'Public private key pair' diaporamas de présentation

7.1 Pretty Good Privacy Phil Zimmerman (MIT):

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AES algorithm

AES algorithm. 128 bits/16 bytes. Byte substitution. Shift Row. A round:. Mix Column. Key Addition. 4 bytes. AES algorithm. a set of 16 bytes from the file to be encrypted. B Y S T U E B. s. S H I R F O T W. Mix column. Mix column. Mix column. Mix column.

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Arab Academy for Science & Technology and Maritime Transport

Arab Academy for Science & Technology and Maritime Transport. e. Represented By : Ahmed Eldemallawy Ahmed Madani. Agenda. e -Mail. e -Commerce. Email Email Security Enhancements PGP ( Pretty Good Privacy ) S/MIME (Secure/Multipurpose Internet Mail Extensions). Email.

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Grid Security: PKI Based Authentication Infrastructure

Grid Security: PKI Based Authentication Infrastructure. Source: The Globus Project Argonne National Laboratory USC Information Sciences Institute http://www.globus.org/ Updated/Localised: Rajkumar Buyya. Security.

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COM342 Networks and Data Communications

COM342 Networks and Data Communications. Lecture 10B: Security; authentication and encryption. Ian McCrum Room 5B18 Tel: 90 366364 voice mail on 6 th ring Email: IJ.McCrum@Ulster.ac.uk Web site: http://www.eej.ulst.ac.uk. Keypoints. War driving, what is it.

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IE MS5710 Pu blic key cryptosystems

IE MS5710 Pu blic key cryptosystems. 19 Feb 20 12 Prof. CHAN Yuen-Yan, Rosanna Department of Information Engineering The Chinese University of Hong Kong. Private-Key Cryptography. traditional private/secret/single key cryptography uses one key

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CS 5920 Applied Cryptography Spring 2014 Chapter 9 Public Key Cryptography and RSA

CS 5920 Applied Cryptography Spring 2014 Chapter 9 Public Key Cryptography and RSA. Cryptography and Network Security Fifth Edition, by William Stallings . Secret-Key Cryptography. traditional symmetric/secret/single key cryptography uses one key shared by both sender and receiver

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Chapter 9: Public Key Cryptography

Chapter 9: Public Key Cryptography. Private-Key Cryptography. traditional private/secret/single key cryptography uses one key shared by both sender and receiver if this key is disclosed communications are compromised also is symmetric , parties are equal

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Applied Cryptography (Public Key)

Applied Cryptography (Public Key). RSA. Public Key Cryptography.

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Cryptography and Network Security Chapter 9

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Electronic Payment Systems 20-763 Lecture 7 Digital Certificates

Electronic Payment Systems 20-763 Lecture 7 Digital Certificates. Digital Certificate. A digital identity document binding a public-private key pair to a specific person or organization

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Cryptography and Network Security

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Public Key Cryptography and the RSA Algorithm

Public Key Cryptography and the RSA Algorithm. Cryptography and Network Security by William Stallings Lecture slides by Lawrie Brown Edited by Dick Steflik. Private-Key Cryptography. traditional private/secret/single key cryptography uses one key

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Overview of Security Research in Ad Hoc Networks

Overview of Security Research in Ad Hoc Networks. Melanie Agnew John Folkerts Cory Virok. Agenda. Towards Flexible Credential Verification in Mobile Ad-hoc Networks by Keoh and Lupu Simple and Fault-Tolerant Key Agreement for Dynamic Collaborative Groups by Kim, Perring, and Tsudik

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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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The RSA Algorithm

The RSA Algorithm. JooSeok Song 2007. 11. 13. Tue Modified Peter Levinsky. RSA. by Rivest, Shamir & Adleman of MIT in 1977 best known & widely used public-key scheme based on exponentiation in a finite (Galois) field over integers modulo a prime

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Identity Management and PKI Credentialing at UTHSC-H

Identity Management and PKI Credentialing at UTHSC-H. Bill Weems Academic Technology University of Texas Health Science Center at Houston. University of Texas Health Science Center at Houston UTHSC-H. Six Schools Graduate School of Biomedical Sciences Dental School Medical School

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Computers and Scientific Thinking David Reed, Creighton University

Computers and Scientific Thinking David Reed, Creighton University. Applications in Cryptography. Cryptography. encryption is the process of encoding a message so that it is decipherable only by its intended recipient

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