Cryptographic Algorithms +

Oct 20, 2019

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Cryptographic Algorithms +. CSCI-625-Final.

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Cryptographic Algorithms +

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Cryptographic Algorithms+ CSCI-625-Final

CRYPTOGRAPHIC ALGORITHMS

CRYPTOGRAPHIC ALGORITHMS . -Abdul M. TYPES OF CRYPTOGRAPHIC ALGORITHMS . There are several ways of classifying cryptographic algorithms. For purposes of this presentation, they will be categorized based on the number of keys that are employed for encryption and decryption

518 views • 13 slides

Implementing and Breaking Cryptographic Algorithms

Implementing and Breaking Cryptographic Algorithms. CS651 Security April 18, 2001 Shaun Arnold, Thomas Daniels, Chris Taylor, Mike Walker. Overview. Cryptography seems like a great idea but … how easily is it broken how well designed are the algorithms what are performance trade offs

577 views • 36 slides

Cryptographic Protocols

Cryptographic Protocols. Reference: , Charles P., Security in Computing, 2nd Edition, Prentice Hall, 1996. Definition of Protocols. A protocol is an orderly sequence of steps two ore more parties take to accomplish some task. Characteristics of a Good Protocol. Established in Advance

294 views • 10 slides

Multimedia Data Security and Cryptographic Algorithms

Multimedia Data Security and Cryptographic Algorithms. Dr Mike Spann http://www.eee.bham.ac.uk/spannm M.Spann@bham.ac.uk Electronic, Electrical and Computer Engineering. Contents. We look briefly at the importance of secure cryptography and at some simple cryptographic approaches.

401 views • 28 slides

Cryptographic Protocols

Cryptographic Protocols. ■ Entity Authentication ■ Key Agreement ■ Fiat-Shamir Identification Schemes ■ Zero-Knowledge Proof Systems ■ Shnorr’s Identification/Signature Scheme ■ Commitment Schemes ■ Secret Sharing ■ Electronic Election. Entity Authentication.

1.16k views • 101 slides

CRYPTOGRAPHIC DATA INTEGRITY ALGORITHMS

CRYPTOGRAPHIC DATA INTEGRITY ALGORITHMS. Contents. CRYPTOGRAPHIC HASH FUNCTIONS MESSAGE AUTHENTICATION CODES DIGITAL SIGNATURES. 1. CRYPTOGRAPHIC HASH FUNCTIONS. Applications of Cryptographic Hash Functions Two Simple Hash Functions Requirements and Security

946 views • 40 slides

Computer Networking Security and Cryptographic Algorithms

Computer Networking Security and Cryptographic Algorithms. Dr Sandra I. Woolley. Contents. A summary of security threats and requirements Cryptography vs steganography Keys and the Caesar cipher Cryptanalysis The Vigenère cipher DES (Data Encryption Standard)

358 views • 27 slides

How Are Cryptographic Algorithms Broken???

How Are Cryptographic Algorithms Broken???. Presented By Bhavana Tapde June 19, 2006. Outline. Cryptographic Algorithms Cryptographic Hash Algorithms Applications of Hash Functions Properties of Hash Functions Case Study of MD5 Wang’s Method Klima’s Method Demo Case Study of SHA-1

594 views • 41 slides

Russian cryptographic algorithms (GOST) in Cryptographic Message Syntax and S/MIME

Russian cryptographic algorithms (GOST) in Cryptographic Message Syntax and S/MIME. Grigory Chudov CRYPTO-PRO, Russia Chudov@cryptopro.ru. draft-leontiev-cryptopro-cpcms-00.txt. Russian state standards. Encryption.

336 views • 10 slides

Cryptographic Algorithms

Cryptographic Algorithms. By: Kirti Chawla. Introduction Classification Algorithms Vis-à-Vis Looking back. What is a Cipher or Crypto-algorithm ?. A method or system for transforming given information in order to conceal its meaning. Prologue. Introduction Classification

302 views • 15 slides

Towards FPGA Architectures Optimized For Cryptographic Algorithms

Towards FPGA Architectures Optimized For Cryptographic Algorithms. 唐明. Table of Contents. Antecedents Motivation General and Specific Objectives State art of the work Results Publications Future Work Conclusions. Antecedents. Cryptographic algorithms can be implemented through

755 views • 51 slides

Provable Security vs. Efficiency in Cryptographic Algorithms

Provable Security vs. Efficiency in Cryptographic Algorithms. Rosario Gennaro IBM T.J.Watson Research Center. 2009 Estonian Winter School in Computer Science March 2009. Cryptography. The science of communication in the presence of an adversary Encryption Authentication. Yeah sure!.

464 views • 36 slides

Introduction Overview of security techniques Cryptographic algorithms Digital signatures

Chapter 7: Security. Introduction Overview of security techniques Cryptographic algorithms Digital signatures Cryptography pragmatics Case studies: Needham-Schroeder, Kerberos, SSL&Millicent Summary. Introduction. History The emergence of cryptography into the public domain

957 views • 63 slides

Cryptographic Protocols

Cryptographic Protocols. Asst.Prof.Supakorn Kungpisdan, Ph.D. supakorn@mut.ac.th. Outlines. Authentication Key Exchange Secret Splitting Key Escrow. SKEY. SKEY relies on one-way function Alice enters a random number R to the computer

413 views • 25 slides

Cryptographic Protocols

Cryptographic Protocols. Overview. Basic notions of cryptographic (security) protocols Problems with cryptographic protocols /Design principles for cryptographic protocols Formal specification and analysis of cryptographic protocols ) two formalizations ) proofs about protocols.

828 views • 60 slides

Cryptographic Extraction

Hugo Krawczyk IBM Research. Cryptographic Extraction. “ Is Cryptographic Theory Practically Relevant? ” Cambridge 2-1-12. Imperfect Random Sources. Uniform randomness is crucial in many areas Cryptography: requires source of secret randomness (secret keys)

374 views • 29 slides

Cryptographic Hashes

CS461/ECE422 Spring 2012. Cryptographic Hashes. Reading Material. Text Chapters 2 and 21 Handbook of Applied Cryptography, Menezes , van Oorschot , Vanstone Chapter 9 http://www.cacr.math.uwaterloo.ca/hac/. Hash or Checksums.

313 views • 22 slides

Cryptographic methods

Cryptographic methods. Outline. Preliminary Assumptions Public-key encryption Oblivious Transfer (OT) Random share based methods Homomorphic Encryption ElGamal. Assumptions. Semi-honest party assumption Parties honestly follow the security protocol

313 views • 20 slides

Cryptographic Tools

Cryptographic Tools. Symmetric Ciphers, Public Key Crypto, and Hashes. Crypto in This Class. Mechanism A means to achieving security goals Details Beyond the scope of this class Build your own? Beyond the scope of this professor You better know your stuff. Substitution.

683 views • 44 slides

Multimedia Data Security and Cryptographic Algorithms

Multimedia Data Security and Cryptographic Algorithms. Dr Sandra I. Woolley http://www.eee.bham.ac.uk/woolleysi S.I.Woolley@bham.ac.uk Electronic, Electrical and Computer Engineering. Contents.

261 views • 24 slides

Asymmetric Cryptographic Algorithms

Asymmetric Cryptographic Algorithms. Problem With Symmetric Key. Problem ! Suppose sender & receiver may be in different countries. E.g :- Online shopping website How they will exchange the key & agree on it? Physically visit Courier Internet & ask for confirmation.

356 views • 17 slides

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