PPT-Attribute-Based Encryption With Verifiable Outsourced Decry

Abstract Attributebased encryption ABE is a publickey based onetomany encryption that allows users to encrypt and decrypt data based on user attributes A promising application of ABE is flexible access control of encrypted data stored in the cloud using access polices and ascribed attributes associated with private keys and . Attribute-Based Encryption. Brent Waters. Susan Hohenberger. Presented by Shai Halevi. Access Control by Encryption. Idea: Need secret key to access data. SK. PK. 3. Rethinking Encryption. OR. Internal . Team 2.0. Nayan Thakkar, Eddie Gallon, David Kotar, . Bruce Malone and Pamela Dorman. Requirements for Solution. Support for: . Mid size company "X" with ~250 employees. Windows network with Exchange 2010 w/350 mailboxes. Decision Tree Learning. Bamshad Mobasher. DePaul University. 2. Classification: 3 Step Process. 1. Model construction . (. Learning. ):. Each record (instance, example) is assumed to belong to a predefined class, as determined by one of the attributes. Please sit with your advisory . Please Stand for the Pledge. Any Announcements?. Speak now. Upcoming Events. Diego’s Advisory has cleanup duty.. Movie Night this Friday, November 22nd. Half day next Wednesday. Towards Practical Verifiable Graph Processing. Yupeng. Zhang, . Charalampos. . Papamanthou. and . Jonathan . Katz. University of . Maryland. Agenda. Background of verifiable computation and motivation. Vadim . Lyubashevsky. Cryptography. Allows for secure communication in the presence of malicious parties. 2. Cryptography. Allows for secure communication in the presence of malicious parties. 3. Cryptography. Tahmina Ahmed, Ravi Sandhu and . Jaehong. Park. ACM CODASPY. March 22-24, 2017. 1. Institute for Cyber Security. World-Leading Research with Real-World Impact!. by. Outline. Introduction . Background & Motivation. Election. Technologies. How Elections . Should . Be Run. Josh . Benaloh. Senior Cryptographer. Microsoft Research. Traditional Voting Methods. Traditional Voting Methods. Hand-Counted Paper. Traditional Voting Methods. Yupeng. Zhang. , Daniel . Genkin. , Jonathan Katz, . Dimitrios. Papadopoulos and . Charalampos. . Papamanthou. . Cloud Computing. Individuals . Companies. Universities. Security Issue: Integrity. Vadim . Lyubashevsky. Cryptography. Allows for secure communication in the presence of malicious parties. 2. Cryptography. Allows for secure communication in the presence of malicious parties. 3. Cryptography. Diffie. -Hellman. The . ElGamal. . Public-key System. Online Cryptography Course Dan Boneh. Recap: public key encryption: . (Gen, E, D). E. D. pk. m. c. c. m. Goyal. . Venkata. . Koppula. Brent Waters. Lockable Obfuscation. . . Correctness: . Challenger. Attacker. Lockable . Obfuscation: Security. OR. Guess. could . be from . high . entropy . dist.  . J. Alex Halderman Brent Waters. . Princeton University SRI International. Complete audit expensive . . seek . probabilistic . guarantee. Who chooses what to audit?. Motivating Example. Susan . Hohenberger. . George Lu. Brent Waters David Wu. Attribute Based Encryption [SW05, GPSW06]. pk. sk. faculty. + CS. sk. faculty. + math. sk. student. + CS. ct. CS.