public key - New Videos
Channel: Computerphile & Total View: 375052
Add Date: July 22, 2014, 7:59 am & Duration: 00:06:20
Likes: 8540 | Dislike: 113
Spies used to meet in the park to exchange code words, now things have moved on - Robert Miles explains the principle of Public/Private Key Cryptography
note1: Yes, it should have been 'Obi Wan' not 'Obi One' :)
note2: The string of 'garbage' text in the two examples should have been different to illustrate more clearly that there are two different systems in use.
This video was filmed and edited by Sean Riley.
Computer Science at the University of Nottingham: http://bit.ly/nottscomputer
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Channel: itfreetraining & Total View: 379054
Add Date: June 18, 2013, 5:09 am & Duration: 00:06:45
Likes: 1512 | Dislike: 147
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
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 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...
Channel: Android Authority & Total View: 32477
Add Date: October 4, 2016, 6:27 am & Duration: 00:15:47
Likes: 1377 | Dislike: 24
How keys are distributed is vital to any encryption system. Find out how to do it with the Diffie–Hellman key exchange and using public-key cryptography. Find out more: https://goo.gl/qI6jxZ
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Channel: Simply Explained - Savjee & Total View: 71573
Add Date: October 30, 2017, 1:00 am & Duration: 00:04:40
Likes: 2526 | Dislike: 25
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!
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Channel: Art of the Problem & Total View: 564560
Add Date: July 30, 2012, 5:00 pm & Duration: 00:08:38
Likes: 9039 | Dislike: 86
The history behind public key cryptography & the Diffie-Hellman key exchange algorithm.
We also have a video on RSA here: https://www.youtube.com/watch?v=wXB-V_Keiu8
Channel: Franklyn [Litecoin] & Total View: 70641
Add Date: June 9, 2015, 11:20 am & Duration: 00:04:14
Likes: 629 | Dislike: 46
By now you have most probably already heard of the term Public & Private keys, but what exactly are they and more to the point what do they even do?
Note, 204 Tresvigintillion is the amount of time a standard desktop PC would take to crack a key - via Howseucreismypassword.net
Bloomberg Video: http://www.bloomberg.com/news/videos/b/9a33c478-516f-4fc9-8a11-0e9cb7c5b066)
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Channel: patrickJMT & Total View: 32588
Add Date: August 26, 2016, 4:17 pm & Duration: 00:19:13
Likes: 1013 | Dislike: 28
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In this video I show mathematically for RSA encryption works by going through an example of sending an encrypted message!
If you are interested in seeing how Euclid's algorithm would work, check out this video by Emily Jane: https://www.youtube.com/watch?v=fz1vxq5ts5I
A big thanks to the 'Making & Science team at Google' for sponsoring this video!
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Channel: SecureMetric & Total View: 58263
Add Date: July 7, 2015, 7:26 pm & Duration: 00:03:41
Likes: 386 | Dislike: 11
This video explains to you how PKI works to create a secure environment.
Channel: Nihal Acar & Total View: 75268
Add Date: December 9, 2012, 11:34 am & Duration: 00:02:18
Likes: 547 | Dislike: 65
A common craft video I made for my ITGS lesson.
Channel: Sooraj Sidhu & Total View: 22119
Add Date: October 18, 2015, 5:28 pm & Duration: 00:03:59
Likes: 70 | Dislike: 12
Topic: Explain how public key encryption can be used to secure email and other communications.
Channel: ABI International & Total View: 13282
Add Date: April 14, 2017, 3:53 am & Duration: 00:16:31
Likes: 145 | Dislike: 13
RSA Public Key Encryption Algorithm (cryptography). How & why it works.
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Channel: Rebecca Yan & Total View: 4415
Add Date: May 19, 2016, 7:05 pm & Duration: 00:05:54
Likes: 21 | Dislike: 4
Give the introduction to the basic two types of encryption, public key and private key.
Channel: Technical Guruji & Total View: 133290
Add Date: April 7, 2016, 2:08 am & Duration: 00:06:25
Likes: 4073 | Dislike: 212
Namaskaar Dosto, is video mein maine aapko encryption ke baare mein bataya hai, aap sabhi ne computer aur internet use karte time Encryption aur decryption ke baare mein jarur suna hoga, usme aapko SSL encrytpion TSL Encryption, Public Key encryption, private key encryption wagereh ke baare mein bhi suna hoga, aur abhi recently whatsapp ne bhi end to end encryption launch kiya hai, toh aise mein hamare man mein bahut se sawaal hai ki aakhir yeh encryption hota kya hai? Encryption hum hamari email pe bhi use karte hai, aur hum online banking karte time bhi encryption ka use karte hai. Mujhe umeed hai ki yeh video dekhne ke baad aap encryption aur decryption ke baare mein sab kuch jaan jayenge, aur saath hi saath public key encryption ke baare mein bhi samajh jayenge. aur aap aaraam se whatsapp ke encryption feature ko bhi use kar payenge.
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Channel: x96.in & Total View: 3236
Add Date: January 25, 2014, 9:33 am & Duration: 00:08:25
Likes: 16 | Dislike: 1
Wie man ein Schlüsselpaar erstellt, Publickey-Authentifizierung auf dem Server aktiviert und eine Verbindung mit PuTTY herstellt.
Etwas wichtiges habe ich im Video vergessen, aber dafür lohnt es nicht ein neues zu machen:
Beim Passwortverfahren wird der Hash des Passworts auf dem Server gespeichert, kann von einem Eindringling (z.B. per PHP) gelesen und dann eventuell geknackt werden. Das ist beim PubKey-Verfahren unmöglich.
Channel: Daniel Rees & Total View: 50815
Add Date: April 25, 2014, 8:56 pm & Duration: 00:09:05
Likes: 244 | Dislike: 23
Asymmetric Part 2 - RSA includes tutorial on how to encrypt and decrypt as well as calculating the keys and euclidean algorithm.
Channel: Sunny Classroom & Total View: 7868
Add Date: June 28, 2017, 8:59 am & Duration: 00:05:06
Likes: 136 | Dislike: 3
In public key encryption, two different keys are used to encrypt and decrypt data.One is the public key and other is the private key. These two keys are mathematically related. They come as a pairs.
The public key encryption is also called asymmetric key encryption because two different keys are used.
Public key algorithm is used for different purpose from private key algorithm. It is used for verification and authentication.
In this video, I will use an example to demonstrate how to use public key.
Playlist: Basic Cryptography
Please leave comments, questions and
Channel: Code.org & Total View: 160126
Add Date: August 21, 2015, 4:45 pm & Duration: 00:06:40
Likes: 1339 | Dislike: 16
Mia Epner, who works on security for a US national intelligence agency, explains how cryptography allows for the secure transfer of data online. This educational video explains 256 bit encryption, public and private keys, SSL & TLS and HTTPS.
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Channel: danscourses & Total View: 68808
Add Date: March 7, 2011, 1:23 pm & Duration: 00:05:50
Likes: 112 | Dislike: 3
A tutorial on private-public key authentication in Windows using freeSSHd, PuTTY, and PuTTYgen. 5/5 in a series on SSH and key pair authentication
Channel: Kiran Kuppa & Total View: 22484
Add Date: January 26, 2013, 3:50 am & Duration: 01:31:02
Likes: 80 | Dislike: 1
Channel: Packethacks.com & Total View: 26241
Add Date: December 9, 2016, 9:53 am & Duration: 00:18:07
Likes: 410 | Dislike: 21
+++See my latest video: Internet Security or Die+++ https://youtu.be/CzB5n6_pBfk
Learn Public Key Cryptography in just 18 Minutes - Cryptography Tutorial
In this Cryptography Tutorial, I teach you Public Key cryptography basics. Specifically I’m going to explain to you how the cryptography works, that allows you to do online shopping. We are so used to online shopping, a.k.a. e-commerce, that we take it for granted. But e-commerce would not be possible at all without public key cryptography. Not only will I explained to you the details of public-key cryptography and how that makes e-commerce possible, but I’m going to explain it in 15 minutes, and explain it without math, by using the Blackbox model.
IMHO, cryptography basics should not include math. Cryptography explained with math simply muddies the waters to those without extensive math background.
Let’s start by taking a brief look at Classic cryptography, which is been around for thousands of years. Classic cryptography is also called secret key cryptography or Symmetric cryptography.
A cipher is some sort of a mathematical algorithm that we use to scramble text. In the blackbox model the cipher itself is the blackbox into which we input plaintext and the...
Channel: MIT OpenCourseWare & Total View: 12331
Add Date: September 12, 2016, 11:13 am & Duration: 00:21:45
Likes: 95 | Dislike: 8
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
Channel: ProfChrisBishop & Total View: 134098
Add Date: June 9, 2009, 1:00 am & Duration: 00:03:29
Likes: 1103 | Dislike: 10
This clip from the 2008 Royal Institution Christmas Lectures shows a simple demonstration of how two people can agree on a secret key, even though all of their communications are carried out in public. In the electronic world, secret key exchange allows computers to communicate securely, and is used, for example, when you give your credit card information to an on-line shop.
You can watch the 2008 Royal Institution Christmas Lectures in full at: http://research.microsoft.com/~cmbishop or by visiting the Royal Institution web site.
There is a dedicated web site to accompany the 2008 Christmas Lectures, with ten interactive games as well as downloadable PDF instructions for experiments which can be conducted at home or at school: http://www.rigb.org/christmaslectures08
Channel: LiveOverflow & Total View: 25281
Add Date: April 21, 2017, 8:15 am & Duration: 00:12:42
Likes: 881 | Dislike: 7
Using the greatest common divisor (GCD) to factorize the public modulo into the secret primes, so we can forge a RSA signature.
Source for the rhme2 challenges: https://github.com/Riscure/Rhme-2016
Channel: Veet Vivarto & Total View: 189898
Add Date: September 11, 2013, 2:25 pm & Duration: 00:03:19
Likes: 1291 | Dislike: 131
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,
Channel: TechVideo Guru & Total View: 58198
Add Date: December 31, 2016, 2:25 am & Duration: 00:05:13
Likes: 352 | Dislike: 198
What Is Public Key Cryptography?
What is encryption
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Channel: Sundeep Saradhi Kanthety & Total View: 4400
Add Date: February 19, 2018, 11:46 am & Duration: 00:32:28
Likes: 61 | Dislike: 0
There are four ways to distribute the public keys among the users.
1) Public Announcement
2) Public Key Directory
3) Public Key Authority
4) Certificate Authority
Channel: Gemalto Security & Total View: 8695
Add Date: February 23, 2017, 10:23 am & Duration: 00:01:37
Likes: 27 | Dislike: 2
What is PKI (Public Key Infrastructure)?
Discover what you need to know about the level of security PKI provides, how easy it is to implement and how convenient it is for users.
Public key infrastructures (PKIs) are relied upon to secure a broad range of digital applications, validating everything from transactions and identities to supply chains. However, infrastructure vulnerabilities represent a significant risk to the organizations that rely on PKI alone to safeguard digital applications.
Gemalto offers PKI encryption key management solutions to help you protect the keys at the heart of PKI as well as PKI-based authentication tokens that leverage the security benefits offered by PKI to deliver dependable identity protection
Watch and learn how PKI can benefit you and your organization.
Our solutions: https://safenet.gemalto.com/data-protection/pki-security-solutions/
Channel: Hacks And Security & Total View: 31625
Add Date: April 19, 2017, 8:58 pm & Duration: 00:19:32
Likes: 552 | Dislike: 14
symmetric vs asymmetric ( public key ) cryptography
symmetric key vs assymetric key encryption
advantages of symmetric key cryptography
advantages of assymetric cryptography
concept of digital signatures
safe and secure communication between systems
encrypted communication between systems
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Channel: secappdev.org & Total View: 49359
Add Date: July 11, 2013, 10:52 am & Duration: 01:31:53
Likes: 130 | Dislike: 5
The function of a public key infrastructure (PKI) is to ensure secure delivery and management of public keys. Alternative trust models lead to different key architectures.
Public keys are published by means of digitally signed certificates.
A private key may be compromised, in which case the certificate containing the corresponding public key must be revoked. Many revocation methods are in current use. Publication of Certificate Revocation Lists (CRLs) and checking with an Online Certificate Status Protocol (OCSP) responder are best established.
+ learn the components of a public key infrastructure.
+ understand key delivery and management mechanisms.
A lecture by Bart Preneel at SecAppDev 2013 in Leuven, Belgium.
Professor Bart Preneel of KU Leuven heads the COSIC (COmputer Security and Industrial Cryptography) research group. His main research area is information security with a focus on cryptographic algorithms and protocols as well as their applications to both computer and network security, and mobile communications.
He teaches cryptology, network security and coding theory at the K.U.Leuven and was visiting professor at the Ruhr Universitaet Bochum (Germany), the T.U.Graz (Austria), the...
Channel: Steven Gordon & Total View: 3554
Add Date: April 23, 2016, 11:35 pm & Duration: 00:29:56
Likes: 20 | Dislike: 0
Using a public key authority to distribute public keys. Course material via: http://sandilands.info/sgordon/teaching
Channel: Matt Thomas & Total View: 9068
Add Date: September 30, 2016, 10:00 pm & Duration: 00:23:28
Likes: 136 | Dislike: 5
Before we delve into the inner workings of a bitcoin transaction I wanted to explain how the actual bitcoin address is derived from the public key which in turn is derived from the private key.
I take through step by step all the steps required to derived the checksums etc and show with a real example of a real bitcoin transaction.
Also discuss why checksums are included in Bitcoin addresses in order to eliminate the possibility of characters being corrupted, or modified in transit.
This is the cool tool for converted from base 58 encoded value to hex value.
Good link talking about base 58 encoding.
Channel: csunplugged & Total View: 31308
Add Date: October 24, 2008, 6:19 pm & Duration: 00:04:23
Likes: 53 | Dislike: 4
This video shows an entertaining way to introduce Computer Science to school students.
For the next part, see http://nz.youtube.com/watch?v=iDVH3oCTc2c
For the first part in the series, see http://nz.youtube.com/watch?v=voqghyZbZxo
The full show is available in one clip at http://nz.youtube.com/watch?v=VpDDPWVn5-Q
For more information, see http://csunplugged.org
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