'Plaintext' presentation slideshows

1.15k views • 101 slides

CIT 380: Securing Computer Systems

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Classic Crypto

Classic Crypto. Overview. We briefly consider the following classic (pen and paper) ciphers Transposition ciphers Substitution ciphers One-time pad Codebook These were all chosen for a reason We see same principles in modern ciphers. Transposition Ciphers.

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Cryptography

Cryptography. Cryptography. Secret (crypto) Writing (graphy) [Greek word] Practice and study of hiding information Concerned with developing algorithms for: Conceal the context of some message from all except the sender & recipient and/or

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SE571 Security in Computing

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Network Security

Network Security. Contents. Security Requirements and Attacks Confidentiality with Conventional Encryption Message Authentication and Hash Functions Public-Key Encryption and Digital Signatures IPv4 and IPv6 Security. Security Requirements. Confidentiality Integrity Availability.

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Security proposal fo

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Security proposal for the High Rate 802.15.3 Standard] Date Submitted: [10 Jul, 2001] Source: [ Gregg Rasor] Company [Motorola, Inc. ]

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22C:19 Discrete Math Integers and Modular Arithmetic

22C:19 Discrete Math Integers and Modular Arithmetic. Fall 2010 Sukumar Ghosh. Preamble. Historically, number theory has been a beautiful area of study in pure mathematics . However, in modern times, number theory is very important in the area of security .

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Private Keyword Search on Streaming Data

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Applications Of DNA computing

Applications Of DNA computing. By Anesu Chaora Bayo Olowoyeye. Introduction. Making DNA Add Cryptography Substitution XOR Steganography Conclusion. Making DNA Add. DNA computing Feasible for combinatorial problems like Hamiltonian Path Problem and NP-complete problems

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The RSA Cryptosystem

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The RSA Cryptosystem

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Beyond the Ideal Object: Towards Disclosure-Resilient Order-Preserving Encryption Schemes

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Cryptography I

Cryptography I. Lecture 3 Dimitrios Delivasilis Department of Information and Communication Systems Engineering University of Aegean. Some modular arithmetic. When we write r = (x mod m)

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Cryptography and Network Security

Cryptography and Network Security . Basics of computer and network S ecurity. Computer security : involves implementing measures to secure a single computer ( protecting the ressources stored on that computer).

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CMSC 414 Computer and Network Security Lecture 4

CMSC 414 Computer and Network Security Lecture 4. Jonathan Katz. One-time pad. The one-time pad achieves perfect secrecy But, it has a number of drawbacks Key size equal to message size Can only be used once Insecure under chosen-plaintext attack

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Techniques for Visual Feedback of Security State

Techniques for Visual Feedback of Security State. Tara Whalen and Kori Inkpen Faculty of Computer Science Dalhousie University whalen at cs dot dal dot ca DIMACS Workshop on Usable Privacy and Security Software July 8, 2004. Introduction. Trying to define an area for doctoral research

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Confusion and Diffusion

Confusion and Diffusion. Ref: William Stallings, Cryptography and Network Security, 3rd Edition, Prentice Hall, 2003. Statistics and Plaintext. Suppose the frequency distribution of plaintext in a human-readable message in some language is known.

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