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Cryptography: The Science of Making and Breaking Codes
 
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There are lots of different ways to encrypt a message, from early, simple ciphers to the famous Enigma machine. But it’s tough to make a code truly unbreakable. Hosted by: Michael Aranda ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, John Szymakowski, Fatima Iqbal, Justin Lentz, David Campos, and Chris Peters. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: http://www.vectorsite.net/ttcode_04.html#m3 http://www.simonsingh.net/The_Black_Chamber/crackingprinciple.html http://book.itep.ru/depository/crypto/Cryptography_history.pdf http://www.cs.trincoll.edu/~crypto/historical/gronsfeld.html http://www.sans.org/reading-room/whitepapers/vpns/history-encryption-730 http://ftp.stmarys-ca.edu/jsauerbe/m10s11/chapter5.pdf http://www.turing.org.uk/scrapbook/ww2.html http://enigma.louisedade.co.uk/howitworks.html http://www.codesandciphers.org.uk/enigma/example1.htm http://www.pbs.org/wgbh/nova/military/how-enigma-works.html http://www.cs.miami.edu/~burt/learning/Csc609.051/notes/02.html
Views: 803637 SciShow
what is encryption and decryption ? about cryptography | TECH SETTAI TAMIL
 
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what is encryption and decryption ? about cryptography | TECH SETTAI TAMIL its about the type of attack in cryptography, use of encryption and decryption. why encryption are used where encryption are used types of attack in cryptography and more SUBSCRIBE US BY CLICKING RED SUBSCRIBE BUTTON, SUPPORT US ON FB, TWITTER AND ALSO G+ twitter: https://twitter.com/TechSettai fb:https://www.facebook.com/techsettai/ g+ :https://plus.google.com/u/1/117864875... -~-~~-~~~-~~-~- Please watch: "how to install app not available in INDIA | TECH SETTAI TAMIL" https://www.youtube.com/watch?v=wF5JAhDvPQM -~-~~-~~~-~~-~-
[Hindi] What is Cryptography ? | Kya hai cryptography ? | Explained in simple words
 
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Hello Dosto Aaj hum baat karenge cryptography ke bare me ki ye kya hota hai aur iska itemaal kaise aur kaha hota hai. iska sambandh kisi bhi data ya message ko safely pohchane se hota hai aur uski security badhayi jati hai taaki bich me koi an-adhikarik tarike se usko access na kar paye. aasha karta hoo apko ye video pasand ayegi agar aapko ye video achhi lage to isse like kare aur apne dosto ke sath share kare aur abhi tak aapne mera channel subscribe nahi kia hai to jarur is channel ko subscribe kare. Subscribe to my channel for more videos like this and to support my efforts. Thanks and Love #TechnicalSagar LIKE | COMMENT | SHARE | SUBSCRIBE ---------------------------------------------------------------------------------- For all updates : SUBSCRIBE Us on Technical Sagar : www.youtube.com/technicalsagarindia LIKE us on Facebook https://www.facebook.com/technicalsagarindia Follow us on Twitter : http://www.twitter.com/iamasagar
Views: 91375 Technical Sagar
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: 420208 Khan Academy
The Enigma Machine Explained
 
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As technology increases, so do the methods of encryption and decryption we have at our disposal. World War II saw wide use of various codes from substitution ciphers to employing Navajo code talkers in the Pacific theater. Here, science journalist and author Simon Singh demonstrates the German enigma machine, a typewriter-like device used to encrypt communications. He demonstrates not only its operation, but both the strength and fatal flaws in its method. Watch the Full Program Here: https://youtu.be/nVVF8dgKC38 Original Program Date: June 4, 2011 The World Science Festival gathers great minds in science and the arts to produce live and digital content that allows a broad general audience to engage with scientific discoveries. Our mission is to cultivate a general public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future. Subscribe to our YouTube Channel for all the latest from WSF. Visit our Website: http://www.worldsciencefestival.com/ Like us on Facebook: https://www.facebook.com/worldsciencefestival Follow us on twitter: https://twitter.com/WorldSciFest
Views: 474199 World Science Festival
History of Cryptography
 
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Brief History of Cryptography
Views: 195 shaan1111
The Caesar cipher | Journey into cryptography | Computer Science | Khan Academy
 
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Brit explains the Caesar cipher, the first popular substitution cipher, and shows how it was broken with "frequency analysis" Watch the next lesson: https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/polyalphabetic-cipher?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson? https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/intro-to-cryptography?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: 595061 Khan Academy
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: 96670 Learn Math Tutorials
Криптография (Cryptography) Шифрование данных и дешифровка Encryption and Decryption RSA
 
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Криптография - это наука об обеспечении безопасности данных. Она занимается поисками решений четырех важных проблем безопасности - конфиденциальности, аутентификации, целостности и контроля участников взаимодействия. Шифрование - это преобразование данных в нечитабельную форму, используя ключи шифрования-расшифровки. Шифрование позволяет обеспечить конфиденциальность, сохраняя информацию в тайне от того, кому она не предназначена. ➤ Для удобства участникам передачи зашифрованного сообщения дают следующие имена: Алиса — отправитель, Боб — получатель, Ева — пассивный перехватчик, Меллори (Man-in-the-middle) — активный перехватчик, может не только перехватывать передачу, но и подменять содержимое. ➤ Криптография не занимается: защитой от обмана, подкупа или шантажа законных абонентов, кражи #ключей и других угроз информации, возникающих в защищенных системах передачи #данных. ➤ Криптография — одна из старейших наук, её #история насчитывает несколько тысяч лет. Ещё в древнем Риме Гай Юлий Цезарь, который совершенно не доверял гонцам, опасаясь что те прочтут его письма, прибегал к #шифрам. Для того, чтобы избежать вероятности того, что гонец всё же осмелится и захочет прочесть послание Цезаря, он, отправляя письма генералам, менял каждую букву на D, каждую B на E, и так далее. И лишь те, кто знал правило «сдвига на 3» мог расшифровать его послание. Проблема защиты информации и сегодня является наверное одной из самых актуальных. Шифрованием, кодированием и многими другими методами, созданными для обеспечения конфиденциальности информации занимается одна из древнейших наук – криптография. Какие шифры бывают и есть ли системы шифрования,которые невозможно взломать и раскрыть? Какие методы и системы защиты информации использует криптография? Как можно защитить себя от атаки хакеров? Об этом расскажут: кандидат психологических наук - Сергей Николаевич Ениколопов, кандидат физико-математических наук - Иван Владимирович Чижов и доктор физико-математических наук - Владимир Сергеевич Анашин ➤ Изначально криптография изучала методы шифрования информации — обратимого преобразования открытого (исходного) текста на основе секретного #алгоритма или ключа в шифрованный #текст (шифротекст). Традиционная #криптография образует раздел симметричных криптосистем, в которых зашифрование и расшифрование проводится с использованием одного и того же секретного ключа. Помимо этого раздела современная криптография включает в себя асимметричные криптосистемы, системы электронной цифровой подписи (ЭЦП), хеш-функции, управление ключами #key, получение скрытой информации, #квантовую криптографию. ► ► ► ► ► ► ► ► ► ► ► ► ► ► ► ► ► ► ►► ► ► ► ► ► ► ► ► ► ► ICOTRACKER.NET специализируется на оценке компании с запланированным ICO "ИКО". Анализ #icotracker является тщательным и объективным анализом компаний в качестве потенциальных объектов инвестирования. ♐ ICO (Initial Coin Offer) - начальное распределение (предложение) монет! ♐ AirDrops и закрытое распределение монет на примере #PostCoin и #AuroraCoin ♐ Баунти "bounty" криптовалют на примере #Wings DAO ╔══════════════════════════════════════════════════════╗ ➥ Ждём от вас комментарии, вопросы, конструктивную критику и предложение ICO стартапов, которые на Ваше усмотрение есть интересны и мы их разобрали в следующих обзорах! ╚══════════════════════════════════════════════════════╝ ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ ☛ Канал "ICO startups mining" посвящен рекомендациям, обзорам, презентациям проверенных стратегий заработка в Интернете как без вложений, так и с минимальными инвестициями. Это знания и навыки, которые позволят вам зарабатывать в интернете те деньги, о которых вы мечтаете, а со временем - обрести финансовую свободу и независимость. ☛ Криптоаналитика и подробная информация об инвестиционных возможностях рынка электронных валют. Обзор новых проектов ICO, информация о рабочих blockchain-решениях, обмен опытом и консультации! ☛ Новости мира криптовалют, децентрализованных технологий, денежных систем и современных финансовых технологий. ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ ╔══════════════════════════════════════════════════════╗ ➤ подписывайся на канал - https://www.youtube.com/channel/UC0Dc6MqKvry3geBNcakmu-g ➤ Skype: Кaznachej123 ➤ Тelegram: https://telegram.me/icostart1 ➤ Twitter: https://twitter.com/Kaznachej123 ➤ я зарабатываю здесь: https://icotracker.net ➤ Skype чат майнеров: https://join.skype.com/jgKBOiMc1vZv ➤ Skype чат BlockCDN майнинг: https://join.skype.com/dmfsXdYEfAnf ╚══════════════════════════════════════════════════════╝
Views: 895 ICO startups
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
What is PGP/GPG Encryption? In 3 Minutes - PGP/GPG Tutorial for Beginners
 
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Thanks for watching! I'd love it if you could support me by subscribing and sharing it with your friends. Thanks!
Views: 142134 Victor Dozal
What is Encryption ? Explained in Detail ![MALAYALAM] RANDOM THOUGHTS #59
 
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Dear Friends ....Most of all internet users are familiar with Encryption .Here in this video i have explained about what is the basics of encryption ,and mainly about Public key Encryption . Follow Me Online! https://twitter.com/SundeepKumarOn https://www.facebook.com/sundeepkumaronline https://www.instagram.com/sundeepkumaronline https://in.pinterest.com/SundeepKumarOn https://www.linkedin.com/in/sundeep-kumar-73764a125 https://plus.google.com/u/0/+SundeepKumarOnline https://sundeepkumaronline.tumblr.co encryption encryption definition encryption software encryption meaning encryption and decryption encryption key encryption types encryption basics encryption code encryption domain encryption data encryption debate encryption example encryption file encryption gmail encryption google encryption hash encryption history
Views: 6440 Sundeep Kumar
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: 470655 itfreetraining
NSA Careers Encrypted Tweet - Decryption Process tpfccdlfdtte
 
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Follow up video on how to crack the cipher encryption key systematically: https://www.youtube.com/watch?v=LcsOQexdXZM&list=PLAp8l9zV14TZn5Ze_xgS45UymXZl8V7Rl&index=11 Tweet 2: https://www.youtube.com/watch?v=I8BeSDwNAr4 Tweet 3: https://www.youtube.com/watch?v=8fMDAjOJDmk How to decrypt the @NSACareers tweet from May 5th: tpfccdlfdtte pcaccplircdt dklpcfrp?qeiq lhpqlipqeodf gpwafopwprti izxndkiqpkii krirrifcapnc dxkdciqcafmd vkfpcadf. #MissionMonday #NSA #news Solution: wanttoknowwh atittakestow orkatnsa?chec kbackeachmon dayinmayaswe explorecaree rsessentialt oprotectingo urnation. #gevvemlgmloij #lvi #lhyv NSA tweet: https://twitter.com/NSACareers/statuses/463321993878994945 Khan Academy Intro to Cryptography: https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/intro-to-cryptography Backtrack: http://www.backtrack-linux.org Substitution cipher JavaScript site: http://practicalcryptography.com/ciphers/simple-substitution-cipher/ Crypto tool: http://cryptoclub.org/tools/cracksub_topframe.php The 1939 novel "Gadsby" by E. Wright (Without Using the Letter "E") http://en.wikipedia.org/wiki/Gadsby_%28novel%29 Previous recording about the GrrCON Security Conference Crypto Challenge: https://www.youtube.com/watch?v=LeSYpjVKwD4 by Szymon Machajewski Grand Valley State University follow @smProf on Twitter to learn more https://twitter.com/smprof
Views: 3130 Szymon Machajewski
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: 60236 Mathispower4u
INTRODUCTION TO CRYPTOGRAPHY IN HINDI
 
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find relevant notes at-https://viden.io/
Views: 59833 LearnEveryone
Cryptography and privacy. An easy explanation on how to create a key for encryption.
 
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Cryptography is the base for most of our communications online. It's what keeps your messages and your activities private. In this video we explain how cryptography encodes your message using a key and exactly how this key works.
Views: 9321 MinuteVideos
What is cryptography? | Journey into cryptography | Computer Science | Khan Academy
 
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What is Cryptography? A story which takes us from Caesar to Claude Shannon. Watch the next lesson: https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/caesar-cipher?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson? https://www.khanacademy.org/computing/computer-science/algorithms/intro-to-algorithms/v/what-are-algorithms?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Computer Science on Khan Academy: Learn select topics from computer science - algorithms (how we solve common problems in computer science and measure the efficiency of our solutions), cryptography (how we protect secret information), and information theory (how we encode and compress information). About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Computer Science channel: https://www.youtube.com/channel/UC8uHgAVBOy5h1fDsjQghWCw?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 791061 Khan Academy
What is Whatsapp End to End Encryption | How to Use this.
 
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Heys Guys, you have seen in your whatsApp message that "end to end encryption ". In this this video i will tell you what is this and how to see your message is Encrypted or not and is this Good or Bad? and is this Best in Security? ============================================= Update your WhatsApp: For iPhone [IOS] :https://adf.ly/1Z9ai6 For Android :https://adf.ly/1Z9anQ For Windows Phone:https://adf.ly/1Z9arj ============================================= Request your VIDEO!:-https://adf.ly/1Z44FT ========================================­===== Music Credit:-Razihel - Love U [NCS Release] ============================================= Subscribe for More:-http://www.youtube.com/c/TechFire1998?sub_confirmation=1 ============================================= Thanks For Watching....... Please Leave A Like I Worked Hard On This ----------------------------------------------------------------------------------- Follow me Facebook:-https://www.facebook.com/mohdkashif.a... Twittter:-https://twitter.com/kashifali6272 Google+:-https://plus.google.com/u/1/109449729... Instagram:https://www.instagram.com/kashif.6272/ -~-~~-~~~-~~-~- Please watch: "Nehru Place | Macbook Pro Skin Under ₹ 150 | Let's Explore #1" https://www.youtube.com/watch?v=LuW0URFdN34 -~-~~-~~~-~~-~-
Views: 98833 Tech Fire
In Depth - Data Encryption
 
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Data has become the essential part of our daily lives but the recent incidents have posed many security threats. Facebook data leak and questions over security of Adhaar data has raised so many concerns. UIDAI has claimed that their data is encrypted with the best encryption techniques and is unbreakable. We explore the technique and ways of data encryption in this episode. Anchor: Teena Jha
Views: 3962 Rajya Sabha TV
Public Key Cryptography: RSA Encryption Algorithm
 
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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: 557185 Art of the Problem
Caesar Cipher
 
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This tutorial will teach you how to encrypt and decrypt messages using the Caesar Cipher.-- Created using PowToon -- Free sign up at http://www.powtoon.com/ . Make your own animated videos and animated presentations for free. PowToon is a free tool that allows you to develop cool animated clips and animated presentations for your website, office meeting, sales pitch, nonprofit fundraiser, product launch, video resume, or anything else you could use an animated explainer video. PowToon's animation templates help you create animated presentations and animated explainer videos from scratch. Anyone can produce awesome animations quickly with PowToon, without the cost or hassle other professional animation services require.
Views: 138078 Lacey Wright
Xor Function - Applied Cryptography
 
01:18
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 17184 Udacity
Playfair Cipher Explained
 
04:20
An animated attempt of explaining the Playfair cipher. This tutorial includes rules of the cipher followed by an example to clear things up. This was a part of my final year project to create a learning aid. I decided to upload this so the animation won't go to waste. All feedbacks welcome. Special thanks to Olivia Beck for creating the background image
Views: 175165 Kenny Luminko
How secure is 256 bit security?
 
05:06
Supplement to the cryptocurrency video: How hard is it to find a 256-bit hash just by guessing and checking? What kind of computer would that take? Cryptocurrency video: https://youtu.be/bBC-nXj3Ng4 Thread for Q&A questions: http://3b1b.co/questions Several people have commented about how 2^256 would be the maximum number of attempts, not the average. This depends on the thing being attempted. If it's guessing a private key, you are correct, but for something like guessing which input to a hash function gives a desired output (as in bitcoin mining, for example), which is the kind of thing I had in mind here, 2^256 would indeed be the average number of attempts needed, at least for a true cryptographic hash function. Think of rolling a die until you get a 6, how many rolls do you need to make, on average? Music by Vince Rubinetti: https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown ------------------ 3blue1brown is a channel about animating math, in all senses of the word animate. And you know the drill with YouTube, if you want to stay posted on new videos, subscribe, and click the bell to receive notifications (if you're into that). If you are new to this channel and want to see more, a good place to start is this playlist: http://3b1b.co/recommended Various social media stuffs: Website: https://www.3blue1brown.com Twitter: https://twitter.com/3Blue1Brown Patreon: https://patreon.com/3blue1brown Facebook: https://www.facebook.com/3blue1brown Reddit: https://www.reddit.com/r/3Blue1Brown
Views: 991198 3Blue1Brown
Public key cryptography - Diffie-Hellman Key Exchange (full version)
 
08:38
The history behind public key cryptography & the Diffie-Hellman key exchange algorithm. We also have a video on RSA here: https://www.youtube.com/watch?v=wXB-V_Keiu8
Views: 620863 Art of the Problem
what is encrypted? How to encrypt phone explained in tamil
 
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what is encrypted? How to encrypt phone explained in tamil Encrypted format is secured data format..nobody can open this data without decryption key...it 's help you secured your highly confidential sensitive data 's...so watch video... LEARN-LIKE-SUBSCRIBE-SHARE 5 Apps you should remove in your android mobile in tamil https://youtu.be/r6G-KVszMT8 How to get voice notification on your Android in tamil https://youtu.be/x-Mgos9r4Ys U Dictionary: convert English language to Tamil https://youtu.be/G2gxCAc3A6g Best 10 Unknown Secret Hidden Settings in True Caller https://youtu.be/GDIKYP7efuo Remove unwanted object from a photo using mobile https://youtu.be/GDIKYP7efuo Best multitasking app for android 2017 https://youtu.be/YnyWs-tCX5U Useful mobile APP you should know || Type long messages using your voice 2017 https://youtu.be/51zQCyjB8P0 How to find unknown number detail? block unknown? https://youtu.be/lnrI__d8-J0 How to convert voice to text 200 lines 10 minutes https://youtu.be/Ldf1-nmUcE0 How to find hidden cameras with your mobile phone easy || hidden camera detector https://youtu.be/5i4_9HcI1VE Thing you should never Google..DON'T do it || Don't search this word in google? https://youtu.be/klbki8xOPYE Best secret tricks of google in your android phone || track information.. https://youtu.be/0FFxxoKnDxE How to measure vehicle speed,mobile app perfectly working https://youtu.be/fnMcynAjI7c Best latest photo face editing app for android phone from Microsoft https://youtu.be/sIROX_yaWOc What is the Norton ghost software?how to use brief explanation https://youtu.be/1s_xfp_HHmI How to view app history if someone clear them android phone https://youtu.be/qzqoXhXD_xE How to add a place in google maps permanently in tamil https://youtu.be/SvnOEM9TNw0 1.best online typewriter for all languages without knowledge || நம்பர் 1 கூகுள் உள்ளீடு கருவி https://youtu.be/zPZ2ZPIRHEw 2. mobile keyboard shortcuts easy to know ||மொபைல் கீபோர்டு குறுக்குவழிகள் . https://youtu.be/nEjSCWeGN50 3. Useful websites you wish you knew earlier ||இரண்டு உபயோகமான இணையதளங்கள் https://youtu.be/a-tQTH1wuFo 4. Top Amazing Websites you never know ||நீங்கள் அறிந்திராத அதிசயவைக்கும் இணையதளங்கள் ... https://youtu.be/4QasM8cLF68 5. how to Android speed up without apps ||1 நிமிடத்தில் ஆண்ட்ராய்டு போனை வேகமாக இயங்க வைப்பது எப்படி ? https://youtu.be/cwqjW3g0Q4I 6. google chrome tips & tricks tamil || கூகுளின் மிக எளிய வழிமுறைகள் https://youtu.be/MJTSGEOhSuw 7. How to track mobile location || Find lost mobiles || தொலைந்த தொலைபேசி கண்டுபிடிப்பது எப்படி ? https://youtu.be/wftG4ZQYoAE 8. How i know all bank details in one place ||நம் நாட்டின் வங்கி தகவல்கள் ஓரிடத்தில் அறிவது எப்படி? https://youtu.be/VkqEGVokCjY 9. How do you know if someone is spying on your phone || spy mobile கண்டறிவது எப்படி? https://youtu.be/sKCgoJteRx4 10. Android best hidden features in tamil || ஆண்ட்ராய்ட் போனில் மறைந்துள்ள சிறந்த விஷயங்கள் . https://youtu.be/Fkn8XZNqKyg
Views: 3485 mohatechintamil
Secret Key Exchange (Diffie-Hellman) - Computerphile
 
08:40
How do we exchange a secret key in the clear? Spoiler: We don't - Dr Mike Pound shows us exactly what happens. Mathematics bit: https://youtu.be/Yjrfm_oRO0w Computing Limit: https://youtu.be/jv2H9fp9dT8 https://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: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 205785 Computerphile
22. Cryptography: Encryption
 
01:24:15
MIT 6.046J Design and Analysis of Algorithms, Spring 2015 View the complete course: http://ocw.mit.edu/6-046JS15 Instructor: Srinivas Devadas In this lecture, Professor Devadas continues with cryptography, introducing encryption methods. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 16635 MIT OpenCourseWare
CISSP #40 - Domain 3 - Cryptography History and Goals
 
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Domain 3: Security Engineering
What is Cryptography In Hindi II Cryptography Details In Hindi II Cryptography Explained In Hindi
 
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Hindi Mein Jaankari Amazon Shopping Link:- https://www.amazon.com/shop/hindimeinjaankari --~-- What is Cryptography In Hindi II Cryptography Details In Hindi II Cryptography Explained In Hindi Hello Friends welcome to my channel Hindi Mein Jaankari...HMJ Dosto aaj ke is video mein hum baat karenge what is cryptography dosto agar aap internet user hain to aapne kabhi na kabhi cryptography ke baare mein jarur suna hoga agar nahin to is video ko pura dekhe dosto aaj ke is video mein aapko cryptography details in hindi mein batayenge aur yeh kya kaam karta hai aur cryptography ke kya fayade hain yeh pura chapter cryptography explained in hindi mein karenge. Dosto jab bhi aap koi email ya message kisi ko bhejte hain yar phir aapka jo data hai aap jiske saath share karna chahte aur aap chahte ki aapta data private rahe aur koi bhi us data ko server aur aapke beech se na chura sake to dosto is cryptography kahte hain dosto ismein jo bhi aapka data hota use encrypt kar dia jaata hai aur jiske saath aap data ko share karte hai woh us data ko decrypt karta hai aur use read kar leta hai dosto jitni bhi website hain jine address baar mein https likha aata hai green colour mein woh ssl protect websites hote hain aapke data ko aapke information ko encrypt kar ke server mein store karti hain taki aapki information ko koi na chura sake. Dosto what is cryptography ya cryptography details in hindi ke baare mein aapko is video mein bahut kuch pata chalega dosto cryptography ko 2 parts mein devide kia hai symetric cryptography aur asymetric cryptography. ====================================================== PLZ …..LIKE………SHARE………COMMENT……..SUBSCRIBE…. Follow Us On Social Media:- Follow Us On Facebook:- https://www.facebook.com/Hindi-Mein-Jaankari-178986192654764/ Follow Us On Twitter:-https://twitter.com/meinjaankari Follow Us On Instagram:-https://www.instagram.com/hindimeinjaankari/ Follow Us On Google Plus:- https://plus.google.com/u/0/114440527599226210280 Follow Us On Pinterest:- www.pinterest.com/hindimeinjaankari ====================================================== Background Music:- Ishikari Lore by Kevin MacLeod is licensed under a Creative Commons Attribution license http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100192
Views: 16808 Hindi Mein Jaankari
Why It's So Hard For The Government To Hack Your Phone
 
04:34
The FBI is currently in a battle with Apple to allow encrypted phones be unlocked, but how does encryption even work? How Powerful Is Apple? ►►►► http://bit.ly/1OBOqRk Sign Up For The TestTube Newsletter Here ►►►► http://bit.ly/1myXbFG How Secure Are Fingerprint Scanners? ►►►►http://bit.ly/1R7K5qX Read More: ADVANCED ENCRYPTION STANDARD (AES) http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf "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." "This standard may be used by Federal departments and agencies when an agency determines that sensitive (unclassified) information" Analysis of Avalanche Effect in Plaintext of DES using Binary Codes http://www.ijettcs.org/Volume1Issue3/IJETTCS-2012-10-25-097.pdf "Cryptography provides a method for securing and authenticating the transmission of information across insecure communication channels." "Symmetric keys encryption or secret key encryption identical key is used by sender and receiver." "Data can be recovered from cipher only by using exactly the same key used to encipher it." Advanced Encryption Standard (AES) http://searchsecurity.techtarget.com/definition/Advanced-Encryption-Standard "The Advanced Encryption Standard became effective as a federal government standard in 2002" "ES is one of the Suite B cryptographic algorithms used by NSA's Information Assurance Directorate in technology approved for protecting national security systems." iOS Security http://www.apple.com/business/docs/iOS_Security_Guide.pdf#page=12 "On mobile devices, speed and power efficiency are critical. Cryptographic operations are complex and can introduce performance or battery life problems if not designed and implemented with these priorities in mind." "Every iOS device has a dedicated AES 256 crypto engine built into the DMA path between the flash storage and main system memory, making file encryption highly efficient" ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos twice daily. Watch More DNews on TestTube http://testtube.com/dnews Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel DNews on Twitter http://twitter.com/dnews Trace Dominguez on Twitter https://twitter.com/tracedominguez Julia Wilde on Twitter https://twitter.com/julia_sci DNews on Facebook https://facebook.com/DiscoveryNews DNews on Google+ http://gplus.to/dnews Discovery News http://discoverynews.com Download the TestTube App: http://testu.be/1ndmmMq Sign Up For The TestTube Mailing List: http://dne.ws/1McUJdm
Views: 327916 Seeker
What is Modular Arithmetic - Introduction to Modular Arithmetic - Cryptography - Lesson 2
 
04:48
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: 149048 Learn Math Tutorials
Crypto Architecture: The Basic Operational Elements of Cryptography
 
09:12
The Plaintext, the Ciphertext, the encryption key and the decryption key -- how they fit, and together define the cryptographic process.
Views: 804 Gideon Samid
Secure Communication
 
04:16
Secure Communication: Public Key Cryptography ------------------------------------------------------------------------------ The internet is a very powerful and useful tool of communication, information, and connectivity. It is very important to keep yourself safe and secure online. There are many ways to be targeted, and this video will teach you how to keep private while communicating on the internet. The best way to secure a message is though encryption. Ciphers and cryptography have been used throughout history to keep data safe from prying eyes. Encryption ----------------- What is encryption? Encryption is the conversion of human readable data, such as a message, to a gibberish called ciphertext. The ciphertext can then only be decoded and read using a certain key or password. In this example, encryption converts "This is really fun!" to a whole bunch of letters and numbers that are unreadable. Examples: Alice and Bob ---------------------------------------- Normal Communication: Lets say that Alice and Bob are best friends who want to stay in touch over the internet. They text each other, send emails, or use a messaging app. This works, but there is no way of knowing who might be listening in. Intercepted Communication: Another person, who we'll call Eve, can intercept any data Alice and Bob send to each other. This is called a man-in-the-middle attack, and allows Eve to read anything transmitted, leaving Alice and Bob with no privacy, and no knowledge that they were overheard. Encrypted Communication: This is where encryption comes in. If Eve can't read the data, it becomes useless to her! Alice encrypts the data, represented here by the lock, then sends the encrypted message to Bob. However, Bob needs the key or password to unlock the encrypted message. Alice can't just send the key, Eve could get it! Alice and Bob also can't meet up in person, the internet is global and they could be anywhere. So how does Alice get the key safely to Bob so he can unlock her message? Public Key Exchange: The solution is public key exchange. Alice and Bob each receive open locks, called public keys. They give these open locks to each other and the world, and keep the key to these locks private. Now if Bob wants to send Alice a message, he encrypts or locks his message using her open lock and sends her the message. She can then open the message using her own matching private key. Use of Public Key Cryptography --------------------------------------------------- That was the basic principles of how public key exchange works. It is used to secure data in many places, including HTTPS in websites, which is the little green lock you may have seen in your browser. Both types of locks are secure. If you want to use public key cryptography yourself, there are many tools available. How to Communicate Securely Yourself With Public Key Cryptography ---------------------------------------------------------------------------------------------------------------- OnlinePGP (http://onlinepgp.ws/) is a website which lets you create your own public and private keys. You enter some basic information, a password, and how secure you want to be. Then you can generate your own key pair. Your public key is your open lock that you can share with everybody. Your private key you use to open messages secured with your lock. Now if you want to send someone a secure message, first write a message, then use their public key, the open lock, to encrypt that message. The encrypted message can now only be read by the person whose public key you used. Copy and paste it and send it to them. To decrypt and read it, they paste the secure message, along with their private key and their own password, and then hit decrypt. You have now successfully communicated securely! Easily Communicate Securely ------------------------------------------------ That was a lot of work to send a secure message. Luckily, there are many great apps which do all of this for you! Telegram is the best secure communication client today. It is on your phone, your computer, and the web. It uses the principles you just learned and gives you the privacy you deserve on the internet. Security Shouldn't Be Hard. ===================================== Clips of Girl with Phone, Person Typing, and Cryptographic Machine from http://www.videvo.net/, and are Creative Commons. All other clips are recorded or animated myself. This video is completely Creative Commons and Free Use. Background music is Odyssey from http://incompetech.com/, also Creative Commons.
Views: 1464 hawkfalcon
DEFCON 20: Crypto and the Cops: the Law of Key Disclosure and Forced Decryption
 
48:00
Speaker: MARCIA HOFMANN SENIOR STAFF ATTORNEY, ELECTRONIC FRONTIER FOUNDATION Can the government force you to turn over your encryption passphrase or decrypt your data? The law surrounding police attempts to force decryption is developing at breakneck speed, with two major court decisions this year alone. This talk will start off with an in-depth explanation of the Fifth Amendment privilege against self-incrimination, its origins, and how it applies to government attempts to force disclosure of keys or decrypted versions of data in the United States. We'll also discuss law enforcement authority to demand passphrases and decryption of data stored with third parties, and survey key disclosure laws in other countries. Marcia Hofmann is a senior staff attorney at the Electronic Frontier Foundation, where she works on a broad range of digital civil liberties issues including computer security, electronic privacy, and free expression. She currently focuses on computer crime and EFF's Coders' Rights Project, which promotes innovation and protects the rights of curious tinkerers and researchers in their cutting-edge exploration of technology. Prior to joining EFF, Marcia was staff counsel and director of the Open Government Project at the Electronic Privacy Information Center (EPIC). For more information visit: http://bit.ly/defcon20_information To download the video visit: http://bit.ly/defcon20_videos Playlist DEFCON 20: http://bit.ly/defcon20_playlist
Views: 16950 Christiaan008
How to encrypt and decrypt passwords using Cipher Algorithm and how it works? BDSide
 
02:05
a cipher (or cypher) is an algorithm for performing encryption or decryption—a series of well-defined steps that can be followed as a procedure. An alternative, less common term is encipherment. To encipher or encode is to convert information into cipher or code. In common parlance, "cipher" is synonymous with "code", as they are both a set of steps that encrypt a message; however, the concepts are distinct in cryptography, especially classical cryptography. To get the full source code: http://www.bdside.com/tutorials/how-to-encrypt-and-decrypt-passwords-in-android.html
Views: 54 BDSide
[HINDI] What is Cryptography? | Simple Practical in Android | Cryptography क्या होता है?
 
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Link to My Blog:- http://techdjdey.blogspot.in/ Video Editor used:- HitFilm 4 Express. https://hitfilm.com/ Screen recorder used:- iSpring Free Cam 8. https://www.ispringsolutions.com/ispring-free-cam Music:- Elektronomia-Sky High. https://www.youtube.com/watch?v=TW9d8vYrVFQ PLEASE LIKE AND SHARE THIS VIDEO. SUBSCRIBE to my Channel here:- https://www.youtube.com/channel/UCFKcqq9IOdwHdgfq6GEL8gw?sub_confirmation=1 My other videos:- https://www.youtube.com/channel/UCFKcqq9IOdwHdgfq6GEL8gw/videos IGNORE THESE BELOW: 1. what is the difference between steganography and cryptography c cryptography c cryptography example c cryptography library c cryptography tutorial cryptographic protocol e cryptography f# cryptography lightweight cryptography nonlinear cryptography o cryptography r cryptography what does cryptography have to do with math what does cryptography look like today what is a certificate in cryptography what is a cipher in cryptography what is a crib in cryptography what is a generator cryptography what is a hash cryptography what is a nonce in cryptography what is a public key cryptography what is a quantum cryptography what is a seed in cryptography what is a symmetric cryptography what is advantages of cryptography what is asymmetric key cryptography what is biometric cryptography what is bitcoin cryptography what is broken cryptography what is cbc cryptography what is chaos cryptography what is chaotic cryptography what is cipher cryptography what is classical cryptography what is cloud cryptography what is confusion and diffusion in cryptography with example what is conventional cryptography what is cryptographic hash function what is cryptographic hash functions examples what is cryptography what is cryptography algorithm what is cryptography and cryptanalysis what is cryptography and encryption what is cryptography and history what is cryptography and how is it used what is cryptography and how is it used in it security what is cryptography and its importance what is cryptography and its types what is cryptography and network security what is cryptography and network security ppt what is cryptography and network security wikipedia what is cryptography and number theory what is cryptography and steganography what is cryptography and theoretical informatics what is cryptography and why is it important what is cryptography and why is it used what is cryptography basics what is cryptography computer what is cryptography define the process of encryption and decryption what is cryptography definition what is cryptography doc what is cryptography encryption what is cryptography engineering what is cryptography error what is cryptography explain what is cryptography explain in detail what is cryptography explain its types what is cryptography hashing what is cryptography how is it used in it security what is cryptography in .net what is cryptography in c# what is cryptography in computer what is cryptography in computer network what is cryptography in computer security what is cryptography in cyber security what is cryptography in hindi what is cryptography in information security what is cryptography in java what is cryptography in mathematics what is cryptography in network security what is cryptography in networking what is cryptography in operating system what is cryptography in os what is cryptography in registry what is cryptography in security what is cryptography in simple language what is cryptography in web security what is cryptography key what is cryptography key management what is cryptography law what is cryptography library what is cryptography method what is cryptography module what is cryptography network security what is cryptography next generation what is cryptography pdf what is cryptography ppt what is cryptography provide an example what is cryptography quora what is cryptography rng seed what is cryptography salary what is cryptography salt what is cryptography service what is cryptography slideshare what is cryptography software what is cryptography system what is cryptography teach ict what is cryptography technique what is cryptography technology what is cryptography tools what is cryptography tutorial point what is cryptography types what is cryptography used for what is cryptography used for today what is cryptography video what is cryptography virus what is cryptography wikipedia what is cryptography with diagram what is cryptography with example what is cryptography yahoo what is cryptography yahoo answers what is cryptography youtube what is data cryptography what is des cryptography what is difference between cryptography and encryption what is difference between cryptography and steganography what is diffusion cryptography what is digital cryptography what is discrete logarithm in cryptography what is distributed cryptography what is dna cryptography what is dsa cryptography what is ecc cryptography what is elementary cryptography
Views: 2309 Dhrubajyoti Dey
Cryptography 101 - The Basics
 
08:57
In this video we cover basic terminology in cryptography, including what is a ciphertext, plaintext, keys, public key crypto, and private key crypto.
Views: 279567 Pico Cetef
What is FINANCIAL CRYPTOGRAPHY? What does FINANCIAL CRYPTOGRAPHY mean?
 
03:06
What is FINANCIAL CRYPTOGRAPHY? What does FINANCIAL CRYPTOGRAPHY mean? FINANCIAL CRYPTOGRAPHY meaning - FINANCIAL CRYPTOGRAPHY definition - FINANCIAL CRYPTOGRAPHY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Financial cryptography (FC) is the use of cryptography in applications in which financial loss could result from subversion of the message system. Financial cryptography is distinguished from traditional cryptography in that for most of recorded history, cryptography has been used almost entirely for military and diplomatic purposes. Financial cryptography includes the mechanisms and algorithms necessary for the protection of financial transfers, in addition to the creation of new forms of money. Proof of work and various auction protocols fall under the umbrella of Financial Cryptography. Hashcash is being used to limit spam. Financial cryptography has been seen to have a very broad scope of application. Ian Grigg sees financial cryptography in seven layers, being the combination of seven distinct disciplines: cryptography, software engineering, rights, accounting, governance, value, and financial applications. Business failures can often be traced to the absence of one or more of these disciplines, or to poor application of them. This views Financial Cryptography as an appropriately cross-discipline subject. Indeed, inevitably so, given that finance and cryptography are each built upon multiple disciplines. Cryptographers think of the field as originating in the work of Dr David Chaum who invented the blinded signature. This special form of a cryptographic signature permitted a virtual coin to be signed without the signer seeing the actual coin, and permitted a form of digital token money that offered untraceability. This form is sometimes known as Digital currency. A system that was widely used during the 1970s-1990s and previously developed cryptographic mechanism is the Data Encryption Standard, which was used primarily for the protection of electronic funds transfers. However, it was the work of David Chaum that excited the cryptography community about the potential of encrypted messages as actual financial instruments. As part of a business model, Financial Cryptography followed the guide of cryptography and only the simplest ideas were adopted. Account money systems protected by SSL such as PayPal and e-gold were relatively successful, but more innovative mechanisms, including blinded token money, were not. Financial cryptography is to some extent organized around the annual meeting of the International Financial Cryptography Association, which is held each year in a different location.
Views: 96 The Audiopedia
Fundamentals of Cryptography
 
19:06
In this video, I explain the fundamentals concept of cryptography like types of crypt analysis, symmetric & asymmetric key algorithms, encryption & decryption process, overview of cryptography fundamentals, basic terminology used in cryptography, brute force attack, social engineering attack, implementation attack etc.. -~-~~-~~~-~~-~- Dear Friends please watch my video lecture and hit like, subscribes and don't forget to share with your friends. -~-~~-~~~-~~-~-
Views: 481 Kavita Jakhar
The Internet: Encryption & Public Keys
 
06:40
Mia Epner, who works on security for a US national intelligence agency, explains how cryptography allows for the secure transfer of data online. This educational video explains 256 bit encryption, public and private keys, SSL & TLS and HTTPS. Learn more at http://code.org/ Help us translate into your language: http://code.org/translate/videos Stay in touch with us! • on Twitter https://twitter.com/codeorg • on Facebook https://www.facebook.com/Code.org • on Instagram https://instagram.com/codeorg • on Tumblr https://blog.code.org • on LinkedIn https://www.linkedin.com/company/code... • on Google+ https://google.com/+codeorg Help us caption & translate this video! https://amara.org/v/HGaS/
Views: 216371 Code.org
DEF CON 24 - Crypto: State of the Law
 
44:35
Nate Cardozo Senior Staff Attorney, Electronic Frontier Foundation Strong end-to-end encryption is legal in the United States today, thanks to our victory in what’s come to be known as the Crypto Wars of the 1990s. But in the wake of Paris and San Bernardino, there is increasing pressure from law enforcement and policy makers, both here and abroad, to mandate so-called backdoors in encryption products. In this presentation, I will discuss in brief the history of the first Crypto Wars, and the state of the law coming into 2016. I will then discuss what happened in the fight between Apple and the FBI in San Bernardino and the current proposals to weaken or ban encryption, covering proposed and recently enacted laws in New York, California, Australia, India, and the UK. Finally, I will discuss possible realistic outcomes to the Second Crypto Wars, and give my predictions on what the State of the Law will be at the end of 2016. Nate Cardozo is a Senior Staff Attorney on the Electronic Frontier Foundation’s digital civil liberties team. In addition to his focus on free speech and privacy litigation, Nate works on EFF’s cryptography policy and the Coders’ Rights Project. Nate has projects involving export controls on software, state-sponsored malware, automotive privacy, government transparency, hardware hacking rights, anonymous speech, electronic privacy law reform, Freedom of Information Act litigation, and resisting the expansion of the surveillance state. A 2009-2010 EFF Open Government Legal Fellow, Nate has a B.A. in Anthropology and Politics from U.C. Santa Cruz and a J.D. from U.C. Hastings. Twitter: @ncardozo
Views: 1042 HackersOnBoard
Cryptography lecture 0
 
05:45
cryptography and network security
Views: 121 itnoa itnoa1
Lecture 1: Introduction to Cryptography by Christof Paar
 
01:17:25
For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com. The book chapter "Introduction" for this video is also available for free at the website (click "Sample Chapter").
Introduction to Cryptography and system security | CSS series #1
 
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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: 122169 Last moment tuitions
What is TRANSPORT LAYER SECURITY? What does TRANSPORT LAYER SECURITY mean?
 
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What is TRANSPORT LAYER SECURITY? What does TRANSPORT LAYER SECURITY mean? TRANSPORT LAYER SECURITY meaning - TRANSPORT LAYER SECURITY definition - TRANSPORT LAYER SECURITY explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL), both frequently referred to as "SSL", are cryptographic protocols that provide communications security over a computer network. Several versions of the protocols find widespread use in applications such as web browsing, email, Internet faxing, instant messaging, and voice-over-IP (VoIP). Websites use TLS to secure all communications between their servers and web browsers. The Transport Layer Security protocol aims primarily to provide privacy and data integrity between two communicating computer applications.:3 When secured by TLS, connections between a client (e.g., a web browser) and a server (e.g., wikipedia.org) have one or more of the following properties: The connection is private (or secure) because symmetric cryptography is used to encrypt the data transmitted. The keys for this symmetric encryption are generated uniquely for each connection and are based on a shared secret negotiated at the start of the session (see TLS handshake protocol). The server and client negotiate the details of which encryption algorithm and cryptographic keys to use before the first byte of data is transmitted (see Algorithm below). The negotiation of a shared secret is both secure (the negotiated secret is unavailable to eavesdroppers and cannot be obtained, even by an attacker who places themselves in the middle of the connection) and reliable (no attacker can modify the communications during the negotiation without being detected). The identity of the communicating parties can be authenticated using public-key cryptography. This authentication can be made optional, but is generally required for at least one of the parties (typically the server). The connection ensures integrity because each message transmitted includes a message integrity check using a message authentication code to prevent undetected loss or alteration of the data during transmission.:3 In addition to the properties above, careful configuration of TLS can provide additional privacy-related properties such as forward secrecy, ensuring that any future disclosure of encryption keys cannot be used to decrypt any TLS communications recorded in the past. TLS supports many different methods for exchanging keys, encrypting data, and authenticating message integrity (see Algorithm below). As a result, secure configuration of TLS involves many configurable parameters, and not all choices provide all of the privacy-related properties described in the list above (see authentication and key exchange table, cipher security table, and data integrity table). Attempts have been made to subvert aspects of the communications security that TLS seeks to provide and the protocol has been revised several times to address these security threats (see Security). Developers of web browsers have also revised their products to defend against potential security weaknesses after these were discovered (see TLS/SSL support history of web browsers.) The TLS protocol comprises two layers: the TLS record protocol and the TLS handshake protocol. TLS is a proposed Internet Engineering Task Force (IETF) standard, first defined in 1999 and updated in RFC 5246 (August 2008) and RFC 6176 (March 2011). It builds on the earlier SSL specifications (1994, 1995, 1996) developed by Netscape Communications for adding the HTTPS protocol to their Navigator web browser.
Views: 3082 The Audiopedia
Password Cracking - Computerphile
 
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'Beast' cracks billions of passwords a second, Dr Mike Pound demonstrates why you should probably change your passwords... Please note,at one point during the video Mike suggests using SHA512. Please check whatever the recommended process is at the time you view the video. How NOT to Store Passwords: https://youtu.be/8ZtInClXe1Q Password Choice: https://youtu.be/3NjQ9b3pgIg Deep Learning: https://youtu.be/l42lr8AlrHk Cookie Stealing: https://youtu.be/T1QEs3mdJoc 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. More at http://www.bradyharan.com
Views: 1500009 Computerphile
The Chinese Remainder Theorem made easy
 
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A solution to a typical exam question. See my other videos https://www.youtube.com/channel/UCmtelDcX6c-xSTyX6btx0Cw/.
Views: 282726 Randell Heyman