'El gamal' diaporamas de présentation

Lecture 3.2: Public Key Cryptography II

Lecture 3.2: Public Key Cryptography II. CS 436/636/736 Spring 2014 Nitesh Saxena. Course Administration. HW1 solution has been posted Grades posted We will distribute after lecture today Any questions, or help needed? We need to something to make-up the missed material

474 views • 35 slides

Lecture 3.2: Public Key Cryptography II

Lecture 3.2: Public Key Cryptography II. CS 436/636/736 Spring 2014 Nitesh Saxena. Course Administration. HW1 solution has been posted Grades posted We will distribute after lecture today Any questions, or help needed? We need to something to make-up the missed material

356 views • 35 slides

Computer Security

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Computer Security

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Computer Security

Computer Security. Secure Communication Cryptography Mort Anvari. Secure Communication. Well established needs for secure communication War time communication Business transactions Illicit Love Affairs Requirements of secure communication Secrecy

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Introduction to Modern Cryptography Homework assignments

Introduction to Modern Cryptography Homework assignments. Pollards p -1 factoring algorithm. Let B be a smoothness bound Let Q be the LCM of all prime powers ? B If ( p -1) is B -smooth then and for any a , gcd( a , p )=1,. How many bits in Q?.

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Electronic Voting Schemes and Other stuff

Electronic Voting Schemes and Other stuff. Requirements. Only eligible voters can vote (once only) No one can tell how voter voted Publish who voted (?) Voter cannot be coerced/bribed to voting some way Voter cannot prove how she voted. The final tally is the correct sum

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Simultaneous Distribution Control and Privacy Protection for Proxy based Media Distribution

Simultaneous Distribution Control and Privacy Protection for Proxy based Media Distribution. Songqing Chen ( George Mason University ) Shiping Chen ( George Mason University ) Huiping Guo ( California State University ) Bo Shen ( Hewlett-Packard Labs )

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El_Gamal Cryptography

El_Gamal Cryptography. Introduction. El_Gamal is a public-key cryptosystem technique was designed by Dr. Taher Elgamal . El_Gamal depends on the one way function, means that the encryption and decryption are done in separate functions. Introduction.

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Funkspiel Schemes: An Alternative to Conventional Tamper Resistance

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Chapter 3 Encryption Algorithms & Systems (Part C)

Chapter 3 Encryption Algorithms & Systems (Part C). Outline. NP-completeness & Encryption Symmetric (secret key) vs Asymmetric (public key) Encryptions Popular Encryption Algorithms Merkle-Hellman Knapsacks RSA Encryption El Gamal Algorithms DES Hashing Algorithms Key Escrow & Clipper.

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A Quick Tour of Cryptographic Primitives

18739A: Foundations of Security and Privacy . A Quick Tour of Cryptographic Primitives. Anupam Datta CMU Fall 2009. Basic Cryptographic Concepts. Encryption scheme (symmetric and public key) Signature scheme Message authentication code Hash function

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