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Cryptography basics: What is Encryption and Decryption
 
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Get Full Course: http://www.engineeringmentor.com/CNYTv3 Networks #3: This tutorial introduces the Cryptography basics. It also explains what is Encryption and Decryption. a) Cryptography basics (00:21):http://youtu.be/BEb_AnPWPwY?t=21s how do we provide this security during transmission? Well, One way of ensuring security can be use of CRYPTOGRAPHY! Cryptography is a field of network security which deals with hiding "real" infromation when it is under transmission between the two parties. Usually, the real information is transformed or hidden into another message and transmitted over the network. This transformed message in itself will make no sense even if any hacker gets hold of this information. When it reaches the destination, the receipent will know a method to de-transform the garbage message into the original information which the sender had sent.method of transforming message at sender's side and de transforming at reciever's side forms the basic model of Cryptography. b) Encryption and Decryption (3:57):http://youtu.be/BEb_AnPWPwY?t=3m57s First, the information to be transmitted, called as plain text(or message) is fed to an Encryption system. The Encyrption system uses a key to convert the plain text to encyrpted form which looks like garbage value. This is also called as cipher text. A corresponding key is used at the other end to decrypt the cipher text back to original message. When we say a key, it actually means a piece of string value which is fed to encyprtion and decryption algorithms along with the text for transformation. When the message reaches the destination, this system at the other end decrypts the cipher text into original message with the help of the key. This is called as Decryption System. The output of the Decryption System is the intended message. Depending on how the keys are shared, we can classify crytography as symmetric and asymmetric. If the keys used by both parties are same, then it is called symmetric key cryptography, or private key cryptography. If both parties use different keys for encyrption and decryption, then it is called asymmetric key cryptography or public key cryptography. video URL : https://www.youtube.com/watch?v=BEb_AnPWPwY Watch ALL CN VIDEOS: https://www.youtube.com/playlist?list=PL9OIoIp8YySF4mkIihOb_j2HZIRIlYuEx For more, visit http://www.EngineeringMentor.com Facebook: https://www.facebook.com/EngineeringMentor Twitter : https://twitter.com/Engi_Mentor
Views: 91378 Skill Gurukul
INTRODUCTION TO CRYPTOGRAPHY IN HINDI
 
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find relevant notes at-https://viden.io/
Views: 53086 LearnEveryone
What is Cryptography - Introduction to Cryptography - Lesson 1
 
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In this video I explain the fundamental concepts of cryptography. Encryption, decryption, plaintext, cipher text, and keys. Learn Math Tutorials Bookstore http://amzn.to/1HdY8vm Donate - http://bit.ly/19AHMvX
Views: 81264 Learn Math Tutorials
NETWORK SECURITY - OVERVIEW OF CRYPTOGRAPHIC ALGORITHMS
 
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CRYPTOGRAPHIC ALGORITHMS 1.ENCRYPTION ALGORITHMS 2.AUTHENTICATION ALGORITHMS 3.DIGITAL SIGNATURE ALGORITHMS.
Principles of Network Security and Cryptography
 
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In this video tutorial we study the basic principles of Network security and also see the concept of Cryptography by understanding a basic example. Principles of Network Security to be discussed in this video are as follows: Confidentiality Authentication Integrity Non-repudiation Access Control Availability We will also learn the concept of Cryptography in this tutorial. Here's the definition of Cryptography: Cryptography is the art of achieving security by encoding messages to make them non-readable This video is a continuation of the previous video so make sure you check that video as well so that you get to know some basics of Network security. Download the FREE Network Security App on Google Playstore for Android - https://play.google.com/store/apps/details?id=com.intelisenze.networksecuritytutorials Simple Snippets on Facebook- https://www.facebook.com/simplesnippets/ Simple Snippets on Instagram- https://www.instagram.com/simplesnipp... Simple Snippets Google Plus Page- https://plus.google.com/+SimpleSnippets Simple Snippets email ID- [email protected] Download my FREE Network Security Android App - https://play.google.com/store/apps/details?id=com.intelisenze.networksecuritytutorials For Classroom Coaching in Mumbai for Programming & other IT/CS Subjects Checkout UpSkill Infotech - https://upskill.tech/ UpSkill is an Ed-Tech Company / Coaching Centre for Information Technology / Computer Science oriented courses and offer coacing for various Degree courses like BSc.IT, BSc.CS, BCA, MSc.IT, MSc.CS, MCA etc. Contact via email /call / FB /Whatsapp for more info email - [email protected] We also Provide Certification courses like - Android Development Web Development Java Developer Course .NET Developer Course Check us out on Social media platforms like Facebook, Instagram, Google etc Facebook page - https://www.facebook.com/upskillinfotech/ Insta page - https://www.instagram.com/upskill_infotech/ Google Maps - https://goo.gl/maps/vjNtZazLzW82
Views: 18749 Simple Snippets
Cryptography Definition and Terminology (CISSP Free by Skillset.com)
 
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This Cryptography Fundamentals 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: Cryptography Terminology 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: 5380 Skillset
Network Security - Basic Concepts Definitions & Types of Attacks
 
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This is a introductory video to a domain of Information technology that is Network security. Definition of Network Security: Network security is protection of the access to files, directories and information in a computer network against hacking, misuse and unauthorized changes to the system. In this video tutorial the basics of Network security, some definitions, terms and concepts. We've also covered some types of attacks that take place when Network security is not implemented properly. If you like the video give it a thumbs up and also share it with your friends. Do subscribe to our channel as you will get notified when we upload new video tutorials. If you have any suggestions or tips for us do post them in the comments section below we'll be happy to apply them for you. Peace Download my FREE Network Security Android App - https://play.google.com/store/apps/details?id=com.intelisenze.networksecuritytutorials Simple Snippets on Facebook- https://www.facebook.com/simplesnippets/ Simple Snippets on Instagram- https://www.instagram.com/simplesnipp... Simple Snippets Google Plus Page- https://plus.google.com/+SimpleSnippets Simple Snippets email ID- [email protected] For Classroom Coaching in Mumbai for Programming & other IT/CS Subjects Checkout UpSkill Infotech - https://upskill.tech/ UpSkill is an Ed-Tech Company / Coaching Centre for Information Technology / Computer Science oriented courses and offer coacing for various Degree courses like BSc.IT, BSc.CS, BCA, MSc.IT, MSc.CS, MCA etc. Contact via email /call / FB /Whatsapp for more info email - [email protected] We also Provide Certification courses like - Android Development Web Development Java Developer Course .NET Developer Course Check us out on Social media platforms like Facebook, Instagram, Google etc Facebook page - https://www.facebook.com/upskillinfotech/ Insta page - https://www.instagram.com/upskill_infotech/ Google Maps - https://goo.gl/maps/vjNtZazLzW82
Views: 102895 Simple Snippets
Cryptography: Crash Course Computer Science #33
 
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Today we’re going to talk about how to keep information secret, and this isn’t a new goal. From as early as Julius Caesar’s Caesar cipher to Mary, Queen of Scots, encrypted messages to kill Queen Elizabeth in 1587, theres has long been a need to encrypt and decrypt private correspondence. This proved especially critical during World War II as Allan Turing and his team at Bletchley Park attempted to decrypt messages from Nazi Enigma machines, and this need has only grown as more and more information sensitive tasks are completed on our computers. So today, we’re going to walk you through some common encryption techniques such as the Advanced Encryption Standard (AES), Diffie-Hellman Key Exchange, and RSA which are employed to keep your information safe, private, and secure. Note: In October of 2017, researchers released a viable hack against WPA2, known as KRACK Attack, which uses AES to ensure secure communication between computers and network routers. The problem isn't with AES, which is provably secure, but with the communication protocol between router and computer. In order to set up secure communication, the computer and router have to agree through what's called a "handshake". If this handshake is interrupted in just the right way, an attacker can cause the handshake to fault to an insecure state and reveal critical information which makes the connection insecure. As is often the case with these situations, the problem is with an implementation, not the secure algorithm itself. Our friends over at Computerphile have a great video on the topic: https://www.youtube.com/watch?v=mYtvjijATa4 Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Want to know more about Carrie Anne? https://about.me/carrieannephilbin The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list=PL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV Want to find Crash Course elsewhere on the internet? Facebook - https://www.facebook.com/YouTubeCrash... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 149458 CrashCourse
What is a DMZ?
 
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In this video you will learn how you can use a DMZ for data exchange between several networks without a direct connection between these networks. For more Information, visit http://support.automation.siemens.com/WW/view/en/22531370
Views: 121441 Siemens
Cryptography Lesson #1 - Block Ciphers
 
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This tutorial video will help provide an understanding of what block ciphers are, and how they are used in the field of cryptography.
Views: 107540 Ryan Kral
CHAPTER 12 FIREWALL Networking Basic
 
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W1Channel Recommended Books to Learn More about Netorking https://goo.gl/x0qr2d W1Channel Recommended Books to Learn More about PC Hardware https://goo.gl/wGi8RU
Views: 225613 W1Channel
Module 5: What is hashing?
 
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Hash: The output of a one-way algorithm (can't go back and reverse it). A mathematically derived numerical representation of some input. References: Kim, D., & Solomon, M. (2014). Cryptography. In Fundamentals of information systems security, second edition (2nd ed., p. 328). Burlington, MA: Jones & Bartlett Learning.
Views: 17536 Simple Security
Cryptography 101 - The Basics
 
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In this video we cover basic terminology in cryptography, including what is a ciphertext, plaintext, keys, public key crypto, and private key crypto.
Views: 257726 Pico Cetef
What is Encryption? Public Key Encryption? Explained in Detail
 
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Namaskaar Dosto, is video mein maine aapko encryption ke baare mein bataya hai, aap sabhi ne computer aur internet use karte time Encryption aur decryption ke baare mein jarur suna hoga, usme aapko SSL encrytpion TSL Encryption, Public Key encryption, private key encryption wagereh ke baare mein bhi suna hoga, aur abhi recently whatsapp ne bhi end to end encryption launch kiya hai, toh aise mein hamare man mein bahut se sawaal hai ki aakhir yeh encryption hota kya hai? Encryption hum hamari email pe bhi use karte hai, aur hum online banking karte time bhi encryption ka use karte hai. Mujhe umeed hai ki yeh video dekhne ke baad aap encryption aur decryption ke baare mein sab kuch jaan jayenge, aur saath hi saath public key encryption ke baare mein bhi samajh jayenge. aur aap aaraam se whatsapp ke encryption feature ko bhi use kar payenge. Win Galaxy S7, S7 Edge Here: http://bit.ly/TheMegaGiveaway Share, Support, Subscribe!!! Subscribe: http://bit.ly/1Wfsvt4 Youtube: http://www.youtube.com/c/TechnicalGuruji Twitter: http://www.twitter.com/technicalguruji Facebook: http://www.facebook.com/technicalguruji Instagram: http://instagram.com/technicalguruji Google Plus: https://plus.google.com/+TechnicalGuruji About : Technical Guruji is a YouTube Channel, where you will find technological videos in Hindi, New Video is Posted Everyday :)
Views: 151109 Technical Guruji
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: 254939 Physics Girl
The "C.I.A." security concepts.
 
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Confidentiality, Integrity and Availability are 3 of the core pillars in a Information Security architecture.
Views: 28807 Keith Barker
Understanding WEP, WPA, and WPA2 - CompTIA Network+ N10-005: 5.1
 
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THE N10-005 EXAM HAS BEEN RETIRED. See the latest Network+ videos at http://www.FreeNetworkPlus.com Our wireless networks would be worthless without a strong method of encrypting the wireless data. In this video, you'll learn about the WEP, WPA, and WPA2 wireless encryption protocols.
Views: 59585 Professor Messer
Module 5: What is a cipher (substitution and transposition)?
 
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There are many different types of ciphers The examples shown in this video are substitution and transposition ciphers This video shows how normal plain-text is converted to cipher-text References: Substitution cipher. (n.d.). Retrieved February 18, 2015, from https://www.princeton.edu/~achaney/tmve/wiki100k/docs/Substitution_cipher.html
Views: 19147 Simple Security
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: 406549 itfreetraining
Will Quantum Computers break encryption?
 
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How do you secure messages over the internet? How do quantum computers break it? How do you fix it? Why don't you watch the video to find out? Why does this description have so many questions? Why are you still reading? What is the meaning of life? Facebook: https://www.facebook.com/frameofessence Twitter: https://twitter.com/frameofessence YouTube: https://www.youtube.com/user/frameofessence CLARIFICATIONS: You don't actually need a quantum computer to do quantum-safe encryption. As briefly mentioned at 7:04 , there are encryption schemes that can be run on regular computers that can't be broken by quantum computers. CORRECTIONS: [2:18] Technically, you can use any key to encrypt or decrypt whatever you want. But there's a specific way to use them that's useful, which is what's shown in the video. [5:36] In RSA, depending on exactly what you mean by "private key", neither key is actually derivable from the other. When they are created, they are generated together from a common base (not just the public key from the private key). But typically, the file that stores the "private key" actually contains a bit more information than just the private key. For example, in PKCS #1 RSA private key format ( https://tools.ietf.org/html/rfc3447#appendix-A.1.2 ), the file technically contains the entire public key too. So in short, you technically can't get the public key from the private key or vice versa, but the file that contains the private key can hold more than just the private key alone, making it possible to retrieve the public key from it. Video links: Encryption and HUGE numbers - Numberphile https://youtu.be/M7kEpw1tn50 The No Cloning Theorem - minutephysics https://youtu.be/owPC60Ue0BE Quantum Entanglement & Spooky Action at a Distance - Veritasium https://youtu.be/ZuvK-od647c Sources: Quantum Computing for Computer Scientists http://books.google.ca/books/about/Quantum_Computing_for_Computer_Scientist.html?id=eTT0FsHA5DAC Random person talking about Quantum MITM attacks http://crypto.stackexchange.com/questions/2719/is-quantum-key-distribution-safe-against-mitm-attacks-too The Ekert Protocol (i.e. E91) http://www.ux1.eiu.edu/~nilic/Nina's-article.pdf Annealing vs. Universal Quantum Computers https://medium.com/quantum-bits/what-s-the-difference-between-quantum-annealing-and-universal-gate-quantum-computers-c5e5099175a1 Images, Documents, and Screenshots: Post-Quantum Cryptography initiatives http://csrc.nist.gov/groups/ST/post-quantum-crypto/cfp-announce-dec2016.html http://pqcrypto.eu.org/docs/initial-recommendations.pdf Internet map (Carna Botnet) http://census2012.sourceforge.net/ Quantum network maps https://www.slideshare.net/ADVAOpticalNetworking/how-to-quantumsecure-optical-networks http://www.secoqc.net/html/press/pressmedia.html IBM Quantum http://research.ibm.com/ibm-q/ Music: YouTube audio library: Blue Skies Incompetech: Jay Jay Pamgaea The House of Leaves Premium Beat: Cutting Edge Technology Second Time Around Swoosh 1 sound effect came from here: http://soundbible.com/682-Swoosh-1.html ...and is under this license: https://creativecommons.org/licenses/sampling+/1.0/
Views: 367177 Frame of Essence
The concept of symmetric and asymmetric cryptography
 
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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: 11140 Guru Kpo
The one-time pad | Journey into cryptography | Computer Science | Khan Academy
 
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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: 407249 Khan Academy
NETWORK SECURITY - MD5 ALGORITHM
 
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The MD5 algorithm is a widely used hash function producing a 128-bit hash value. Step 1. Append Padding Bits. The message is "padded" (extended) so that its length (in bits) is congruent to 448, modulo 512. ... Step 2. Append Length. ... Step 3. Initialize MD Buffer Step 4. Process Message in 16-Word Blocks. ... Step 5. Output.
Steganography Explained - Sending Secret Messages in Images
 
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Namaskaar Dosto, is video mein maine aapse ek bahut hi interesting topic ke baare mein baat ki hai jo hai Steganography, aap sabhi ne Cryptography ke bare mein toh suna hi hoga, but maine yaha aapse Steganography ke baare mein baat ki hai jo ek bahut hi kamaal ki technique hai secretly messages bhejne ka. Encryption ka ekdum next level, Mujhe umeed hai ki aapko Steganography ke baare mein yeh video pasand aayegi. KeepVid Pro: http://goo.gl/fKIqDg KeepVid: http://keepvid.com/ Share, Support, Subscribe!!! Subscribe: http://bit.ly/1Wfsvt4 Youtube: http://www.youtube.com/c/TechnicalGuruji Twitter: http://www.twitter.com/technicalguruji Facebook: http://www.facebook.com/technicalguruji Facebook Myself: https://goo.gl/zUfbUU Instagram: http://instagram.com/technicalguruji Google Plus: https://plus.google.com/+TechnicalGuruji About : Technical Guruji is a YouTube Channel, where you will find technological videos in Hindi, New Video is Posted Everyday :)
Views: 78104 Technical Guruji
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 101: Full Workshop
 
01:34:03
SecureSet is a cybersecurity academy with campuses in Denver and Colorado Springs CO, as well as Tampa FL. We also host events in Austin TX and DC Metro. Join us for our next Hacking 101 event! https://secureset.com/events
Views: 135175 SecureSet
NETWORK SECURITY - TYPES OF AUTHENTICATION (Message Encryption, MAC, Hash Functions)
 
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Three types of Authentications 1. Message Encryption 2. Message Authentication Code 3. Hash Functions.
Public Key Cryptography - Computerphile
 
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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: 389371 Computerphile
Quantum Cryptography Explained Simply
 
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Quantum Cryptography explained simply. Regular encryption is breakable, but not quantum cryptography. Today we'll look at the simplest case of quantum cryptography, quantum key distribution. It uses the Heisenberg Uncertainty Principle to prevent eavesdroppers from cracking the code. Hi! I'm Jade. Subscribe to Up and Atom for new physics, math and computer science videos every week! *SUBSCRIBE TO UP AND ATOM* https://www.youtube.com/c/upandatom *Let's be friends :)* TWITTER: https://twitter.com/upndatom?lang=en *QUANTUM PLAYLIST* https://www.youtube.com/playlist?list=PL1lNrW4e0G8WmWpW846oE_m92nw3rlOpz *SOURCES* http://gva.noekeon.org/QCandSKD/QCandSKD-introduction.html https://www.sans.org/reading-room/whitepapers/vpns/quantum-encryption-means-perfect-security-986 https://science.howstuffworks.com/science-vs-myth/everyday-myths/quantum-cryptology.htm The Code Book - Simon Singh *MUSIC* Prelude No. 14 by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/preludes/ Artist: http://chriszabriskie.com/
Views: 11153 Up and Atom
INTRODUCTION TO FIREWALLS FOR NETWORK SECURITY IN HINDI
 
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find relevant notes at-https://viden.io/
Views: 57043 LearnEveryone
RSA Algorithm concept and Example
 
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Enroll to Full Course: https://goo.gl/liK0Oq Networks#4: The video explains the RSA Algorithm (public key encryption) Concept and Example along with the steps to generate the public and private keys. The video also provides a simple example on how to calculate the keys and how to encrypt and decrypt the messages. For more, visit http://www.EngineeringMentor.com. FaceBook: https://www.facebook.com/EngineeringMentor. Twitter: https://www.twitter.com/Engi_Mentor
Views: 154106 Skill Gurukul
What Is Cipher In Network Security?
 
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Lecture 2 some basic vocabulary of computer and network reverse circle cipher for personal security (pdf encryption algorithms sorcery. The type and january 17, 2012cryptography network security. The term cipher is sometimes used as a synonym for ciphertext, but it more properly means the method of encryption rather than result in cryptography, (or cypher) an algorithm performing or decryption some systems both codes and ciphers one system, using superencipherment to increase security. Plaintext is what you have before encryption, and ciphertext the encrypted result. Encryption schemes are based on block or stream ciphers. Origin of the only security service these systems provide is confidentiality information in cryptography, cipher text (ciphertext) data that has been encrypted. Poly alphabetic cipher in network security mybscit. Chapter 3 block ciphers and the in network security as streams are widely used to protecting privacy of digital information. Key info used in cipher known only to network securityfifth edition by william stallings. Googleusercontent search. A variety of attacks against stream cipher exist;(algebraic and 16 aug 2016 the following example explains about poly alphabetic in netwrork security cryptography network select ciphertext obtain plaintext to attack either or en decrypt 30 apr 2017 lecture notes on computer by avi kak deciphering decryption recovering from also, ciphers for such as diffie hellman rsa require large number bits. Design and analysis of stream cipher for network security. What is cipher? Definition from whatis searchsecurity. William stallings, cryptography and network security 3 e. This paper suggests a simple block cipher scheme to effectively there are several types of data encryptions which form the basis network security. Lecture 3 block ciphers and desdepartment of it, bo akademi universityunconditional security. Cryptography and encryptions,network security,caesar cipherunit 1 symmetric cipher mod modelcryptography network security chapter 3. No matter how much computer power is available, the cipher cannot be broken since ciphertext provides insufficient What cipher? Definition from whatis searchsecurity. Cryptography and network security 3 e. A cipher (pronounced sai fuhr) is any method of encrypting text (concealing its readability and meaning). In addition to the cryptographic meaning, cipher also means (1) someone insignificant, and (2) a combination of symbolic letters as in an entwined weaving for monogram ciphertext is encrypted text. What is ciphertext? Definition from whatis what a cipher? techopediawhat cipher text (ciphertext)? Webopedia definition. Techtarget definition cipher url? Q webcache. Cryptography and network security bo akademi. Isbn 0 88385 622 william stallings, cryptography and network security, principles practices, 4th edition a cipher enables private communication is often used in email, so that if an encrypted message intercepted by unauthorized user, the cannot trad
Views: 124 Aile Aile
What is Modular Arithmetic - Introduction to Modular Arithmetic - Cryptography - Lesson 2
 
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Modular Arithmetic is a fundamental component of cryptography. In this video, I explain the basics of modular arithmetic with a few simple examples. Learn Math Tutorials Bookstore http://amzn.to/1HdY8vm Donate - http://bit.ly/19AHMvX
Views: 105127 Learn Math Tutorials
aes tutorial, cryptography Advanced Encryption Standard AES Tutorial,fips 197
 
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https://8gwifi.org/CipherFunctions.jsp Computer Security, Cryptography Advanced Encryption Standard AES,fips 197 The Advanced Encryption Standard (AES) specifies a FIPS-approved cryptographic algorithm that can be used to protect electronic data. The AES algorithm is a symmetric block cipher that can encrypt (encipher) and decrypt (decipher) information. Encryption converts data to an unintelligible form called ciphertext; decrypting the ciphertext converts the data back into its original form, called plaintext. The AES algorithm is capable of using cryptographic keys of 128, 192, and 256 bits to encrypt and decrypt data in blocks of 128 bits. aes encryption and decryption aes encryption example aes encryption tutorial aes encryption online aes algorithm, aes encryption explained, aes algorithm tutorial, aes encryption and decryption algorithm, aes encryption algorithm, aes algorithm lecture, aes algorithm example, aes cryptography, aes encryption and decryption algorithm
Views: 138659 Zariga Tongy
Hashing Algorithms and Security - Computerphile
 
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Audible free book: http://www.audible.com/computerphile Hashing Algorithms are used to ensure file authenticity, but how secure are they and why do they keep changing? Tom Scott hashes it out. More from Tom Scott: http://www.youtube.com/user/enyay and https://twitter.com/tomscott http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Pigeon Sound Effects courtesy of http://www.freesfx.co.uk/ 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: 681055 Computerphile
What Is Meant By Cryptography And Network Security?
 
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It means the digital signatures are central to operation of public key infrastructures and many network security schemes (e. We end the presentation with a discussion of rsa algorithm, and web communication cryptography network security. ) 14 jul 2015 understand the basics of cryptography to keep your networks, systems, and data secure cryptography tutorial for beginners learn cryptography in simple and easy it explains how programmers and network professionals can use cryptography to this tutorial is meant for students of computer science who aspire to learn the definition of cryptography discipline or techniques employed in protecting integrity or secrecy of electronic network the overconfident security expert bragged endlessly about his 'superior ' cryptography skills, yet the sophisticated hacker definition of cryptography discipline or techniques employed in protecting integrity or secrecy of electronic network the overconfident security expert bragged endlessly about his 'superior ' cryptography skills, yet the sophisticated hacker if you take a close look at the meaning behind the key word in the phrase cryptography in network security, you will have a good idea of what is meant by the cryptography and network security video lectures, iit kharagpur online course, free tutorials for free download security also depends on key password, to keep data secure. Fifth edition key security concepts• Can define 3 levels of impact from a Network and cryptography slideshare. Ssl tls, many vpns, etc. A beginners guide from comodo. Terminology cryptography vs security stack the concept of trust in network entrust. What is cryptography? Webopedia definition. Cryptography for network and information security technetlearning cryptography lynda what is cryptography? Definition meaning businessdictionary in. Cryptography, which translates as 'secret writing,' refers to the science of concealing meaning data so only specified parties understand a transmission's contents cryptography definition involves creating written or generated codes that allows information security uses on several levels internet and other forms electronic communication become more prevalent, is becoming increasingly important. Public key cryptography requires access to users' public nptel provides e learning through online web and video courses various streams network securitydeptdefine cryptanalysiswhat is meant by andoverview & chapter 1. Cryptography? Definition from whatis however, in today's computer centric world, cryptography is most often associated with scrambling plaintext (ordinary text, sometimes referred to as cleartext) into ciphertext (a process called encryption), then back again (known decryption) 19 mar 2010 a brief discussion of network security and an introduction. So what ever cryptography produces it must make data network secure in a security solution such as entrust, there are two important forms of trust that. Web communication cryptography and network s
Views: 15 Til Til
Cryptography: Transposition Cipher
 
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This lesson explains how to encrypt and decrypt a message using a transposition cipher. Site: http://mathispower4u.com
Views: 49511 Mathispower4u
What is Firewall? Good or Bad? Explained in Detail
 
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Namaskaar Dosto, is video mein maine aapko firewall ke baare mein bataya hai, aap sabhi ne internet use karte time firewall ke baare mein jarur suna hoga, ab maine aapko bataya hai ki firewall kya hai? firewall kya kaam karta hai? aur aapko firewall ki kya jarurat hai? Dosto firewall ek security ki layer hai jo aapko computer ko protect karta hai malicious attacks se, yeh ek hardware bhi ho sakta hai, aur software bhi ho sakta hai, aur firewall ki madad se administration bhi kar sakte hai, kyuki jaise kisi country mein koi specific service agar government ko block karni hai toh bhi firewall kaam mein aata hai, aap yeh video dekhiye aur aapko pata chal jayega ki firewall kya hai, aur internet use karte time aapko firewall use karna kyu jaruri hai. Mujhe umeed hai ki firewall ke baare mein banayi gayi yeh video aapko pasand aayegi. Win Galaxy S7, S7 Edge Here: http://bit.ly/TheMegaGiveaway Share, Support, Subscribe!!! Subscribe: http://bit.ly/1Wfsvt4 Youtube: http://www.youtube.com/c/TechnicalGuruji Twitter: http://www.twitter.com/technicalguruji Facebook: http://www.facebook.com/technicalguruji Instagram: http://instagram.com/technicalguruji Google Plus: https://plus.google.com/+TechnicalGuruji About : Technical Guruji is a YouTube Channel, where you will find technological videos in Hindi, New Video is Posted Everyday :)
Views: 199973 Technical Guruji
What is SSL and how does it work?
 
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Animated explainer video from Lyquix about Secure Sockets Layer technology and why it is important for web browsing. This is for the non-technical user to understand what’s going on behind the scenes with encryption, security certificate identification and how SSL keeps web browsing and personal information safe.
Views: 106623 Lyquix
How a VPN Works and What It Does for You
 
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What is VPN VPN is short for Virtual Private Network. Think of your home network, or your office network, as private networks. Through a VPN connection, your computer, tablet or smartphone is able to securely connect with others on the Internet as if they were part of the same private network. In the olden days, VPN was used by corporate employees to access their offices while remote - when they needed to access sensitive information in a secure way. In time, VPN technology became available for regular internet users. It helps people from all over the world connect in a secure way. VPN allows you to have your connection encrypted and secure, to become anonymous online and to keep your traffic data private and safe from hackers, government censorship and other dangers of the Internet. VPN also helps you get access to blocked content. Because of geolocation, some online content, such as videos, music files, news, search engines and so on, may be unavailable from certain countries and locations. Using a VPN service allows you to login to a server located in a place from where the content is available - and voila - you have access to previously blocked content. This is especially significant for those who live in countries where the government is restrictive and censors online content and information from the outside world. VPN technology helps people in these countries get vital information and talk to the world, thus making their problems visible to the international community. They live in an information-blocking cage. And with our VPN service we give them one of the keys to more freedom. So, to recap: VPN technology gives you Privacy, Freedom and Security, and this is incredibly useful when you do your online banking, use WiFi hotspots, shop online, access media or secure your communication. And here, at CyberGhost VPN, we believe you deserve all these benefits. CyberGhost is a fast, simple and efficient way to protect your online privacy, surf anonymously and access blocked or censored content. It offers top-notch security and anonymity without being complicated to use or slowing down your internet connection. http://www.cyberghostvpn.com/en
Views: 603768 CyberGhost VPN
Methods of Cryptography
 
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Methods of Cryptography- In this lesson, Yashika Tandon teaches about cryptography methods are discussed. This lesson also covers the network security - cryptography. Network security is protection of the access to files, directories and information in a computer network against hacking, misuse and unauthorized changes to the system. In this lesson the basics of Network security, some definitions, terms and concepts.This course provides a complete knowledge on the concept of cryptography and how it can be implemented to protect the messages. You can watch the full list of courses and start discussions with the educator here: https://goo.gl/5fcBJV For more educational lessons by top educators download the Unacademy Learning App from Android Playstore: https://play.google.com/store/apps/details?id=com.unacademyapp&hl=en or visit http://unacademy.com
Public key cryptography - Diffie-Hellman Key Exchange (full version)
 
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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: 579542 Art of the Problem
What Is Meant By Cryptography?
 
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Plaintext) into an encrypted output (i. If you want to keep information secret, have two possible strategies hide the existence of information, or make mar 27, 2012. See more definition of cryptography discipline or techniques employed in protecting integrity secrecy electronic messages by converting them into unreadable is a cornerstone the modern security technologies used today to protect valuable information resources on intranets, extranets, and scientific field providing for through reversible alteration data known as. Individuals who practice this field are known as cryptographers cryptography definition involves creating written or generated codes that allows information to be kept secret. However, in today's computer centric world, cryptography is most often associated with scrambling plaintext (ordinary text, sometimes referred to as cleartext) into ciphertext (a process called encryption), then back again (known decryption). Ciphertext) definition cryptography is associated with the process of converting ordinary plain text into unintelligible and vice versa. Cipher or introduction to cryptography definition department of computer from pc magazine encyclopedia. Cryptology wiktionary. Cryptography is an ancient science that introduction to cryptographyprocess data into unintelligible form, reversibly, without loss typically digitally. What is a cryptographic hash function? Lifewire. Usually one to in the conversion of data into a secret code for transmission over public network. Today, most cryptography is digital, and the original text ('plaintext') turned defined brief history. Cryptography defined brief history laits. What is cryptography? (video) what cryptography & types of definition 'cryptography' the economic timescomputer scienceweb communication and network security shoretel. Cryptography? Definition from whatis. What is cryptography? Definition from techopediawhat Webopedia definitiondefinition of cryptography by merriam websterdefine at dictionary. What is cryptography? Definition and meaning businessdictionary cryptography for network information security technet. Encryption (a major component of cryptography) uses an algorithm and a key to transform input (i. Cryptology is the study of mathematical, linguistic, and other coding patterns histories What cryptography? Definition from techopediawhat Webopedia definitiondefinition cryptography by merriam websterdefine at dictionary. It is a method of storing and using cryptographic techniques, it may be possible to allow intermediate results in an artificial society which trust has precise algorithmic meaning this tutorial meant for students computer science who aspire learn the basics cryptography. Cryptography converts cryptography or cryptology (from greek krypts, 'hidden, secret'; And graphein, 'writing', logia, 'study', respectively) is the practice and study of techniques for secure communication in presence third parties called adversaries encrypted messages can sometime
Views: 11 Funny Question
Kerberos in Hindi – Network Authentication Protocol, KDC, AS, TGS
 
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Kerberos in Hindi – Network Authentication Protocol, KDC, AS, TGS 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
Cryptographic Algorithms - Bart Preneel
 
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Messages have been encrypted for millennia. Successfully hiding the plaintext has required increasingly sophisticated algorithms to defeat advances in crypto-analysis. Claude Shannon proved information theoretic security of the Vernam scheme, a.k.a. one-time pad. Since a one-time pad must be as long as the plaintext and can only be used once, the method is not widely used. Complexity theoretic security provides less strong but more practical security guarantees. Encryption provides confidentiality. In order to also ensure data authenticity, additional techniques are needed, such as Message Authentication Codes (MAC) or hashing. Alternatively, authenticated encryption combines confidentiality and data authenticity. Users of symmetric cryptography need to share a key between communicating parties. This is hard to do securely. Public key cryptology addresses this key distribution problem. Moreover, it affords digital signatures. In practice, public key cryptography is too slow to encrypt large amounts of data. Hence it is used for key agreement. A lecture by Bart Preneel at SecAppDev 2015 in Leuven, Belgium. Professor Bart Preneel of KU Leuven heads the COSIC (COmputer Security and Industrial Cryptography) research group. His main research area is information security with a focus on cryptographic algorithms and protocols as well as their applications to both computer and network security, and mobile communications. He teaches cryptology, network security and coding theory at the K.U.Leuven and was visiting professor at the Ruhr Universitaet Bochum (Germany), the T.U.Graz (Austria), the University of Bergen (Norway), and the Universiteit Gent (Belgium). In '93-'94 he was a research fellow at the University of California at Berkeley. He has taught intensive courses around the world. He undertakes industrial consulting (Mastercard International, S.W.I.F.T., Proton World International,...), and participates in the work of ISO/IEC JTC1/SC27/WG2. Professor Preneel is Vice President of the International Association for Cryptologic Research (IACR) and co-founder and chairman of LSEC vzw (Leuven Security Excellence Consortium).
Views: 910 secappdev.org
How SSH Works
 
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A whiteboarding animation about secure shell protocol.
Views: 214409 Karol Cholewa
What is Shared Key Cryptography?
 
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In this video, I answer one of the most common questions asked during my Blockhain and Bitcoin Fundamentals course. "What is Shared Key Cryptography?" During the lesson I explain what Shared Key Cryptography is with a clear example, and I present a clear definition. Sign up to receive George Levy's FREE email newsletter and a video email course on blockchain, Bitcoin and cryptocurrency ($47 Value yours free) at: https://GeorgeLevy.com/Free Follow George Levy at the following links: https://GeorgeLevy.com (George Levy Website) https://Twitter.com/GeorgeLevy https://Facebook.com/GeorgeLevyBlockchain (Official Facebook Page) Special offer for George Levy YouTube channel visitors, open a new Bitcoin wallet for Free and get $10 bonus in Bitcoin at: https://blockchaininformer.com/btcwallet
Views: 2585 George Levy
Wireless communication Lecture - -  IEEE 802.11 Architecture | Services (Eng-Hindi)
 
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-~-~~-~~~-~~-~- Please watch: "PL vs FOL | Artificial Intelligence | (Eng-Hindi) | #3" https://www.youtube.com/watch?v=GS3HKR6CV8E -~-~~-~~~-~~-~-
Views: 78139 Well Academy