[Busec] Fwd: TALK: Wednesday 11-29-2017 A Universally Composable Treatment of Network Time.

Mayank Varia varia at bu.edu
Mon Nov 27 11:48:54 EST 2017

Hi everyone,

In addition to Tarik's BUsec seminar on Wednesday morning, our own Aanchal
will speak at the MIT security seminar on Wednesday afternoon. Details
below; hope to see you there!



A Universally Composable Treatment of Network Time.
Seminar Series: CSAIL Security Seminar 2017/2018
Speaker: Aanchal Malhotra
Speaker Affiliation: Boston University
Host: CSAIL Security Seminar

Date: Wednesday, November 29, 2017
Time:  4:00 PM to 5:00 PM

Location: D463 (Star)

Title: A Universally Composable Treatment of Network Time.

The security of almost any real-world distributed system today depends on
the participants having some "reasonably accurate'' sense of current real
time.  Indeed, to name one example, the very authenticity of practically
any communication on the Internet today hinges on the ability of the
parties to accurately detect revocation of certificates, or expiration of
passwords or shared keys. However, as recent attacks show, the standard
protocols for determining time are subvertible, resulting in wide-spread
security loss. Worse yet, we do not have security notions for network time
protocols that (a) can be rigorously asserted and (b) rigorously guarantee
security of applications that require a sense of real time.
In this talk I will:
    - Describe new notions of security for time sync protocols within
Universally Composable (UC) security framework
    - Show that these notions suffice for protocols that need real time and
Prove security of protocols that realize these notions

joint work with Ran Canetti, Kyle Hogan and Mayank Varia.

Speaker Bio: Aanchal Malhotra is a Ph.D student at Boston University and is
part of the BU Security Group. Her research uses cryptography, and the
insights gained from network measurement and simulations to improve the
security and reliability of core Internet protocols like BGP, DNS, and NTP.
She received her M.S. from Boston University in 2014, and has worked as a
researcher at Cisco, Akamai, and NLNet Labs, Netherlands. She is an active
member of working groups at the Internet Engineering Task Force (IETF).
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