Home
Search results “Define decryption in cryptography history”

10:01
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 -~-~~-~~~-~~-~-

06:45
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: 98943 Skill Gurukul

08:21
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: 785445 SciShow

08:10
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: 5678 Sundeep Kumar

10:23
This lesson explains how to encrypt and decrypt a message using a transposition cipher. Site: http://mathispower4u.com
Views: 57038 Mathispower4u

05:14
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: 84431 Technical Sagar

04:40
How does public-key cryptography work? What is a private key and a public key? Why is asymmetric encryption different from symmetric encryption? I'll explain all of these in plain English! 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be 👍🏻 Like my Facebook page: https://www.facebook.com/savjee

25:49
Views: 1250 Dr. Julian Hosp

07:59
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: 446874 World Science Festival

03:24
Domain 3: Security Engineering

02:36

04:12

06:11
Brief History of Cryptography
Views: 188 shaan1111

02:16
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: 129568 Lacey Wright

16:31
RSA Public Key Encryption Algorithm (cryptography). How & why it works. Introduces Euler's Theorem, Euler's Phi function, prime factorization, modular exponentiation & time complexity. Link to factoring graph: http://www.khanacademy.org/labs/explorations/time-complexity
Views: 533556 Art of the Problem

25:12
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: 3831 Rajya Sabha TV

10:50
Data- Text, audio,image, video. Compression- reducing the size of data. Encryption- making the data secret. (sometimes data, in general, is referred to as text) Stay tuned for more lectures on DCE. If you have liked the video, Please ********** LIKE, SUBSCRIBE, COMMENT & SHARE***************
Views: 224 Clear Concepts

01:31

07:37
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: 3113 Szymon Machajewski

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: 607477 Art of the Problem

11:25
find relevant notes at-https://viden.io/
Views: 57735 LearnEveryone

18:50
Views: 120 Osiris Salazar

02:03
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: 856 ICO startups

03:57
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: 91316 Tech Fire

03:04
Thanks for watching! I'd love it if you could support me by subscribing and sharing it with your friends. Thanks!
Views: 131066 Victor Dozal

06:05
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: 2779 mohatechintamil

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: 460 Kavita Jakhar

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: 201768 Code.org

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: 38 BDSide

02:56

03:35
cryptography explain in Hindi ....... cryptography lecture, cryptography, cryptography in hindi, cryptography beginners, cryptography basics tutorial, cryptography definition, cryptography explained, cryptography hindi, cryptography history, cryptography introduction . . . . . Like, Share, Support, Subscribe!!! Youtube: https://www.youtube.com/channel/UCXBHB2v2EizKrqOu5YmR8uQ Website: http://www.technoawareness.in/ Facebook: https://www.facebook.com/technoawareness1/ Instagram: https://www.instagram.com/technoawareness8/ Twitter: https://twitter.com/AwarenessTechno linkedin: https://www.linkedin.com/in/techno-awareness-580527168/ Quora: https://www.quora.com/profile/Techno-Awareness/ Reddit: https://www.reddit.com/user/technoawareness FB group: https://bit.ly/2w6uHJX
Views: 77 TECHNO AWARENESS

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: 16348 Christiaan008

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: 871745 3Blue1Brown

07:05
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: 2183 Dhrubajyoti Dey

16:02
In this video I'm explaining what is that Galois Counter Mode that provides Authenticated Encryption with Associated Data (AEAD). You must have heard it combined with AES, and maybe used in TLS, ... This is just a small explanation, you can get more on the NIST specs. Errata (thanks to Casper Kejlberg-Rasmussen in the comments) error at 11:21, the last M_H that is applied before going into the TAG should not be there if you compare your drawing to the diagram on https://en.wikipedia.org/wiki/Galois/Counter_Mode. Be sure to follow me on twitter :) https://twitter.com/lyon01_david and to subscribe to my blog! http://www.cryptologie.net Cheers!
Views: 17299 David Wong

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: 15792 MIT OpenCourseWare

20:20
'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: 1414325 Computerphile

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: 274789 Pico Cetef

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: 993 HackersOnBoard

01:30:50
For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com

04:34
Views: 326217 Seeker

02:11
Views: 45 Ronaldo Lett

03:05
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 2205 Udacity

38:24
Lately, several backdoors in cryptographic constructions, protocols and implementations have been surfacing in the wild: Dual-EC in RSA's B-Safe product, a modified Dual-EC in Juniper's operating system ScreenOS and a non-prime modulus in the open-source tool socat. Many papers have already discussed the fragility of cryptographic constructions not using nothing-up-my-sleeve numbers, as well as how such numbers can be safely picked. However, the question of how to introduce a backdoor in an already secure, safe and easy to audit implementation has so far rarely been researched (in the public). BIO: David Wong (Twitter: @lyon01_david) is a Security Consultant at the Cryptography Services team of NCC Group. He has been working in Security for over a year now, being part of several publicly funded open source audits such as the OpenSSL and the Let's Encrypt ones. He has conducted research in many domains in cryptography, publishing whitepapers as well as writing numerous editions of the Cryptography Services private bulletin. He has been a trainer for cryptography courses at BlackHat US 2015 and BlackHat US 2016.
Views: 3325 DEFCONConference

51:16
Slides here: https://defcon.org/images/defcon-22/dc-22-presentations/White-Green/DEFCON-22-Kenneth-White-and-Matthew-Green-The-Open-Crypto-Audit-Project-Updated.pdf The Open Crypto Audit Project Kenneth White CO-FOUNDER, OPEN CRYPTO AUDIT PROJECT Matthew Green RESEARCH PROFESSOR, JOHNS HOPKINS UNIVERSITY Join us for the story of the origins and history of the Open Crypto Audit Project (OCAP). OCAP is a community-driven global initiative which grew out of the first comprehensive public audit and cryptanalysis of the widely used encryption software TrueCrypt®. Our charter is to provide technical assistance to free and open source software projects in the public interest. We serve primarily as a coordinator for volunteers and as a funding mechanism for technical experts in security, software engineering, and cryptography. We conduct analysis and research on FOSS and other widely software, and provide highly specialized technical assistance, analysis and research on free and open source software. This talk will present how we audited TrueCrypt, detailing both the Phase I security assessment, and the Phase II cryptanalysis. Looking forward, in light of GotoFail and HeartBleed, we will discuss future plans for our next audit projects of other open source critical infrastructure. Kenneth White is a co-founder of the CBX Group, and formerly principal scientist and senior security R&D engineer at Social & Scientific Systems. His work focuses on cloud security, machine learning, and distributed database architecture. At SSS, White led the Biomedical Informatics team that designed and runs the operations center for the largest clinical trial network in the world, with research centers in over 100 countries. Together with Matthew Green, White co-founded the TrueCrypt audit project, a community-driven initiative to conduct the first comprehensive cryptanalysis and public security audit of the widely used TrueCrypt encryption software. White holds a MEd from Harvard and is a PhD candidate in neuroscience and cognitive science, with research focusing on expert systems, real-time classification and machine learning. He is a technical reviewer for the Software Engineering Institute, and publishes and speaks frequently on computational neuroscience, signal processing, and security engineering. Twitter: @kennwhite Matthew D. Green, PhD is a professor of computer science at Johns Hopkins University. He teaches applied cryptography and builds secure systems. Green trained under Susan Hohenberger and Avi Rubin, and his research includes techniques for privacy-enhanced information storage, anonymous payment systems, and bilinear map-based cryptography. Green formerly served as a senior research staff member at AT&T Labs. Together with Kenneth White, he co-founded the TrueCrypt audit project, a community-driven initiative to conduct the first comprehensive cryptanalysis and public security audit of the widely used TrueCrypt encryption software. He blogs at Cryptography Engineering, and talks about cryptography and privacy. Twitter: @matthew_d_green Web: https://opencryptoaudit.org/people
Views: 3412 DEFCONConference

03:29
in this video we discuss about what is cryptography exactly.terminology used in cryptography such as(plain text,cipher text,encryption,decryption,crypta analysis etc.).and one example to know what is cryptography. whatch this video till the end to know more about this topic.like this video and please share this video to your friends. and don't forget to subscribe my channel for more interesting topics.
Views: 993 manoj rane

01:34
"It is perfectly sound and usable into the future." Part of the Giants Among Us series in celebration of RSA Conference's 20th anniversary
Views: 43594 RSA Conference

06:33
Ciphertexts produced by any short key ciphers do commit to the single plaintext that generated them. No equivocation. This commitment is the basis for brute-force cryptanalysis, and also the basis for probability-modified, much more efficient, cryptanalysis. It condemns today's master ciphers (e.g. AES) to sustain ongoing erosion of their efficacy.
Views: 504 Gideon Samid

04:23
What is DATA IN USE? What does DATA IN USE mean? DATA IN USE meaning - DATA IN USE definition - DATA IN USE explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Data in use is an information technology term referring to active data which is stored in a non-persistent digital state typically in computer random access memory (RAM), CPU caches, or CPU registers. Data in use is used as a complement to the terms data in transit and data at rest which together define the three states of digital data. While data in use most commonly refers to data in computer memory, some Cloud Software-as-a-Service (SaaS) providers refer to data in use as any data currently being processed by applications. Because of its nature, Data in Use is of increasing concern to businesses, government agencies and other institutions. Data in use, or memory, can contain sensitive data including digital certificates, encryption keys, intellectual property (software algorithms, design data), and personally identifiable information. Compromising data in use enables access to encrypted data at rest and data in motion. For example, someone with access to random access memory can parse that memory to locate the encryption key for data at rest. Once they have obtained that encryption key, they can decrypt encrypted data at rest. Threats to data in use can come in the form of cold boot attacks, malicious hardware devices, and bootkits. Encryption, which prevents data visibility in the event of its unauthorized access or theft, is commonly used to protect Data in Motion and Data at Rest and increasingly recognized as an optimal method for protecting Data in Use. There have been multiple projects to encrypt memory. Microsoft Xbox systems are designed to provide memory encryption and the company PrivateCore presently has a commercial software product vCage to provide attestation along with full memory encryption for x86 servers. Several papers have been published highlighting the availability of security-enhanced x86 and ARM commodity processors. In that work, an ARM Cortex A8 processor is used as the substrate on which a full memory encryption solution is built. Process segments (for example, stack, code or heap) can be encrypted individually or in composition. This work marks the first full memory encryption implementation on a mobile general-purpose commodity processor. The system provides both confidentiality and integrity protections of code and data which are encrypted everywhere outside the CPU boundary. Operating system kernel patches such as TRESOR and Loop-Amnesia modify the operating system so that CPU registers can be used to store encryption keys and avoid holding encryption keys in RAM. While this approach is not general purpose and does not protect all data in use, it does protect against cold boot attacks. Encryption keys are held inside the CPU rather than in RAM so that data at rest encryption keys are protected against attacks that might compromise encryption keys in memory. Enclaves enable an “enclave” to be secured with encryption in RAM so that enclave data is encrypted while in RAM but available as clear text inside the CPU and CPU cache. Intel Corporation has introduced the concept of “enclaves” as part of its Software Guard Extensions. Intel revealed an architecture combining software and CPU hardware in technical papers published in 2013. Several cryptographic tools, including secure multi-party computation and homomorphic encryption, allow for the private computation of data on untrusted systems. Data in use could be operated upon while encrypted and never exposed to the system doing the processing.
Views: 174 The Audiopedia

05:50
Contributory Broadcast Encryption with Efficient Encryption and Short Ciphertexts TO GET THIS PROJECT IN ONLINE OR THROUGH TRAINING SESSIONS CONTACT: Chennai Office: JP INFOTECH, Old No.31, New No.86, 1st Floor, 1st Avenue, Ashok Pillar, Chennai – 83. Landmark: Next to Kotak Mahendra Bank / Bharath Scans. Landline: (044) - 43012642 / Mobile: (0)9952649690 Pondicherry Office: JP INFOTECH, #45, Kamaraj Salai, Thattanchavady, Puducherry – 9. Landmark: Opp. To Thattanchavady Industrial Estate & Next to VVP Nagar Arch. Landline: (0413) - 4300535 / Mobile: (0)8608600246 / (0)9952649690 Email: [email protected], Website: www.jpinfotech.org, Blog: www.jpinfotech.blogspot.com Traditional broadcast encryption (BE) schemes allow a sender to securely broadcast to any subset of members but require a trusted party to distribute decryption keys. Group key agreement (GKA) protocols enable a group of members to negotiate a common encryption key via open networks so that only the group members can decrypt the ciphertexts encrypted under the shared encryption key, but a sender cannot exclude any particular member from decrypting the ciphertexts. In this paper, we bridge these two notions with a hybrid primitive referred to as contributory broadcast encryption (ConBE). In this new primitive, a group of members negotiate a common public encryption key while each member holds a decryption key. A sender seeing the public group encryption key can limit the decryption to a subset of members of his choice. Following this model, we propose a ConBE scheme with short ciphertexts. The scheme is proven to be fully collusion-resistant under the decision n-Bilinear Diffie-Hellman Exponentiation (BDHE) assumption in the standard model. Of independent interest, we present a new BE scheme that is aggregatable. The aggregatability property is shown to be useful to construct advanced protocols.
Views: 1432 jpinfotechprojects

The great debaters essay questions
Is euthanasia right or wrong essay
How to write a short summary essay
Unit 20 promoting health education essay questions
Discovery of insulin essay writing