CA2365856A1 - Key management between a cable telephony adapter and associated signaling controller - Google Patents

Key management between a cable telephony adapter and associated signaling controller Download PDF

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Publication number
CA2365856A1
CA2365856A1 CA002365856A CA2365856A CA2365856A1 CA 2365856 A1 CA2365856 A1 CA 2365856A1 CA 002365856 A CA002365856 A CA 002365856A CA 2365856 A CA2365856 A CA 2365856A CA 2365856 A1 CA2365856 A1 CA 2365856A1
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CA
Canada
Prior art keywords
server
key
endpoint
sub
telephony
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Granted
Application number
CA002365856A
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French (fr)
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CA2365856C (en
Inventor
Sasha Medvinsky
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Motorola Mobility LLC
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Individual
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Publication of CA2365856A1 publication Critical patent/CA2365856A1/en
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Publication of CA2365856C publication Critical patent/CA2365856C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/606—Protecting data by securing the transmission between two devices or processes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H04L63/0435—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H04L63/0442—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
    • H04L63/061—Network architectures or network communication protocols for network security for supporting key management in a packet data network for key exchange, e.g. in peer-to-peer networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
    • H04L63/062—Network architectures or network communication protocols for network security for supporting key management in a packet data network for key distribution, e.g. centrally by trusted party
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0807—Network architectures or network communication protocols for network security for authentication of entities using tickets, e.g. Kerberos
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/12—Applying verification of the received information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0838—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these
    • H04L9/0841—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these involving Diffie-Hellman or related key agreement protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/321—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving a third party or a trusted authority
    • H04L9/3213—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving a third party or a trusted authority using tickets or tokens, e.g. Kerberos
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3263—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving certificates, e.g. public key certificate [PKC] or attribute certificate [AC]; Public key infrastructure [PKI] arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory
    • G06F12/1408—Protection against unauthorised use of memory or access to memory by using cryptography
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/72—Indexing scheme relating to groups G06F7/72 - G06F7/729
    • G06F2207/7219—Countermeasures against side channel or fault attacks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/007—Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
    • G06F2211/008—Public Key, Asymmetric Key, Asymmetric Encryption
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2129—Authenticate client device independently of the user

Abstract

A highly scalable key management architecture for secure client-server syste ms used in IP telephony network, wherein cryptographic state needs to be saved only by the clients. This architecture takes advantage of existing key management protocols, Kerberos with the PKINIT (public key) extension, to provide an IP telephony system having a high degree of scalability. In the case of lost security associations, the architecture provides for lightweigh t rekeying operations that allow clients to quickly re-establish the lost association or switch to a different server. The key management architecture includes a method for establishing a secure channel between an IP telephony endpoint and Server in an IP telephony network. The endpoint is coupled to a user and the Server is coupled to the IP telephony network. The method comprises steps of transmitting from the endpoint to a key distribution cent er a request for a security ticket, receiving the security ticket from the key distribution center, transmitting from the endpoint to the Server a request for a sub-key, receiving the sub-key from the Server, and establishing a secure channel between the endpoint and the Server using the sub-key.</SDOAB >

Claims (4)

1. A method for establishing a secure channel between an IP
telephony endpoint and Server in an IP telephony network, wherein the endpoint is coupled to a user and the Server is coupled to the IP telephony network, the method comprising steps of:

transmitting from the endpoint to a key distribution center a request for a security ticket;

receiving the security ticket from the key distribution center;
transmitting from the endpoint to the Server a request for a sub-key;
receiving the sub-key from the Server; and establishing a secure channel between the endpoint and the Server using the sub-key.
2. The method of claim 1, wherein the endpoint is a cable telephony adapter.
3. The method of claim 1, wherein the server is a Signaling Controller.
4. The method of claim l, wherein the secure channel is an IPSec channel.
CA2365856A 1999-04-09 2000-04-07 Key management between a cable telephony adapter and associated signaling controller Expired - Lifetime CA2365856C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12877299P 1999-04-09 1999-04-09
US60/128,772 1999-04-09
PCT/US2000/009323 WO2000062507A1 (en) 1999-04-09 2000-04-07 Key management between a cable telephony adapter and associated signaling controller

Publications (2)

Publication Number Publication Date
CA2365856A1 true CA2365856A1 (en) 2000-10-19
CA2365856C CA2365856C (en) 2011-11-01

Family

ID=22436900

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2365856A Expired - Lifetime CA2365856C (en) 1999-04-09 2000-04-07 Key management between a cable telephony adapter and associated signaling controller
CA002370471A Abandoned CA2370471A1 (en) 1999-04-09 2000-04-07 Built-in manufacturer's certificates for a cable telephony adapter to provide device and service certification

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002370471A Abandoned CA2370471A1 (en) 1999-04-09 2000-04-07 Built-in manufacturer's certificates for a cable telephony adapter to provide device and service certification

Country Status (9)

Country Link
US (2) US7568223B2 (en)
EP (2) EP1171989A2 (en)
CN (1) CN1127835C (en)
AT (1) ATE313200T1 (en)
AU (2) AU4079200A (en)
CA (2) CA2365856C (en)
DE (1) DE60024800T2 (en)
HK (1) HK1045917B (en)
WO (2) WO2000062519A2 (en)

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Also Published As

Publication number Publication date
EP1169833B1 (en) 2005-12-14
CA2370471A1 (en) 2000-10-19
US20050027985A1 (en) 2005-02-03
WO2000062507A1 (en) 2000-10-19
DE60024800D1 (en) 2006-01-19
WO2000062519A2 (en) 2000-10-19
EP1169833A1 (en) 2002-01-09
US20090323954A1 (en) 2009-12-31
CN1127835C (en) 2003-11-12
AU4079200A (en) 2000-11-14
ATE313200T1 (en) 2005-12-15
US7568223B2 (en) 2009-07-28
CN1346563A (en) 2002-04-24
WO2000062519A3 (en) 2001-02-08
DE60024800T2 (en) 2006-07-06
CA2365856C (en) 2011-11-01
AU4213600A (en) 2000-11-14
US8544077B2 (en) 2013-09-24
EP1171989A2 (en) 2002-01-16
WO2000062519A9 (en) 2002-02-21
HK1045917A1 (en) 2002-12-13
HK1045917B (en) 2004-09-10

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