Lawful Interception Scheme for Secure VoIP Communications Using TTP

Yoon, Seokung; Jeong, Jena; Jeong, Hyun–Cheol; Won, Yoojae

doi:10.1109/csa.2008.31

Cited by 2 publications

(5 citation statements)

References 8 publications

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“…Compared with 12, 13, BSG supports the secure session monitoring. Although the literature 14 also supports the secure session, UAs must support the secure session, too. In other words, BSG can monitor the secure sessions regardless of whether the callee supports the secure session.…”

Section: Methodsmentioning

confidence: 99%

“…Interceptions based on SIP were discussed in 13, 14. In 13, the authors suggested the VoIP service provider's network to be the right place for interception.…”

Section: Related Workmentioning

confidence: 99%

“…The latter takes responsibility for signal, data mapping and configuration functions, signal and data storages and analysis. In 14, an LI scheme using TTP (trusted third party) was proposed. When the LEA asks for interception, it sends the request to the telecommunication service provider (TSP).…”

Section: Related Workmentioning

confidence: 99%

“…Furthermore, LI is performed while receiving the session key from TTP. The studies in 13, 14 were focused on the VoIP service provider in charge of provision of the information about subscribers when interception is being performed. Although the secure session is supported in 14, the adoption of this scheme requires the UAs to ask for the master key from the TTP.…”

Section: Related Workmentioning

confidence: 99%

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VoIP secure session assistance and call monitoring via building security gateway

Kao

Tzeng

2010

Int J Communication

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SUMMARYA secure architecture is proposed in the home/office networking environment with a special appliance, called Building Security Gateway (BSG), for cheap SIP devices and unsupported soft user agents (UAs) performing security functions successfully, such as construction of secure sessions and encrypting/decrypting media. Therefore, we apply BSG procedure to VoIP for getting secure session. Furthermore, VoIP call monitoring and intercepting functions are also implemented in BSG. Secure session monitoring is supported in this architecture. A prototype BSG is built in a home/office network, and BSG-based session mobility cases between UAs are examined and the protocol primitives for security and call intercepting are verified.

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Section: Methodsmentioning

confidence: 99%

“…Interceptions based on SIP were discussed in 13, 14. In 13, the authors suggested the VoIP service provider's network to be the right place for interception.…”

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

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VoIP secure session assistance and call monitoring via building security gateway

Kao

Tzeng

2010

Int J Communication

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“…Paper [6] combined Strong Signal Masking (antiinterception technology) with Orthogonal Frequency Division Multiplexing (method of data transmission) and antiintercepting transmission scheme in physical layer is taken as the research direction. In article [7] proposes lawful interception scheme for secure VoIP (Voice over IP) communications using TTP (Trusted Third Party). This scheme enables to do lawful interception and restrict the ability of law enforcement agency because the session key only validates during one session.…”

Section: Introductionmentioning

confidence: 99%

Determination of signal level for protection of information in case of its interception by technical means of intelligence

Pavlenko

2023

TAPR

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The object of the current paper is the protection of information in the conditions of its interception by technical means of intelligence. According to this goal, considered the existing mathematical model of signal interception using radio-technical intelligence. In course of investigation, for getting final results based existing mathematical model analyzed the optimal scheme of signal detection with the help of intelligence receiver. As a result of this activity occurs four potential cases of signal detection which compared with established threshold H and accompanied by one of two error types: incorrect decision about the signal absence or incorrect indication of its presence. On the basis of the given cases suggested one of the possible variant for protecting of signal that goes beyond the controlled zone. Using such dependencies as: an expression of the power flux density of radio electronic device antenna on its distance to the receiver in the direction of maximum radiation, the formula of signal power at the input of the receiving antenna, the ratio of the antennas coefficient of amplification and its effective scattering area was obtained: the dependence for calculating the power of output signal sufficient for reception within the controlled zone, but insufficient for its interception by technical means beyond its borders. Also, obtained graphical dependencies of minimal coefficient of amplification of transmitter antenna from maximal coefficient of amplification of transmitter antenna, from wavelength of radiation and from distance between transmitter and receiver. Based on research results formed the conclusion regarding proposed method of information protection based on the mathematical model of the information leakage channel applying for radio intelligence.

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Lawful Interception Scheme for Secure VoIP Communications Using TTP

Cited by 2 publications

References 8 publications

VoIP secure session assistance and call monitoring via building security gateway

VoIP secure session assistance and call monitoring via building security gateway

Determination of signal level for protection of information in case of its interception by technical means of intelligence

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