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How to Solve a Cryptogram - Twitterati Cryptograms
 
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How to solve cryptograms, cryptoquips, and cryptoquotes. For more puzzles, visit http://www.twitteraticryptograms.com.
Views: 25064 Tammy Donroe
Uncrackable Pen & Paper Cryptography
 
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Why there is always a safe place for PEOPLE to communicate
Views: 2518 RevK
Top 10 Uncracked Codes and Ciphers
 
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Not even the greatest minds of the world could decipher these codes. Join http://www.WatchMojo.com as we count down our picks for the Top 10 Uncracked Codes and Ciphers. Check us out at http://www.Twitter.com/WatchMojo, http://instagram.com/watchmojo and http://www.Facebook.com/WatchMojo. Also, check out our interactive Suggestion Tool at http://www.WatchMojo.com/suggest :) Special thanks to our user kenn1987 for submitting this idea through our Suggest Tool at http://www.WatchMojo.com/Suggest Check out the voting page here, http://watchmojo.com/suggest/Top+10+Uncracked+Codes/Ciphers If you want to suggest an idea for a WatchMojo video, check out our interactive Suggestion Tool at http://www.WatchMojo.com/suggest :) Want a WatchMojo cup, mug, t-shirts, pen, sticker and even a water bottle? Get them all when you order your MojoBox gift set here: http://watchmojo.com/store/xmas.php WatchMojo is a leading producer of reference online video content, covering the People, Places and Trends you care about. We update DAILY with 2-3 Top 10 lists, Origins, Biographies, Versus clips on movies, video games, music, pop culture and more!
Views: 511258 WatchMojo.com
Cypher Review (cryptography puzzles)
 
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My review of Cypher, a cryptography puzzle game that force you to learn about the methods before you can solve the puzzles. Bring a pencil and lots of paper. Review copy provided free of charge. Buy: http://store.steampowered.com/app/746710/Cypher/?curator_clanid=26701155 Follow me on Twitter: http://twitter.com/peppage This curator thing is awesome! http://store.steampowered.com/curator/26701155/ #indiegame
Make Your Own Encryption Program
 
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***NEW PROJECT*** Mini Lunchbox Arcade -https://www.youtube.com/watch?v=h8nhqowESKg --~-- This video lays out the steps for creating a very simple encryption and decryption program using free tools. The programming language we will be using is VB Script. See if you can decrypt this text: wkjlue#vnrro#huxwxi#uxr\ You can find all the code for this program as well as an alternative for Apple computers at the project page: http://www.tinkernut.com/archives/4193
Views: 97734 Tinkernut
One Way Function - Applied Cryptography
 
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This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 9969 Udacity
Lorenz: Hitler's "Unbreakable" Cipher Machine
 
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Many people have heard of Enigma before, the code machine used by Nazi Germany to send secret coded messages. Yet, some very clever code breakers were able to break that code and read those messages! But there was another cipher machine used by the Germans in WWII called the Lorenz machine, and this machine was even more difficult than Enigma, and was used by the top level of the Nazi Party. However the code breakers at Bletchley Park broke this code too, and could read secret messages from people like Adolf Hitler himself! It was mathematician Bill Tutte who discovered the breakthrough that allowed the Lorenz code to be broken. On the 10th of September 2014 a new memorial to Bill Tutte is unveiled in his hometown of Newmarket. Have a look at the Bill Tutte Memorial website at http://billtuttememorial.org.uk/
Views: 114993 singingbanana
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: 3112 Szymon Machajewski
Shift Ciphers
 
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Encrypting and decrypting messages with the Caesar Cipher and shift ciphers.
Views: 683 Cathy Frey
How to Use the Alberti Cipher Disk device with Method 1
 
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Here we have a short discussion and an example (as derived from the product's instruction sheet) concerning how to use the new Creative Crafthouse "Alberti Cipher Disk" device with Method 1; as originally described by Leon Battista Alberti in his treatise "De Cifris" from the year 1467. Employing digraphs for missing letters when using the device with the English language are briefly mentioned (please also see the video covering advanced Method 2 for additional details and or review the enclosed product instruction sheet). Visit and join our forum at: http://www.ciphertown.com See this excellent introductory product video on this from Creative Crafthouse here: https://www.youtube.com/watch?v=bsT_0EzxvtI Product instructions in their latest corrected form can also be viewed here: https://drive.google.com/file/d/0BwMFYOuDn6QNMWdwUDBkRTZ5TmM/view?usp=sharing This product may also be purchased directly via the link below (but supplies are limited): http://www.creativecrafthouse.com/index.php?main_page=product_info&cPath=143&products_id=1033&zenid=35n99ti4ga9ipr2j92ch93pc34
Views: 3980 Ciphertown
Mining Bitcoin with pencil and paper
 
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Bitcoins are mined using a cryptographic algorithm called SHA-256. This algorithm is simple enough to be done with pencil and paper, as I show in this video. Not surprisingly, this is a thoroughly impractical way to mine. One round of the algorithm takes 16 minutes, 45 seconds which works out to a hash rate of 0.67 hashes per day. For details, see http://righto.com/sha
Views: 1179595 Ken Shirriff
Encryption - The low-tech way.
 
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Sending secret messages that GCHQ and the NSA cannot read using nothing more complex than a pen and paper.
Views: 14859 AAISPChannel
How secure is 256 bit security?
 
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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: 835696 3Blue1Brown
How To Write in Pigpen Cipher [2 MINUTE TUTORIAL]
 
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Pigpen cipher - also known as masonic cipher, Freemason's cipher, Napoleon cipher, and tic-tac-toe cipher - is a geometric substitution cipher based off of 4 grids. If you enjoyed this pigpen cipher tutorial, please do remember to subscribe - it really helps me out. Buy my artwork / check out my website here: https://www.buzzymartin.co.uk Follow me on instagram: https://www.instagram.com/buzzymartin
Views: 22679 Buzzy Martin
Cryptogram Puzzle #1  Android Quote Answer
 
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Cryptogram Puzzle #1 Answer Solved Quote Android Cryptogram puzzle level 1 Decipher the encrypted text to reveal the motivational quote! All other cryptogram levels are solved in this Youtube playlist: https://www.youtube.com/playlist?list=PLZpV6Ctc9FNfgDmVMEhGb4orHyaHfi1vW A cryptogram (or cryptoquote) is a type of puzzle that consists of a short piece of encrypted text. The cipher used to encrypt the text is a simple substitution of letters and is simple enough that the cryptogram can be solved by hand. ========================================== ► SUBSCRIBE HERE:- https://goo.gl/zRfGWB =========================================== ► FOLLOW ME ON TWITTER: https://goo.gl/bx9KBJ ► LIKE/Message ME ON FACEBOOK: https://goo.gl/rOyoY7 ► CONNECT ME ON GOOGLE+ : https://goo.gl/cdPbS7 ============================================ Download This Awesome Game By Awsome developer From Playstore: https://play.google.com/store/apps/details?id=com.pixplicity.cryptogram Cryptogram for Android has some cool features: • It works completely offline, so you can enjoy some brain teasers while traveling; • Compare statistics about how well you're doing with friends; • Keep track of which puzzles you've solved already and revisit them; • Get help by revealing letters or showing hints. Best of all, it's completely free, and free of ads! Enjoy! Cryptograms are also known as cryptoquotes or cryptoquizes. *******Better Hints At my Website******* I have just started my new website for better understanding puzzlegames and their hints. Just visit: http://www.puzzlegamemaster.com/ And find solutions to various games. thanks. Visit once and give feedback *****************************
Views: 1328 Android Legend
I Hired A Cryptographer To Expose My Deepest Secret
 
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Will Mike's secret be exposed or remain hidden? Check out more awesome videos at BuzzFeedBlue! https://bit.ly/YTbuzzfeedvideo https://bit.ly/YTbuzzfeedblue1 https://bit.ly/YTbuzzfeedviolet GET MORE BUZZFEED: https://www.buzzfeed.com https://www.buzzfeed.com/videos https://www.youtube.com/buzzfeedvideo https://www.youtube.com/boldly https://www.youtube.com/buzzfeedblue https://www.youtube.com/buzzfeedviolet https://www.youtube.com/perolike https://www.youtube.com/ladylike BuzzFeedBlue Sports, video games, Unsolved & more epic daily videos! Credits: https://www.buzzfeed.com/bfmp/videos/21362 EXTERNAL CREDITS Justin Troutman http://justintroutman.com/ + Alec Jones-Trujillo https://www.instagram.com/jonesalecjones/ MUSIC 2 Second Delay Licensed via Warner Chappell Production Music Inc. Sunset Alley Licensed via Warner Chappell Production Music Inc. Skybolt Reloaded Licensed via Warner Chappell Production Music Inc. Crossfire Licensed via Warner Chappell Production Music Inc. All Necessary Speed Licensed via Warner Chappell Production Music Inc. Epic Countdown Licensed via Warner Chappell Production Music Inc. Overtake Licensed via Warner Chappell Production Music Inc. Thunder Race Licensed via Warner Chappell Production Music Inc. Bell Ringer Licensed via Warner Chappell Production Music Inc. Hacking The System Licensed via Warner Chappell Production Music Inc. Reckless Departure Licensed via Warner Chappell Production Music Inc. Nerve Piano Licensed via Warner Chappell Production Music Inc. Ultimate Swarm Licensed via Warner Chappell Production Music Inc. Barrage Licensed via Warner Chappell Production Music Inc. Raptor Licensed via Warner Chappell Production Music Inc. Tarnished Licensed via Warner Chappell Production Music Inc. End Of Days Licensed via Warner Chappell Production Music Inc. Shock Corridor Licensed via Warner Chappell Production Music Inc. Reverse Tension Licensed via Warner Chappell Production Music Inc. Orchestral Blast Licensed via Warner Chappell Production Music Inc. Heavy Heart Licensed via Warner Chappell Production Music Inc. Suspicion Licensed via Warner Chappell Production Music Inc. Terror Streak Hit Licensed via Warner Chappell Production Music Inc. Menace Licensed via Warner Chappell Production Music Inc. Blunt Force Licensed via Warner Chappell Production Music Inc.
Views: 5962854 BuzzFeed Multiplayer
Brute-forcing Vignere Cipher | "Vinegar" TJCTF 2018
 
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Hang with our community on Discord! https://discord.gg/Kgtnfw4 If you would like to support me, please like, comment & subscribe, and check me out on Patreon: https://patreon.com/johnhammond010 PayPal: http://paypal.me/johnhammond010 Site: http://www.johnhammond.org Twitter: https://twitter.com/_johnhammond
Views: 1328 John Hammond
Stream Ciphers - Encryption/Decryption
 
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A beginner's guide to Stream Ciphers (Encryption/Decryption).
Views: 50651 Daniel Rees
Creating An Unbreakable Cipher (nearly)
 
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Creating Ciphers can be fun, but understanding how they work by using a simple example of developing a cipher is a great way to understand them. This video covers the development of a cipher algorithm and shows how to make it (nearly) unbreakable.
Bitcoin - Cryptographic hash function
 
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What cryptographic hash functions are and what properties are desired of them. More free lessons at: http://www.khanacademy.org/video?v=0WiTaBI82Mc Video by Zulfikar Ramzan. Zulfikar Ramzan is a world-leading expert in computer security and cryptography and is currently the Chief Scientist at Sourcefire. He received his Ph.D. in computer science from MIT.
Views: 218348 Khan Academy
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: 55095 Mathispower4u
Make your own kind of Encryption with PHP
 
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In this video we will learn how to create our own type of encryption, similar to MD5. Don't forget to like, favourite, comment and subscribe for more!
Views: 14391 howCode
Mass Effect Andromeda - All Glyph Puzzle Solutions & Locations (Cryptographer Trophy Guide)
 
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There are 20 Remnant Glyph Puzzle Solutions & Locations in Mass Effect Andromeda. Solving all puzzles unlocks the Cryptographer trophy or achievement. This guide shows them in chronological story order. Text & Screenshot Guide for All Glyph Puzzles: http://www.powerpyx.com/mass-effect-andromeda-glyph-puzzle-solutions-locations/ For "Cryptographer" you must solve all 20 puzzles in a single playthrough. This is HIGHLY MISSABLE! 6 out of 20 puzzles are missable because they are inside remnant vaults that cannot be revisited after completing them, or in quest areas you can't go back to. The missable ones are marked in the overview below. Most of them are located at Alien Monoliths or inside Remnant Vaults. Each vault contains at least 1 missable puzzle! If you miss a puzzle it will lock you out of the trophy. The Remnant Puzzles are similar to Sudoku. First you must locate hidden glyphs (they are always in close proximity to the puzzle). Use your scanner to follow the yellow cables from the remnant console to the glyphs and scan them. Now you must decrypt the Remnant Code by assigning the glyphs to a grid. No row or column can include repeats of the same glyph (only one glyph of each type per line). The same goes for each quadrant block (usually four quadrants divided by glowing lines). You can't have two of the same glyphs in one quadrant. Start with the lines or blocks that are only missing one glyph. This will immediately give you the last glyph for that line (whichever one is not in the line yet). Then move to the lines that are missing 2 glyphs. Piece by piece you’ll get closer to the correct combination. You can also use Remnant Decryption Keys to solve the puzzle immediately (items that are sometimes found in chests). TIMELINE (sorted by planets and quests): Planet: EOS #1 - Main Mission: A Better Beginning - 0:05 #2 - [MISSABLE] Main Mission: A Better Beginning - 1:14 #3 - Free Roam / Additional Task: Data Trail - 3:40 #4 - Free Roam / Additional Task: The Ghost of Promise - 5:38 Planet: Havarl *You can choose whether to go to Havarl or Voeld first. It doesn't matter to which planet you go first. #5 - Main Mission: Helping Havarl's Scientists - 7:01 #6 - [MISSABLE] Heleus Assignment: A Dying Planet - 7:40 #7 - Free Roam - 9:04 Planet: Voeld #8 - Allies and Relationships Quest: Peebee Secret Project - 10:51 #9 - Restoring a World - 11:17 #10 - Restoring a World - 12:10 #11 - Restoring a World - 13:14 #12 - [MISSABLE] Restoring a World - 14:36 Planet: Kadara #13 - Heleus Assignment: Healing Kadara's Heart - 15:07 #14 - [MISSABLE] Heleus Assignment: Healing Kadara's Heart - 15:56 Planet: H-047C #15 - Heleus Assignment: The Remnant Tiller - 16:37 Planet: Elaaden #16 - Heleus Assignment: Taming a Desert - 17:12 #17 - [MISSABLE] Heleus Assignment: Taming a Desert - 17:58 #18 - Heleus Assignment: Investigate the Remnant Tiller - 18:38 #19 - Free Roam / Additional Task: Cache Flow - 19:50 Planet: Khi Tasira #20 - [MISSABLE] Main Mission: The Journey to Meridian - 20:53 Mass Effect Andromeda Trophy Guide & Roadmap: http://www.powerpyx.com/mass-effect-andromeda-trophy-guide-roadmap/ SUBSCRIBE: http://www.youtube.com/subscription_center?add_user=powerpyx ~~~~~~~~~~~~~~~~~~~~~~~~~~ Follow PowerPyx: http://www.powerpyx.com http://www.youtube.com/PowerPyx http://www.facebook.com/PowerPyx http://www.twitter.com/PowerPyx ~~~~~~~~~~~~~~~~~~~~~~~~~
Views: 461974 PowerPyx
The Zodiac Ciphers - What do we know, and when do we stop trying to solve them?
 
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http://zodiackillerciphers.com This is a talk I gave at the 2015 Cryptologic History Symposium on October 22, 2015. I've been studying the Zodiac ciphers for a while now, and this presentation is a culmination of my research. The talk was part of the "Ciphers and Crime" panel moderated by FBI historian John Fox. Fellow panelists included FBI Cryptanalysis and Racketeering Records Unit chief Dan Olson and encryption technology author Klaus Schmeh. For much more information about the Zodiac Ciphers, please visit http://zodiackillerciphers.com Some bits of the audio dropped out due to technical issues with my sound recorder - apologies for the parts that are hard to understand! BONUS MATERIAL: At the end of the video, I recorded some new material on miscellaneous things I didn't have time to include in the presentation. ERRATA: At 28m59s, I say the 408 is missing a word or phrase between parts 1 and 2. But actually it is missing between parts 2 and 3.
Views: 127976 David Oranchak
Quantum Cryptography Explained
 
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This episode is brought to you by Squarespace: http://www.squarespace.com/physicsgirl With recent high-profile security decryption cases, encryption is more important than ever. Much of your browser usage and your smartphone data is encrypted. But what does that process actually entail? And when computers get smarter and faster due to advances in quantum physics, how will encryption keep up? http://physicsgirl.org/ ‪http://twitter.com/thephysicsgirl ‪http://facebook.com/thephysicsgirl ‪http://instagram.com/thephysicsgirl http://physicsgirl.org/ Help us translate our videos! http://www.youtube.com/timedtext_cs_panel?c=UC7DdEm33SyaTDtWYGO2CwdA&tab=2 Creator/Editor: Dianna Cowern Writer: Sophia Chen Animator: Kyle Norby Special thanks to Nathan Lysne Source: http://gva.noekeon.org/QCandSKD/QCand... http://physicsworld.com/cws/article/n... https://epic.org/crypto/export_contro... http://fas.org/irp/offdocs/eo_crypt_9... Music: APM and YouTube
Views: 263603 Physics Girl
How To Read Text In Binary
 
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http://tomscott.com - @tomscott - No, seriously. Here's how to read text when all you can see is a bunch of 0s and 1s. It's easier than it seems. I... I think I might have gone off the deep end a bit here.
Views: 1117533 Tom Scott
How Bitcoin mining actually works - What is the "cryptographic puzzle"?
 
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In this video I try to breakdown the "cryptographic problem" that people reference when they talk about bitcoin mining. 13uJjYF12aRVdwaiTmALx5XDfguQ9MnYtK
Views: 59006 Keifer Kif
Cryptarithmatic Problems Artificial Intelligence | Solved Example | (Eng-hindi) | #9
 
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Cryptarithmetic is a type of mathematical game consisting of a mathematical equation among unknown numbers, whose digits are represented by letters. The goal is to identify the value of each letter. In this video we learn tips and tricks to solve these verbal arithmetic problems. Cryptarithmetic is the science and art of creating and solving cryptarithms. A cryptarithm is a genre of mathematical puzzle in which the digits are replaced by letters of the alphabet or other symbols. The invention of Cryptarithmetic has been ascribed to ancient China. This art was originally known as letter arithmetic or verbal arithmetic. In India, during the Middle Ages, were developed the arithmetical restorations or "skeletons" a type of cryptarithms in which most or all of the digits have been replaced by asterisks. The word cryptarithmetic ("cryptarithmie" in French) was introduced by M. Vatriquant, writing under the pseudonym Minos, in the May 1931 issue of Sphinx, a Belgian magazine of recreational mathematics published in French from 1931 to 1939. A type of alphametic addition puzzle termed "doubly-true" was introduced in 1945 by Alan Wayne. It is made up of "number words" that, when read, also form a valid sum. Comment your valuable reviews and Subscribe WELL ACADEMY Follow us on : Facebook : https://www.facebook.com/wellacademy/ Instagram : https://instagram.com/well_academy Twitter : https://twitter.com/well_academy
Views: 102469 Well Academy
What is a trapdoor function?
 
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Modern cryptography depends on the existence of several special kinds of mathematical functions. One important kind is a trapdoor function. Trapdoor functions are somewhat similar to hash functions in that they are easy to compute but hard to invert…​ except if you know a secret piece of information. So if someone does not have the secret or key, they cannot invert the function. If they do, they can open the trapdoor and invert the function. Trapdoor functions form the basis of modern cryptographic techniques that are widely-used online. Credits: Talking: Geoffrey Challen (Assistant Professor, Computer Science and Engineering, University at Buffalo). Producing: Greg Bunyea (Undergraduate, Computer Science and Engineering, University at Buffalo). Part of the https://www.internet-class.org online internet course. A blue Systems Research Group (https://blue.cse.buffalo.edu) production.
Views: 7537 internet-class
Encrypting Algorithms
 
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The topic is extremely important for all high end exams like Infosys, Elitmus, SNAP, XAT and Maths Olympiads
Views: 66794 pankaj gandhi
Affine Cipher Encryption
 
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gcd: https://www.youtube.com/watch?feature=player_detailpage&v=WA4nP-iPYKE Decryption: http://youtu.be/XFxFPBKFVe8
Views: 21160 Theoretically
Cryptarithmethic Problems in eLitmus and Infosys | Tricks for Cryptarithmetic Questions and Answers
 
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If you are looking for a job or preparing for placements then register here to know how you can get a job - https://goo.gl/4525yu. If you got a call letter for the Infosys Referral Drive (Phase 3) which will be held on the 7th and 8th of April then register here for study material - https://faceprep11.typeform.com/to/P0jjyW For FREE mock tests based on the latest company pattern and FREE practice exercises visit - https://www.faceprep.in/aptipedia. In the quantitative aptitude section of the eLitmus pH test and Infosys Aptitude Test mathematical reasoning section, 1 or 2 questions will be on the topic Cryptarithmetic. What is cryptarithmetic? This topic involves just basic addition and subtraction, but it’s not easy to solve without practice. There will be two words which will be added or subtracted to get another word and all the alphabets of these words will be coded with a unique number. You will have to find all the unique numbers as coded and we have to answer the given question. Cryptarithmetic is easy if you understand the basics clearly and practice more problems. Subscribe to our channel for Placement Preparation videos - https://goo.gl/UdGsKr Don't forget to hit the bell icon to get notified for live classes. Like, comment and share our videos
Views: 57476 FACE Prep
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: 588979 Khan Academy
Perfect Cipher Solution - Applied Cryptography
 
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This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 2912 Udacity
8 Things You Didn’t Know About the Deep Web
 
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Mostly everyone is browsing on the internet to get information nowadays. Let's take a look at some invisible web secrets. Support our Patreon today: https://www.patreon.com/theywillkillyou Subscribe for new videos: http://goo.gl/SaufF4 Follow us on Instagram: @theywillkillyou Known as ‘The Onion Router’ from its original project name, Tor is free software that allows users to communicate on the Internet anonymously. This is achieved by directing traffic through a network of over seven thousand relays that hide the user & their location from traffic analysis & network surveillance. Much like the layers of an onion, Tor implements layered data encryption in its communication protocol. Tor’s main objective is to protect the privacy of its users & to give them the freedom of conducting confidential communication & ensuring that their Internet activities are not being monitored. The software was developed by The Tor Project, Inc, Inc, a nonprofit research & education organization founded by Nick Mathewson, Roger Dingledine & five others. The bulk of their funding came from the United States Government. The Tor Browser, which is a modified & extremely secure version of Mozilla Firefox, is the project’s flagship. For the time being, attacks against Tor fall in the realm of academic research & the software’s developers reportedly welcome any challenge. It is a form of digital currency & a payment system that people all over the world can use to make transactions over the Internet. It's also a type of cryptocurrency which means that the money exchanged can’t be linked to a real identity if the person wants to remain anonymous. Bitcoin is the first decentralized form of currency meaning that the system doesn’t have any administrators or a central repository. The user has a Bitcoin address which is an identifier composed of 26-35 alphanumeric characters & it represents the possible destination of a bitcoin payment. Sites or users need to use a global database known as the blockchain which keeps track of who has how much money at all times. The blockchain is a record of all transactions that have ever been made in the Bitcoin network that also keeps track of newly generated bitcoin. This means that all users know each other’s bitcoin value. The process of generating bitcoins is called mining. The difficulty of the problem increases based on the speed of decryption so that a single block is decrypted every ten minutes. The dark web is not the same thing as the deep web but instead only represents a small part of it. The deep web refers to any site that can’t be accessed through traditional search engines while the dark web represents a part of the deep web that has been hidden intentionally. The most famous content on the dark web can be found in the Tor Network & accessed through Tor browsers. There seems to be no limit what can be found on the dark web. Content includes numerous scams, child pornography, cannibal sites, the sexualized torture & killing of animals, porn that would be banned anywhere else or live torture rooms. Bitcoins may be used to buy anything from fake documents to illegal drugs & weapons or the services of hackers & hitmen. Named after an ancient network of trade routes, the deep web’s Silk Road was an online black market & the first modern darknet market.This means that it could only be accessed with specific configurations, authorization or software. After a development process of 6 months, the Silk Road was launched in February 2011 & it became known as a platform for selling a wide variety of illegal drugs. In October 2013, Ross William Ulbricht, the person suspected of being the Silk Road’s founder under the pseudonym ‘Dread Pirate Roberts’, was arrested by the FBI. He was charged with money laundering, & computer hacking & conspiracy to traffic narcotics & sentenced to life in prison without the possibility of parole. His net worth at the time of his arrest was estimated at $28.5 million. Transactions that took place on the Silk Road were conducted with bitcoins. Circada 3301 was the name attributed to a secret organization that on six occasions published a series of complex puzzles with the purpose of recruiting highly intelligent individuals. Even though the puzzles were posted on different platforms, it was claimed that most of the clues could be found on the deep web. The puzzles focused on steganography, cryptography & data security. Mariana’s Web is an umbrella term used in reference to what lies in the deepest part of the Internet. Some believe that Mariana’s Web is actually an artificial intelligence entity. Others claim that it’s the place where you’ll find the most horrific things available on the deep web.
Views: 170787 They will Kill You
Solving The MYSTERY BOX Cryptex Puzzle!!
 
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Today I decided to try my luck and open up the Mystery Box Cryptex Puzzle by Bad Robot and Theory 11. This beautiful box contains a mystery within a mystery! Would you open it or leave it locked forever?! Also.. Secret section at the end...Enjoy! Mystery Box: https://store.theory11.com/products/mysterybox Mystery Box Playing cards: http://amzn.to/2FJ0ice INSTAGRAM: https://www.instagram.com/chrisramsay52 TWITTER: https://www.twitter.com/chrisramsay52 LEARN A TRICK I CREATED HERE: https://sellfy.com/p/OiqQ/ LIKED A SONG I USED? GET IT HERE: http://share.epidemicsound.com/Ramsay GAMING CHANNEL: https://www.youtube.com/channel/UCxR3TcpkooMIllA2b83kGAQ/featured MY CAMERA: http://amzn.to/2D0bVtU BEST LENS FOR VLOGS: http://amzn.to/2DeNzth BIG LENS FOR B-ROLL: http://amzn.to/2ANaqcA TOP DOWN CAM: http://amzn.to/2COakmY MIC: http://amzn.to/2AKIHJQ TRIPOD: http://amzn.to/2EuP9GO Website: https://www.chris-ramsay.com IF YOU WANT TO SEND ME STUFF: Chris Ramsay CP 50011 BP. Galeries Des Monts St-Sauveur, PQ Canada J0R 1R0
Views: 2743357 Chris Ramsay
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: 436658 World Science Festival
Introduction to Cryptography - Caesar Cipher
 
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This is my short intoduction to the caesar cipher for middle to high school students. Cryptography tools and webpages can be found at http://brianveitch.com/cryptography/
Views: 10176 Brian Veitch
Affine Cipher Decryption - Known Key
 
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This video is the second Affine Cipher video. Decryption when the key is known. How to find multiplicative inverse (x^-1 mod n): https://www.youtube.com/watch?v=K5nbGbN5Trs Encryption: http://youtu.be/_E8rSP0uAIY
Views: 20246 Theoretically
Rectangular Transposition Encryption and Decryption
 
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This is the link for another method of Transposition cipher i.e. Rail Fence cipher --https://www.youtube.com/watch?v=OeAHJbBzpk4
Views: 160 VIDS GO
Cryptography
 
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Google IT Support Professional Certificate Course 6 - IT Security: Defense against the digital dark arts, Module 2 - Cryptology To get certificate subscribe at: https://www.coursera.org/specializations/google-it-support ================= The whole course playlist: Google IT Support Professional Certificate https://www.youtube.com/playlist?list=PL2jykFOD1AWZlfwMPcVKwaFrRXbqObI3U ================= IT Security https://www.youtube.com/playlist?list=PL2jykFOD1AWaEXEpyRf-Im3U8WQ962Y4B ================= https://www.facebook.com/cyberassociation/ https://scsa.ge/en/online-courses/ This six-course certificate, developed exclusively by Google, includes innovative curriculum designed to prepare you for an entry-level role in IT support. A job in IT can mean in-person or remote help desk work, either in a small business or at a global company, like Google. Whether you’ve been tinkering with IT or are completely new to the field, you’ve come to the right place. If you’re looking for a job, upon completion of the certificate, you can share your information with top employers, like Bank of America, Walmart, Sprint, GE Digital, PNC Bank, Infosys, TEKsystems, UPMC, and, of course, Google. Course 6 - IT Security: Defense against the digital dark arts About the Course This course covers a wide variety of IT security concepts, tools, and best practices. It introduces threats and attacks and the many ways they can show up. We’ll give you some background of encryption algorithms and how they’re used to safeguard data. Then, we’ll dive into the three As of information security: Authentication, authorization, and accounting. We’ll also cover network security solutions, ranging from firewalls to Wifi encryption options. The course is rounded out by putting all these elements together into a multi-layered, in-depth security architecture, followed by recommendations on how to integrate a culture of security into your organization or team. At the end of this course, you’ll understand: - how various encryption algorithms and techniques work and their benefits and limitations. - various authentication systems and types. - the difference between authentication and authorization. At the end of this course, you’ll be able to: - evaluate potential risks and recommend ways to reduce risk. - make recommendations on how best to secure a network. - help others to understand security concepts and protect themselves Who is this class for: This program is intended for beginners who are interested in developing the skills necessary to perform entry-level IT support. No pre-requisite knowledge is required. However, if you do have some familiarity with IT, you can skip through any content that you might already know and speed ahead to the graded assessments. Module 2 - Cryptology In the second module of this course, we'll learn about cryptology. We'll explore different types of encryption practices and how they work. We'll show you the most common algorithms used in cryptography and how they've evolved over time. By the end of this module, you'll understand how symmetric encryption, asymmetric encryption, and hashing work; you'll also know how to choose the most appropriate cryptographic method for a scenario you may see in the workplace. Learning Objectives • Understand the how symmetric encryption, asymmetric encryption, and hashing work. • Describe the most common algorithms of cryptography. • Choose the most appropriate cryptographic method given a scenario.
Views: 160 intrigano
Lorenz Cipher Machine - Applied Cryptography
 
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This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 7390 Udacity
Affine Cipher Part 3 - Decryption
 
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Hi guys, in this video we look at the decryption process of the affine cipher.
Views: 10997 Sam Cogan
Cryptogram
 
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Cryptogram A cryptogram is a type of puzzle that consists of a short piece of encrypted text.Generally the cipher used to encrypt the text is simple enough that the cryptogram can be solved by hand. =======Image-Copyright-Info======== License: Creative Commons Attribution 3.0 (CC BY 3.0) LicenseLink: http://creativecommons.org/licenses/by/3.0 Author-Info: Puzzler157 Image Source: https://en.wikipedia.org/wiki/File:Cryptogram-example.jpg =======Image-Copyright-Info======== -Video is targeted to blind users Attribution: Article text available under CC-BY-SA image source in video https://www.youtube.com/watch?v=Evs18SdmlYQ
Views: 4956 WikiAudio
Kasiski Attack
 
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Views: 13269 Jeff Suzuki
Cryptography Basics in hindi
 
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All about cryptography and information security which a computer graduate must know. Cryptography or cryptology is the practice and study of techniques for secure communication in the presence of third parties called adversaries. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages;[3] various aspects in information security such as data confidentiality, data integrity, authentication, and non-repudiation[4] are central to modern cryptography. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, and electrical engineering. Applications of cryptography include military communications, electronic commerce, ATM cards, and computer passwords. Cryptography prior to the modern age was effectively synonymous with encryption, the conversion of information from a readable state to apparent nonsense. The originator of an encrypted message (Alice) shared the decoding technique needed to recover the original information only with intended recipients (Bob), thereby precluding unwanted persons (Eve) from doing the same. The cryptography literature often uses Alice ("A") for the sender, Bob ("B") for the intended recipient, and Eve ("eavesdropper") for the adversary.[5] Since the development of rotor cipher machines in World War I and the advent of computers in World War II, the methods used to carry out cryptology have become increasingly complex and its application more widespread. Modern cryptography is heavily based on mathematical theory and computer science practice; cryptographic algorithms are designed around computational hardness assumptions, making such algorithms hard to break in practice by any adversary. It is theoretically possible to break such a system, but it is infeasible to do so by any known practical means. These schemes are therefore termed computationally secure; theoretical advances, e.g., improvements in integer factorization algorithms, and faster computing technology require these solutions to be continually adapted. There exist information-theoretically secure schemes that provably cannot be broken even with unlimited computing power—an example is the one-time pad—but these schemes are more difficult to implement than the best theoretically breakable but computationally secure mechanisms. The growth of cryptographic technology has raised a number of legal issues in the information age. Cryptography's potential for use as a tool for espionage and sedition has led many governments to classify it as a weapon and to limit or even prohibit its use and export.In some jurisdictions where the use of cryptography is legal, laws permit investigators to compel the disclosure of encryption keys for documents relevant to an investigation.Cryptography also plays a major role in digital rights management and copyright infringement of digital media.
Views: 1438 Gyan Gurukool
Cryptogram Puzzle #2  Android Quote Answer
 
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Cryptogram Puzzle #2 Answer Solved Quote Android Cryptogram puzzle level 2 Decipher the encrypted text to reveal the motivational quote! All other cryptogram levels are solved in this Youtube playlist: https://www.youtube.com/playlist?list=PLZpV6Ctc9FNfgDmVMEhGb4orHyaHfi1vW A cryptogram (or cryptoquote) is a type of puzzle that consists of a short piece of encrypted text. The cipher used to encrypt the text is a simple substitution of letters and is simple enough that the cryptogram can be solved by hand. ========================================== ► SUBSCRIBE HERE:- https://goo.gl/zRfGWB =========================================== ► FOLLOW ME ON TWITTER: https://goo.gl/bx9KBJ ► LIKE/Message ME ON FACEBOOK: https://goo.gl/rOyoY7 ► CONNECT ME ON GOOGLE+ : https://goo.gl/cdPbS7 ============================================ Download This Awesome Game By Awsome developer From Playstore: https://play.google.com/store/apps/details?id=com.pixplicity.cryptogram Cryptogram for Android has some cool features: • It works completely offline, so you can enjoy some brain teasers while traveling; • Compare statistics about how well you're doing with friends; • Keep track of which puzzles you've solved already and revisit them; • Get help by revealing letters or showing hints. Best of all, it's completely free, and free of ads! Enjoy! Cryptograms are also known as cryptoquotes or cryptoquizes. *******Better Hints At my Website******* I have just started my new website for better understanding puzzlegames and their hints. Just visit: http://www.puzzlegamemaster.com/ And find solutions to various games. thanks. Visit once and give feedback *****************************
Views: 471 Android Legend
Playing card ciphers - Chaocipher
 
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Video discussing how to encrypt and decrypt with John Byrne's mechanical Chaocipher from 1918 using a standard 52-card deck. More about the algorithm can be found at http://aarontoponce.org/wiki/card-ciphers
Views: 422 Aaron Toponce
Confederate Army Cipher Disk - Civil War Encryption Wheels
 
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AVAILABLE AT http://www.creativecrafthouse.com/index.php?main_page=product_info&cPath=135&products_id=970 A precision laser engraved wood version of this famous cipher which was used for the encryption of secret messages of the Confederacy during the American Civil War (1861-1865). Difficult to decrypt messages could be created with the Cipher Disk. It was originally designed by Francis LaBarre, a gold and silver worker, in Richmond, VA. and was based on the Vigenère Cipher system. Only 5 survive, 2 of which are in the Museum of the Confederacy in Richmond, VA. They were made from brass disks. Our version is 4.4” in diameter made from alder wood. The artwork and text font of the wheel is the same as the original so it has the same visual look. Detailed Instructions for use are included. This is something that can be used today to encode messages. For Civil War Reenactors I can laser engrave name, rank, regiment. Made in Florida by Creative Crafthouse
Views: 15034 dj51florida

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