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2. Benson et al., Portable security transaction protocol, US Patent Application, 15559-20.
3. RFC 2246, June 2003, T. Dierks, E. Rescorla, The TLS Protocol.
4. J. Dray, D. Balenson, An overview of the advanced smartcard access control system (ASACS), in: Proceedings of the PSRG Workshop on Network and Distributed System Security, February 1993, pp. 125–133.
5. http://en.wikipedia.org/wiki/Dongle.