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:
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✏️ Check out my blog:
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Views: 195449
Simply Explained - Savjee

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: 558181
Art of the Problem

Euclid's Algorithm Link: [Coming Soon]
in the mean time use this link: http://www.asakusuma.com/euclidean/euclidean.php
Another animated attempt of explaining the RSA cipher (public key cryptography aka asymmetric key cryptography). This tutorial includes rules of the cipher followed by an example to clear things up.
This video talks mostly about encrypting blocks size of two text and will briefly skim over the methods in encrypting larger block sizes.
This was a part of my final year project to create a learning aid. I decided to upload this so the animation won't go to waste. All feedbacks welcome.
Do note: this video is meant for people who already have basic knowledge of the RSA cipher and is a part of an application created for my dissertation.
Special thanks for Olivia Beck for creating the background image
Facebook: http://tinyurl.com/kennyplaysguitar
Twitter: https://twitter.com/kenwinlam

Views: 44322
Kenny Luminko

Discrete Mathematics Homework.
Sources:
http://omerozcan.net/rsa/
https://tr.khanacademy.org/computing/computer-science/cryptography/modern-crypt/v/intro-to-rsa-encryption
Project code link: https://yadi.sk/d/BRLDPvyt3ZfqJG

Views: 1173
Burak Parlak

This animation is made by Mr. Enrique Zabala. This is verison 4 made for CrypTool.
This video is made for students so that they can donwload it and can learn this algorithm.

Views: 13222
HowTo

Demonstration of using OpenSSL to create RSA public/private key pair, sign and encrypt messages using those keys and then decrypt and verify the received messages. Commands used: openssl. Created by Steven Gordon on 7 March 2012 at Sirindhorn International Institute of Technology, Thammasat University, Thailand.

Views: 62846
Steven Gordon

How can companies store passwords safely and keep them away from hackers? Well let's find out!
With all the data breaches lately, it's likely that the password of one of your accounts has been compromised. Hackers now might know the password you've used, but they also might not.. To understand why, we'll take a look at what methods a company can use to protect user passwords. We'll take a look at encryption, hash functions and a multilayer approach!
📚 Sources
Can be found on my website:
https://savjee.be/videos/simply-explained/hash-functions/
🌍 Social
Twitter: https://twitter.com/savjee
Facebook: https://www.facebook.com/savjee
✏️ Check out my blog
https://www.savjee.be

Views: 34833
Simply Explained - Savjee

Learn the concept of message integrity and message digest. Understand how Message Digest 5 algorithm works.

Views: 6949
DrVikasThada

Modern day encryption is performed in two different ways. Check out http://YouTube.com/ITFreeTraining or http://itfreetraining.com for more of our always free training videos. Using the same key or using a pair of keys called the public and private keys. This video looks at how these systems work and how they can be used together to perform encryption.
Download the PDF handout
http://itfreetraining.com/Handouts/Ce...
Encryption Types
Encryption is the process of scrambling data so it cannot be read without a decryption key. Encryption prevents data being read by a 3rd party if it is intercepted by a 3rd party. The two encryption methods that are used today are symmetric and public key encryption.
Symmetric Key
Symmetric key encryption uses the same key to encrypt data as decrypt data. This is generally quite fast when compared with public key encryption. In order to protect the data, the key needs to be secured. If a 3rd party was able to gain access to the key, they could decrypt any data that was encrypt with that data. For this reason, a secure channel is required to transfer the key if you need to transfer data between two points. For example, if you encrypted data on a CD and mail it to another party, the key must also be transferred to the second party so that they can decrypt the data. This is often done using e-mail or the telephone. In a lot of cases, sending the data using one method and the key using another method is enough to protect the data as an attacker would need to get both in order to decrypt the data.
Public Key Encryption
This method of encryption uses two keys. One key is used to encrypt data and the other key is used to decrypt data. The advantage of this is that the public key can be downloaded by anyone. Anyone with the public key can encrypt data that can only be decrypted using a private key. This means the public key does not need to be secured. The private key does need to be keep in a safe place. The advantage of using such a system is the private key is not required by the other party to perform encryption. Since the private key does not need to be transferred to the second party there is no risk of the private key being intercepted by a 3rd party. Public Key encryption is slower when compared with symmetric key so it is not always suitable for every application. The math used is complex but to put it simply it uses the modulus or remainder operator. For example, if you wanted to solve X mod 5 = 2, the possible solutions would be 2, 7, 12 and so on. The private key provides additional information which allows the problem to be solved easily. The math is more complex and uses much larger numbers than this but basically public and private key encryption rely on the modulus operator to work.
Combing The Two
There are two reasons you want to combine the two. The first is that often communication will be broken into two steps. Key exchange and data exchange. For key exchange, to protect the key used in data exchange it is often encrypted using public key encryption. Although slower than symmetric key encryption, this method ensures the key cannot accessed by a 3rd party while being transferred. Since the key has been transferred using a secure channel, a symmetric key can be used for data exchange. In some cases, data exchange may be done using public key encryption. If this is the case, often the data exchange will be done using a small key size to reduce the processing time.
The second reason that both may be used is when a symmetric key is used and the key needs to be provided to multiple users. For example, if you are using encryption file system (EFS) this allows multiple users to access the same file, which includes recovery users. In order to make this possible, multiple copies of the same key are stored in the file and protected from being read by encrypting it with the public key of each user that requires access.
References
"Public-key cryptography" http://en.wikipedia.org/wiki/Public-k...
"Encryption" http://en.wikipedia.org/wiki/Encryption

Views: 471382
itfreetraining

For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com.
The AES book chapter for this video is also available at the web site (click Sample Chapter).

Views: 177584
Introduction to Cryptography by Christof Paar

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
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Twitter : https://twitter.com/Engi_Mentor

Views: 103068
Skill Gurukul

Easy explanation of "public key encryption".
Instead of the usual terms of "public key" and "private key" this tutorial uses "lock" and "key".
==================================================
If you want to start protecting you email:
get free Privacy Everywhere Beta,
http://www.privacyeverywhere.net/

Views: 206089
Veet Vivarto

Today we're going over Elliptic Curve Cryptography, particularly as it pertains to the Diffie-Hellman protocol. The ECC Digital Signing Algorithm was also discussed in a separate video concerning Bitcoin's cryptography.

Views: 52339
CSBreakdown

Views: 18593
Pakapoom Changpingnga

This video lecture is produced by S. Saurabh. He is B.Tech from IIT and MS from USA.
RSA Algorithm and public key encryption | rivest shamir adleman algorithm
To study interview questions on Linked List watch http://www.youtube.com/playlist?list=PL3D11462114F778D7&feature=view_all
To prepare for programming Interview Questions on Binary Trees
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To study programming Interview questions on Stack, Queues, Arrays visit
http://www.youtube.com/playlist?list=PL65BCEDD6788C3F27&feature=view_all
To watch all Programming Interview Questions visit
http://www.youtube.com/playlist?list=PLD629C50E1A85BF84&feature=view_all
To learn about Pointers in C visit
http://www.youtube.com/playlist?list=PLC68607ACFA43C084&feature=view_all
To learn C programming from IITian S.Saurabh visit
http://www.youtube.com/playlist?list=PL3C47C530C457BACD&feature=view_all

Views: 4984
saurabhschool

Quantum computing will kill RSA Cryptography unless you feel like using 8TB public keys.
For the full episode, visit https://twit.tv/sn/618
Subscribe:
https://twit.tv/subscribe
About us:
TWiT.tv is a technology podcasting network located in the San Francisco Bay Area with the #1 ranked technology podcast This Week in Tech hosted by Leo Laporte. Every week we produce over 30 hours of content on a variety of programs including Tech News Today, The New Screen Savers, MacBreak Weekly, This Week in Google, Windows Weekly, Security Now, All About Android, and more.
Follow us:
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https://twitter.com/TWiT
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https://www.instagram.com/twit.tv/

Views: 1053
TWiT Netcast Network

Please Fill the form - https://docs.google.com/forms/d/1kOxvqvz1IvBMHJ3UeLecLDuK7ePKjHAvHaRcxduHKEE/edit
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Views: 22627
hindi tutorials darshan

AES algorithm is the Block Cipher Symmetric Algorithm
Block Size is 128 bits
Key Size is 128 bits ( 4 words or 16 Bytes )
Sub Key Size is 1 Word (32 bit)
Number of Sub keys 44 Words
Number of Rounds 10
Cipher Text Size is 128 bits

Views: 86869
Sundeep Saradhi Kanthety

AES – Advanced Encryption Standard - Structure, Encryption Process, Round Key Size Relation - Hindi
#AES Lecture in Hindi
Computer Network Security(CNS) Lectures – Internet Security

Views: 12953
Easy Engineering Classes

DES algorithm follows the Feistel Structure
Most of the Block cipher algorithms follows Feistel Structure
BLOCK SIZE - 64 bits Plain Text
No. of Rounds - 16 Rounds
Key Size - 64 bits
Sub Key Size - 48 bits
No. of Sub Keys - 16 Sub Keys
Cipher Text - 64 bits

Views: 144422
Sundeep Saradhi Kanthety

What is hash function/algorithm? What is mainly used for? What are three basic characteristics of a secure hash algorithm? In this video, I will also demonstrate how hash function works.
Playlist: Basic Cryptography
https://www.youtube.com/watch?v=vk3py9M2IfE&list=PLSNNzog5eyduN6o4e6AKFHekbH5-37BdV
Advanced Cryptography:
https://www.youtube.com/watch?v=TmA2QWSLSPg&list=PLSNNzog5eydtwsdT__t5WtRgvpfMzpTc7
Please leave comments, questions, and
Please subscribe!
Thank you very much!
Sunny Classroom

Views: 39472
Sunny Classroom

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: 992662
3Blue1Brown

RSA Algorithm is the example for Public Key Encryption algorithm.
Here we are supposed to find two keys
1) Public Key which is used at encryption
2) Private Key which is used at decryption
step 1: Select two large Primes P , Q
Step 2: Calculate n=P*Q & O(n) = (P-1)*(Q-1)
Step 3: Assume e and d (Public and Private Key).
Step 4: Encrypt the Plain Text using Public Key e.
Step 5: Decrypt the Cipher Text using Private Key d.

Views: 75132
Sundeep Saradhi Kanthety

#rsa #deffiehellman #cryptographylectures #lastmomenttuitions
Take the Full Course of Cryptography and Network Security
What we Provide
1) 20 Videos (Index is given down) + More Update will be Coming Before final exams
2)Hand made Notes with problems for your to practice
3)Strategy to Score Good Marks in Cryptography and Network Scurity
To buy the course click
https://goo.gl/mpbaK3
if you have any query email us at
[email protected]
Sample Notes : https://goo.gl/Ze1FpX
or Fill the form we will contact you
https://goo.gl/forms/2SO5NAhqFnjOiWvi2
Cryptography and System Security Index
Lecture 1 Introduction to Cryptography and Security System
Lecture 2 Security Goals and Mechanism
Lecture 3 Symmetric Cipher
Lecture 4 Substitution Cipher
Lecture 5 Transposition Cipher
Lecture 6 Stream and Block Cipher
Lecture 7 Mono Alphabetic Cipher
Lecture 8 Poly Alphabetic Cipher
Lecture 9 Diffie Hellman
Lecture 10 RSA Algorithm with Solved Example
Lecture 11 IDEA Algorithm Full Working
Lecture 12 SHA-1 Algorithm Full Working
Lecture 13 Blowfish Algorithm Full working
Lecture 14 DES Algorithm Full Working
Lecture 15 Confusion and Diffusion
Lecture 16 AES Algorithm Full working
Lecture 17 Kerberos
Lecture 18 Malicious Software ( Virus and worms )
Lecture 19 DOS and DDOS Attack
Lecture 20 Digital Signature Full working Explained
More videos Coming Soon.

Views: 268918
Last moment tuitions

ce vidéo explique les algorithmes de chiffrement et la meilleur algorithme actuellement en cadre de protéger votre réseau informatique
contact :
[email protected]

Views: 452
cours informatique globale

This video describes the two use cases of RSA asymmetric key algorithm. 1. RSA Encryption and 2. Digital signature.
Its especially intended for new comers in Cryptography to make their concept clear in how RSA can be used to secure the communication over internet.
Both of these cases can also be combined one after another to get both advantages.
Music: Alan Walker - Spectre

Views: 1227
Anum Sheraz

This video explains why key exchange is an issue in cryptography and introduces Diffie-Hellman's solution to this problem.
NB : This video was created as a part of an assignment. It is heavily influenced from another youtube video which you can find here https://www.youtube.com/watch?v=YEBfamv-_do

Views: 47598
Bishal Sapkota

AES has swept away old faithful DES, and is now the workhorse of business and government cryptography. Our entire civil order relies on its integrity. Here we explain how it works, and discover how a string of simple crypto primitives combine to such a robust cipher for which no mathematical compromise was ever published.

Views: 121693
Gideon Samid

Many years ago I came across a clickable flash animation that explained how the Rijndael cipher works. And even though Rijndael is pure, complex math, the animated visualizations made the whole process so crystal clear that I had to bend down to the floor afterwards to pick up my dropped jaw.
Since then I know how powerful animated visualizations can be, even (or rather especially) for abstract and/or complex topics.
When I started my Go blog, I knew I had to use animations because they are worth a thousand words. I did the same in my Go videos that you can find over here in my channel, and also in my Go course.
This video is a recoding of the flash animation while I click through it. The flash animation is still available at formaestudio.com (link below), but no sane browser would agree to play any flash content anymore, so a video capture is the best we can get. I hope the pace of clicking through the steps is just right for you.
NOTE: The video has no audio part. This is not a bug, the Flash animation simply had no sounds.
The Rijndael Animation (and another Flash program called Rijndael Inspector): http://www.formaestudio.com/rijndaelinspector/
(c) Enrique Zabala. License terms: "Both these programs are free of use." (I guess that publishing a video of the animation is covered by these terms.)
My blog: https://appliedgo.net
My course: https://appliedgo.com/p/mastergo

Views: 24056
AppliedGo

Take the Full Course of Cryptography and Network Security
What we Provide
1) 20 Videos (Index is given down) + More Update will be Coming Before final exams
2)Hand made Notes with problems for your to practice
3)Strategy to Score Good Marks in Cryptography and Network Scurity
To buy the course click
https://goo.gl/mpbaK3
if you have any query email us at
[email protected]
Sample Notes : https://goo.gl/Ze1FpX
or Fill the form we will contact you
https://goo.gl/forms/2SO5NAhqFnjOiWvi2
Cryptography and System Security Index
Lecture 1 Introduction to Cryptography and Security System
Lecture 2 Security Goals and Mechanism
Lecture 3 Symmetric Cipher
Lecture 4 Substitution Cipher
Lecture 5 Transposition Cipher
Lecture 6 Stream and Block Cipher
Lecture 7 Mono Alphabetic Cipher
Lecture 8 Poly Alphabetic Cipher
Lecture 9 Diffie Hellman
Lecture 10 RSA Algorithm with Solved Example
Lecture 11 IDEA Algorithm Full Working
Lecture 12 SHA-1 Algorithm Full Working
Lecture 13 Blowfish Algorithm Full working
Lecture 14 DES Algorithm Full Working
Lecture 15 Confusion and Diffusion
Lecture 16 AES Algorithm Full working
Lecture 17 Kerberos
Lecture 18 Malicious Software ( Virus and worms )
Lecture 19 DOS and DDOS Attack
Lecture 20 Digital Signature Full working Explained
More videos Coming Soon.

Views: 45617
Last moment tuitions

Views: 239519
GVSUmath

Using EA and EEA to solve inverse mod.

Views: 383329
Emily Jane

https://8gwifi.org/CipherFunctions.jsp
Reference book: http://leanpub.com/crypto
Cryptographic Algorithms generally fall into one of two different categories, or are a combination of both.
Symmetric
Fast
Only provide confidentiality
Examples: DES, AES, Blowfish, RC4, RC5
Asymmetric
Large mathematical operations make it slower than symmetric algorithms
No need for out of band key distribution (public keys are public!)
Scales better since only a single key pair needed per individual
Can provide authentication and nonrepudiation
Examples: RSA, El Gamal, ECC, Diffie-Hellman
problem with symmetric key cryptography
DES (Data Encryption Standard)
64 bit key that is effectively 56 bits in strength
Actual algorithm is called DEA (Data Encryption Algorithm)
DES Modes
Electronic Code Book
Cipher Block Chaining (most commonly used for general purpose encryption)
Cipher Feedback
Output Feedback
Counter Mode (used in IPSec)
3DES
112-bit effective key length
Uses either 2 or 3 different smaller keys in one of several modes
Modes
EEE2/3
EDE2/3
AES
NIST replaced DES in 1997 with this
Uses the Rijndael algorithm
Supports key/block sizes of 128, 192, and 256 bits
Uses 10/12/14 rounds as block size increases
IDEA (International Data Encryption Algorithm)
Operates on 64 bit blocks in 8 rounds with 128 bit key
Considered stronger than DES and is used in PGP
Blowfish
64 bit block cipher with up to 448 bit key and 16 rounds
Designed by Bruce Schneier
RC4
Stream cipher with variable key size created by Ron Rivest
RC5
Another Rivest cipher
Block cipher with 32/64/128 bit blocks and keys up to 2048 bits
RC6
Beefier version of RC5 submitted as AES candidate
CAST
64 bit block cipher with keys between 40-128 bits with 12-16 rounds depending on key length
CAST-256 used 128-bit blocks and keys from 128-256 bits using 48 rounds
SAFER (Secure and Fast Encryption Routine)
Set of patent-free algorithms in 64 and 128 bit block variants
Variation used in Bluetooth
Twofish
Adapted version of Blowfish with 128 bit blocks, 128-256 bit keys and 16 rounds
AES Finalist
Kryptografie mit symmetrischem Schlüssel
symmetric key cryptography
symmetric key cryptography tutorial
symmetric key cryptography example
symmetric key cryptography vs asymmetric key cryptography
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Kryptografie mit symmetrischem Schlüssel
Kryptographie mit symmetrischem Schlüssel
Kryptographie mit symmetrischem Schlüssel
Kryptografie mit symmetrischem Schlüssel und asymmetrische Schlüsselkryptographie
symmetrische und asymmetrische Schlüsselkryptographie
Kryptografie mit symmetrischem Schlüssel

Views: 40867
Zariga Tongy

-~-~~-~~~-~~-~-
Please watch: "PL vs FOL | Artificial Intelligence | (Eng-Hindi) | #3"
https://www.youtube.com/watch?v=GS3HKR6CV8E
-~-~~-~~~-~~-~-

Views: 94334
Well Academy

This video is part of the Udacity course "Intro to Information Security". Watch the full course at https://www.udacity.com/course/ud459

Views: 3434
Udacity

https://8gwifi.org/CipherFunctions.jsp
Reference book: http://leanpub.com/crypto
Computer Security, Cryptography Advanced Encryption Standard AES,fips 197
The Advanced Encryption Standard (AES) specifies a FIPS-approved
cryptographic algorithm that can be used to protect electronic data. The AES algorithm is a symmetric block cipher that can encrypt (encipher) and decrypt (decipher) information. Encryption converts data to an unintelligible form called ciphertext; decrypting the ciphertext converts the data back into its original form, called plaintext.
The AES algorithm is capable of using cryptographic keys of 128, 192, and 256 bits to encrypt and decrypt data in blocks of 128 bits.
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Views: 151105
Zariga Tongy

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

Views: 1885
Udacity

This video is part of the Udacity course "Intro to Information Security". Watch the full course at https://www.udacity.com/course/ud459

Views: 54963
Udacity

Update: The simulation is now freely available on Google Play https://play.google.com/store/apps/details?id=air.rc4simulation&hl=en.
Details: A presentation explaining the RC4 algorithm through animation. Coded with Flash AS3.0. The specification and required algorithms were already provided by the employer. My work in this project is on programming the interface, functioning and the required animations.

Views: 27900
Vishwas Gagrani

In this video you will learn how to solve knapsack problem in cryptography .. encrytion and decryption of any letter using ASCII value and convert them into binary .. which will make hard of any intruder to decrypt the message
Please subscribe and like video .
Thanks
Visit Our Channel :- https://www.youtube.com/channel/UCxik...
In this lecture we have taught about Knapsack Public Key Cryptography and how to solve it with example.
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Instagram :- https://www.instagram.com/ankit_soni1511

Views: 10081
Quick Trixx

https://8gwifi.org/CipherFunctions.jsp
Encryption Decryption Online https://8gwifi.org/CipherFunctions.jsp
what is DES DATA ENCRYPTION STANDARD (DES)
The Data Encryption Standard (DES) specifies two FIPS approved
cryptographic algorithms as required by FIPS 140-1. When used in conjunction with American
National Standards Institute (ANSI) X9.52 standard, this publication provides a complete description
of the mathematical algorithms for encrypting (enciphering) and decrypting (deciphering) binary
coded information. Encrypting data converts it to an unintelligible form called cipher. Decrypting
cipher converts the data back to its original form called plaintext. The algorithms described in this
standard specifies both enciphering and deciphering operations which are based on a binary number
called a key
computer security cryptography
data encryption standard animation

Views: 71479
Zariga Tongy

The complete YouTube playlist can be viewed here: https://goo.gl/mjyDev
This lesson explains Data Encryption Standard, under the course, "Cryptography and Network Security for GATE Computer Science Engineering".
Some important terminology and concepts are also illustrated, for the better understanding of the subject.
For the entire course: https://goo.gl/aTMBNZ
For more lessons by Ansha Pk: https://goo.gl/2DX9Wn
Must watch for all the GATE/ESE/PSU Exams.
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Cryptography and Network Security - Data Encryption Standard (Part1) - GATE(CSE)

Views: 8525
Unacademy - GATE Preparation

Dow does block cipher encryption work? wonder no more :)
Excel File as requested by some of you: https://www.ieofit.com/youtube/DES.xlsx

Views: 15647
Ineapple

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

Views: 6707
Udacity

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Please watch: "PL vs FOL | Artificial Intelligence | (Eng-Hindi) | #3"
https://www.youtube.com/watch?v=GS3HKR6CV8E
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Views: 97881
Well Academy

Banks, Facebook, Twitter and Google use epic numbers - based on prime factors - to keep our Internet secrets. This is RSA public-key encryption.
More links & stuff in full description below ↓↓↓
Gold Vault: https://youtu.be/CTtf5s2HFkA
This video features Dr James Grime (http://singingbanana.com/). Message from James: "Thanks to Dr Chris Hughes of the University of York who showed me how to find the RSA public key from my browser, and showed me how awesome they look when you print them out."
Regarding the keys used for encryption:
x, y prime
Encode key E shares no factors with (x-1)(y-1)
Decode key is D with E*D - 1 a multiple of (x-1)(y-1)
Thanks to Drew Mokris for the animation: http://www.spinnerdisc.com/
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Views: 1025087
Numberphile

Мэтью Тейлор, глава RSA рассуждает о Просвещении 21 века. О том, как Идея может помочь нам справиться с трудностями сегодняшнего общества и о роли небольших групп мыслящих и самоотверженных людей в этом движении.

Views: 1267
Потребление Идей