Method and apparatus for secured unified public communication network based on IP and common channel signaling
First Claim
1. A method for setting up a secure channel between at least one subscriber terminal device and a secured private common channel signaling network based on Internet Protocol (IP), comprising the steps of:
- (a) the subscriber terminal devices transmitting encrypted sign-on information in format of IP packets to the signaling network;
(b) the signaling network processing the sign-on information in comparison with information pre-stored in the signaling network database;
(c) the signaling network establishing the identity, privileges, service type, communication parameters, and service right of the subscriber by comparing digital signature of the sign-on information with the information pre-stored in the signaling network database; and
(d) the signaling network establishing a secured link with the subscriber terminal devices.
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Abstract
A method of building a secured unified public network for providing voice, video and data based on Internet Protocol (IP) and secured common channel signaling is disclosed. The network comprises a signaling network for common channel signaling; a data network for video, voice and data; a database for storing and processing digital keys and digital signatures; and the subscriber terminal devices connected to both the signaling network and the data network; The signaling network and database provide sign-on services, key exchange services, digital signature services and call processing services. The encrypted data are transmitted through the data network with shared keys of the caller and called parties.
26 Citations
16 Claims
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1. A method for setting up a secure channel between at least one subscriber terminal device and a secured private common channel signaling network based on Internet Protocol (IP), comprising the steps of:
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(a) the subscriber terminal devices transmitting encrypted sign-on information in format of IP packets to the signaling network;
(b) the signaling network processing the sign-on information in comparison with information pre-stored in the signaling network database;
(c) the signaling network establishing the identity, privileges, service type, communication parameters, and service right of the subscriber by comparing digital signature of the sign-on information with the information pre-stored in the signaling network database; and
(d) the signaling network establishing a secured link with the subscriber terminal devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. The method of setting a secure communication between a caller party and a called party by using public keys, comprising the steps of:
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(a) the caller and called party establishing their identities via the secured private common channel signaling network based on information pre-stored in the signaling network database;
(b) the caller and called party exchanging the public keys with digital signature of the secure common channel signaling network;
(c) each party generating a part of a shared key;
(d) each party encrypting his/her part of the shared key by using the public key of the other party and transmitting it to the other party via the signaling network, whereby the shared key is generated;
(e) each party encrypting voice, video and data by using the shared key and transmitting them to the other party via the data network; and
(f) each party de-encrypting voice, video and data from the other party by using the shared key. - View Dependent Claims (10, 11, 12, 13)
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14. The method of setting communication parameters among three parties:
- a caller party, a called party and a secured private common channel signaling network through a communication parameter option list with priority settings, comprising the steps of;
(a) the caller and called party establishing their identities via the secured private common channel signaling network based on information pre-stored in the signaling network database;
(b) the caller party sending a list of options to the signaling network;
(c) the signaling network checking registered parameters and availability of services of the called party, forwarding a new set of parameters that the network can serve to the called party;
(d) the called party making a final choice on the parameters and returning decision to the caller party via the signaling network; and
(e) the signaling network allocating the corresponding resource if the caller party agree with the decision. - View Dependent Claims (15, 16)
- a caller party, a called party and a secured private common channel signaling network through a communication parameter option list with priority settings, comprising the steps of;
Specification