'4 bits' presentation slideshows

Chapter 3 Symmetric Key Crypto

Chapter 3 Symmetric Key Crypto. Stream Ciphers Block Ciphers Block Cipher Modes Integrity. Symmetric Key Crypto. Stream cipher ? like a one-time pad Key is relatively short Key is stretched into a long keystream Keystream is then used like a one-time pad except provable security

1.21k views • 92 slides

1.04k views • 88 slides

Network Security

Network Security. Cryptology Cryptography Cryptanalysis. Topics Covered. Modern Encryption Techniques Simplified DES (S-DES) Block Cipher Principles The Feistel Cipher Diffusion and Confusion Data Encryption Standard DES Design Principles The Strength of DES DES Modes of Operation.

828 views • 71 slides

Cryptography

761 views • 62 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.

833 views • 59 slides

Memory and Caching

Memory and Caching. Chapter 7.1-7.6. The Memory Hierarchy. Registers L1 Cache L2 Cache Main memory Disk cache Disk Optical Tape. As one goes down the hierarchy Decreasing cost per bit Increasing capacity Increasing access time

840 views • 53 slides

COMS 161 Introduction to Computing

COMS 161 Introduction to Computing. Title: Computing Basics Date: September 10, 2004 Lecture Number: 8. Announcements. Research paper proposals due 9/17/04, next friday. Review. Number Systems Binary Coded Decimal (BCD) ASCII. Outline. Hexadecimal Numbers Digitization

623 views • 51 slides

Cryptography and Network Security Chapter 3

563 views • 50 slides

Quasigroup transformations and their cryptographic potentials

Quasigroup transformations and their cryptographic potentials. Ass. Prof. Danilo Gligoroski Institute of Informatics, Faculty of Natural Sciences, Skopje, Republic of Macedonia. Overview. Examples and definitions of latin squares and quasigroups Latin squares in mathematics

610 views • 42 slides

Intermediate Codes

475 views • 37 slides

Computer Graphics in Java

Computer Graphics in Java. CR325. What is Computer Graphics?. A kind of Data processing Voice and Signal Processing = 1D data processing Image Processing = 2D data processing Computer Graphics = 3D data in with 2D data out. Geometry is transformed into images. What is Computer Animation?.

548 views • 37 slides

COMP211 Computer Logic Design Lecture 6. Digital Building Blocks #6 Memory

COMP211 Computer Logic Design Lecture 6. Digital Building Blocks #6 Memory. Prof. Taeweon Suh Computer Science Education Korea University. Memory. Digital systems including computer systems require memories to store data Registers (made from flip-flops) are kind of memory

387 views • 28 slides

ELEC5616 computer and network security

395 views • 24 slides

COMPUTER ARCHITECTURE

COMPUTER ARCHITECTURE. Computer Arithmetic Multiplication, Floating Point. (Based on text: David A. Patterson & John L. Hennessy, Computer Organization and Design: The Hardware/Software Interface , 3 rd Ed., Morgan Kaufmann, 2007 ). COURSE CONTENTS. Introduction Instructions

636 views • 24 slides

ECE 371 Microprocessor Interfacing

374 views • 22 slides

StreamBit: Sketching high-performance implementations of bitstream programs

249 views • 16 slides

Another use of the JTAG Interface on FPGA

Another use of the JTAG Interface on FPGA. Presented by Karin Shusterman. Introduction. JTAG is usually used for testing the board The JTAG interface can be also used to configure FPGAs and program flash devices Can we do more? How about design testing?. Design testing using JTAG.

290 views • 14 slides

transfer channel

Agent 1. Agent 3. Agent n-1. transfer channel. Agent 2. Agent 4. Agent n. set up connection (ENBCP). agent A. transfer long length content (LMSP). agent B. terminate connection (ENBCP). ?SendReq. !SendReq. Idle. Recving. !SendEndRes. ?SendEndReq. !SendReq. BeforeSend.

241 views • 8 slides

Asst. Lec . Lubna A. Alnabi

Electronic branch Fourth Class Interface Circuits Design. Experiment board design and Expanding the Centronic. Asst. Lec . Lubna A. Alnabi. Experiment board design and Expanding the Centronic.

452 views • 6 slides

BRI Basics

BRI Basics. Subsection of ISDN 2 B channels, 1 D channel Line coding 2B1Q -> North America 4B3T -> rest of the world 48 bit frames 16 bits per B channel 4 bits per D channel 12 bits for sync Max Data Rate is 144 kbit/s 2 X B channel = 64 kbit/s 1 X D channel = 16 kbit/s. BRI Basics.

202 views • 4 slides