PPT-Identity Based Encryption

Debdeep Mukhopadhyay Associate Professor Dept of Computer Sc and Engg IIT Kharagpur Public Key Setting Alice and Bob might not have a prior shared secret Each participant has a pair of public and private key for certain prespecified cryptosystem or signature scheme. Attacking non-atomic decryption. Online Cryptography Course Dan Boneh. SSH Binary Packet Protocol. Decryption:. s. tep 1: decrypt packet length field only (!). s. How To Secure My Data. . What . to Protect???. DATA. Data At Rest. Data at Rest Examples. Worst Culprits?. Lost. Infected Easily. Used as ‘Backup’. Lent to others. Data Corruptions more common. “Encryption . and . Globalization. ” – China & India. Draft: . . Adoption of . Crypto, the Cloud, and Lawful Access - Peru. “Going . Dark vs. the Golden Age of . Surveillance”. Where you are. Schemes and Parameters. Joppe W. Bos. Microsoft Research. Contains joint work with Kristin . Lauter, . Jake Loftus and Michael Naehrig. Computing on Encrypted Data. Motivation. Outsource data and computation. usna. . si110. Symmetric Encryption Limitations. Symmetric encryption algorithms use the . same key for encryption and decryption. Both parties must agree to a secret key. Fundamental limitation. How do you exchange a secret key?. Chris Edwards. IT Services. “All . confidential data . must . be encrypted where stored on a mobile . device” . Mobile Device Encryption Policy. What do we mean by “encrypted” ??. Password Protected. Rainbows (a.k.a. Spectrums). Public Private Key Encryption. HTTPS. Encryption. String Encryption. You have an account on . facebook. , LinkedIn, YouTube etc. . Your login: . costanza@seinfeld.com. Your password is : . David Kauchak. CS52 – . Spring 2016. Admin. Assignment 6. Survey: respondents. 24 total respondents. Survey: “How is the class going?”. Survey: “How is the difficulty of the class?”. Survey: time spent per week. Student name: Lindokuhle Duma. Supervisor: Prof. Tucker. Proposed overall solution. P. attern authentication. Visual for Deaf users instead of text . Deaf people are accustomed to signed language. Easy to remember visuals than text [1]. What it. is. Alice sends. a encrypted message to X (e.g. a cloud service). Public key ‘belongs to’ X. X cannot decrypt the message. But X can convert messages. Forward message to B, C, D using re-encryption. Overview. Encryption technologies. Combining encryption technologies for practice. Using encryption technologies for identification – digital signatures. Public key infrastructure. 2. Introduction. Public Private Key Encryption. HTTPS. Encryption. String Encryption. You have an account on . facebook. , LinkedIn, YouTube etc. . Your login: . costanza@seinfeld.com. Your password is : . bosco. If this data was stored in a database, it might look like:. Cryptography. Is:. A tremendous tool. The basis for many security mechanisms. Is not:. The solution to all security problems. Reliable unless implemented and used properly. Something you should try to invent yourself. 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.