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Symmetric Key and Public Key Encryption
 
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Modern day encryption is performed in two different ways. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Using the same key or using a pair of keys called the public and private keys. This video looks at how these systems work and how they can be used together to perform encryption. Download the PDF handout http://itfreetraining.com/Handouts/Ce... Encryption Types Encryption is the process of scrambling data so it cannot be read without a decryption key. Encryption prevents data being read by a 3rd party if it is intercepted by a 3rd party. The two encryption methods that are used today are symmetric and public key encryption. Symmetric Key Symmetric key encryption uses the same key to encrypt data as decrypt data. This is generally quite fast when compared with public key encryption. In order to protect the data, the key needs to be secured. If a 3rd party was able to gain access to the key, they could decrypt any data that was encrypt with that data. For this reason, a secure channel is required to transfer the key if you need to transfer data between two points. For example, if you encrypted data on a CD and mail it to another party, the key must also be transferred to the second party so that they can decrypt the data. This is often done using e-mail or the telephone. In a lot of cases, sending the data using one method and the key using another method is enough to protect the data as an attacker would need to get both in order to decrypt the data. Public Key Encryption This method of encryption uses two keys. One key is used to encrypt data and the other key is used to decrypt data. The advantage of this is that the public key can be downloaded by anyone. Anyone with the public key can encrypt data that can only be decrypted using a private key. This means the public key does not need to be secured. The private key does need to be keep in a safe place. The advantage of using such a system is the private key is not required by the other party to perform encryption. Since the private key does not need to be transferred to the second party there is no risk of the private key being intercepted by a 3rd party. Public Key encryption is slower when compared with symmetric key so it is not always suitable for every application. The math used is complex but to put it simply it uses the modulus or remainder operator. For example, if you wanted to solve X mod 5 = 2, the possible solutions would be 2, 7, 12 and so on. The private key provides additional information which allows the problem to be solved easily. The math is more complex and uses much larger numbers than this but basically public and private key encryption rely on the modulus operator to work. Combing The Two There are two reasons you want to combine the two. The first is that often communication will be broken into two steps. Key exchange and data exchange. For key exchange, to protect the key used in data exchange it is often encrypted using public key encryption. Although slower than symmetric key encryption, this method ensures the key cannot accessed by a 3rd party while being transferred. Since the key has been transferred using a secure channel, a symmetric key can be used for data exchange. In some cases, data exchange may be done using public key encryption. If this is the case, often the data exchange will be done using a small key size to reduce the processing time. The second reason that both may be used is when a symmetric key is used and the key needs to be provided to multiple users. For example, if you are using encryption file system (EFS) this allows multiple users to access the same file, which includes recovery users. In order to make this possible, multiple copies of the same key are stored in the file and protected from being read by encrypting it with the public key of each user that requires access. References "Public-key cryptography" http://en.wikipedia.org/wiki/Public-k... "Encryption" http://en.wikipedia.org/wiki/Encryption
Views: 451245 itfreetraining
RSA Algorithm with solved example using extended euclidean algorithm | CSS series #7
 
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Take the Full Course of Cryptography and Network Security What we Provide 1) 20 Videos (Index is given down) + More Update will be Coming Before final exams 2)Hand made Notes with problems for your to practice 3)Strategy to Score Good Marks in Cryptography and Network Scurity To buy the course click https://goo.gl/mpbaK3 if you have any query email us at [email protected] Sample Notes : https://goo.gl/Ze1FpX or Fill the form we will contact you https://goo.gl/forms/2SO5NAhqFnjOiWvi2 Cryptography and System Security Index Lecture 1 Introduction to Cryptography and Security System Lecture 2 Security Goals and Mechanism Lecture 3 Symmetric Cipher Lecture 4 Substitution Cipher Lecture 5 Transposition Cipher Lecture 6 Stream and Block Cipher Lecture 7 Mono Alphabetic Cipher Lecture 8 Poly Alphabetic Cipher Lecture 9 Diffie Hellman Lecture 10 RSA Algorithm with Solved Example Lecture 11 IDEA Algorithm Full Working Lecture 12 SHA-1 Algorithm Full Working Lecture 13 Blowfish Algorithm Full working Lecture 14 DES Algorithm Full Working Lecture 15 Confusion and Diffusion Lecture 16 AES Algorithm Full working Lecture 17 Kerberos Lecture 18 Malicious Software ( Virus and worms ) Lecture 19 DOS and DDOS Attack Lecture 20 Digital Signature Full working Explained More videos Coming Soon.
Views: 249333 Last moment tuitions
Asymmetric encryption - Simply explained
 
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How does public-key cryptography work? What is a private key and a public key? Why is asymmetric encryption different from symmetric encryption? I'll explain all of these in plain English! 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be 👍🏻 Like my Facebook page: https://www.facebook.com/savjee
NETWORK SECURITY - DIFFIE HELLMAN KEY EXCHANGE ALGORITHM
 
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This Algorithm is used to exchange the secret /symmetric key between sender and receiver. This exchange of key can be done with the help of public key and private key step 1 Assume prime number p step 2 Select a such that a is primitive root of p and a less than p step 3 Assume XA private key of user A step 4 Calculate YA public key of user A with the help of formula step 5 Assume XB private key of user B step 6 Calculate YB public key of user B with the help of formula step 7 Generate K secret Key using YB and XA with the help of formula at Sender side. step 8 Generate K secret Key using YA and XB with the help of formula at Receiver side.
Public Key Cryptography (CSS441, L13, Y15)
 
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Concepts of public key cryptography. Course material via: http://sandilands.info/sgordon/teaching
Views: 483 Steven Gordon
Public Key Cryptography
 
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What is Public Key Cryptography? A kinetic text animation by Candle & Bell!
Views: 145 CandleandBell
7 PUBLIC KEY CRYPTOGRAPHY
 
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Public Key cryptography chapter9 Reference william stallings presented by P.V.S Sriram Lecturer in MCA Dept KBN College.
Views: 203 sriram panjagala
Key Exchange
 
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Views: 1099 Internetwork Security
The Story of Digital Signatures and Public Key Infrastructure
 
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This movie explains the concepts behind Digital Signatures and the various components of Public Key Infrastructure in layman's terms from the Indian Context.
Views: 15555 PKIIndia
What is public-key cryptography?
 
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The presentation portion only, as seen in my other video, http://youtu.be/ejppVhOSUmA?hd=1
Views: 1435 xkiller213
2.4.1 RSA Public Key Encryption: Video
 
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MIT 6.042J Mathematics for Computer Science, Spring 2015 View the complete course: http://ocw.mit.edu/6-042JS15 Instructor: Albert R. Meyer License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 16772 MIT OpenCourseWare
Difference between Asymmetric Key and Symmetric Key Cryptography
 
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Difference between Asymmetric Key and Symmetric Key Cryptography Keywords: Asymmetric Key Cryptography Symmetric Key Cryptography Network Security Notes
How asymmetric (public key) encryption works
 
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Easy explanation of "public key encryption". Instead of the usual terms of "public key" and "private key" this tutorial uses "lock" and "key". ================================================== If you want to start protecting you email: get free Privacy Everywhere Beta, http://www.privacyeverywhere.net/
Views: 202323 Veet Vivarto
RSA Cryptosystem Algorithm (Public Key Algorithm) in Hindi with Example
 
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RSA Cryptosystem Algorithm (Public Key Algorithm) in Hindi with Example Like FB Page - https://www.facebook.com/Easy-Engineering-Classes-346838485669475/ Complete Data Structure Videos - https://www.youtube.com/playlist?list=PLV8vIYTIdSna11Vc54-abg33JtVZiiMfg Complete Java Programming Lectures - https://www.youtube.com/playlist?list=PLV8vIYTIdSnbL_fSaqiYpPh-KwNCavjIr Previous Years Solved Questions of Java - https://www.youtube.com/playlist?list=PLV8vIYTIdSnajIVnIOOJTNdLT-TqiOjUu Complete DBMS Video Lectures - https://www.youtube.com/playlist?list=PLV8vIYTIdSnYZjtUDQ5-9siMc2d8YeoB4 Previous Year Solved DBMS Questions - https://www.youtube.com/playlist?list=PLV8vIYTIdSnaPiMXU2bmuo3SWjNUykbg6 SQL Programming Tutorials - https://www.youtube.com/playlist?list=PLV8vIYTIdSnb7av5opUF2p3Xv9CLwOfbq PL-SQL Programming Tutorials - https://www.youtube.com/playlist?list=PLV8vIYTIdSnadFpRMvtA260-3-jkIDFaG Control System Complete Lectures - https://www.youtube.com/playlist?list=PLV8vIYTIdSnbvRNepz74GGafF-777qYw4
Man in the Middle Attack on Diffie-Hellman Key Exchange and Solution using Public-Key Certificates
 
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This video describes the man-in-the-middle attack on Diffie-Hellman Key Exchange with an Example and how to prevent it using public-key certificate
Views: 12624 Natarajan Meghanathan
DISI 2007: A Fool's Errand Inventing Public Key Cryptography.
 
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PhD. Martin Hellman, Stanford University USA. Keynote speaker at DISI 2007, Information Security International Day, December 3th 2007. E.U. Telecommunications Engineering, Technical University of Madrid, Spain. UPM Applus+ Information Society Security and Development Chair. Slides of Mr. Hellman talk: http://www.criptored.upm.es/descarga/DISI07_MartinHellman.zip Video produced by Cabinet of Tele-Education GATE, Technical University of Madrid.
Views: 1269 UPM
Lecture 13: Diffie-Hellman Key Exchange and the Discrete Log Problem by Christof Paar
 
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For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
RSA Algorithm and public key encryption | rivest shamir adleman algorithm
 
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This video lecture is produced by S. Saurabh. He is B.Tech from IIT and MS from USA. RSA Algorithm and public key encryption | rivest shamir adleman algorithm To study interview questions on Linked List watch http://www.youtube.com/playlist?list=PL3D11462114F778D7&feature=view_all To prepare for programming Interview Questions on Binary Trees http://www.youtube.com/playlist?list=PLC3855D81E15BC990&feature=view_all To study programming Interview questions on Stack, Queues, Arrays visit http://www.youtube.com/playlist?list=PL65BCEDD6788C3F27&feature=view_all To watch all Programming Interview Questions visit http://www.youtube.com/playlist?list=PLD629C50E1A85BF84&feature=view_all To learn about Pointers in C visit http://www.youtube.com/playlist?list=PLC68607ACFA43C084&feature=view_all To learn C programming from IITian S.Saurabh visit http://www.youtube.com/playlist?list=PL3C47C530C457BACD&feature=view_all
Views: 4918 saurabhschool
Elliptic Curve Cryptography & Diffie-Hellman
 
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Today we're going over Elliptic Curve Cryptography, particularly as it pertains to the Diffie-Hellman protocol. The ECC Digital Signing Algorithm was also discussed in a separate video concerning Bitcoin's cryptography.
Views: 50132 CSBreakdown
What is Cryptography? | Cryptography in 60 Seconds
 
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To learn more about Cryptography and other forms of encryption, we recommend you turn to an unbiased source of information. You can learn more about this subject by visiting the following websites. http://www.villanovau.com/resources/iss/what-is-cryptography/ or http://en.wikipedia.org/wiki/Cryptography What is Cryptography? Cryptography is the art of writing and solving codes. There are various forms of cryptography that includes public key encryption, secret key encryption, and other types of encryption. This subject expands from classic computer era encryption to cryptanalysis in the modern era. In this video, we briefly cover three types of cryptographic encryption in 60 seconds.
Views: 2990 60SecondEDU
Diffie-hellman key exchange | Journey into cryptography | Computer Science | Khan Academy
 
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Walkthrough of Diffie-Hellman Key Exchange Watch the next lesson: https://www.khanacademy.org/computing/computer-science/cryptography/modern-crypt/v/intro-to-rsa-encryption?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson? https://www.khanacademy.org/computing/computer-science/cryptography/modern-crypt/v/discrete-logarithm-problem?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: 221772 Khan Academy Labs
Encryption RSA
 
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Creating an app capable of generating values of public and private keys as well as encrypting and decrypting ciphertext messages based on two prime number inputs using the foundational principles of asymmetric key RSA encryption. Special thanks to Khan Academy for several reference points throughout the video!!! 3:26: N is NOT part of the private key. 5:11: On powerpoint: 9, 6, and 3 all share factors with 9; 8, 7, 5, 4, 2, and 1 don't share factors with 9 that are greater than 1. 10:00: Video gets a little spotty here, so in case you can't hear, she's saying "It's easy to compute D given the value of Phi N, however . . ." By: Sofia Flynn
Views: 1424 Sofia Flynn
NETWORK SECURITY - DIGITAL SIGNATURE ALGORITHM (DSA)
 
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Digital Signature : If the Sender Private key is used at encryption then it is called digital signature. This digital Signature is implemented two approaches 1) RSA Approach 2) DSS Approach.
Diffie-hellman key exchange algorithm
 
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This video helps in understading deffie-hellman key exchange. You can access ppt using link https://drive.google.com/folderview?id=0B04GruwlNQdZfjlPVTdGbUV6VzR0SlNJdjZqN2xBZ3pRWlA3YXRna0pyNHVmT1RweWJ2R3c&usp=sharing
Views: 330 ayush anand
Public-Key Cryptography & Authentication ☆ IT Lecture
 
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lll➤ Gratis Crypto-Coins: https://crypto-airdrops.de ) More about MAC and hash functions for authentication and Introduction to public key cryptography in this IT Lecture. Public-key cryptography, also known as asymmetric cryptography, is a class of cryptographic algorithms which require two separate keys, one of which is secret (or private) and one of which is public. http://en.wikipedia.org/wiki/Public-key_cryptography This video was made ​​by another YouTube user and made available for the use under the Creative Commons licence "CC-BY". His channel can be found here: https://www.youtube.com/user/StevesLectures
Public Key Crypto and Digital Signatures (ITS335, L6, Y14)
 
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Public key cryptography for authentication, digital signatures, key distribution. Course material via: http://sandilands.info/sgordon/teaching
Views: 542 Steven Gordon
Quantum Key Distribution: Provably Secure Encryption
 
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Hackers steal data constantly, so protecting it is an ongoing challenge. Today's information encryption technology has been compromised and will be obsolete in just a few years. Quantum Key Distribution (QKD) technology can be proven by the laws of physics to help secure the sensitive data we deliver—today and into the future.
Views: 21120 BattelleInnovations
How does the RSA algorithm work? - RSA Algorithm in Cryptography with Example and Easy way [DSA]
 
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How does the RSA algorithm work? - RSA Algorithm in Cryptography,Example,Concept rsa algorithm,example ,What is a RSA key? rsa algorithm steps,rsa algorithm tutorialspoint, algorithm example with solution rsa algorithm in c rsa algorithm pdf rsa algorithm in java rsa algorithm ppt RSA key is a private key based on RSA algorithm. Private Key is used for authentication and a symmetric key exchange during establishment of an SSL/TLS session. It is a part of the public key infrastructure that is generally used in case of SSL certificates. About US: Chulo is tech channel,it lets you know about technology update tutorials on web designing,application development and game development. Entrepreneurship,startup and family bussiness and giving you answers of building successful. How to Protect Facebook ::::: https://www.youtube.com/watch?v=EI4qh... Get our App from this link :https://drive.google.com/open?id=0B6U... RoadMap For Front End,Back End and DevOps 2017 - New Framework and tools ======================================================https://www.youtube.com/watch?v=-cZiM... How To Get 10K Views Within 3 Day l How To Get More Views On Youtube Videos l 100% Working😎😎 😎 https://www.youtube.com/watch?v=IZTLQ... How To Make My Phone Number a Private Number || Easy and 100% working https://www.youtube.com/watch?v=ScL5J... How to Make Mozilla Brower 500 times Faster than Google Chrome 2017 https://www.youtube.com/watch?v=A1ZpU... Share, Support, Subscribe!!! ==================================================== Do you want to miss the video and not be updated on what's going on technology,then don't subscribe otherwise if you are better person than subscribe ^__^ Youtube: https://www.youtube.com/channel/UCKWJ... Twitter: http://www.twitter.com/@CHULO369
Views: 574 CHULO
Public Key Crypto and Digital Signatures (ITS335, Lecture 6, 2013)
 
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Public key cryptography and digital signatures. Lecture 6 of ITS335 IT Security at Sirindhorn International Institute of Technology, Thammasat University. Given on 28 November 2013 at Bangkadi, Pathumthani, Thailand by Steven Gordon. Course material via: http://sandilands.info/sgordon/teaching
Views: 1954 Steven Gordon
RSA: Key Generation / Encryption / Decryption - شرح بالعربي
 
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شرح كامل للتشفير و فك التشفير وعمل المفتاح عن طريق شيفرة RSA بطريقة مبسطة مع حل مثال. - سيف بدران Information Security and Privacy - RSA Cipher Key Creation + Encyption + Decryption Fully Explained with Example. Done By: Saif Badran http://www.facebook.com/saif.badran iTeam Academic Group - JU
Views: 55157 iAcademy
Probably The Best public key cryptography Guide To Date
 
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Download this free Probably The Best public-key cryptography Guide To Date Powerpoint here: https://theartofservice.com Complete Toolkit at https://store.theartofservice.com/the-public-key-cryptography-toolkit.html While Diffie and Hellman could not find such a system, they showed that public-key cryptography was indeed possible by presenting the Diffie–Hellman key exchange protocol, a solution that is now widely used in secure communications to allow two parties to secretly agree on a shared encryption key.
Views: 17 TheArtofService
Lecture 6: Data Encryption Standard (DES): Key Schedule and Decryption by Christof Paar
 
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For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
cryptography with case study
 
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Symmetric Key Cryptography | Asymmetric Cryptography | AES | Advanced Encryption Standard | Case Study : Win-Zip 14.0 | Case Study : Win-Zip
Views: 38 Krati Mittal
[Hindi] Explain  Cryptography - Encryption - Decryption - Private key - Public key
 
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[Hindi] Explain Cryptography - encryption - Decryption - Private key - Public key Friends in this video I explain what is cryptography in Hindi . I also explain what is encryption , decryption ,private key , public key etc . ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- DISCLAIMER The information provided in this video is to be used for educational purpose only. The video creater in no way responsible for any misuse of the information provided . All of the information in this video is meant to hep the viewer develop a hacker defence attitude in order to prevent tha attack discussed. In noway should you use the information to cause any kind of damage directly or indirectly . The word hack or hacking in this video should be regarded as ethical hack or ethical hacking respecively. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- NOTE : All content used is copyright to TECHACKTRICK, Use or commercial display or editing of the content without proper authorization is not allowed. THANK YOU..
Views: 278 techacktrick
Diffie-Hellman Key Exchange Algorithm With Example
 
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Diffie Hellman key Exchange algorithm with an example is explained in the above video.Diffie Hellman key Exchange algorithm is used to transfer keys or exchange keys between two partners.Diffie Hellman key Exchange algorithm is a public key exchange type of algorithm.Diffie Hellman key Exchange algorithm is widely used in situations where eavesdropping is present. i.e. the medium across which information is sent can be hacked easily and information can be obtained.Diffie-Hellman key exchange algorithm does not have an effect of eavesdropping and hence it becomes a secure mode of transmission of key.Thus key can be exchanged using the Diffie-Hellman key exchange algorithm.In this video I have tried to explain the algorithm.After explaining the Diffie Hellman key Exchange algorithm I have also put an example for better understanding.What makes Diffie Hellman key Exchange algorithm so powerful? What are the conditions which are to be checked before key exchange? These things have also been explained in the video.The example explained in the video will easily remove doubts about the Diffie Hellman key exchange algorithm.I hope you liked the video.
Views: 26883 denil saviour
Quantum cryptography, animated
 
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This animation by the Centre for Quantum Technologies at the National University of Singapore illustrates the process of quantum key distribution using entangled photons. The goal is for two people in different places to end up with identical keys by measuring these photons. We want these people - usually given the names Alice and Bob - to have a random sequence of 1s and 0s that they can use to scramble (and then unscramble) a message. The presence of entanglement between the photons means that any snooping will be revealed. Note: this animation has no sound. See also our video series on cryptography: https://www.youtube.com/playlist?list=PL4CHL5j4XhurVKJz16Qg6qj0toMHyLh7q
Information & Network Security Lecture -- DES simple Explanation (Eng-Hindi)
 
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-~-~~-~~~-~~-~- Please watch: "PL vs FOL | Artificial Intelligence | (Eng-Hindi) | #3" https://www.youtube.com/watch?v=GS3HKR6CV8E -~-~~-~~~-~~-~-
Views: 89417 Well Academy
Information & Network Security Lecture --  AES (Eng-Hindi)
 
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-~-~~-~~~-~~-~- Please watch: "PL vs FOL | Artificial Intelligence | (Eng-Hindi) | #3" https://www.youtube.com/watch?v=GS3HKR6CV8E -~-~~-~~~-~~-~-
Views: 92770 Well Academy
Identity Based Encryption from the Diffie Hellman Assumption
 
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Paper by Nico Döttling and Sanjam Garg, presented at Crypto 2017. See https://iacr.org/cryptodb/data/paper.php?pubkey=28232
Views: 1644 TheIACR
What is QUANTUM CRYPTOGRAPHY? What does QUANTUM CRYPTOGRAPHY mean?
 
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What is QUANTUM CRYPTOGRAPHY? What does QUANTUM CRYPTOGRAPHY mean? QUANTUM CRYPTOGRAPHY meaning - QUANTUM CRYPTOGRAPHY definition - QUANTUM CRYPTOGRAPHY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Quantum cryptography is the science of exploiting quantum mechanical properties to perform cryptographic tasks. The best known example of quantum cryptography is quantum key distribution which offers an information-theoretically secure solution to the key exchange problem. Currently used popular public-key encryption and signature schemes (e.g., RSA and ElGamal) can be broken by quantum adversaries. The advantage of quantum cryptography lies in the fact that it allows the completion of various cryptographic tasks that are proven or conjectured to be impossible using only classical (i.e. non-quantum) communication (see below for examples). For example, it is impossible to copy data encoded in a quantum state and the very act of reading data encoded in a quantum state changes the state. This is used to detect eavesdropping in quantum key distribution. History: Quantum cryptography uses Heisenberg's uncertainty principle formulated in 1927, and the No-cloning theorem first articulated by Wootters and Zurek and Dieks in 1982. Werner Heisenberg discovered one of the fundamental principles of quantum mechanics: "At the instant at which the position of the electron is known, its momentum therefore can be known only up to magnitudes which correspond to that discontinuous change; thus, the more precisely the position is determined, the less precisely the momentum is known, and conversely” (Heisenberg, 1927: 174–5). This simply means that observation of quanta changes its behavior. By measuring the velocity of quanta we would affect it, and thereby change its position; if we want to find a quant's position, we are forced to change its velocity. Therefore, we cannot measure a quantum system's characteristics without changing it (Clark, n.d.) and we cannot record all characteristics of a quantum system before those characteristics are measured. The No-cloning theorem demonstrates that it is impossible to create a copy of an arbitrary unknown quantum state. This makes unobserved eavesdropping impossible because it will be quickly detected, thus greatly improving assurance that the communicated data remains private. Quantum cryptography was proposed first by Stephen Wiesner, then at Columbia University in New York, who, in the early 1970s, introduced the concept of quantum conjugate coding. His seminal paper titled "Conjugate Coding" was rejected by IEEE Information Theory Society, but was eventually published in 1983 in SIGACT News (15:1 pp. 78–88, 1983). In this paper he showed how to store or transmit two messages by encoding them in two "conjugate observables", such as linear and circular polarization of light, so that either, but not both, of which may be received and decoded. He illustrated his idea with a design of unforgeable bank notes. In 1984, building upon this work, Charles H. Bennett, of the IBM's Thomas J. Watson Research Center, and Gilles Brassard, of the Université de Montréal, proposed a method for secure communication based on Wiesner's "conjugate observables", which is now called BB84. In 1991 Artur Ekert developed a different approach to quantum key distribution based on peculiar quantum correlations known as quantum entanglement. Random rotations of the polarization by both parties (usually called Alice and Bob) have been proposed in Kak's three-stage quantum cryptography protocol. In principle, this method can be used for continuous, unbreakable encryption of data if single photons are used. The basic polarization rotation scheme has been implemented. The BB84 method is at the basis of quantum key distribution methods. Companies that manufacture quantum cryptography systems include MagiQ Technologies, Inc. (Boston, Massachusetts, United States), ID Quantique (Geneva, Switzerland), QuintessenceLabs (Canberra, Australia) and SeQureNet (Paris, France).
Views: 1224 The Audiopedia
How SSL works tutorial - with HTTPS example
 
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How SSL works by leadingcoder. This is a full tutorial how to setup SSL that requires client certificate for reference: http://www.windowsecurity.com/articles/Client-Certificate-Authentication-IIS6.html .
Views: 1363043 tubewar
INTRODUCTION TO CRYPTOGRAPHY IN HINDI
 
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find relevant notes at-https://viden.io/
Views: 57865 LearnEveryone
Quantum Cryptography Explained
 
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This episode is brought to you by Squarespace: http://www.squarespace.com/physicsgirl With recent high-profile security decryption cases, encryption is more important than ever. Much of your browser usage and your smartphone data is encrypted. But what does that process actually entail? And when computers get smarter and faster due to advances in quantum physics, how will encryption keep up? http://physicsgirl.org/ ‪http://twitter.com/thephysicsgirl ‪http://facebook.com/thephysicsgirl ‪http://instagram.com/thephysicsgirl http://physicsgirl.org/ Help us translate our videos! http://www.youtube.com/timedtext_cs_panel?c=UC7DdEm33SyaTDtWYGO2CwdA&tab=2 Creator/Editor: Dianna Cowern Writer: Sophia Chen Animator: Kyle Norby Special thanks to Nathan Lysne Source: http://gva.noekeon.org/QCandSKD/QCand... http://physicsworld.com/cws/article/n... https://epic.org/crypto/export_contro... http://fas.org/irp/offdocs/eo_crypt_9... Music: APM and YouTube
Views: 265693 Physics Girl
Elliptic Curve Diffie Hellman
 
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A short video I put together that describes the basics of the Elliptic Curve Diffie-Hellman protocol for key exchanges.
Views: 108299 Robert Pierce
PKI Training: Cryptography Basics Part 2
 
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Covers Symmetric Cryptography, Asymmetric Cryptography, and Digital Signatures Posted at: http://blogs.technet.com/b/xdot509/
Views: 1723 chdelay
GTU INS Unit 8 Key Management and Distribution
 
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In this video , i discussed about GTU INS Unit 8 Key Management and Distribution. you Can find Unit PPT on Below Google Drive LInk https://drive.google.com/drive/folders/0B3F0L2_uTazMYVFlX0E0ZXJEN0k?usp=sharing For any Query you can mail me on [email protected] Feel Free to Share
Views: 1255 ANKIT CHOUHAN

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