Secure authenticated channel

Details Secure authenticated channel Secure authenticated channel

2004-10-29

2009-06-09

Tran, Tongoc (Department: 2434)

Cryptography

Key management

Having particular key generator

C380S028000, C380S030000, C380S045000, C380S277000, C713S156000, C713S168000, C713S176000, C713S182000

Reexamination Certificate

active

07545932

ABSTRACT:
A protocol (i.e. method) and corresponding apparatuses for calculating a session key. Two peers with knowledge of a common Diffie-Hellman permanent key, Kperm, and the identity and public key of the other peer. A first peer chooses a first ephemeral private key x and calculates the first corresponding ephemeral public key gx, which is sent to the second peer. The second peer calculates a second ephemeral public key gyin the same manner, and an ephemeral shared key Keph, hashes gy, Keph, Kperm, and its identity, and sends gyand the hash to the first peer. The first peer calculates Keph, verifies the hash, and hashes gx, Keph, Kperm, and its identity, and sends it to the second peer that verifies this hash. Thereafter, both peers obtain a session key by hashing Keph. The apparatuses may then use the session key to establish a secure authenticated channel (SAC).

REFERENCES:
patent: 4200770 (1980-04-01), Hellman et al.
patent: 4424414 (1984-01-01), Hellman et al.
patent: 4956863 (1990-09-01), Goss
patent: 5115467 (1992-05-01), Esserman et al.
patent: 5199070 (1993-03-01), Matsuzaki et al.
patent: 5299263 (1994-03-01), Beller et al.
patent: 5345506 (1994-09-01), Tsubakiyama et al.
patent: 5406628 (1995-04-01), Beller et al.
patent: 5515439 (1996-05-01), Bantz et al.
patent: 5668877 (1997-09-01), Aziz
patent: 5889865 (1999-03-01), Vanstone et al.
patent: 5953420 (1999-09-01), Matyas et al.
patent: 2002/0057796 (2002-05-01), Lambert et al.
patent: 2004/0081321 (2004-04-01), Struik
patent: WO 00/01109 (2000-01-01), None
Diffie Hellman, American National Standard x9.42—1996 Public Key Cryptobraphy for The Financial Services Industry: Agreement of Symmetric Algorithm Keys Using Diffie-Hellman, Sep. 1996.
W. Diffie & M.E. Hellman, “New Directions in Cryptograph” IEEE Transactions on Information Theory, vol. IT-22, No. 6, Nov. 1976, pp. 644-654.

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