'Data encryption standard des' presentation slideshows

COM 360

COM 360. Chapter 8. Network Security. Need For Security. Motivation: Why do we need security ? Increased reliance on Information technology with or with out the use of networks The use of IT has changed our lives drastically.

1.24k views • 103 slides

E-Commerce Architectures and Technologies

E-Commerce Architectures and Technologies. Rob Oshana Southern Methodist University. Cryptography. Security Service Layers. Non-repudiation. Data Integrity. Data Confidentiality. Access Control. Authentication. Authentication. Typically the first step to gain access to a system

1.1k views • 101 slides

1.42k views • 74 slides

SYMMETRIC CIPHERS

SYMMETRIC CIPHERS. Contents. Classical encryption techniques Block ciphers and the data encryption standard Basic concepts in number theory and finite fields Advanced encryption standard Block cipher operation Pseudorandom number generation and stream ciphers.

1.08k views • 73 slides

Chapter 3: Modern Block Ciphers and the Data Encryption Standard

Chapter 3: Modern Block Ciphers and the Data Encryption Standard. Again Special Thanks to Dr. Lawrie Brown at the Australian Defense Force Academy whose PowerPoint slides provided the basis for these slides. Recall: Private-Key Encryption Algorithms.

835 views • 59 slides

Basic Security Cryptography, Concepts and IPsec

Basic Security Cryptography, Concepts and IPsec. Security. What do we require from a data security system? Confidentiality Only the intended recipient can read the data Integrity No one can change data in transit Authentication I am who I say I am Non Repudiation

741 views • 58 slides

22 April

22 April. Final Deliverables and Presentations Privacy and Security. Final Deliverables: due at start of final. On your home page. In a single easily visible box, links/directions Not in the box means not there. Documentation Functional spec Design document User manuals. Project

607 views • 51 slides

Chapter 3

Chapter 3. Security Through Authentication and Encryption. Objectives. Explain encryption methods and how they are used Describe authentication methods and how they are used Explain and configure IP Security Discuss attacks on encryption and authentication methods. Encryption.

609 views • 50 slides

Modern Block Ciphers

Modern Block Ciphers. will now look at modern block ciphers one of the most widely used types of cryptographic algorithms provide secrecy and/or authentication services in particular will introduce DES (Data Encryption Standard). Block vs Stream Ciphers.

767 views • 49 slides

Sympatric Encryption

539 views • 43 slides

Network Security Essentials

Network Security Essentials. Fifth Edition by William Stallings. Chapter 2. Symmetric Encryption and Message Confidentiality.

1.34k views • 38 slides

E-Commerce

E-Commerce. Security and Authentication Details Jerry Post Westgate Management Development Center Eberhardt School of Business University of the Pacific. Merchant Perspective Assurance of payment Validity of orders, non-repudiation Accounting and auditing

326 views • 27 slides

Cryptography and Network Security Chapter 3

Cryptography and Network Security Chapter 3. Fourth Edition by William Stallings Lecture slides by Lawrie Brown. Modern Block Ciphers. now look at modern block ciphers one of the most widely used types of cryptographic algorithms provide secrecy /authentication services

406 views • 25 slides

Cryptography & Network Security

657 views • 22 slides

System Security: Cryptography Technologies

239 views • 15 slides

Data Encryption Standard (DES)

504 views • 13 slides

Data Encryption Standard (DES)

309 views • 12 slides

Cryptography Algorithms

Cryptography Algorithms. Symmetric and Asymmetric Cryptography Algorithms Data Stream Ciphers Block Ciphers. Key sequence. Key sequence. Plaintext. Ciphertext. Plaintext. Data Stream Ciphers. Principle of a synchronous data-stream cipher. P ? K ? K = P ? 0 = P

220 views • 10 slides

Virtual Private Network(VPN)

Virtual Private Network(VPN) . Presented By Aparna Chilukuri. What is a VPN? . A VPN is a private network that uses a public network (usually the Internet) to connect remote sites or users together. What Makes a VPN?. Remote Access Site-to-Site Intranet Extranet Secure VPN

208 views • 8 slides

VPN IPSEC & SSL technology Security and management point of view

VPN IPSEC & SSL technology Security and management point of view. Lakbabi , A. Lab. Math., Inf. et Applic ., Univ. Mohammed V- Agdal , Rabat, Morocco Orhanou , G. ; El Hajji, S. Virtual private network(VPN). Tunneling Encryption & Decryption Data Encryption Standard(DES) RSA

292 views • 7 slides