Home
Search results “Shannons theorem in cryptography”
Perfect secrecy | Journey into cryptography | Computer Science | Khan Academy
 
04:12
Claude Shannon's idea of perfect secrecy: no amount of computational power can help improve your ability to break the one-time pad Watch the next lesson: https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/random-vs-pseudorandom-number-generators?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson? https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/case-study-ww2-encryption-machines?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Computer Science on Khan Academy: Learn select topics from computer science - algorithms (how we solve common problems in computer science and measure the efficiency of our solutions), cryptography (how we protect secret information), and information theory (how we encode and compress information). About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Computer Science channel: https://www.youtube.com/channel/UC8uHgAVBOy5h1fDsjQghWCw?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 132488 Khan Academy Labs
cryptography - Perfect Secrecy
 
08:31
cryptography To get certificate subscribe: https://www.coursera.org/learn/cryptography ======================== Playlist URL: https://www.youtube.com/playlist?list=PL2jykFOD1AWb07OLBdFI2QIHvPo3aTTeu ============================ Youtube channel: https://www.youtube.com/user/intrigano ============================ https://scsa.ge/en/online-courses/ https://www.facebook.com/cyberassociation/
Views: 3452 intrigano
Nyquist Limit Theorem, Shannon's Channel Capacity, Maximum Bit Rate solved example
 
13:33
Nyquist Limit Theorem, Shannon's Channel Capacity, Maximum Bit Rate solved example Data Communication and Networking Lectures in Hindi English
Shannons Theory
 
44:46
Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 10015 nptelhrd
Shannon Proof of Vernam's Cipher Unbreakability
 
12:57
Here is the short and far reaching proof that Vernam's 1917 cipher is absolutely unbreakable! The same proof implicates AES, DES, RSA, ECC and all other highly regarded ciphers, proving they are all definitely breakable. This cornerstone proof is of great importance for anyone striving to understand the capabilities and vulnerabilities of modern cryptography. A few minutes of mental focus, and you will understand the nature of cryptography much better than if you read volumes of soft crypto analysis.
Views: 3601 Gideon Samid
What is the Shannon capacity theorem?
 
05:40
Long before wireless devices became ubiquitous, a brilliant mathematician named Claude Shannon had already determined one of the fundamental limits they would face. The Shannon capacity theorem bounds the rate that information can be transmitted across a noisy channel. Credits: Talking: Geoffrey Challen (Assistant Professor, Computer Science and Engineering, University at Buffalo). Producing: Greg Bunyea (Undergraduate, Computer Science and Engineering, University at Buffalo). Part of the https://www.internet-class.org online internet course. A blue Systems Research Group (https://blue.cse.buffalo.edu) production.
Views: 39933 internet-class
Information Theory part 12: Information Entropy (Claude Shannon's formula)
 
07:05
Entropy is a measure of the uncertainty in a random variable (message source). Claude Shannon defines the "bit" as the unit of entropy (which is the uncertainty of a fair coin flip). In this video information entropy is introduced intuitively using bounce machines & yes/no questions. Note: This analogy applies to higher order approximations, we simply create a machine for each state and average over all machines!
Views: 105661 Art of the Problem
Information theory: Entropy
 
03:20
An explanation of entropy in information theory and how to calculate it. (The last video ran long, so I had to slice it up.) More on information theory: http://tinyurl.com/zozlx http://tinyurl.com/8bueub http://tinyurl.com/bfpu8b http://tinyurl.com/as2txv http://tinyurl.com/dcsgt2 http://tinyurl.com/ct5phc The music is the third movement of Carl Maria von Weber's Clarinet Concerto No. 2, as performed by the Skidmore College Orchestra. http://www.musopen.com/music.php?type=piece&id=67 http://myspace.com/zjemptv http://emptv.com/
Views: 109771 Zinnia Jones
cryptography - Perfect Secrecy Part II
 
31:25
Cryptography To get certificate subscribe: https://www.coursera.org/learn/cryptography ======================== Playlist URL: https://www.youtube.com/playlist?list=PL2jykFOD1AWb07OLBdFI2QIHvPo3aTTeu ============================ Youtube channel: https://www.youtube.com/user/intrigano ============================ https://scsa.ge/en/online-courses/ https://www.facebook.com/cyberassociation/
Views: 2390 intrigano
What is cryptography? | Journey into cryptography | Computer Science | Khan Academy
 
01:31
What is Cryptography? A story which takes us from Caesar to Claude Shannon. Watch the next lesson: https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/caesar-cipher?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson? https://www.khanacademy.org/computing/computer-science/algorithms/intro-to-algorithms/v/what-are-algorithms?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Computer Science on Khan Academy: Learn select topics from computer science - algorithms (how we solve common problems in computer science and measure the efficiency of our solutions), cryptography (how we protect secret information), and information theory (how we encode and compress information). About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Computer Science channel: https://www.youtube.com/channel/UC8uHgAVBOy5h1fDsjQghWCw?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 793212 Khan Academy
DES Confusion And Diffusion
 
05:14
This lecture explains Block Cipher primitives.
Views: 15756 Project Rhea
Application of Elliptic Curves to Cryptography
 
55:56
Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 10474 nptelhrd
L10   Shannon's First Theorem by NPTEL IIT BOMBAY
 
52:06
Like the video and Subscribe to channel for more updates. Recommended Books (5 Books , Please buy anything from the below links to support the channel): A Students Guide to Coding and Information Theory http://amzn.to/2zo0MN8 Information Theory, Coding & Cryptography, 1e http://amzn.to/2D72DrX Information Theory and Coding http://amzn.to/2C3n1gv Information Theory, Coding and Cryptography http://amzn.to/2zpRCPW Information Theory and Coding: Basics and Practices http://amzn.to/2zpJQFV
Views: 29 KNOWLEDGE TREE
Shannons Theory (Contd...1)
 
48:28
Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 5896 nptelhrd
Claude Shannon's Perfect Secrecy
 
04:13
Claude Shannon's idea of perfect secrecy is introduced. I'd like to get the point across that no amount of computational power can help improve your ability to break a perfectly secrect encryption scheme.
Views: 75860 Art of the Problem
What is Information Theory? (Information Entropy)
 
03:26
What is the essence of information? We explore the history of communication technology leading to the modern field of information theory. We'll build up towards Claude Shannon's measure of information entropy, one step at a time.
Views: 194726 Art of the Problem
Cryptography information theoretic security and the one time pad
 
18:34
Cryptography information theoretic security and the one time pad To get certificate subscribe: https://www.coursera.org/learn/crypto Playlist URL: https://www.youtube.com/playlist?list=PL2jykFOD1AWYosqucluZghEVjUkopdD1e About this course: Cryptography is an indispensable tool for protecting information in computer systems. In this course you will learn the inner workings of cryptographic systems and how to correctly use them in real-world applications. The course begins with a detailed discussion of how two parties who have a shared secret key can communicate securely when a powerful adversary eavesdrops and tampers with traffic. We will examine many deployed protocols and analyze mistakes in existing systems. The second half of the course discusses public-key techniques that let two parties generate a shared secret key.
Views: 476 intrigano
WII? (2a) Information Theory, Claude Shannon, Entropy, Redundancy, Data Compression & Bits
 
24:17
What is Information? - Part 2a - Introduction to Information Theory: Script: http://crackingthenutshell.org/what-is-information-part-2a-information-theory ** Please support my channel by becoming a patron: http://www.patreon.com/crackingthenutshell ** Or... how about a Paypal Donation? http://crackingthenutshell.org/donate Thanks so much for your support! :-) - Claude Shannon - Bell Labs - Father of Information Theory - A Mathematical Theory of Communication - 1948 - Book, co-written with Warren Weaver - How to transmit information efficiently, reliably & securely through a given channel (e.g. tackling evesdropping) - Applications. Lossless data compression (ZIP files). Lossy data compression (MP3, JPG). Cryptography, thermal physics, quantum computing, neurobiology - Shannon's definition not related to meaningfulness, value or other qualitative properties - theory tackles practical issues - Shannon's information, a purely quantitative measure of communication exchanges - Shannon's Entropy. John von Neumann. Shannon's information, information entropy - avoid confusion with with thermodynamical entropy - Shannon's Entropy formula. H as the negative of a certain sum involving probabilities - Examples: fair coin & two-headed coin - Information gain = uncertainty reduction in the receiver's knowledge - Shannon's entropy as missing information, lack of information - Estimating the entropy per character of the written English language - Constraints such as "I before E except after C" reduce H per symbol - Taking into account redundancy & contextuality - Redundancy, predictability, entropy per character, compressibility - What is data compression? - Extracting redundancy - Source Coding Theorem. Entropy as a lower limit for lossless data compression. - ASCII codes - Example using Huffman code. David Huffman. Variable length coding - Other compression techniques: arithmetic coding - Quality vs Quantity of information - John Tukey's bit vs Shannon's bit - Difference between storage bit & information content. Encoded data vs Shannon's information - Coming in the next video: error correction and detection, Noisy-channel coding theorem, error-correcting codes, Hamming codes, James Gates discovery, the laws of physics, How does Nature store Information, biology, DNA, cosmological & biological evolution
Views: 56639 Cracking The Nutshell
Perfect Cipher - Applied Cryptography
 
01:48
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 6042 Udacity
Claude Shannon - Father of the Information Age
 
29:32
Considered the founding father of the electronic communication age, Claude Shannon's work ushered in the Digital Revolution. This fascinating program explores his life and the major influence his work had on today's digital world through interviews with his friends and colleagues. [1/2002] [Science] [Show ID: 6090]
The one-time pad | Journey into cryptography | Computer Science | Khan Academy
 
02:56
The perfect cipher Watch the next lesson: https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/frequency-stability?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson? https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/polyalphabetic-cipher?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Computer Science on Khan Academy: Learn select topics from computer science - algorithms (how we solve common problems in computer science and measure the efficiency of our solutions), cryptography (how we protect secret information), and information theory (how we encode and compress information). About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Computer Science channel: https://www.youtube.com/channel/UC8uHgAVBOy5h1fDsjQghWCw?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 422305 Khan Academy
Constructive cryptography and information theory
 
47:47
Ueli Maurer, ETH Zurich Annual Workshop & Feder Family Award Ceremony Advanced Communications Center Tel Aviv University 22/2/16
Views: 654 TAUVOD
L26   Shannon's Second Theorem by NPTEL IIT BOMBAY
 
50:22
Like the video and Subscribe to channel for more updates. Recommended Books (5 Books , Please buy anything from the below links to support the channel): A Students Guide to Coding and Information Theory http://amzn.to/2zo0MN8 Information Theory, Coding & Cryptography, 1e http://amzn.to/2D72DrX Information Theory and Coding http://amzn.to/2C3n1gv Information Theory, Coding and Cryptography http://amzn.to/2zpRCPW Information Theory and Coding: Basics and Practices http://amzn.to/2zpJQFV
Views: 28 KNOWLEDGE TREE
Public key cryptography - Diffie-Hellman Key Exchange (full version)
 
08:38
The history behind public key cryptography & the Diffie-Hellman key exchange algorithm. We also have a video on RSA here: https://www.youtube.com/watch?v=wXB-V_Keiu8
Views: 628188 Art of the Problem
Information Theory part 11: Claude Shannon: A Mathematical Theory of Communication
 
04:02
Claude Shannon demonstrated how to generate "english looking" text using Markov chains and how this gives a satisfactory representation of the statistical structure of any message. He uses this model as a framework with which to define 'information sources' and how they should be measured. References: http://www.mast.queensu.ca/~math474/shannon1948.pdf
Views: 61059 Art of the Problem
(Info 1.1) Entropy - Definition
 
13:39
Definition and basic properties of information entropy (a.k.a. Shannon entropy)
Views: 86309 mathematicalmonk
The Shannon Limit - Bell Labs - Future Impossible
 
05:31
In 1948, father of communications theory Claude Shannon developed the law that dictated just how much information could ever be communicated down any path, anywhere, using any technology. The maximum rate of this transmission would come to be known as the Shannon Limit. Researchers have spent the following decades trying to achieve this limit and to try to go beyond it.
Views: 7082 Nokia Bell Labs
Shannons Theory (Contd...2)
 
53:49
Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 4789 nptelhrd
Chapter 2, part 6: Crypto Basics --- crypto history, Claude Shannon
 
07:53
Information Security: Principles and Practice, 2nd edition, by Mark Stamp Chapter 2: Crypto Basics Section 2.4 crypto history, Claude Shannon Class Lecture, 2011
Views: 3410 Mark Stamp
Public Key Cryptography: RSA Encryption Algorithm
 
16:31
RSA Public Key Encryption Algorithm (cryptography). How & why it works. Introduces Euler's Theorem, Euler's Phi function, prime factorization, modular exponentiation & time complexity. Link to factoring graph: http://www.khanacademy.org/labs/explorations/time-complexity
Views: 566885 Art of the Problem
Lecture 11:  The proof of the RSA Algorithm
 
04:19
Modular Arithmetic Lecture series
Views: 1446 maya ahmed
Fermat's Little Theorem (Visualization)
 
06:06
Fermat's Little Theorem Visualized. Introduction to a key result in elementary number theory using a visualization with beads
Views: 90639 Art of the Problem
Introduction to channel capacity | Journey into information theory | Computer Science | Khan Academy
 
05:53
Introduction to Channel Capacity & Message Space Watch the next lesson: https://www.khanacademy.org/computing/computer-science/informationtheory/moderninfotheory/v/how-do-we-measure-information-language-of-coins-10-12?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson? https://www.khanacademy.org/computing/computer-science/informationtheory/moderninfotheory/v/symbol-rate-information-theory?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Computer Science on Khan Academy: Learn select topics from computer science - algorithms (how we solve common problems in computer science and measure the efficiency of our solutions), cryptography (how we protect secret information), and information theory (how we encode and compress information). About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Computer Science channel: https://www.youtube.com/channel/UC8uHgAVBOy5h1fDsjQghWCw?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 51389 Khan Academy Labs
Shannon (Bay's Theorem) ISSR CS515 (Arabic)
 
21:36
محاولة لتبسيط Bay's Theorem برجاء إبلاغي في حالة وجود أخطاء
Views: 434 Ahmed Abdelghany
Gambling with Secrets: Part 4/8 (Private Key Cryptography)
 
08:38
Private key Cryptography is explored from the Caesar Cipher to the one-time pad. We introduce encryption, decryption, ciphers, cryptanalysis and what it means to design a strong cipher. Finally perfect secrecy is explained with the invention of the one-time pad.
Views: 38119 Art of the Problem
Algorithm | Huffman Coding | Part - 2
 
14:02
This video contains the basic concept of Huffman Coding with a example and will help you in various competitive exams like GATE , NET, PSU'S etc
Views: 175521 KNOWLEDGE GATE
6.2 Computing the Uncomputable: The Coding Theorem Method
 
25:32
Unit 6, Module 2 Algorithmic Information Dynamics: A Computational Approach to Causality and Living Systems---From Networks to Cells by Hector Zenil and Narsis A. Kiani Algorithmic Dynamics Lab www.algorithmicdynamics.net
Views: 579 Complexity Explorer
Source encoding | Journey into information theory | Computer Science | Khan Academy
 
05:57
Introduction to coding theory! Watch the next lesson: https://www.khanacademy.org/computing/computer-science/informationtheory/info-theory/v/history-of-optical-telegraphs-language-of-coins-5-9?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson? https://www.khanacademy.org/computing/computer-science/informationtheory/info-theory/v/rosetta-stone-196-b-c-e?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Computer Science on Khan Academy: Learn select topics from computer science - algorithms (how we solve common problems in computer science and measure the efficiency of our solutions), cryptography (how we protect secret information), and information theory (how we encode and compress information). About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Computer Science channel: https://www.youtube.com/channel/UC8uHgAVBOy5h1fDsjQghWCw?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 45394 Khan Academy Labs
Implementation of Elliptic Curve Cryptography
 
55:17
Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 13195 nptelhrd
Classical Cryptography
 
31:57
Subject :Computer Science(PG) Course :Cryptography and Network Security Keyword : SWAYAMPRABHA
Overview on Modern Cryptography
 
58:23
Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 35927 nptelhrd
Symmetric Key Ciphers
 
52:42
Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 18290 nptelhrd