'Key cryptography' diaporamas de présentation

Public-Key Cryptography and RSA

Public-Key Cryptography and RSA. CSE 651: Introduction to Network Security. Abstract. We will discuss The concept of public-key cryptography RSA algorithm Attacks on RSA Suggested reading: Sections 4.2, 4.3, 8.1, 8.2, 8.4 Chapter 9. Public-Key Cryptography.

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CHAPTER 6: NUMBER THEORY Topics : - prime numbers, relative prime numbers, modular arithmetic, discovering primes, fin

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The RSA Algorithm

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Efficient Security Mechanisms for Routing Protocols

Efficient Security Mechanisms for Routing Protocols. Yih-Chun Hu, Adrian Perrig, David B. Johnson Presented by Yuzheng Zhou for CSC774. Secure Routing mechanisms in MANET. Most previous secure routing mechanisms use standard digital signatures

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Secure Sockets Layer

Secure Sockets Layer. SSL. SSL is a communications protocol layer which can be placed between TCP/IP and HTTP It intercepts web traffic and provides security between browser and server Encryption is used to guarantee secure communication in an insecure environment

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Certificateless Threshold Ring Signature

Certificateless Threshold Ring Signature. Source: Information Sciences 179(2009) 3685-3696 Author: Shuang Chang, Duncan S. Wong, Yi Mu, Zhenfeng Zhang Presenter: Chun-Yen Lee. Outline. Introduction Definition Proposed scheme. Ring signature. Introduction. Ring signature. Introduction.

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A global scientific and engineering software products and solutions provider

A global scientific and engineering software products and solutions provider. Risk mitigation for e-transactions: Cryptographic methods for fraud prevention Rajeeva L Karandikar EVP and Head, Analytics Cranes Software International Limited. E-Commerce and Risk.

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Misc. Security Items

Misc. Security Items. DKIM. domainkeys identified mail ( dkim ). Developed at and patented by Yahoo! Offers a way for a domain to claim responsibility for an email Uses public key cryptography. dkim features. E-Mail body and selected headers can be covered by the DKIM signature

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Key Exchange Solutions

Key Exchange Solutions. Diffie-Hellman Protocol Needham Schroeder Protocol X.509 Certification. Diffie-Hellman Key Exchange. The Diffie-Hellman protocol allows 2 people to use random values and yet each generate the same symmetric key without transmitting the value of the key.

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17.5.3 Encryption

17.5.3 Encryption. A DBMS can use encryption to protect information in certain situations where the normal security mechanisms of the DBMS are not adequate. For example, an intruder may steal tapes containing some data or tap a communication line.

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No-Key Cryptography

No-Key Cryptography. Nathan Marks. Based on Massey-Omura US Patent # 4,567,600. Overview. Introduction and Overview Analogy of No-Key Cryptography Basic over-view of No-Key Cryptography Original Massey-Omura Algorithm Variations of Massey-Omura Conclusion Questions.

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Security & the Internet

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QMCS 490 - Class Today

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TRUSTED FLOW: Why, How and Where???

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Email Security using Public key cryptography

Email Security using Public key cryptography. Introduction.

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Is RSA a one-way function?

Online Cryptography Course Dan Boneh. Public Key Encryption from trapdoor permutations. Is RSA a one-way function?. Is RSA a one-way permutation?. To invert the RSA one-way func . (without d ) attacker must compute: x from c = x e (mod N).

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Asymmetric-Key Cryptography

Asymmetric-Key Cryptography. Also known as public-key cryptography, performs encryption and decryption with two different algorithms. Each node announces its public key and then uses its own private key to encrypt messages. Other nodes can decrypt the node with the public key.

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