PPT-Identity-based encryption with (almost) tight security in the multi-instance, multi-ciphertext

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Dennis Hofheinz Jessica Koch Christoph Striecks Karlsruhe Institute of Technology Germany 1 Overview Identity B ased Encryption IBE Tight Security U nderlying

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Identity-based encryption with (almost) tight security in the multi-instance, multi-ciphertext: Transcript

Dennis Hofheinz Jessica Koch Christoph Striecks Karlsruhe Institute of Technology Germany 1 Overview Identity B ased Encryption IBE Tight Security U nderlying IBEScheme by Chen and Wee. 0368-4474-01, . Winter 2011. Lecture 14:. More on vulnerability and exploits,. Fully . homomorphic. encryption. Eran. . Tromer. Slides credit: . Vinod. . Vaikuntanathan. (U. Toronto). More on vulnerability exploitation. Chapter 2. Fifth Edition. by William Stallings . Lecture slides by . Lawrie. . Brown. Modified by Richard Newman. Chapter 2 – . Classical Encryption. Techniques. "I am fairly familiar with all the forms of secret writings, and am myself the author of a trifling monograph upon the subject, in which I analyze one hundred and sixty separate ciphers," said Holmes.. CSL 759. Shweta Agrawal. Course Information. 4-5 . homeworks. (20% total). A . midsem. (25%). A major (. 35%. ). A project (20%). Attendance required as per institute policy. Challenge . questions (Extra Credit). Ameer M.S. Abdelhadi. Guy G.F. Lemieux. Multi-ported Memories:. A Keystone for Parallel Computation!. 1. Enhance ILP for processors and accelerators, e.g.. VLIW Processors. CMPs. Vector Processors. CGRAs. ingenuity cannot concoct a cipher which human ingenuity cannot resolve. .”. Edgar Allan Poe, 1841. CS-127 / CSCI E-127: Cryptography. Web page: . http://www.boazbarak.org/cs127. (Google . “. cs. 127 boaz”. rupesh.vaishnav@darshan.ac.in. 94280-37452. Information & Network Security (2170709) . Darshan . Institute of Engineering & . Technology. UNIT-1. Outline. OSI Security Architecture. Security Attacks. CSL 759. Shweta Agrawal. Course Information. 4-5 . homeworks. (20% total). 2 minors (15% each). A major (30%). A project (20%). Attendance required as per institute policy. Scribe / Challenge questions (Extra Credit). Daniel Wichs (Northeastern University). Joint work with . Pratyay. Mukherjee. Multi-Party Computation. Goal: . Correctness. : Everyone . computes. f(x. 1. ,…,. x. n. ). . Security. :. Nothing else revealed. Chapter 2. Fifth Edition. by William Stallings . Lecture slides by . Lawrie. . Brown. Modified by Richard Newman. Chapter 2 – . Classical Encryption. Techniques. "I am fairly familiar with all the forms of secret writings, and am myself the author of a trifling monograph upon the subject, in which I analyze one hundred and sixty separate ciphers," said Holmes.. 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. pk. , . sk. pk. c. . . . Enc. pk. (m). m. = . Dec. sk. (c). c. pk. pk. Public-key encryption. A public-key encryption scheme is composed of three PPT algorithms:. Gen: . key-generation algorithm. Definitions. Online Cryptography Course Dan Boneh. Goals. An . authenticated encryption . system (E,D) is a cipher where . As usual: E: K × M . × . N . ⟶ C. Cryptography Lecture 3 So far… “Heuristic” constructions; construct, break, repeat, … Can we prove that some encryption scheme is secure? First need to define what we mean by “secure” in the first place… Authenticated Encryption and Cryptographic Network Protocols David Brumley dbrumley@cmu.edu Carnegie Mellon University Some Straw Men 2 TCP/IP (highly abstracted) packet Destination Machine TCP/IP Stack

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