PPT-Anonymity and Robustness

in Encryption Schemes Payman Mohassel University of Calgary Public Key Encryption PKE pk pk sk KG C Enc pkm m Dec skC PKE KG Enc Dec 2 Traditional Security Notions. By . Esra. . Erdin. Introduction. Types of Anonymity Systems. TOR Overview. Working Mechanism of TOR. I2P Overview. Working Mechanism of I2P. Conclusion. Introduction. Anonymity means that the real author of a message is not known. Stevens Le Blond . David . Choffnes. . Wenxuan. Zhou. Peter . Druschel. . Hitesh . Ballani. . Paul Francis . 2. Snowden wants to communicate with Greenwald without Alexander to find out. ACM Workshop on Privacy in the Electronic Society. 4. November 2013. Henry Corrigan-Gibbs. Stanford. Bryan Ford. Yale. New Anonymity Systems Have a “Chicken-and-Egg” Problem. Few . users. Small anonymity sets. Markulf Kohlweiss. Ueli. Maurer, . Cristina . Onete, . Björn Tackmann, . and . Daniele Venturi. PETS 2013. Context: . E. ncryption and Anonymity. Public-key encryption. Short but eventful history, late 70s, 80s.. -. Ayushi Jain & . ankur. . sachdeva. Motivation. Open nature of networks and unaccountability resulting from anonymity make existing systems prone to various attack. Introduction of trust and reputation based metrics help in enhancing the reliability of anonymity networks. Jondos . in . a. Crowd. Author: Benjamin Winninger. Eavesdropping Attacks . Local Eavesdropper: An attacker who can view all communication to and from a user.. If the eavesdropper gets lucky and is listening to the sender, then the sender is exposed! Otherwise, the receiver is beyond suspicion.. Markulf Kohlweiss. Ueli. Maurer, . Cristina . Onete, . Björn Tackmann, . and . Daniele Venturi. PETS 2013. Context: . E. ncryption and Anonymity. Public-key encryption. Short but eventful history, late 70s, 80s.. CompSci. 590.03. Instructor: . Ashwin. . Machanavajjhala. 1. Lecture 3 : 590.03 Fall 12. Announcements. Project ideas are posted on the site. . You are welcome to send me (or talk to me about) your own ideas.. Testing. . by- . . . (Group 2-Batch F1). . Robustness Testing. A Type Of Black . B. ox Testing. Black. -. box . testing.  is a method . https://datatracker.ietf.org/doc/draft-ietf-dhc-anonymity-profile. /. IETF 93, Prague, July 2015. 7/23/2015. DHCP Anonymity Profile -- IETF 93. 1. Prototype Implementation. Developed by Nick Grifka on test version of Windows 10 (not in the product yet). Undetectability. , . Unobservability. , Pseudonymity and Identity Management – A Consolidated Proposal for Terminology. Authors: Andreas . Pfitzmann. and . Marit. Hansen. Presented by: Murtuza Jadliwala. - . An Analysis of the Bitcoin Transaction Graph. Anil Gaihre. Yan Luo. Hang Liu. 12/15/18. University of Massachusetts Lowell. Outline. Introduction and Background. Anonymity Metrics. Macro Analysis. in . Encryption Schemes. Payman. . Mohassel. University of Calgary. Public Key Encryption (PKE). pk. (. pk. , . sk. )  . KG. C = Enc(. pk,m. ). m = Dec(. sk,C. ) . PKE = (KG, Enc, Dec). 2. Traditional Security Notions. Paul E. Griffiths. 19/6/18. Robustness workshop, Bordeaux. 1. Developmental systems. “. An animal is, in fact, a developmental system, and it is these systems, not the mere adult forms which we conventionally take as typical of the species, which becomes modified during the course of evolution.”.