Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2002-09-12
2009-12-15
Truong, Thanhnga B (Department: 2438)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S177000, C455S412100, C455S412200, C455S415000, C379S142040
Reexamination Certificate
active
07634656
ABSTRACT:
A voice call system and a method and apparatus for identifying a voice caller are disclosed. The system includes a call originator apparatus10and a called party apparatus20. At least one trusted user identity is formed at the call originator apparatus10, ideally in a trusted platform module12configured according to a Trusted Computing Platform Alliance (TCPA) specification. The called party apparatus20checks the trusted user identity when establishing a new voice call. Advantageously, an identity of the voice caller using the call originator apparatus is confirmed in a reliable and trustworthy manner, even when the voice call is transported over an inherently insecure medium, e.g. an open computing system like the internet30. Preferred embodiments of the invention use IP telephony, such as SIP (session initiation protocol) or H.323 standard voice telephony.
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Hewlett--Packard Development Company, L.P.
Truong Thanhnga B
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