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SRTP Key Exchange Scheme Using Split Transfer of Divided RSA Public Key

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2009, 14(12), pp.147-156
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

채강석 1 Souhwan Jung 1

1숭실대학교

Accredited

ABSTRACT

This paper proposes a SRTP key exchange scheme using split transfer of divided RSA public key in SIP-based VoIP environment without PKI. The existing schemes are hard to apply to real VoIP environment, because they require a PKI and certificates in the end devices. But in case of ZRTP, which is one of existing schemes, it’s able to exchange SRTP Key securely without PKI, but it is inconvenient since it needs user’s involvement. To solve these problems, the proposed scheme will split RSA public key and transmit them to SIP signaling secession and media secession respectively. It can defend effectively possible Man-in-The-Middle attacks, and it is also able to exchange the SRTP key without the user’s involvement. Besides, it meets the requirements for security of SRTP key exchange. Therefore, it’s easy to apply to real VoIP environment that is not available to construct PKI.

Citation status

* References for papers published after 2023 are currently being built.

This paper was written with support from the National Research Foundation of Korea.