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Computer and Information Security

Computer and Information Security

Computer and Information Security. Chapter 4 Public Key Cryptography . Chapter 4: Public Key Cryptography. You should not live one way in private, another in public. ? Publilius Syrus. Three may keep a secret, if two of them are dead. ? Ben Franklin. Overview. Message Authentication

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1.78k views • 146 slides
Digital Data Communications Techniques

Digital Data Communications Techniques

Digital Data Communications Techniques. Ir. Hary Nugroho MT. Data Transmission. The Successful transmission of data depends principally on two factor : The quality of the signal being transmitted The characteristics of transmission medium. Quality of the signal. Timing Problem controlling

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1.18k views • 87 slides
Dr Mohamed Menacer College of Computer Science and Engineering, Taibah University eazmm@hotmail.com , www.mmenacer.i

Dr Mohamed Menacer College of Computer Science and Engineering, Taibah University eazmm@hotmail.com , www.mmenacer.i

Dr Mohamed Menacer College of Computer Science and Engineering, Taibah University eazmm@hotmail.com , www.mmenacer.info. CE-321: Computer Architecture. Chapter 3: Cache, Internal, External Memory. Characteristics. Location Capacity Unit of transfer Access method Performance

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701 views • 64 slides
Chapter 3

Chapter 3

Chapter 3. Block Ciphers & The Data Encryption Standard. Contents. Block Cipher Principles The Data Encryption Standard The Strength of DES Differential and Linear Cryptananlysis Block Cipher Design Principles. Block Cipher principles. Stream Ciphers and Block Ciphers

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1.24k views • 57 slides
Caches (Writing)

Caches (Writing)

Caches (Writing). Hakim Weatherspoon CS 3410, Spring 2013 Computer Science Cornell University. P & H Chapter 5.2-3, 5.5. Goals for Today: caches. Writing to the Cache Write-through vs Write-back Cache Parameter Tradeoffs Cache Conscious Programming. Writing with Caches. Eviction.

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581 views • 43 slides
Chapter 6

Chapter 6

Chapter 6. Digital Data Communications Techniques. Asynchronous and Synchronous Transmission 1. We are concerned with serial transmission of data, I.e. transmission over a single path rather than parallel set of lines Signals are sent down the line one at a time each containing

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576 views • 42 slides
Lecture 5

Lecture 5

Lecture 5. Review of Signal encoding techniques Digital data into digital signals Digital data into analog signals Analog data into digital signals Analog data into analog signal Synchronous and asynchronous communication Error correction and detection. Analog data into analog signal.

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589 views • 41 slides
Hash and Mac Algorithms

Hash and Mac Algorithms

Hash and Mac Algorithms. Contents. Hash Functions Secure Hash Algorithm HMAC. Hash Functions. Hash functions Takes an input message M Produces an output hash value, H( M ), for the message M. M. Hash function. H( M ). Hash Functions. Hash functions

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1.11k views • 39 slides
William Stallings Data and Computer Communications 7th Edition

William Stallings Data and Computer Communications 7th Edition

William Stallings Data and Computer Communications 7th Edition . Chapter 6 Digital Data Communications Techniques Async and Sync Communication Error Processing Interface. Asynchronous and Synchronous Transmission.

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573 views • 36 slides
William Stallings Data and Computer Communications 7th Edition

William Stallings Data and Computer Communications 7th Edition

William Stallings Data and Computer Communications 7th Edition . Chapter 6 Digital Data Communications Techniques. Asynchronous and Synchronous Transmission. Timing problems require a mechanism to synchronize the transmitter and receiver Two solutions Asynchronous Synchronous. Asynchronous.

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532 views • 35 slides
William Stallings Data and Computer Communications 7th Edition

William Stallings Data and Computer Communications 7th Edition

William Stallings Data and Computer Communications 7th Edition . Chapter 6 Digital Data Communications Techniques. Asynchronous and Synchronous Transmission. Timing problems require a mechanism to synchronize the transmitter and receiver Two solutions Asynchronous Synchronous. Asynchronous.

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495 views • 35 slides
William Stallings Data and Computer Communications 7th Edition

William Stallings Data and Computer Communications 7th Edition

William Stallings Data and Computer Communications 7th Edition . Chapter 6 Digital Data Communications Techniques. Asynchronous and Synchronous Transmission. Timing problems require a mechanism to synchronize the transmitter and receiver Two solutions Asynchronous Synchronous. Asynchronous.

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589 views • 34 slides
Beyond-birthday-bound Security Based on Tweakable Block Ciphers

Beyond-birthday-bound Security Based on Tweakable Block Ciphers

Beyond-birthday-bound Security Based on Tweakable Block Ciphers. Kazuhiko Minematsu NEC Corporation. Fast Software Encryption 2009, Leuven, Belgium. Doubling the Block Length of a Cipher. Build 2n-bit block cipher using n-bit components Many solutions, e.g., using Feistel Permutation.

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372 views • 28 slides
ECS 152A

ECS 152A

ECS 152A. 4. Communications Techniques. Asynchronous and Synchronous Transmission. Timing problems require a mechanism to synchronize the transmitter and receiver Two solutions Asynchronous Synchronous. Asynchronous. Data transmitted on character at a time 5 to 8 bits

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282 views • 28 slides
Cache Replacement Policies

Cache Replacement Policies

Cache Replacement Policies. Prof. Mikko H. Lipasti University of Wisconsin-Madison ECE/CS 752 Spring 2012. Cache Design: Four Key Issues. These are: Placement Where can a block of memory go? Identification How do I find a block of memory? Replacement

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655 views • 25 slides
Lecture 5

Lecture 5

Lecture 5. Review of Signal encoding techniques Digital data into digital signals Digital data into analog signals Analog data into digital signals Analog data into analog signal Synchronous and asynchronous communication Error correction and detection. Analog data into analog signal.

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343 views • 24 slides
The Advanced Encryption Standard ( AES ) Simplified

The Advanced Encryption Standard ( AES ) Simplified

The Advanced Encryption Standard ( AES ) Simplified. Cryptosystems and Secrecy. With cryptosystems, we desire perfect secrecy : the probability that the contents of some intercepted data corresponds to some plaintext message is unaltered by knowledge of the ciphertext for that message.

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605 views • 22 slides
ROBTIC : On chip I-cache design for low power embedded systems

ROBTIC : On chip I-cache design for low power embedded systems

ROBTIC : On chip I-cache design for low power embedded systems. Varun Mathur Mingwei Liu. I-cache and address tag . Instruction cache has Large chip area High access frequency=>switching power Example: Direct mapped I-cache 1024 entries (=>1024 one way sets)

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317 views • 21 slides
Information Systems Security

Information Systems Security

Information Systems Security. Mahmoud Youssef, PhD. Based on notes by . Professor Vijay Atluri. Policy defines the requirements need to be implemented within the hardware and software external to the computer system including physical, personnel and procedural controls

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259 views • 14 slides
Area- and Power-Reduced Standard-Cell Spanning Tree Adders

Area- and Power-Reduced Standard-Cell Spanning Tree Adders

Pasquale Corsonello, University of Reggio Calabria Stefania Perri, University of Calabria Vitit Kantabutra, Idaho State University. Area- and Power-Reduced Standard-Cell Spanning Tree Adders. Importance of Low-Power Adders. Adders are used in virtually all digital devices

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282 views • 12 slides

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