Home
Search results “Symmetric vs asymmetric cryptography algorithms”

06:14
http://zerotoprotraining.com This video provides and overview of Symmetric and Asymmetric Encryptions including the concepts of public and private keys (PKI)
Views: 104617 HandsonERP

04:18
Views: 61969 Professor Messer

04:40
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

06:45
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: 440768 itfreetraining

06:07
Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Frequently Asked Questions: http://professormesser.link/faq - - - - - If you’re planning to implement cryptography, then you’ll probably be using either symmetric encryption or asymmetric encryption. In this video, you’ll learn about both of these valuable encryption mechanisms. - - - - - Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 13393 Professor Messer

19:32
Lesson 2 of cryptography series (to see all video check cryptography playlist - link given below). cryptography playlist : https://www.youtube.com/watch?v=_Yw7QWbk9Vs&list=PLf8bMP4RWebLVGpUnhji9Olkj1jdXfzFd Subscribe to our new youtube channel also : https://www.youtube.com/channel/UCNx1Gkyy9LfOxDMbcOKuV4g symmetric vs asymmetric ( public key ) cryptography symmetric key vs assymetric key encryption advantages of symmetric key cryptography advantages of assymetric cryptography concept of digital signatures safe and secure communication between systems encrypted communication between systems like us on facebook : https://www.facebook.com/guidetohacking/ #symmetric #asymmetric #public #key #cryptography #encryption
Views: 41617 Hacks And Security

04:37
Difference between Asymmetric Key and Symmetric Key Cryptography Keywords: Asymmetric Key Cryptography Symmetric Key Cryptography Network Security Notes

02:12
Our "Cryptography Explained" video breaks down how cryptography works in blockchain and highlight the differences between public-key cryptography vs. symmetric cryptography. Cryptography is the method of disguising and revealing information, through complex mathematics. Any piece of information can be encrypted, making it impossible to read, except for by the intended recipient. 👩‍🎓👨‍🎓Learn blockchain fast at the Lisk Academy: https://lisk.io/academy Thanks for watching! Lisk makes it easy for developers to build and deploy blockchain applications in JavaScript. Learn about the leading platform for world-changing dapps at https://lisk.io/products. 🗞Read our latest news on the Lisk Blog: https://blog.lisk.io/ 💼 Check our current job openings! https://angel.co/lisk 👚👕 Lisk t-shirts now available: https://merch.lisk.io/ 👩‍🚀👨‍🚀 Meet the team: https://lisk.io/team 🔒 Store your LSK in our official wallet: https://github.com/LiskHQ/lisk-hub/releases/latest 🔎 View our blockchain explorer: https://explorer.lisk.io/ 🎥 For media inquiries, please email us at press [at] lisk [dot] io. 👫Join our community channels: Reddit: http://reddit.com/r/lisk Twitter: http://twitter.com/liskhq Telegram: https://t.me/Lisk_HQ Lisk.chat: https://lisk.chat/ Instagram: http://instagram.com/liskhq Facebook: http://facebook.com/liskhq LinkedIn: https://www.linkedin.com/company/lisk/ 👨‍💻👩‍💻 For developers: GitHub: https://github.com/LiskHQ Gitter: https://gitter.im/LiskHQ/lisk Documentation: https://lisk.io/documentation
Views: 3130 Lisk

04:45
Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Frequently Asked Questions: http://professormesser.link/faq - - - - - Symmetric ciphers are some of the most commonly used encryption methods on the Internet. In this video, you’ll learn about DES, 3DES, RC4, AES, Blowfish, and Twofish. - - - - - Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 8718 Professor Messer

04:20
See our entire index of CompTIA Security+ videos at http://www.FreeSecurityPlus.com - The two most common encryption methods are symmetric and asymmetric encryption. In this video, you'll learn the differences and when you might to see these two methods employed to protect your data.
Views: 35217 Professor Messer

02:36
Views: 25066 Professor Messer

06:08
This Authentication training video is part of the CISSP FREE training course from Skillset.com (https://www.skillset.com/certifications/cissp). Skillset helps you pass your certification exam. Faster. Guaranteed. https://www.skillset.com Topic: Symmetric Key Cryptography Skill: Cryptography Fundamentals Skillset: Security Engineering Certification: CISSP Join the 40,000+ candidates in over 58 countries that have found a faster, better way to pass their certification exam. + Unlimited access to thousands of practice questions + Exam readiness score + Smart reinforcement + Focused training ensures 100% exam readiness + Personalized learning plan + Align exam engine to your current baseline knowledge + Eliminate wasted study time + Exam pass guarantee And much more - https://www.skillset.com
Views: 4474 Skillset

08:50
Get my Security+ Cert Guide! https://click.linksynergy.com/link?id=g//2PZbywdw&offerid=163217.2769094&type=2&murl=http%3A%2F%2Fwww.pearsonitcertification.com%2Ftitle%2F9780789758996&u1=secplusCGyoutube Security+ Study Page: https://www.sy0-501.com Gives a basic introduction to symmetric and asymmetric encryption algorithms. Describes how website certificates use RSA and AES protocols. - Supports the CompTIA Security+ SY0-401 Cert Guide 3rd Edition, available at Amazon at the following link: http://www.amazon.com/gp/product/0789753332/ref=as_li_tl?ie=UTF8&camp=211189&creative=373489&creativeASIN=0789753332&link_code=as3&tag=davlprostecbl-20&linkId=5A5J7ZXKELKWYM5N - See my main Security+ page for more information: http://www.SY0-401.com
Views: 8206 D Pro Computer

19:13
Thanks to all of you who support me on Patreon. You da real mvps! \$1 per month helps!! :) https://www.patreon.com/patrickjmt !! Part 1: https://youtu.be/PkpFBK3wGJc Please consider being a supporter on Patreon! https://www.patreon.com/patrickjmt Twitter: @Patrick_JMT In this video I show mathematically for RSA encryption works by going through an example of sending an encrypted message! If you are interested in seeing how Euclid's algorithm would work, check out this video by Emily Jane: https://www.youtube.com/watch?v=fz1vxq5ts5I A big thanks to the 'Making & Science team at Google' for sponsoring this video! Please like and share using hashtag #sciencegoals
Views: 37039 patrickJMT

11:17
#amartechstuff Interview Questions -Symmetric Vs Asymmetric Encryption Algorithm
Views: 51 amartechstuff

04:57
In this Video, Dr. Seema Batra, Assistant professor, Biyani Groups of Colleges, Jaipur, explains about the concept of symmetric and asymmetric cryptography. http://www.gurukpo.com/ http://www.biyanicolleges.org/
Views: 12019 Guru Kpo

06:20

05:42
In this clip from the live online IINS 2.0 (CCNA Sec) course at StormWind.com, Anthony Sequeira explains the basic operation of symmetric and asymmetric encryption algorithms.
Views: 4301 StormWind Studios

11:18
Understand the working of Symmetric Key Cryptography and Asymmetric Key Cryptography in detail with working and difference between the 2 types. Symmetric Key Cryptography(Private Key Cryptography) - 1. In symmetric-key cryptography, the same key is used by the sender (for encryption) and the receiver(for decryption). 2. The key is shared. 3. The key is Secret and kept Private between the Sender & Receiver 4. For N users in a network the number of keys required is - N(N-1)/2 Asymmetric Key Cryptography(Public Key Cryptography) 1. In asymmetric-key cryptography, 2 different keys are used. 1 for Encryption & 1 for Decryption. 2. Every communicating party needs just a key pair. 3. One of the two keys is called as Public Key and the other is the Private Key. 4. Private key remains as a secret. Public key is for the general public. 5. Only the corresponding public private key pair and encrypt and decrypt messages and no other key can be used. 6. For N users in a network the number of keys required is - N*2. Complete Network Security / Information Security Playlist - https://www.youtube.com/watch?v=IkfggBVUJxY&list=PLIY8eNdw5tW_7-QrsY_n9nC0Xfhs1tLEK Download my FREE Network Security Android App - https://play.google.com/store/apps/details?id=com.intelisenze.networksecuritytutorials Simple Snippets Official Website - https://simplesnippets.tech/ Simple Snippets on Facebook - https://www.facebook.com/simplesnippets/ Simple Snippets on Instagram - https://www.instagram.com/simplesnippets/ Simple Snippets on Twitter - https://twitter.com/simplesnippet Simple Snippets Google Plus Page - https://plus.google.com/+SimpleSnippets Simple Snippets email ID - [email protected] For More Technology News, Latest Updates and Blog articles visit our Official Website - https://simplesnippets.tech/
Views: 405 Simple Snippets

06:20
Spies used to meet in the park to exchange code words, now things have moved on - Robert Miles explains the principle of Public/Private Key Cryptography note1: Yes, it should have been 'Obi Wan' not 'Obi One' :) note2: The string of 'garbage' text in the two examples should have been different to illustrate more clearly that there are two different systems in use. http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels
Views: 405702 Computerphile

03:35
Symmetric and Asymmetric Key Cryptography Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Arnab Chakraborty, Tutorials Point India Private Limited

14:14
Suitable for iGCSE, AS and A2 CIE Computer Science
Views: 76 Ian Simpson

14:14
This video is about symmetric vs asymmetric encryption
Views: 407 Ian Simpson

07:51
OCR Specification Reference A Level 1.3.1c Why do we disable comments? We want to ensure these videos are always appropriate to use in the classroom. However, we value your feedback, and are happy to consider amendments due to inaccuracies. Please get in touch with us directly at: [email protected] For full support and additional material please visit our web site http://craigndave.org
Views: 6149 craigndave

08:40
Views: 168396 Eddie Woo

02:58
https://8gwifi.org/CipherFunctions.jsp Reference book: http://leanpub.com/crypto Cryptographic Algorithms generally fall into one of two different categories, or are a combination of both. Symmetric Fast Only provide confidentiality Examples: DES, AES, Blowfish, RC4, RC5 Asymmetric Large mathematical operations make it slower than symmetric algorithms No need for out of band key distribution (public keys are public!) Scales better since only a single key pair needed per individual Can provide authentication and nonrepudiation Examples: RSA, El Gamal, ECC, Diffie-Hellman problem with symmetric key cryptography DES (Data Encryption Standard) 64 bit key that is effectively 56 bits in strength Actual algorithm is called DEA (Data Encryption Algorithm) DES Modes Electronic Code Book Cipher Block Chaining (most commonly used for general purpose encryption) Cipher Feedback Output Feedback Counter Mode (used in IPSec) 3DES 112-bit effective key length Uses either 2 or 3 different smaller keys in one of several modes Modes EEE2/3 EDE2/3 AES NIST replaced DES in 1997 with this Uses the Rijndael algorithm Supports key/block sizes of 128, 192, and 256 bits Uses 10/12/14 rounds as block size increases IDEA (International Data Encryption Algorithm) Operates on 64 bit blocks in 8 rounds with 128 bit key Considered stronger than DES and is used in PGP Blowfish 64 bit block cipher with up to 448 bit key and 16 rounds Designed by Bruce Schneier RC4 Stream cipher with variable key size created by Ron Rivest RC5 Another Rivest cipher Block cipher with 32/64/128 bit blocks and keys up to 2048 bits RC6 Beefier version of RC5 submitted as AES candidate CAST 64 bit block cipher with keys between 40-128 bits with 12-16 rounds depending on key length CAST-256 used 128-bit blocks and keys from 128-256 bits using 48 rounds SAFER (Secure and Fast Encryption Routine) Set of patent-free algorithms in 64 and 128 bit block variants Variation used in Bluetooth Twofish Adapted version of Blowfish with 128 bit blocks, 128-256 bit keys and 16 rounds AES Finalist Kryptografie mit symmetrischem Schlüssel symmetric key cryptography symmetric key cryptography tutorial symmetric key cryptography example symmetric key cryptography vs asymmetric key cryptography symmetric and asymmetric key cryptography symmetric key cryptography Kryptografie mit symmetrischem Schlüssel Kryptographie mit symmetrischem Schlüssel Kryptographie mit symmetrischem Schlüssel Kryptografie mit symmetrischem Schlüssel und asymmetrische Schlüsselkryptographie symmetrische und asymmetrische Schlüsselkryptographie Kryptografie mit symmetrischem Schlüssel
Views: 39234 Zariga Tongy

05:06
In public key encryption, two different keys are used to encrypt and decrypt data.One is the public key and other is the private key. These two keys are mathematically related. They come as a pairs. The public key encryption is also called asymmetric key encryption because two different keys are used. Public key algorithm is used for different purpose from private key algorithm. It is used for verification and authentication. In this video, I will use an example to demonstrate how to use public key. Playlist: Basic Cryptography https://www.youtube.com/watch?v=vk3py9M2IfE&list=PLSNNzog5eyduN6o4e6AKFHekbH5-37BdV Advanced Cryptography: https://www.youtube.com/watch?v=TmA2QWSLSPg&list=PLSNNzog5eydtwsdT__t5WtRgvpfMzpTc7 Please leave comments, questions and please subscribe!
Views: 26143 Sunny Classroom

04:52
In private key encryption, data is encrypted using a single same key that only the sender and the receiver know. That is why private key encryption is also called symmetric key encryption because the same key is used during both encryption and decryption of the transmitted data. In this video, I will also use an example to demonstrate the process of using private key encryption. Two different methods -stream encryption and block encryption- of private key algorithm are also depicted with animation. Playlist: Basic Cryptography https://www.youtube.com/watch?v=vk3py9M2IfE&list=PLSNNzog5eyduN6o4e6AKFHekbH5-37BdV Advanced Cryptography: https://www.youtube.com/watch?v=TmA2QWSLSPg&list=PLSNNzog5eydtwsdT__t5WtRgvpfMzpTc7 Please leave comments, questions and please subscribe!
Views: 16773 Sunny Classroom

49:01
AES algorithm is the Block Cipher Symmetric Algorithm Block Size is 128 bits Key Size is 128 bits ( 4 words or 16 Bytes ) Sub Key Size is 1 Word (32 bit) Number of Sub keys 44 Words Number of Rounds 10 Cipher Text Size is 128 bits

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: 523574 Art of the Problem

13:17
Views: 13801 Ryan Riley

05:04
Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Frequently Asked Questions: http://professormesser.link/faq - - - - - Asymmetric encryption has enabled the exchange of symmetric keys, encryption of data, digital signatures, and other significant security features. In this video, you’ll learn about these asymmetric algorithms and their use. - - - - - Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 8504 Professor Messer

10:10
Crypography Algorithm helps in making our data secure while transmitting on internet. To do that we can follow number of method. 1. Symmetric key or Secret key DES: Data encryption standard Triple DES AES: Advanced encryption standard 2. Asymmetric key or public key RSA : Divest Shamir and Adleman Duffie- Hellman Solved example: UGC NET July 2013 exam questions

03:19
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: 200758 Veet Vivarto

03:34
AES, DES, RSA, ECC -- there are so many ways to encrypt your data. Whether your company's protecting customer credit card information, securing remote user connections to your network or protecting your intellectual property from digital piracy, you're using encryption every day. But crypto can be intimidating to the uninitiated, and there are a daunting array of options. In the 1980s, there was only one real choice -- the Data Encryption Standard (DES). That's changed. Today, we have a broad selection of stronger, faster and better-designed algorithms. Now, the problem is to sort out the choices. But what's the difference? How do you know if you're buying industrial-strength protection or if your developers are choosing the right encryption algorithms for the job? Where do you begin to make sense of it all? Start right here. This primer will help you decipher the jumble of TLAs (three-letter acronyms) that define encryption basics that you need to know to pass the ISC2 CISSP exam. FOLLOW ME: Website: https://arecyber.com Twitter: https://twitter.com/artofwar73 Facebook: @arecyberllc Instagram: https://www.instagram.com/arecyberllc Visualize Success and you will Succeed! -~-~~-~~~-~~-~- Please watch: "How To Pass The CISSP" https://www.youtube.com/watch?v=Qw8sYsO153s -~-~~-~~~-~~-~-
Views: 887 ARECyber LLC

11:27
Follow our channel at http://vid.io/xomJ Visit our web page at http://vid.io/xomQ In this video I describe how Bob can send a secret message to Alice without Eve getting its content. With asymmetric keys, symmetric encryption and signing they achieve message confidentiality, message integrity, non-repudiation and secure distribution of encryption keys.
Views: 692 nat0.net

02:27
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 9112 Udacity

32:28
There are four ways to distribute the public keys among the users. 1) Public Announcement 2) Public Key Directory 3) Public Key Authority 4) Certificate Authority

05:29
Views: 3733 nirmal jeyaraj

07:13
In this video I will talk about Symmetric and Asymmetric Encryption techniques. #Symmetric #Asymmetric #Encryption What is SSL/TLS - Part 1: https://youtu.be/_YBBk_rwmOw Become an expert at using JIRA 7 through this one-stop guide! by reading my book "Mastering Jira 7 - Second Edition" This book provides a comprehensive explanation covering all three components of Jira 7, such as Jira Software, Jira Core, and Jira Service Desk. It shows you how to master the key functionalities of JIRA and its customizations and useful add-ons, and is packed with real-world examples and use cases. http://www.RaviSagar.in/MasteringJira7 https://www.linkedin.com/in/ravisagar/
Views: 52 Ravi Sagar

01:09
Asymmetrical cryptography uses the same pair of keys for encryption and decryption. Differing from symmetric key algorithms, asymmetrical cryptography requires the use of public keys and private keys. A set or pair of keys consists of a public key and a private key. Messages encrypted using the public key can only be decrypted by the paired private key. Asymmetrical cryptography is more secure than symmetric key algorithms. In symmetric key algorithms, both parties share the same secret key. If one party’s secret key is exposed, it would compromise the encryption. Asymmetrical cryptography uses a pair of keys, one for encryption and one for decryption. The public key is widely accessible while the private key is known only to the owner. There is no need to exchange private keys prior to transacting, therefore preventing data theft by hackers. Huobi Global Exchange: https://www.huobi.com Follow us on: Blog: https://blog.huobi.com/ Facebook: https://www.facebook.com/huobiglobalofficial Instagram: https://www.instagram.com/huobiglobalofficial Medium: https://medium.com/@huobiglobal Telegram: https://t.me/huobiglobalofficial Twitter: https://twitter.com/HuobiGlobal Youtube: https://www.youtube.com/HuobiGlobal
Views: 221 Huobi Global

11:19
How do i securely transfer information over a connection. The theory of Symmetric and Asymmetric Key Encryption. Checkout This explanation in: https://tankoedward.wordpress.com/2018/03/26/symmetric-and-asymmetric-encryption/
Views: 87 CodeWithEddy

17:38
Fundamentals of Computer Network Security This specialization in intended for IT professionals, computer programmers, managers, IT security professionals who like to move up ladder, who are seeking to develop network system security skills. Through four courses, we will cover the Design and Analyze Secure Networked Systems, Develop Secure Programs with Basic Cryptography and Crypto API, Hacking and Patching Web Applications, Perform Penetration Testing, and Secure Networked Systems with Firewall and IDS, which will prepare you to perform tasks as Cyber Security Engineer, IT Security Analyst, and Cyber Security Analyst. course 2 Basic Cryptography and Programming with Crypto API: About this course: In this MOOC, we will learn the basic concepts and principles of cryptography, apply basic cryptoanalysis to decrypt messages encrypted with mono-alphabetic substitution cipher, and discuss the strongest encryption technique of the one-time-pad and related quantum key distribution systems. We will also learn the efficient symmetric key cryptography algorithms for encrypting data, discuss the DES and AES standards, study the criteria for selecting AES standard, present the block cipher operating modes and discuss how they can prevent and detect the block swapping attacks, and examine how to defend against replay attacks. We will learn the Diffie-Hellman Symmetric Key Exchange Protocol to generate a symmetric key for two parties to communicate over insecure channel. We will learn the modular arithmetic and the Euler Totient Theorem to appreciate the RSA Asymmetric Crypto Algorithm, and use OpenSSL utility to realize the basic operations of RSA Crypto Algorithm. Armed with these knowledge, we learn how to use PHP Crypto API to write secure programs for encrypting and decrypting documents and for signing and verify documents. We then apply these techniques to enhance the registration process of a web site which ensures the account created is actually requested by the owner of the email account. Asymmetric Key Cryptography In this module we will learn the modular arithmetic, the Euler Totient Theorm, the RSA Asymmetric Crypto Algorithm, use OpenSSL to realize the basic operations of RSA Crypto Algorithm, and Diffie-Hellman Symmetric Key Exchange Protocol to derive session keys. Learning Objectives • Use Diffi-Hellman algorithm for Key Exchange • Apply RSA with OpenSSL for signing and encryption • Describe RSA Asymmetric Crypto Algorithm Subscribe at: https://www.coursera.org
Views: 49 intrigano

15:28
This video is part of a larger online course, "From Barter to Bitcoin: Society, Technology and the Future of Money" run by Prof. Bill Maurer and Prof. Donald J. Patterson In addition to the video on YouTube there is a variety of other content available to students enrolled in the class. "In 2008, a person calling himself or herself or themselves Satoshi Nakamoto released a paper suggesting a system for an anonymous, peer-to-peer alternative money. Bitcoin was born. Although not the first digital currency ever proposed, nor the first challenger to fiat money, bitcoin is the first to have captured the broad imagination of speculators, coders, regulators, criminals and the mass media. This course puts Bitcoin in context: how do we understand money as a social, political and technological phenomenon? From discussions of ancient transactions to the rise of state-issued currencies, we will explore the social and technical aspects of bitcoin, its predecessors and potential successors, and how its features echo aspects of many different historical transaction systems. No prior knowledge of economics or computing is required. There is little academic writing on bitcoin. And this may be the first truly academic class on the topic. We want to put bitcoin in a wider perspective, to reflect on what it means for society, politics and economics, as well as how it helps us think about money both a social and a technical phenomenon. This class is not an advanced seminar on bitcoin--we will not be delving deeply into the inner workings of the system, but instead providing a bird's-eye overview with enough technical detail for you to be able to put media stories, hype and hope around bitcoin in perspective. Similarly, this is not a class in monetary economics--we won't go too deeply into monetary theory or policy, the money supply, or inflation. Instead the class invites you to think more deeply about one of the oldest systems of technology on the planet, and most ubiquitous: money, whether coin, cash, credit card or cryptocurrency, we humans have been making money for most of the past 10,000 years. How we do so in the future is a question bitcoin just maybe helps us answer."
Views: 40185 djp3

00:32
Views: 122 Phoenix TS

01:59
Asymmetric encryptionAsymmetric encryption or encryption using a public key is based on the use of a pair of keys -- a private and a public -- instead of one key only.The transmitted information can be encrypted both using a private and a public key; but only the private key is able to decrypt information. This means that a message encrypted with the public key can be decrypted only with a private one and vice versa.The private key is known only to the owner, and the public key - known to all correspondents. In addition to information confidentiality, this encryption technique also solves the authentication tasks.However, the asymmetric encryption algorithm is very much inferior to the symmetric encryption in terms of encryption time and message decryption. That's why both encryption techniques are often used in combination.The asymmetric algorithm is used to transfer a symmetric key that is used directly to encrypt the information transmitted. Another asymmetric encryption application is a digital signature.For example, someone received your message encrypted with your private key. In this event, an addressee can be sure that it is really you who sent the message. Actually, the digital or electronic signature is the method of authentication confirming that the message content was not changed. By the way, you can put a digital signature both in an open and in an encrypted message.
Views: 2052 ChipDipvideo

06:14
Imp for UGC NET and GATE
Views: 762 Gate Smashers

12:44
Ethical Sharmaji #6 [Hindi] Symmetric and Asymmetric Encryption? Advantages and Disadvantages? Algorithms? Examples? Don't forget to Hit the Subscribe Button Below: https://bit.ly/2ssLR3k Cryptography and Encryption/Decryption Video : https://youtu.be/XtOfZeGPpI4 ------------------------------------------------------------ Introduction Video:https://youtu.be/mSqL7FzY5_o Episode 1:https://youtu.be/L8xqXDA4qMc Episode 2:https://youtu.be/iMcFAHH2crQ Episode 3:https://youtu.be/rBDl6A2tmtI Episode 4:https://youtu.be/_GUBzpnDnSs Episode 5:https://youtu.be/XtOfZeGPpI4 Brute Force Attack:https://youtu.be/K9erLCRxfZ8 SQL Injection Attack:https://youtu.be/1-pcVWOT55E hackTalks:https://youtu.be/8NIT__pKFi8 ------------------------------------------------------------ Follow on Facebook:https://www.facebook.com/EthicalSharmaji ------------------------------------------------------------ Symmetric Encryption: Also known as a single key or shared key, symmetric encryption simply means one key is used both to encrypt and decrypt the data. So long as both the sender and the receiver know/have the secret key, communication can be encrypted between the two. In keeping with the old acronym K.I.S.S. (Keep It Simple, Stupid), the simplicity of symmetric encryption is its greatest asset—as you can imagine, this makes things very easy and very fast. Bulk encryption needs? Symmetric algorithms and techniques are your best bet. Asymmetric Encryption: Asymmetric encryption came about mainly because of the problem inherent in using a single key to encrypt and decrypt messages—just how do you share the key efficiently and easily without compromising the security? The answer was, of course, to simply use two keys. In this key pair system, both are generated together, with one key used to encrypt a message and the other to decrypt it. The encryption key, also known as the public key, could be sent anywhere, to anyone. The decryption key, known as the private key, is kept secured on the system. ------------------------------------------------------------ About: Ethical Sharmaji is a youtube channel for all those who want all ethical hacking stuff in one place. Videos are uploaded in Hindi language and in a manner which is easy to understand. As IBM rightly says that "CyberSecurity is a Gold Mine for jobs in India", so the goal of this channel is to provide knowledge to those who want to work in this field. ------------------------------------------------------------ For any queries feel free to comment or send a mail on [email protected] ------------------------------------------------------------ #SymmetricEncryption #AsymmetricEncryption #EthicalSharmaji #Cryptography
Views: 39 Ethical Sharmaji

09:31
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

06:42