'Original message' diaporamas de présentation

Public Key Requirements

Public Key Requirements. computationally easy to create key pairs computationally easy for sender knowing public key to encrypt messages computationally easy for receiver knowing private key to decrypt ciphertext computationally infeasible for opponent to determine private key from public key

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Presentation Saffi Keisari

Short Chosen-Prefix Collisions for MD5 and the Creation of a Rogue CA Certificate. Marc Stevens, Alexander Sotirov , Jacob Appelbaum , Arjen Lenstra , David Molnar, Dag Arne Osvik and Benne de Weger. Presentation Saffi Keisari. Content. MD5 Collision Overview. MD5 Overview.

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Classification and explanation of obsessive compulsive disorder (OCD)

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LECTURE 4 Data Integrity & Authentication Message Authentication Codes (MACs)

LECTURE 4 Data Integrity & Authentication Message Authentication Codes (MACs). Goal. Ensure integrity of messages, even in presence of an active adversary who sends own messages. Alice (sender). Bob (reciever). Fran (forger). Remark: Authentication is orthogonal to secrecy , yet

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Lecture 10 Overview

Lecture 10 Overview. Cryptographic Hash Functions. Message Digest Functions Protect integrity Create a message digest or fingerprint of a digital document MD4, MD5, SHA Message Authentication Codes (MACs) Protect both integrity and authenticity

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Secure Data Transmission

Secure Data Transmission. EDI-INT AS1, AS2, AS3 Kevin Grant. Goals of this Presentation. Understanding Security Mechanisms Understanding Applicability Statements MDNs Secure Transmission Loop AS1, AS2, AS3 Product Certification. AS1/AS2/AS3 Standards.

1.21k views • 28 slides

ECE 6332, Spring, 2014 Wireless Communication

ECE 6332, Spring, 2014 Wireless Communication. Zhu Han Department of Electrical and Computer Engineering Class 18 March. 26 th , 2014. Outline. Chapter 8 FEC Basics Line Code. Automatic Repeat-reQuest (ARQ). Alice and Bob on their cell phones Both Alice and Bob are talking

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Decision Trees and MPI Collective Algorithm Selection Problem

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E-Mail Etiquette

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Implementing RSA Encryption in Java

Implementing RSA Encryption in Java. Select two large prime numbers p , q Compute n = p ? q v = ( p -1) ? ( q -1) Select small odd integer k relatively prime to v gcd( k , v ) = 1 Compute d such that ( d ? k )% v = ( k ? d )% v = 1 Public key is ( k , n )

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10 ROSES FOR YOU

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Cryptography Made Easy

Cryptography Made Easy. Stuart Reges Senior Lecturer. Why Study Cryptography?. Secrets are intrinsically interesting So much real-life drama: Mary Queen of Scots executed for treason primary evidence was an encoded letter they tricked the conspirators with a forgery Students enjoy puzzles

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A brief introduction to cryptography

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Network Security

Network Security. Network Security. Network security starts from authenticating any user.

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SIEVE, IETF 64

SIEVE, IETF 64. Cyrus Daboo cyrus@daboo.name Alexey Melnikov alexey.melnikov@isode.com. Documents ready for IESG. Vacation Clarify how hash is constructed when the :subject parameter is not specified. Default autoreply subject when the original message had no subject. Spamtest IMAP Flags

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STREAM SYMMETRIC CIPHER

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Electronic Medical Records RFP Pre-Release Vendor Conference Capitol Annex Rm 125

Electronic Medical Records RFP Pre-Release Vendor Conference Capitol Annex Rm 125 Friday 04/12/2013 10:00 am to noon.

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LEMON @ Messaging System Ivan, Omar, Sergio 14 march 2012

LEMON @ Messaging System Ivan, Omar, Sergio 14 march 2012. Agenda. General architecture Constrains: re-use lemon-agent and already developed sensors Lemon producer Constrains: r e-use existing solutions to publish data d o not touch agent/ core_sensors e xpensive development

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E-MAIL RECEIVED From: idididid To: ldkf, kdkd, asld From: kshfd To: kjsedf, lkjsdf, ifsd DADADA

E-MAIL RECEIVED From: idididid To: ldkf, kdkd, asld From: kshfd To: kjsedf, lkjsdf, ifsd DADADA BLA BLA BLA -FROM FRED. COMPOSE E-MAIL <you can type here> --- ORIGINAL MESSAGE From: idididid To: ldkf, kdkd, asld From: kshfd To: kjsedf, lkjsdf, ifsd DADADA BLA BLA BLA -FROM FRED.

152 views • 1 slides