'Cipher text' diaporamas de présentation

VPN Technology Advances And Challenges

VPN Technology Advances And Challenges. LILISH M SAKI Lmsaki@scu.edu Santa Clara University COEN 329 Winter 2002. AGENDA. Introduction VPN overview and benefits Technology behind VPN VPN tunneling protocols IPsec VPN Implementation details Implementation alternatives

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Lecture 6 Conditional Processing

Lecture 6 Conditional Processing. Assembly Language for Intel-Based Computers , 4th edition Kip R. Irvine. Outline. Boolean and Comparison Instructions Conditional Jumps Conditional Loops High-Level Logic Structures. Logic Instructions. Syntax for AND, OR, XOR, and TEST :

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Cryptography

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Fluency with Information Technology Third Edition by Lawrence Snyder

Chapter 13: Shhh, It's a Secret: Privacy and Digital Security. Fluency with Information Technology Third Edition by Lawrence Snyder. Privacy: Whose Information Is It?. What is privacy? Examine a transaction of buying Dating for Total Dummies

796 views • 34 slides

Encryption

Encryption. Discrete Math March 7, 2006 Harding University Jonathan White. Outline. Terms Types of Attacks Classical Techniques Substitution: Caesar Monoalphabetic Playfair Shifting: Rail Fence Cipher Rotor Machines (Enigma). Outline (2). Data Encryption Standard (DES) Triple DES

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Wireless LAN Security I: WEP Overview and Tools

Wireless LAN Security I: WEP Overview and Tools. Raj Jain Washington University in Saint Louis Saint Louis, MO 63130 Jain@cse.wustl.edu Audio/Video recordings of this lecture are available at: http://www.cse.wustl.edu/~jain/cse571-07/. Overview. Wi-Fi Operation

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Vanish : Increasing Data Privacy with Self-Destructing Data

Vanish : Increasing Data Privacy with Self-Destructing Data. Presented by : Ahmed Qaid. Roxana Geambasu Tadayoshi Kohno Amit A. Levy Henry M. Levy. What is Vanish .

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Chapter 4: Modes of Operation

Chapter 4: Modes of Operation. CS 472: Fall 2012. Encrypting a Large Massage. Electronic Code Book (ECB) Cipher Block Chaining (CBC) Output Feedback Mode (OFB) Cipher Feedback Mode (CFB ). Electronic Code Book (ECB).

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WEP Case Study

Information Assurance Fall 2006. WEP Case Study. 802.11 or Wi-Fi. IEEE standard for wireless communication Operates at the physical/data link layer Operates at the 2.4 or 5 GHz radio bands Wireless Access Point is the radio base station

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RSA

RSA. By: Abhishek Naik Viswanath Chennuru CPSC 624. Contents. What is Encryption ? What is RSA ? Key Generation Encryption and Decryption Applications Attacks on RSA Conclusion. What is encryption ?.

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Cryptography

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Our Observations

Secure Parameter Filter (SPF) (AKA Protecting Vulnerable Applications with IIS7) Justin Clarke, Andrew Carey Nairn. Our Observations. The same old code-level problems

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Data Encryption

Data Encryption. What is Encryption?. - The translation of data into a secret code. - To read an encrypted file, you must have access to a secret key or password that enables you to decrypt it. - Unencrypted data is called plain text. - encrypted data is referred to as cipher text.

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RSA

RSA. Exponentiation cipher Relies on the difficulty of factoring the product of two large prime numbers RSA factoring challenge http://www.rsa.com/rsalabs/node.asp?id=2092 It takes 30 2.2GHz-Opteron-CPU years to factor a number, about 5 months of calendar time. Background.

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Modes of Operation

Modes of Operation. CS 795. Electronic Code Book (ECB). Each block of the message is encrypted with the same secret key Problems: If two identical blocks are in the same message, cipher text would be identical. Cipher blocks can be rearranged to alter the message. Cipher Block Chaining (CBC).

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Five-minute starter task

Five-minute starter task. Write a function that takes a string argument and returns a spaced out version of the string E.g. spaceOut ("Hello") H e l l o. The spaceOut task. You can iterate over a string, like you can a list: for x in myString : do something

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Chapter 17 TACACS+

Chapter 17 TACACS+. TACACS+. Terminal Access Controller Access Control System Protocol and software used to provide AAA services to an access server or router TACACS+ protocol used in communication from NAS and the TACACS+ daemon running on a security server. TACACS+ Architecture.

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Virtual Private Networks

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Some Simple Cryptograms

Some Simple Cryptograms. Cipher: YHPARGOTPYRC OT EMOCLEW Plain: -----------------------. Cipher: EHT YPS WSI RAE GNI LBA CEU TAO Plain: --- --- --- --- --- --- --- ---. Cipher: ICCRAANCTKBEEDLTIHEIVSECYOODUE Plain: ------------------------------.

279 views • 4 slides

Confidentiality

Information Security & The 10 Domains. Integrity. Confidentiality. Communications Data Hardware Software. Accountability. Next. Information Security The 10 Domains. Main Menu. Security management practices. Access control systems and methodology. Laws, investigation,

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