Secure channel establishment in disadvantaged networks : TLS optimization using intercepting proxies
Name
702656427-MIT.pdf
Description
Full printable version
Size
5.11 MB
Format
Adobe PDF
Checksum (MD5)
34c84d1f7b56a145baf8c0c1411f6e95
Author(s)
McVeety, Sam
Advisor(s)
Roger Khazan and Joe Cooley.
Date Issued
2009
Publisher
Massachusetts Institute of Technology
Abstract
Transport Layer Security (TLS) is a secure communication protocol that is used in many secure electronic applications. In order to establish a TLS connection, a client and server engage in a handshake, which usually involves the transmission of digital certificates. In this thesis we develop a practical speedup of TLS handshakes over bandwidth-constrained, high-latency (i.e. disadvantaged) links by reducing the communication overhead associated with the transmission of digital certificates. This speedup is achieved by deploying two specialized TLS proxies across such links. Working in tandem, one proxy will replace certificate data in packets being sent across the disadvantaged link with a short reference, while the proxy on the other side of the link will restore the certificate data in the packet. The certificate data will be supplied by local or remote caches. Our solution preserves the end-to-end security of TLS and is designed to be transparent to third-party applications, and will thus facilitate rapid deployment by removing the need to modify existing installations of TLS clients and TLS servers. Testing shows that this technique can reduce the overall bandwidth used during a handshake by over 50%, and can reduce the time required to establish a secure channel by over 40% across Iridium links.
Description
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2009.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 65-66).
Subjects
Electrical Engineering and Computer Science.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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