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UID:133@lincs.fr
DTSTART;TZID=Europe/Paris:20140625T150000
DTEND;TZID=Europe/Paris:20140625T160000
DTSTAMP:20170313T171224Z
URL:https://www.lincs.fr/events/randomness-everlasting-security-undetectab
 ility/
SUMMARY:Randomness\, Everlasting Security\, and Undetectability
DESCRIPTION:Security and privacy are fundamental concerns in today's world.
 These concerns have become particularly prominent with Snowden's
 revelationsof the presence of the NSA in our daily lives. These revelations
 have shown that traditional cryptographic techniques do not provide as was
 expected. This has called into question how security and privacy can be
 provided. In this talk we investigate how randomness in the environment can
 be used to provide everlasting security and undetectability(privacy) in
 wireless communications. In the first part of the talk we describe a
 practical way to harness this randomness to provide and improve the
 security of wireless communications. We introduce the notion of "dynamic
 secrets"\, information shared by two parties\, Alice and Bob\, engaged in
 communication and not available to an adversary\, Eve. The basic idea is to
 dynamically generate a series of secrets from randomness present in the in
 wireless environment. These dynamic secrets exhibit interesting security
 properties and offer a robust alternative to cryptographic security
 protocols. We present a simple algorithm for generating these secrets and
 using them to ensure secrecy.In some situations\, Alice and Bob may want
 not only to secure their communications but to keep it private. In the
 second part of our talk we focus on the use of randomness to conceal the
 communications. Here the challenge is for Alice to communicate with Bob
 without an adversary\, Willie the warden\, ever realizing that the
 communication is taking place. Specifically\, we establish that Alice can
 send O(t) bits (and no more) to Bob in time t over a variety of wireless
 and optical channels. Moreover\, we report experimental results that
 corroborate the theory.
CATEGORIES:Seminars,Youtube
LOCATION:LINCS Meeting Room 40\, 23\, avenue d'Italie\, Paris\, 75013\,
 France
GEO:48.8283983;2.3568972000000485
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=23\, avenue d'Italie\,
 Paris\, 75013\, France;X-APPLE-RADIUS=100;X-TITLE=LINCS Meeting Room
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TZID:Europe/Paris
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DTSTART:20140330T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
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