Cryptography – Cellular telephone cryptographic authentication
Reexamination Certificate
2006-04-25
2006-04-25
Jung, David (Department: 2134)
Cryptography
Cellular telephone cryptographic authentication
C380S258000, C726S004000
Reexamination Certificate
active
07035410
ABSTRACT:
The broadband telephony interface is provisioned by receiving information authenticating a provisioning server, establishing a communication channel between the user and the provisioning server over which is transmitted authorization information from the user to the provisioning server, and encrypting and transmitting a cryptographic key associated with the user to the provisioning server. The cryptographic key can be a symmetric key or a public key corresponding to a private key stored in the broadband telephony interface. The cryptographic key can be utilized to generate other keys which are utilized to secure communication channels for the telephony service. The broadband telephony interface advantageously can be implemented as untrusted hardware or software that is installed by a customer.
REFERENCES:
patent: 5153919 (1992-10-01), Reeds et al.
patent: 5216715 (1993-06-01), Markowitz
patent: 5349642 (1994-09-01), Kingdon
patent: 5657390 (1997-08-01), Elgamal et al.
patent: 5689566 (1997-11-01), Nguyen
patent: 5748740 (1998-05-01), Curry et al.
patent: 5805702 (1998-09-01), Curry et al.
patent: 5812955 (1998-09-01), Dent et al.
patent: 5970144 (1999-10-01), Chan et al.
patent: 6094485 (2000-07-01), Weinstein et al.
patent: 6105013 (2000-08-01), Curry et al.
patent: 6675216 (2004-01-01), Quatrano et al.
patent: 6681327 (2004-01-01), Jardin
patent: 4416595 (1995-11-01), None
patent: 19521484 (1996-12-01), None
patent: 2709903 (1995-03-01), None
SIP security issues: the SIP authentication procedure and its processing load; Salsano; S.; Veltri, L.; Papalilo, D.; Network, IEEE vol. 16, Issue 6, Nov.-Dec. 2002 Page(s):38-44.
Stream authentication scheme for the use over the IP telephony; Ueda, S.; Kawaguchi, N.; Shigeno, H.; Okada, K.; Advanced Information Networking and Applications, 2004. AINA 2004. 18th International Conference on vol. 2, 2004 Page(s):164-169 vol. 2.
A testbed for experimentation of innovative services in the B3G framework; Fresa et al.; Testbeds and Research Infrastructures for the Development of Networks and Communities, 2005. First International Conference on Feb. 23-25, 2005 Page(s)2005. Tridentcom.
Claasen, G J et al: “Secure Communicatin Procedure for ISDN”, Proceedings Southern African Conference on Communications and Signal Processing, US, IEEE,New York, NY, Jun. 24, 1988, pp. 165-170 cited as a document defining the general state of the art which is not considered to be a particular relevance in PCT International Search Report dated Oct. 06, 2000 regarding PCT International Application No. PCT/US 00/05520.
PCT International Search Report dated Oct. 06, 2000 regarding PCT International Application No. PCT/US 00/05520.
PCT Examination Report dated Jun. 12, 2001, regarding PCT International Application No. PCT/US00/05220.
Aiello William A.
Bellovin Steven Michael
Kalmanek Jr. Charles Robert
Marshall William Todd
Rubin Aviel D.
AT&T Corp.
Jung David
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