'Message digest' presentation slideshows

Chapter 8 Network Security (some reviews and security protocols)

721 views • 55 slides

EE 122: (More) Network Security

574 views • 48 slides

Session 5

628 views • 44 slides

Lecture 24 Cryptography

Lecture 24 Cryptography. CPE 401 / 601 Computer Network Systems. slides are modified from Jim Kurose and Keith Ross and Dave Hollinger. Cryptography. Encryption Scramble data so that only someone with a secret can make sense of the data. Decryption Descrambling encrypted data. K. K.

532 views • 43 slides

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.

552 views • 40 slides

Chapter 5

Chapter 5. Electronic mail security . Outline. Pretty good privacy S/MIME Recommended web sites. Pretty Good Privacy. Philip R. Zimmerman is the creator of PGP. PGP provides a confidentiality and authentication service that can be used for electronic mail and file storage applications.

474 views • 40 slides

Upper OSI Layers

Upper OSI Layers. Natawut Nupairoj, Ph.D. Department of Computer Engineering Chulalongkorn University. Outline. Session Layer. Presentation Layer. Application Layer. Overview. Communication Session. Session Layer. Coordinate connection and disconnection between applications Dialog.

538 views • 38 slides

Connecting an Enterprise Network to an ISP Network

Configuring and Verifying Basic BGP Operations. Connecting an Enterprise Network to an ISP Network. Planning for BGP. Define network requirements Define internal connectivity Define external connectivity to ISP Gather required parameters. Requirements for Basic BGP Configuration.

480 views • 36 slides

Digital Signatures

Digital Signatures. CCA Controller of Certifying Authorities Ministry of Communications & Information Technology. Very easy to make copies Very fast distribution Easy archiving and retrieval Copies are as good as original Easily modifiable Environmental Friendly. Electronic Record.

475 views • 35 slides

Today

Reminders Ch6 Homework due Wed 2 nd exams have been corrected; contact me to see them Continue with Chapter 7 (Security). Today. Chapter 7 roadmap. 7.1 What is network security? 7.2 Principles of cryptography 7.3 Authentication 7.4 Message integrity

447 views • 32 slides

Securing TCP/IP

Securing TCP/IP. Chapter 11. Four Security Methods. Encryption: Transforming information (plaintext, cleartext) using a cipher/algorithm and a key into ciphertext (meaningless, unreadable data) Example: Plaintext: 01001101 = M Key: 01010101 Cipher/algorithm: OR

484 views • 30 slides

Lecture 8: Text processing

Lecture 8: Text processing. CSE 4251. tools. I assume you are already familiar with grep , sed , awk tr : translate or delete characters nl : number of lines (different with ln ) od : dump file in octal format paste : merge lines of file split : split a file into pieces

395 views • 24 slides

FIPS 201 Framework: Special Pubs 800-73,76,78

FIPS 201 Framework: Special Pubs 800-73,76,78. Jim Dray HSPD-12 Workshop May 4/5, 2005. Special Publication 800-73. PIV card application definition NOT a general purpose card platform spec! Part 1: Common data model and migration Part 2: Transition card interfaces

389 views • 24 slides

Lecture #11 Digital Signatures

Lecture #11 Digital Signatures. HAIT Summer 2005 Shimrit Tzur-David. Motivation. The authenticity of many documents is determined by the presence or absence of an authorized handwritten signature.

363 views • 24 slides

Digital Signature

Digital Signature. Xiaoyan Guo/102587 Xiaohang Luo/104446. CONTENTS. What is a Digital Signature Digital Signature Features Digital Signature Concepts How Digital Signature Works How to Register. What is a Digital Signature.

624 views • 23 slides

Security

Security. Outline Encryption Algorithms Authentication Protocols Message Integrity Protocols Key Distribution Firewalls. Why do we care about Security?.

303 views • 21 slides

CIS3360: Chapter 8: Cryptography Application of Public Cryptography Cliff Zou Spring 2012

CIS3360: Chapter 8: Cryptography Application of Public Cryptography Cliff Zou Spring 2012. TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: A A A A A A A A. Acknowledgement. Some slides are modified from the slides provided by textbook:

341 views • 19 slides

Public Key Management and X.509 Certificates

Public Key Management and X.509 Certificates. CSIS 5857: Encoding and Encryption. Public Key Distribution. How does Bob know where a public key comes from? Darth can: Create a public/private key pair K DarthPR , K DarthPU Send the public key K DarthPU to Bob, claiming it is from Alice

302 views • 18 slides

Public Key Management and X.509 Certificates

Public Key Management and X.509 Certificates. CSIS 5857: Encoding and Encryption. Public Key Distribution. How does Bob know where a public key comes from? Darth can: Create a public/private key pair K DarthPR , K DarthPU Send the public key K DarthPU to Bob, claiming it is from Alice

544 views • 18 slides

Digital Certificates

Digital Certificates. Digital certificates serve the purpose of validating the data sent to ensure that it has not been tampered with.

230 views • 4 slides