PDF-Improved NonCommitting Encryption with Applications to

sgchoidglasnertal cscolumbiaedu Queens College CUNY hoeteckcsqccunyedu Abstract We present a new construction of noncommitting encryption schemes Unlike the previous constructions of Canetti et al STOC 96 and of Damg ard and Nielsen Crypto 00 our co. CBC paddings attacks. Online Cryptography Course Dan Boneh. Recap. Authenticated encryption. : CPA security + . ciphertext. integrity. C. onfidentiality in presence of . 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. 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. Name : . Maryam Mohammed . Alshami. ID:. H00204657. Encryption. : . is the process of encoding messages or information in such a way that only authorized parties can read it. .. Important part of computing to keep our file . David Froot. Protecting data By encryption . How do we transmit information and data, especially over the internet, in a way that is secure and unreadable by anyone but the sender and recipient?. Encryption is simply the process of transforming information, such as plain text or numbers, using an algorithm. Only those with the algorithm can decipher the encrypted information, and even a relatively simple encryption technique can be difficult to decode without the key. . 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 : . 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 : . 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. 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. 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:. 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. Citation. I would like to thank Claude Crepeau for allowing me to use his slide from his crypto course to mount my course. Some of these slides are taken directly from his course. . Comp 547 at . Mcgill. Crypto Concepts Symmetric encryption, Public key encryption, and TLS 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