Cryptography – Key management – Having particular key generator
Reexamination Certificate
2006-11-07
2006-11-07
Zand, Kambiz (Department: 2132)
Cryptography
Key management
Having particular key generator
C331S078000, C380S044000, C708S250000, C713S191000
Reexamination Certificate
active
07133524
ABSTRACT:
In the key installation system for improving the confidentiality and concealment of the key, a first decrypting circuit decrypts an encrypted key EKEY1(EDK(MK1)) using an encrypted key EDK1(MK1) as the key. A second decrypting circuit decrypts an encrypted key EMK1(KEY1) using the output of the second decrypting circuit, that is, an internal key KEY1as the key. A third decrypting circuit decrypts the encrypted key EDK1(MK1) using the output of the second decrypting circuit, that is, an internal key MK1as the key, to generate a final secret key DK1.
REFERENCES:
patent: 4238853 (1980-12-01), Ehrsam et al.
patent: 4408203 (1983-10-01), Campbell
patent: 4683968 (1987-08-01), Appelbaum et al.
patent: 4918728 (1990-04-01), Matyas et al.
patent: 4924515 (1990-05-01), Matyas et al.
patent: 4941176 (1990-07-01), Matyas et al.
patent: 5142578 (1992-08-01), Matyas et al.
patent: 5796839 (1998-08-01), Ishiguro
patent: 6510519 (2003-01-01), Wasilewski et al.
patent: 6704871 (2004-03-01), Kaplan et al.
patent: 6993137 (2006-01-01), Fransdonk
Fujiwara Makoto
Nemoto Yusuke
Herring Virgil
McDermott Will & Emery LLP
Zand Kambiz
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