This tutorial demonstrates how the euclidian algorithm can be used to find the greatest common denominator of two large numbers.
Learn Math Tutorials Bookstore http://amzn.to/1HdY8vm
Donate http://bit.ly/19AHMvX
STILL NEED MORE HELP?
Connect one-on-one with a Math Tutor. Click the link below:
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:)

Views: 322714
Learn Math Tutorials

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
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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: 810574
SciShow

A proof of Wilson's Theorem, a basic result from elementary number theory. The theorem can be strengthened into an iff result, thereby giving a test for primality. (Though in practice there are far more efficient tests.)
Subject: Elementary Number Theory
Teacher: Michael Harrison
Artist: Olga Reukova

Views: 52521
Socratica

The Euclid's algorithm is widely used to find the GCD, short for Greatest Common Factor, of numbers. It uses interesting mathematical properties of division and remainders to find the answer.
Here we prove the GCD algorithm once again to bring clarity to Euclid's method of dividing the larger number by the smaller one and setting the new parameters to the smaller and remaining number.
Check out these videos on the code for the algorithm (https://youtu.be/80pOI0_BXyk) and an exciting question (https://youtu.be/D-DYtUmRMa4)!
Code:
https://github.com/gkcs/Competitive-Programming/blob/master/src/main/java/main/java/videos/GCD.java
Codechef Problem:
https://www.codechef.com/problems/GCDQ
References:
https://brilliant.org/wiki/greatest-common-divisor/
https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/a/the-euclidean-algorithm
https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-042j-mathematics-for-computer-science-fall-2010/readings/MIT6_042JF10_chap04.pdf

Views: 1612
Gaurav Sen

In this video, I show you an example of a congruence equation that has ONE solution.

Views: 20559
Polar Pi

Once you know how to solve diophantine equations with a single variable, the next step in complexity is to consider equations with two variables. The simplest such equations are linear and take the form ax+by=c. Before we solve this equation generally, we need a preliminary result. We show that you can solve the equation ax+by=GCD(a,b) by performing the Euclidean algorithm, and then reverse-substituting to arrive at a single solution.
Subject: Elementary Number Theory
Teacher: Michael Harrison

Views: 91351
Socratica

Find the least residue (modulo p) using Fermat's Little Theorem; or find the remainder when dividing by p. We start with a simple example, so that we can easily check the answer, then look at much bigger numbers where the answers cannot be directly checked on a calculator.

Views: 217024
Maths with Jay

For this HackerRank problem, we use the Euclid's algorithm to find the GCD (Greatest Common Divisor) of two numbers. The problem is based on the scene in Die Hard 3.0, where John McClane has to solve a mathematical problem based on this to save the city!
The GCD of two given numbers is defined as the largest possible number which divides both the numbers with no remainder. The GCD of a number is also sometimes called Highest Common Factor.
We take sample test cases to see how this problem can be solved, and then move to a proof for a general case.
Make sure to check out the other two videos on the proof of the algorithm (https://youtu.be/B5HKW99AvV0) and the code (https://youtu.be/80pOI0_BXyk)!
Code:
https://github.com/gkcs/Competitive-Programming/blob/master/src/main/java/main/java/videos/GCD.java
HackerRank Problem:
https://www.hackerrank.com/challenges/die-hard-3/
References:
https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-042j-mathematics-for-computer-science-fall-2010/readings/MIT6_042JF10_chap04.pdf
https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/a/the-euclidean-algorithm
https://brilliant.org/wiki/greatest-common-divisor/

Views: 2721
Gaurav Sen

The Euclidean Algorithm is an efficient method for computing the greatest common divisor of two integers. We demonstrate the algorithm with an example.
Recommended age: 12+
Teacher: Michael Harrison
Artist: Katrina de Dios

Views: 65839
Socratica

Modular arithmetic especially the properties of congruence are an important tool in arriving at quick solutions to a variety of problems. In this video Mayank unravels this concept of Congruence starting with the basic concepts and then explaining the 5 key properties of Congruence (≡):
a+c ≡ (b+d)mod N (Remainder of Sums ≡ Sum of Remainders)
a-c ≡ (b-d)mod N (Remainder of Difference ≡ Difference of Remainders)
ac ≡ (bd)mod N (Remainder of Products ≡ Products of Remainders)
a^e ≡ b^e mod N (Remainder of Exponent ≡ Exponent of Remainders)
a/e ≡ b/e (mod N/gcd(N,e)) (However, don’t do division without writing basic equation
Mayank applies these concepts to arrive at quick solutions for 7 representative problems - reducing seemingly impossible math involving large numbers to mere seconds.
Some example problems from the video:
Find the remainder 6^(6^(6^6 ) )/7
Find the last digit of (17)^16
There are 44 boxes of chocolates with 113 chocolates in each box. If you sell the chocolates by dozens, how many will be leftover?
More Motivations – Reducing Big Number @0:08
Why Bother? – Shortcuts to Several Problems @1:10
Face of a Clock @2:05
Face of a Clock Replace 12 with 0 – Module 12 @4:38
What Happens with 7 Days? @6:20
Running the Clock Backwards @8:37
Addition and Subtraction of Congruence’s @10:54
Application of Addition – Example-1 @14:30
Multiplication in Congruence’s @18:46
Application of Multiplication – Example -2/3 @22:15
Exponentiation in Congruence’s @26:08
Application of Exponentiation Example -4/5 @27:58
Division of Congruence’s: Never Divide, Think from Basics @33:37
Combining Congruence’s @38:43
Example – 6 @40:36
Concept of Multiplicative Inverse @48:33
Summary @49:30
Next – Faster Solutions to Exponent Problems @51:05
#Inverse #Exponentiation #Dozens #Subtraction #Happen #Congruence #Arithmetic #Reducing #Motivations #Delayed #Mayank #Examrace

Views: 51277
Examrace

A solution to a typical exam question. See my other videos
https://www.youtube.com/channel/UCmtelDcX6c-xSTyX6btx0Cw/.

Views: 289980
Randell Heyman

Fundamental Theorem of Arithmetic and Proof. Building Block of further mathematics. Very important theorem in number theory and mathematics.

Views: 19830
ritvikmath

How to solve 17x ≡ 3 (mod 29) using Euclid's Algorithm. If you want to see how Bézout's Identity works, see https://www.youtube.com/watch?v=9PRPr6J_btM

Views: 195194
Maths with Jay

Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in

Views: 49467
nptelhrd

Content Link: https://github.com/mostafa-saad/ArabicCompetitiveProgramming/raw/master/04%20Math/09_Number_Theory_Extended_Euclidean_algorithm.pdf
Content:
- Extended Euclidean algorithm
- Bézout's identity
Problems: UVA(718, 11768, 10104, 10090, 10633, 10673), SRM358-D1-2

Views: 2465
Arabic Competitive Programming

Using EA and EEA to solve inverse mod.

Views: 394013
Emily Jane

tell me if any problems or errors as usual

Views: 25271
Matt B

MIT 6.042J Mathematics for Computer Science, Spring 2015
View the complete course: http://ocw.mit.edu/6-042JS15
Instructor: Albert R. Meyer
License: Creative Commons BY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu

Views: 67424
MIT OpenCourseWare

Views: 83009
GVSUmath

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Password Encryption.java
JAVA ENCRYPTION/DECRYPTION PROGRAM HELP
Encrypting and Decrypting Java
Cryptography using Java in Netbeans IDE
Cryptography using Java in Netbeans IDE
Java Cryptography APIs
Cryptography
Encrypting and Decrypting a text file in java

Views: 101554
ProgrammingKnowledge

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/donateinfi
Classical computers struggle to crack modern encryption. But quantum computers using Shor’s Algorithm make short work of RSA cryptography. Find out how.
Tweet at us! @pbsinfinite
Facebook: facebook.com/pbsinfinite series
Email us! pbsinfiniteseries [at] gmail [dot] com
Previous Episode
How to Break Cryptography
https://www.youtube.com/watch?v=12Q3Mrh03Gk
The Mathematics Behind Quantum Computers
https://www.youtube.com/watch?v=IrbJYsep45E
Additional Resources:
Scott Aaronson's Blog (Great Intro to Shor's Alg.):: http://www.scottaaronson.com/blog/?p=208
Shor's Original Paper:: https://arxiv.org/abs/quant-ph/9508027v2
Lectures on Shor's Algorithm:: https://arxiv.org/pdf/quant-ph/0010034.pdf
Decrypting secure messages often involves attempting to find the factors that make up extremely large numbers. This process is too time consuming for classical computers but Shor’s Algorithm shows us how Quantum Computers can greatly expedite the process.
Written and Hosted by Kelsey Houston-Edwards
Produced by Rusty Ward
Graphics by Ray Lux
Made by Kornhaber Brown (www.kornhaberbrown.com)
Thanks to Spiros Michalakis for helpful discussions and feedback.
Comments answered by Kelsey:
Neon Bull
https://www.youtube.com/watch?v=12Q3Mrh03Gk&lc=z135uxf5cxenutmxj04cc3swkvm4tpcrxik
Bhargav R
https://www.youtube.com/watch?v=12Q3Mrh03Gk&lc=z13qjjioozbjdrqyz04cevdrtu3ti3y5sq40k
BobC
https://www.youtube.com/watch?v=12Q3Mrh03Gk&lc=z12pjpzastylzz2qx04cjtc5jrq2y3yhmlk0k

Views: 179318
PBS Infinite Series

This video presents a recent breakthrough called the Sparse Fourier Transform (SFT). This algorithm yields an exponential speed-up over the celebrated Fast Fourier Transform (FFT) when asked to extract a small number of dominant Fourier coefficients. The video features Assistant Professor Michael Kapralov of the IC School at EPFL.
http://theory.epfl.ch/kapralov/
Hassanieh, Indyk, Katabi and Price (2012). Nearly Optimal Sparse Fourier Transfo
https://arxiv.org/pdf/1201.2501.pdf
Piotre Indyk and MIchael Kapralov (2014). Sample-Optimal Fourier Sampling in Any Constant Dimension
http://theory.epfl.ch/kapralov/papers/ft-hd-part1.pdf

Views: 8655
ZettaBytes, EPFL

If you can parallelize your code by harnessing the power of the GPU, I bow to you. GPU code is usually abstracted away by by the popular deep learning frameworks, but knowing how it works is really useful. CUDA is the most popular of the GPU frameworks so we're going to add two arrays together, then optimize that process using it. I love CUDA!
Code for this video:
https://github.com/llSourcell/An_Introduction_to_GPU_Programming
Alberto's Winning Code:
https://github.com/alberduris/SirajsCodingChallenges/tree/master/Stock%20Market%20Prediction
Hutauf's runner-up code:
https://github.com/hutauf/Stock_Market_Prediction
Please Subscribe! And like. And comment. That's what keeps me going.
Follow me:
Twitter: https://twitter.com/sirajraval
Facebook: https://www.facebook.com/sirajology
More learning resources:
http://supercomputingblog.com/cuda-tutorials/
http://www.nvidia.com/docs/IO/116711/sc11-cuda-c-basics.pdf
https://devblogs.nvidia.com/parallelforall/even-easier-introduction-cuda/
https://developer.nvidia.com/cuda-education-training
https://llpanorama.wordpress.com/cuda-tutorial/
https://www.udacity.com/course/intro-to-parallel-programming--cs344
http://lorenabarba.com/gpuatbu/Program_files/Cruz_gpuComputing09.pdf
http://cuda-programming.blogspot.nl/p/tutorial.html
https://www.cc.gatech.edu/~vetter/keeneland/tutorial-2011-04-14/02-cuda-overview.pdf
Join us in the Wizards Slack channel:
http://wizards.herokuapp.com/
No, Nvidia did not pay me to make this video lol. I just love CUDA.
And please support me on Patreon:
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Views: 183848
Siraj Raval

The of and to. A in is I. That it, for you, was with on. As have ... but be they.
RELATED LINKS AND SOURCES BELOW!
http://www.twitter.com/tweetsauce
http://www.instagram.com/electricpants
WordCount.org http://www.wordcount.org/
How many days have you been alive? http://www.beatcanvas.com/daysalive.asp
random letter generator: http://www.dave-reed.com/Nifty/randSeq.html
Dictionary of Obscure Sorrows: https://www.youtube.com/user/obscuresorrows
Word frequency resources:
[lemmatized] https://en.wikipedia.org/wiki/Most_common_words_in_English
http://www.uow.edu.au/~dlee/corpora.htm
http://www.wordfrequency.info
http://www.anc.org/data/anc-second-release/frequency-data/
http://www.titania.bham.ac.uk/docs/
http://www.kilgarriff.co.uk/bnc-readme.html#raw
https://en.wiktionary.org/wiki/Wiktionary:Frequency_lists
http://ucrel.lancs.ac.uk/bncfreq/
[PDF] http://www.wordfrequency.info/files/entries.pdf
[combined Wikipedia and Gutenberg] http://www.monlp.com/2012/04/16/calculating-word-and-n-gram-statistics-from-a-wikipedia-corpora/
http://corpus.byu.edu/coca/files/100k_samples.txt
http://corpus.byu.edu/
http://corpus.leeds.ac.uk/list.html
https://books.google.co.uk/books?id=ja1_AAAAQBAJ&dq=word+frequency+coca&lr=
http://www.ling.helsinki.fi/kit/2009s/clt231/NLTK/book/ch01-LanguageProcessingAndPython.html
Great Zipf's law papers:
http://colala.bcs.rochester.edu/papers/piantadosi2014zipfs.pdf
http://www.ling.upenn.edu/~ycharles/sign708.pdf
http://arxiv.org/pdf/cond-mat/0412004.pdf
http://www-personal.umich.edu/~mejn/courses/2006/cmplxsys899/powerlaws.pdf
Zipf’s law articles and discussions:
http://www.theatlantic.com/magazine/archive/2002/04/seeing-around-corners/302471/
http://io9.com/the-mysterious-law-that-governs-the-size-of-your-city-1479244159?utm_expid=66866090-48.Ej9760cOTJCPS_Bq4mjoww.0
https://plus.maths.org/content/os/latestnews/may-aug08/food/index
http://judson.blogs.nytimes.com/2009/05/19/math-and-the-city/?em
https://plus.maths.org/content/mystery-zipf?src=aop
http://www.datasciencecentral.com/profiles/blogs/why-zipf-s-law-explains-so-many-big-data-and-physics-phenomenons
https://en.wikipedia.org/wiki/Zipf%27s_law
https://books.google.co.uk/books?id=f8GrzlnMSm8C&pg=PA62&redir_esc=y#v=onepage&q&f=false
http://arxiv.org/pdf/0802.4393v1.pdf
http://www.pnas.org/content/108/9/3526.full
http://lewisdartnell.com/language_page.htm
http://wugology.com/zipfs-law/
other Zipf’s law PDFs
http://ftp.iza.org/dp3928.pdf
http://arxiv.org/pdf/1402.2965.pdf
http://arxiv.org/pdf/1104.3199.pdf
http://www.lel.ed.ac.uk/~jim/zipfjrh.pdf
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2834740/#pone.0009411-Mandelbrot1
http://polymer.bu.edu/hes/articles/pgs02a.pdf
in untranslated language: http://arxiv.org/pdf/0808.2904.pdf
http://pages.stern.nyu.edu/~xgabaix/papers/zipf.pdf
http://www.hpl.hp.com/research/idl/papers/ranking/ranking.html
http://statweb.stanford.edu/~owen/courses/306a/ZipfAndGutenberg.pdf
http://arxiv.org/pdf/1310.0448v3.pdf
http://www.kornai.com/Papers/glotto5.pdf
Zipf’s law slides:
http://www.slideshare.net/guest9fc47a/nlp-new-words
Pareto Principle and related ‘laws’:
http://www.squawkpoint.com/2013/03/pareto-principle/
http://billyshall.com/blog/post/paretos-principle
https://en.wikipedia.org/wiki/Pareto_principle
Random typing and Zipf:
http://www.longtail.com/the_long_tail/2006/09/is_zipfs_law_ju.html
health 80/20: http://archive.ahrq.gov/research/findings/factsheets/costs/expriach/expriach1.html
Principle of least effort:
https://en.wikipedia.org/wiki/Principle_of_least_effort
https://en.wikipedia.org/wiki/Satisficing
http://www.pnas.org/content/100/3/788.full.pdf [PDF]
http://csiss.org/classics/content/99
self organized criticality:
http://journal.frontiersin.org/article/10.3389/fnsys.2014.00166/full
Hapax Legomenon:
http://campus.albion.edu/english/2011/02/15/hapax-legomenon/
http://www.dailywritingtips.com/is-that-a-hapax-legomenon/
https://en.wikipedia.org/wiki/Hapax_legomenon
[PDF] http://www.aclweb.org/anthology/J10-4003
http://www.wired.com/2012/01/hapax-legomena-and-zipfs-law/
http://oed.hertford.ox.ac.uk/main/content/view/402/450/index.html#_ftn1
http://oed.hertford.ox.ac.uk/main/content/view/36/166/index.html
Learning curve: https://en.wikipedia.org/wiki/Learning_curve
Forgetting curve:
http://www.trainingindustry.com/wiki/entries/forgetting-curve.aspx
https://en.wikipedia.org/wiki/Forgetting_curve
Experience curve effects: https://en.wikipedia.org/wiki/Experience_curve_effects
Forgetting
and zipf's law: http://act-r.psy.cmu.edu/wordpress/wp-content/uploads/2012/12/37JRA_LS_PS_1991.pdf
http://public.psych.iastate.edu/shacarp/Wixted_Carpenter_2007.pdf
http://marshalljonesjr.com/youll-remember-less-than-001-of-your-life/
https://en.wikipedia.org/wiki/Forgetting
https://www.reddit.com/r/Showerthoughts/comments/3gu9qk/it_only_takes_three_generations_for_you_to_be/
music from:
http://www.youtube.com/jakechudnow
http://www.audionetwork.com

Views: 13613374
Vsauce

Link to My Blog:- http://techdjdey.blogspot.in/
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Views: 2358
Dhrubajyoti Dey

B.K. TUTORIALS SOLUTION OF CONGRUENCE EQUATION

Views: 28485
B.K. TUTORIALS

How do you secure messages over the internet? How do quantum computers break it? How do you fix it? Why don't you watch the video to find out? Why does this description have so many questions? Why are you still reading? What is the meaning of life?
Facebook: https://www.facebook.com/frameofessence
Twitter: https://twitter.com/frameofessence
YouTube: https://www.youtube.com/user/frameofessence
CLARIFICATIONS:
You don't actually need a quantum computer to do quantum-safe encryption. As briefly mentioned at 7:04 , there are encryption schemes that can be run on regular computers that can't be broken by quantum computers.
CORRECTIONS:
[2:18] Technically, you can use any key to encrypt or decrypt whatever you want. But there's a specific way to use them that's useful, which is what's shown in the video.
[5:36] In RSA, depending on exactly what you mean by "private key", neither key is actually derivable from the other. When they are created, they are generated together from a common base (not just the public key from the private key). But typically, the file that stores the "private key" actually contains a bit more information than just the private key. For example, in PKCS #1 RSA private key format ( https://tools.ietf.org/html/rfc3447#appendix-A.1.2 ), the file technically contains the entire public key too. So in short, you technically can't get the public key from the private key or vice versa, but the file that contains the private key can hold more than just the private key alone, making it possible to retrieve the public key from it.
Video links:
Encryption and HUGE numbers - Numberphile
https://youtu.be/M7kEpw1tn50
The No Cloning Theorem - minutephysics
https://youtu.be/owPC60Ue0BE
Quantum Entanglement & Spooky Action at a Distance - Veritasium
https://youtu.be/ZuvK-od647c
Sources:
Quantum Computing for Computer Scientists
http://books.google.ca/books/about/Quantum_Computing_for_Computer_Scientist.html?id=eTT0FsHA5DAC
Random person talking about Quantum MITM attacks
http://crypto.stackexchange.com/questions/2719/is-quantum-key-distribution-safe-against-mitm-attacks-too
The Ekert Protocol (i.e. E91)
http://www.ux1.eiu.edu/~nilic/Nina's-article.pdf
Annealing vs. Universal Quantum Computers
https://medium.com/quantum-bits/what-s-the-difference-between-quantum-annealing-and-universal-gate-quantum-computers-c5e5099175a1
Images, Documents, and Screenshots:
Post-Quantum Cryptography initiatives
http://csrc.nist.gov/groups/ST/post-quantum-crypto/cfp-announce-dec2016.html
http://pqcrypto.eu.org/docs/initial-recommendations.pdf
Internet map (Carna Botnet)
http://census2012.sourceforge.net/
Quantum network maps
https://www.slideshare.net/ADVAOpticalNetworking/how-to-quantumsecure-optical-networks
http://www.secoqc.net/html/press/pressmedia.html
IBM Quantum
http://research.ibm.com/ibm-q/
Music:
YouTube audio library:
Blue Skies
Incompetech:
Jay Jay
Pamgaea
The House of Leaves
Premium Beat:
Cutting Edge Technology
Second Time Around
Swoosh 1 sound effect came from here:
http://soundbible.com/682-Swoosh-1.html
...and is under this license:
https://creativecommons.org/licenses/sampling+/1.0/

Views: 666816
Frame of Essence

This video lecture is produced by IITian S.Saurabh. He is B.Tech from IIT and MS from USA.
How will you find if a number is prime. Can you suggest a randomized algorithm to find if a number is prime.
This channel is an ultimate guide to prepare for job interviews for software engineers, software test engineers, computer scientists, engineering students specially computer science and IT engineers, Master of computer application (MCA) and Bachelor of Computer Application (BCA) students. The content of this channel will help students prepare for C,C++, Java, data structures and algorithms. It also covers courses related to networking and database. This channel can be used by students of NIIT, IGNOU etc too.
tags: "find repeated element", "randomized algorithms","randomized algorithms example","randomized algorithms ppt", "randomized algorithms pdf","repeated element in an array","primality testing fermat","primality testing fermat's little theoram","fermat's theoram primality testing","primality testing using fermat's little theoram"

Views: 14587
saurabhschool

This talk discards hand-wavy pop-science metaphors and answers a simple question: from a computer science perspective, how can a quantum computer outperform a classical computer? Attendees will learn the following:
- Representing computation with basic linear algebra (matrices and vectors)
- The computational workings of qbits, superposition, and quantum logic gates
- Solving the Deutsch oracle problem: the simplest problem where a quantum computer outperforms classical methods
- Bonus topics: quantum entanglement and teleportation
The talk concludes with a live demonstration of quantum entanglement on a real-world quantum computer, and a demo of the Deutsch oracle problem implemented in Q# with the Microsoft Quantum Development Kit. This talk assumes no prerequisite knowledge, although comfort with basic linear algebra (matrices, vectors, matrix multiplication) will ease understanding.
See more at https://www.microsoft.com/en-us/research/video/quantum-computing-computer-scientists/

Views: 170661
Microsoft Research

Learn how to program a password cracker in python. This is purely theoretical, this will not help you get back into your Facebook or gmail account.
GITHUB: https://github.com/zackscriven/password
How Secure is your password? - Vsauce
https://www.youtube.com/watch?v=U_nHZ3YGT3w&list=PLEC0A5E71DE1EDFCE&index=25
Encryption and HUGE Numbers - Numberphile
https://www.youtube.com/watch?v=M7kEpw1tn50
Thanks for Watching!
Follow me on Social media!
LinkedIn | http://zscriv.com/LinkedIn
Instagram | http://zscriv.com/Instagram
Twitter | https://zscriv.com/Twitter

Views: 80257
Zack Scriven Media

Welcome to GPG School. A full featured tutorial on how to use GPG messaging to secure your communications.
This lesson covers using GPG by the command line.
Lecture notes:
http://www.mediafire.com/download/5mwxg35xyxufbnx/Lesson_7_-_Command_Line_GPG.pdf
List of commands:
http://pastebin.com/ybzfv5cs
Other Links:
Linux manual page of gpg2: man gpg2
https://www.gnupg.org/documentation/guides.html

Views: 3720
GPG School

GET THE NEXT COURSE HERE: https://www.udemy.com/computational-thinking-in-python/?couponCode=90_OFF
Its called Computational Thinking in Python
Python program files and PDF manuals available FREE! at: http://techxellent.courses/p/python-fundamentals
SOCIAL:
MINDS: https://www.minds.com/SanjinDedic
Facebook Page: https://www.facebook.com/RobotixAu/
LinkedIn: https://au.linkedin.com/in/sanjin-dedic-a028b9113
WEBSITES:
Techxellent.com.au
Robotix.com.au
COURSE DESCRIPTION:
What is Python and why is it important?
Python is an interpreted text based general purpose programming language, which is a key requisite of the 7-10 Digital Technologies Curriculum. Python is also the only professional programming language that was designed with beginners in mind, it is intuitive and easy to use
What are the student outcomes?
Students learn about core concepts of programming: branching, iteration and functions. They apply these to create four applications which perform the following:
Simulation of an intelligent conversation
User Authentication using passwords and/or secret questions
A game where user guesses a number and the program informs the user of his accuracy over time
A program that encrypts and decrypts messages using the Caesar Cypher
What is the educational approach of the course?
The course explicitly teaches the concepts such as loops or functions, performing several examples in the interactive shell. Then these concepts are employed to create a computer program these programs progress in their level of difficulty, eventually performing complex tasks like encryption Beyond the concepts and applications students will also learn the following skills:
Creating algorithms which can be represented in the form of flowcharts, which are in turn easy to translate to code.
Building programs in separate stages each of which can be tested
Getting insight and understanding from error messages
-~-~~-~~~-~~-~-
Latest and Best Arduino Playlist in Collaboratio with DFRobot:
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Views: 672
Robotix

One must be really brave to talk about a C-only language feature on a C++ conference, especially when the feature is considered as a parody to some well established, very successful C++ ones. Of course, I'm not that brave. This lecture will firstly introduce C11 generic selection expression to people who are not familiar with it, then primarily focus on the possible uses of such a feature in C++, see how it helps C++ generic programming and meta programming (!!), and compare it to some future C++ language additions.
Slides: https://github.com/boostcon/cppnow_presentations_2015/raw/master/files/Fun-with-C11-generic-selection-expression.pdf

Views: 789
BoostCon

The session will present design and implementation of Hspark. A library that implements a framework to enable running a distributed map-reduce job over a set of nodes. The session will also showcase an extensible DSL to specify distributed map-reduce job.
The session will focus mainly on
Creation of DSL (Specification) for map reduce. The DSL is similar (actually based on) Apache Spark
Translation of DSL into scheduling the jobs across the nodes, and
Executing and handling failures.
Current implementation of hspark is at https://github.com/yogeshsajanikar/hspark and implements first two points mentioned above. Currently, I am trying to enforce it with separation of execution framework so that failures can be handled correctly.
Note that this project was implemented as a part of course project for CS240H at Stanford. The implementation details can be found at http://www.scs.stanford.edu/16wi-cs240h/projects/sajanikar.pdf
More details: https://confengine.com/functional-conf-2016/proposal/2365
Conference: http://functionalconf.com/

Views: 326
ConfEngine

THESIS WORK OMN MATLAB| THESIS IN CHANDIGARH| M TECH THESIS| PHD THESIS IN CHANDIGARH https://thesisworkchd.files.wordpress.com/2018/01/hh.pdf
This is my third lecture on Variables.
THESIS WORK ON MATLAB
We provide thesis assistance and guidance in Chandigarh with full thesis help and readymade M.Tech thesis writing in MATLAB with full documentation in Chandigarh , Delhi, Haryana, Punjab, Jalandhar, Mohali, Panchkula, Ludiana, Amritsar and nearby area’s M.Tech. students by providing a platform for knowledge sharing between our expert team. Some of the important areas in which we provide thesis assistance presently have been listed below:
BIOMEDICAL BASED PROJECTS:
1. AUTOMATIC DETECTION OF GLAUCOMA IN FUNDUS IMAGES.
2. DETECTION OF BRAIN TUMOR USING MATLAB
3. LUNG CANCER DIAGNOSIS MODEL USING BNI.
4. ELECTROCARDIOGRAM (ECG) SIMULATIONN USNG MATLAB
FACE RECOGNITION:
5. FACE DETECTION USING GABOR FEATURE EXTRACTION & NEURAL NETWORK
6. FACE RECOGNITION HISTOGRAM PROCESSED GUI
7. FACE RECOGNITION USING KEKRE TRANSFORM
FINGERPRINT RECOGNITION:
8. MINUTIAE BASED FINGERPRINT RECOGNITION.
9. FINGERPRINT RECOGNITION USING NEURAL NETWORK
RECOGNITION/ EXTRACTION/ SEGMENTATION/WATERMARKING:
10. ENGLISH CHARACTER RECOGNITION USING NEURAL NETWORK
11. NUMBER RECOGNITION USING IMAGE PROCESSING
12. CHECK NUMBER READER USING IMAGE PROCESSING
13. DETECTION OF COLOUR OF VEHICLES.
14. SEGMENTATION & EXTRACTION OF IMAGES, TEXTS, NUMBERS, OBJECTS.
15. SHAPE RECOGNITION USING MATLAB IN THE CONTEXT OF IMAGE PROCESSING
16. RETINAL BLOOD VESSEL EXTRACTION USING MATLAB
17. RECONGITION AND LOCATING A TARGET FROM A GIVEN IMAGE.
18. PHASE BASED TEMPLATE MATCHING
19. A DETECTION OF COLOUR FROM AN INPUT IMAGE
20. CAESAR CIPHER ENCRYPTION-DECRIPTION
21. IMAGE SEGMENTATION - MULTISCALE ENERGY-BASED LEVEL SETS
22. THE IMAGE MEASUREMENT TOOL USING MATLAB
23. A DIGITAL VIDEO WATERMARKING TECHNIQUE BASED ON IDENTICAL FRAME EXTRACTION IN 3-LEVEL DWT (ALSO FOR 5-LEVEL DWT)
25. RELATED TO STEGANOGRAPHY AND CRYPTOGRAPHY
26. RELATED TO THE ALL TYPES OF WATERMARKING TECHNIQUES
A. TEXT WATERMARKING
B. IMAGE WATERMARKING
C. VIDEO WATERMARKING
D. COMBINATION OF TEXT AND IMAGE WITH KEY
27. OFFLINE SIGNATURE RECOGNITION USING NEURAL NETWORKS APPROACH
28. FRUIT RECOGNITAION RELATED PROJECTS
29. VESSEL SEGMENTATION AND TRACKING
30. PROPOSED SYSTEM FOR DATA HIDING USING CRYPTOGRAPHY AND STEGANOGRAPHY
31. BASED ON IMAGE COMPRESSION ALGORITHM USING DIFFERENT TECHNIQUES
32. GRAYSCALE IMAGE DIGITAL WATERMARKING TECHNOLOGY BASED ON WAVELET ANALYSIS
33. CONTENT-BASED IMAGE RETRIEVAL
34. IMAGE PROCESSING BASED INTELLIGENT TRAFFIC CONTROLLER
35. MORPHOLOGY APPROACH IN IMAGE PROCESSING
And many more……….. http://www.thesisworkchd.com/

Views: 93
Pushpraj Kaushik

Recursion in C
Watch:https://youtu.be/K_JQRdHgjX8
________________________________________
Tutorial Switch Case in C++
Watch: https://www.youtube.com/watch?v=Kk9N5vTp3nQ
_________________________________________
Recursion Explained
https://www.youtube.com/watch?v=erjpiK_tgHw
__________________________________________
Twitter:https://twitter.com/gmohiuddin0090
Facebook:https://www.facebook.com/ghulammohiud...
Fb Page: https://www.facebook.com/Introduction...
Youtube:https://www.youtube.com/channel/UCsKe...
____________________________________________
This Video explains Recursion Function in C Language, which is nothing but a function calls itself is called "Recursion Function".
________________________________________________
In this tutorial we'll understand the concept of recursion in C through a very simple program. We'll generate a program to compute the factorial of a number through recursion.
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______________________________________________
Programming Tutorial Recursion , recursion in computer science,
Recursion in C++.........................

Views: 1523
Computer Programming Teacher

This is the code for the Euclid's Algorithm to find the GCD (Greatest Common Divisor) of two numbers. The code is written in Java. There are three variations shown here:
1) Recursive GCD
2) Iterative GCD
3) Binary GCD
The GCD of two given numbers is defined as the largest possible number which divides both the numbers with no remainder. The GCD of a number is also sometimes called Highest Common Factor.
Do check out the other two videos on the proof of the algorithm (https://youtu.be/B5HKW99AvV0) and an exciting question (https://youtu.be/D-DYtUmRMa4)!
Code:
https://github.com/gkcs/Competitive-Programming/blob/master/src/main/java/main/java/videos/GCD.java
Codechef Problem:
https://www.codechef.com/problems/GCDQ
References:
https://brilliant.org/wiki/greatest-common-divisor/
https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/a/the-euclidean-algorithm
https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-042j-mathematics-for-computer-science-fall-2010/readings/MIT6_042JF10_chap04.pdf

Views: 3195
Gaurav Sen

This video is the first video that clearly shows how to find the greatest common divisor (gcd) of two numbers using the Euclidean Algorithm. I think the examples were explained well. Please let me know your thoughts. Enjoy!!!
www.modular-arithmetic.appspot.com
www.samuelchukwuemeka.com
Correction: Please note in 2:30 - Nonnegative integers include zero; Positive integers does not include zero. I said it the other way round. I am sorry.
www.samuelchukwuemeka.com

Views: 18392
Samuel Chukwuemeka

Understand AES algorithm, the easy way using MS Excel.
Download "AESKeys.xlsx" from the http://netzts.in/card-reconciliation-downloads/cryptography-blog-downloads/
Download "NIST.FIPS.197.pdf" from https://csrc.nist.gov/publications/fips listed under number 197
Watch our 5 part DES Algorithm videos from the links given below:
1. DES Algorithm Part-1 preliminaries of Encryption : https://www.youtube.com/watch?v=JT91GJs1cjA
2. DES Algorithm - Part 2 - The KEYs : https://www.youtube.com/watch?v=mn5y93zxMs0
3. DES Algorithm - Part 3 – Encryption : https://www.youtube.com/watch?v=Lzi6W1XGKeA
4. DES Algorithm - Part 4 – Decryption : https://www.youtube.com/watch?v=Bj47jX1i4-M
5. DES Algorithm - Part 5 - 3DES : https://www.youtube.com/watch?v=CvpuGr5kERQ

Views: 3416
Nandakumar Ramakrishnan

Addition Modulo Numerical
Watch More Videos at:
https://www.tutorialspoint.com/videotutorials/index.htm
Lecture By: Er. Ridhi Arora, Tutorials Point India Private Limited

Views: 10251
Tutorials Point (India) Pvt. Ltd.

There are two important theorems that make the job of understanding powers in modular arithmetic much simpler. These go back to Fermat and Euler. We apply these to the nice problem of deciding z mod 13. Fermat's result helps us understand powers to a prime modulus. Euler's result relies on understanding the interesting Euler phi function, and is a generalization of Fermat's. As usual we like to illustrate theorems with explicit examples.
Screenshot PDFs for my videos are available at the website http://wildegg.com. These give you a concise overview of the contents of each lecture. Great for review, study and summary.
A screenshot PDF which includes MathFoundations184 to 212 can be found at my WildEgg website here: http://www.wildegg.com/store/p105/product-Math-Foundations-C2-screenshots-pdf

Views: 7171
njwildberger

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: 272453
Physics Girl

Learn How to calculate a power b modulus n i.e (a ^ b mod n) using Fast exponential modular arithmetic technique!!
Follow us on : http://aptitudefordummies.wordpress.com
Follow us in Fb : https://www.facebook.com/aptitudedummies
Google+ : [email protected]

Views: 92622
Aptitude for dummies

We do a question on the Euclidean Algorithm and then tackle a proof about GCDs.
LIKE AND SHARE THE VIDEO IF IT HELPED!
Visit our website: http://bit.ly/1zBPlvm
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Hello, welcome to TheTrevTutor. I'm here to help you learn your college courses in an easy, efficient manner. If you like what you see, feel free to subscribe and follow me for updates. If you have any questions, leave them below. I try to answer as many questions as possible. If something isn't quite clear or needs more explanation, I can easily make additional videos to satisfy your need for knowledge and understanding.

Views: 12091
TheTrevTutor

Check out these famous uncracked codes that still exist! From secret riddles to unsolved mysteries, this top 10 list contains cryptography that's still unexplained today!
Subscribe For New Videos! http://goo.gl/UIzLeB
Watch our "Most CRAZY Things Ancient Egyptians Did!" video here: https://youtu.be/T0zERiMJFQo
Watch our "Most CRAZY Things Ancient Greeks Did!" video here: https://youtu.be/-JkhVvn_dow
Watch our "REAL Evidence That Aliens EXIST!" video here: https://youtu.be/dtwJT2eilx0
10. Chinese Gold Bar Cipher
In 1933, General Wang in Shanghai, China, allegedly received seven gold bars. These gold bars appear to represent metal certificates related to a bank deposit with a U.S. Bank. The gold bars themselves have pictures, Chinese writing, some form of script writing, and cryptograms in Latin letters.
Not surprisingly, experts debate concerning the validity of the claim for the deposit. It may help to resolve the dispute if someone can decipher the cryptograms on the bars. Someone translated the Chinese writing, which discusses a transaction in excess of $300,000,000. It also refers to these gold bars, which weigh a total of 1.8 kilograms. The rest remains a mystery.
9. D’agapeyeff Cipher
The D’Agapeyeff cipher is an as-yet unbroken cipher that appears in the first edition of Codes and Ciphers, an elementary book on cryptography published by the Russian-born English cartographer Alexander D’Agapeyeff in 1939. Offered as a “challenge cipher” at the end of the book, it was not included in later editions. D’Agapeyeff supposedly admitted later to having forgotten how he had encrypted it.
Some argue that the failure of all attempts at decryption is due to D’Agapeyeff incorrectly encrypting the original text. However, it has also been argued that the cipher may still be successfully attacked using computational methods such as genetic algorithms. Whatever those are.
8. The Beale Ciphers
If this next one isn’t a hoax then the person who solves it could become very, very rich.
This question of authenticity has bothered cryptoanalysts ever since these ciphers first appeared in an 1885 pamphlet called The Beale Papers, which recounts a fantastic story of buried treasure. According to the pamphlet, a man named Thomas Jefferson Beale, a man no one has proven even existed, discovered gold during an 1816 expedition into the American West. The treasure, as the story goes, was then transported to Bedford County, Virginia, and buried.
The gold's secret location was allegedly provided by three cryptograms, of which one was already cracked. Unfortunately, the cracked code only detailed the type of treasure there and not a specific location.
To find out anything more specific would involve cracking the two other ciphers. The problem is that figuring it out requires comparing them to unknown historical texts. The decrypted cipher, for example, used the Declaration of Independence. The first number, 115, corresponds with the first letter of the 115th word in the Declaration: "instituted." That means 115 stands for "I." So what are the translation texts for the other two ciphers? No one knows, and they may very well not exist at all. There are also questions over whether the other ciphers may just be unintelligible, as if the whole thing was made up by the pamphlet's author decades after the gold was supposed to have been discovered.
7. Dorabella
In 1897, a 40-year-old composer named Edward Elgar sent an encrypted letter to 23-year-old Dora Penny, the stepdaughter of one of his friends. Why he sent it is part of the mystery and can only be answered if anyone ever cracks the code.
To figure it out would involve deciphering 87 characters all made of strings of semi-circles oriented in different directions. Attempts at translating the cipher yielded a message just short of gibberish. Experts say that shorter ciphers are always harder to solve.
Another theory has it that the code is an example of a distinct private language shared only between Penny and Elgar. If that's the case, then solving it may be simply impossible, since no one but them would understand the references.
In 2016, a police officer in Cleveland believes he’s cracked at least part of the code, revealing a line of melody. Inspector Mark Pitt read 100 books on the Dorabella Cipher; he hopes to write one on his discoveries. Whether or not that’s really the meaning, though, remains to be seen.
Origins Explained is the place to be to find all the answers to your questions, from mysterious events and unsolved mysteries to everything there is to know about the world and its amazing animals!

Views: 1247925
Origins Explained