamination Certificate
2011-03-01
2011-03-01
Pich, Ponnoreay (Department: 2435)
Cryptography
Communication system using cryptography
Symmetric key cryptography
C713S168000, C713S169000, C380S255000, C380S264000
Reexamination Certificate
active
07899183
ABSTRACT:
A sender's encrypted communication apparatus and a recipient's encrypted communication apparatus autonomously generate keys for encryption with respective key generators, store the generated encryption keys in respective encryption key memories, and store part of the generated encryption keys in respective authentication memories. The keys stored in the authentication memories are used for mutual authentication when the sender's encrypted communication apparatus and a recipient's encrypted communication apparatus are connected to each other.
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Lo et al, “Unconditional Security of Quantum Key Distribution over Arbitrarily Long Distances”, Science Magazine, vol. 283 No. 5410, pp. 2050-2056, printed from http://www.sciencemag.org/cgi/content/full/sci;283/5410/2050 on Sep. 4, 2008.
Suzuki Shuji
Tajima Akio
NEC Corporation
Pich Ponnoreay
Sughrue & Mion, PLLC
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