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CATEGORIES:Lecture or Presentation
DESCRIPTION:A Complete Characterization of Security for Linicrypt Block Cip
her Modes\n\nWe give a complete characterization of IND$-CPA security for a
large\, natural class of block cipher modes. Specifically\, we consider mo
des that invoke the underlying block cipher and otherwise perform linear op
erations (e.g.\, XOR and multiplication by fixed field elements) on interme
diate values. This class of algorithms corresponds to the Linicrypt model o
f Carmer & Rosulek (Crypto 2016). Our characterization is linear-algebraic
in nature and is easy to check for a candidate mode. Unlike previous work t
hat gave a combinatorial or algebraic criteria for block cipher security\,
our characterization is both sound & complete. Along the way\, we prove tha
t a stateless encryption scheme within this class is secure if and only if
it is secure against adversaries who choose all-zeroes plaintexts.\n\nMajor
Advisor: Mike Rosulek\nCommittee: Glencora Borradaile\nCommittee: Rakesh B
obba
DTEND:20191211T000000Z
DTSTAMP:20200924T213547Z
DTSTART:20191210T220000Z
GEO:44.567164;-123.278692
LOCATION:Kelley Engineering Center\, 1007
SEQUENCE:0
SUMMARY:MS Final Exam – Thomas Hollenberg
UID:tag:localist.com\,2008:EventInstance_32062000870801
URL:https://events.oregonstate.edu/event/ms_final_exam_thomas_hollenberg
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