'Random oracle' presentation slideshows

Cryptography and Network Security Chapter 11

771 views • 71 slides

Swiss army knife in cryptography and information security - cryptographic hash functions

Swiss army knife in cryptography and information security - cryptographic hash functions. Presented by Prof. Danilo Gligoroski Department of Telematics Faculty of Information Technology, Mathematics and Electrical Engineering Norwegian University of Science and Technology Technology - NTNU,

778 views • 67 slides

IDENTITY BASED ENCRYPTION

881 views • 61 slides

Public-Key Cryptosystems Based on Composite Degree Residuosity Classes

Public-Key Cryptosystems Based on Composite Degree Residuosity Classes. EUROCRYPT'99, LNCS 1592, pp. 223-238, 1999. By Pascal Paillier. Efficient Public-Key Cryptosystem Provably Secure against Active Adversaries. Presenter: ???. ASIACRYPT'99, LNCS 1716, pp. 165-179, 1999.

682 views • 56 slides

Blockchains

Blockchains. Lecture 4. Authenticated encryption. Secrecy + integrity?. We have shown primitives for achieving secrecy and integrity in the private-key setting What if we want to achieve both?. Authenticated encryption. An encryption scheme that achieves both secrecy and integrity.

475 views • 47 slides

Password-based Authentication

836 views • 45 slides

Public-Key Cryptosystems Based on Composite Degree Residuosity Classes

Public-Key Cryptosystems Based on Composite Degree Residuosity Classes. EUROCRYPT'99, LNCS 1592, pp. 223-238, 1999. By Pascal Paillier. Efficient Public-Key Cryptosystem Provably Secure against Active Adversaries. Presenter: ???. ASIACRYPT'99, LNCS 1716, pp. 165-179, 1999.

536 views • 41 slides

Attacks on RSA. Safe modes.

531 views • 41 slides

Public-Key Cryptosystems Based on Composite Degree Residuosity Classes

Public-Key Cryptosystems Based on Composite Degree Residuosity Classes. EUROCRYPT'99, LNCS 1592, pp. 223-238, 1999. By Pascal Paillier. Efficient Public-Key Cryptosystem Provably Secure against Active Adversaries. Presenter: ???. ASIACRYPT'99, LNCS 1716, pp. 165-179, 1999.

422 views • 41 slides

Efficient Private Matching and Set Intersection

459 views • 25 slides

Improved OT Extension for Transferring Short Secrets

Improved OT Extension for Transferring Short Secrets. Vladimir Kolesnikov (Bell Labs) Ranjit Kumaresan ( Technion ). Secure Computation. Most general problem in cryptography Moving fast from theory to practice Major research effort I mproving (asymptotic & concrete) efficiency

351 views • 24 slides

Non-Malleable Hash Functions

Non-Malleable Hash Functions. FORMACRYPT, 2007 Alexandra Boldyreva David Cash Marc Fischlin Bogdan Warinschi. Non-Malleability. Intuition Given instance f(x) does not help to find f(x*) for related x*. this is a very good test. Non-Malleability. Example 1

353 views • 23 slides

New Bounds for PMAC, TMAC, and XCBC

New Bounds for PMAC, TMAC, and XCBC. Kazuhiko Minematsu and Toshiyasu Matsushima, NEC Corp. and Waseda University. Fast Software Encryption 2007, March 26-28, Luxembourg City, Luxembourg. Introduction. Message authentication code (MAC) from block ciphers (BCs)

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Summary

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Intro To Encryption Exercise 4

Intro To Encryption Exercise 4. Defining Pseudo-Random Permutation. Let A be alg. with oracle to a function from {0,1} k to {0,1} k Notation: let A f denote A with oracle to f :{0,1} k ? {0,1} k Let where key ? R {0,1} k and r is a random function over {0,1} k

257 views • 18 slides

Domain Extension for Random Oracles: Beyond the Birthday Paradox Bound

249 views • 14 slides

CAS CS 538

CAS CS 538. Cryptography. Administrativia. General info. Instructor: Gene Itkis ( itkis+cs5 38 @cs.bu.edu ) Course page: www.cs.bu.edu/fac/itkis/ 538 Also found from the CS dept. courses page. General Info. Prerequisite: CS 332 or consent of instructor Relation to CS 458

143 views • 13 slides