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Search results โ€œDefine hash function in cryptographyโ€
Cryptographic Hash functions - how your passwords and other credentials are stored in databases
 
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Lesson 3 of cryptography series (to see all video check cryptography playlist - link given below). cryptography playlist : https://www.youtube.com/watch?v=_Yw7QWbk9Vs&list=PLf8bMP4RWebLVGpUnhji9Olkj1jdXfzFd Subscribe to our new youtube channel also : https://www.youtube.com/channel/UCNx1Gkyy9LfOxDMbcOKuV4g cryptographic hash functions - storing data in databases securely this video includes : what are hash functions , what is the use of hash functions , how confidential information like passwords are stored in databases , why do we use hash functions , properties or features of hash functions , what is an ideal hash etc I have used md5 hash an an example though md5 as per me is one of worst hashes but for learning point of view its best hash as per me . like my page on facebook : https://www.facebook.com/guidetohacking/ #cryptography #hash #function
Views: 50043 Hacks And Security
21. Cryptography: Hash Functions
 
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MIT 6.046J Design and Analysis of Algorithms, Spring 2015 View the complete course: http://ocw.mit.edu/6-046JS15 Instructor: Srinivas Devadas In this lecture, Professor Devadas covers the basics of cryptography, including desirable properties of cryptographic functions, and their applications to security. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 66857 MIT OpenCourseWare
Hashing Techniques Hash Function, Types of Hashing Techniques in Hindi and English
 
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Hashing Techniques Hash Function, Types of Hashing Techniques in Hindi and English * Direct Hashing * Modulo-Division Hashing * Mid-Square Hashing * Folding Hashing - Fold-Shift Hashing and Fold Boundary Hashing * PseudoRandom Hashing * Subtraction Hashing For Students of B.Tech, B.E, MCA, BCA, B.Sc., M.Sc., Courses - As Per IP University Syllabus and Other Engineering Courses
Views: 199183 Easy Engineering Classes
What is Hashing? Hash Functions Explained Simply
 
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What is hashing? In this video we explain how hash functions work in an easy to digest way. Hashing is the process of converting an input of any length into a fixed size string of text, using a mathematical function. ๐Ÿ‘ฉโ€๐ŸŽ“๐Ÿ‘จโ€๐ŸŽ“Learn blockchain fast at the Lisk Academy: https://lisk.io/academy Thanks for watching! Lisk makes it easy for developers to build and deploy blockchain applications in JavaScript. Learn about the leading platform for world-changing dapps at https://lisk.io/products. ๐Ÿ—žRead our latest news on the Lisk Blog: https://blog.lisk.io/ ๐Ÿ’ผ Check our current job openings! https://angel.co/lisk ๐Ÿ‘š๐Ÿ‘• Lisk t-shirts now available: https://merch.lisk.io/ ๐Ÿ‘ฉโ€๐Ÿš€๐Ÿ‘จโ€๐Ÿš€ Meet the team: https://lisk.io/team ๐Ÿ”’ Store your LSK in our official wallet: https://lisk.io/hub/index.html#/ ๐Ÿ”Ž View our blockchain explorer: https://explorer.lisk.io/ ๐ŸŽฅ For media inquiries, please email us at press [at] lisk [dot] io. ๐Ÿ‘ซJoin our community channels: Reddit: http://reddit.com/r/lisk Twitter: http://twitter.com/liskhq Telegram: https://t.me/Lisk_HQ Lisk.chat: https://lisk.chat/ Instagram: http://instagram.com/liskhq Facebook: http://facebook.com/liskhq LinkedIn: https://www.linkedin.com/company/lisk/ ๐Ÿ‘จโ€๐Ÿ’ป๐Ÿ‘ฉโ€๐Ÿ’ป For developers: GitHub: https://github.com/LiskHQ Gitter: https://gitter.im/LiskHQ/lisk Documentation: https://lisk.io/documentation
Views: 8010 Lisk
Encryption and Hashing explanation and differences in 5 minutes
 
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A very basic level and almost non technical explanation of the terms encryption and hashing
Views: 1097 Imran Hossain
IOTA tutorial 8: Cryptographic sponge construction
 
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If you like this video and want to support me, go this page for my donation crypto addresses: https://www.youtube.com/c/mobilefish/about This is part 8 of the IOTA tutorial. In this video series different topics will be explained which will help you to understand IOTA. It is recommended to watch each video sequentially as I may refer to certain IOTA topics explained earlier. In 2007, the sponge construction was introduced by Guido Bertoni and others. A sponge construction or sponge function takes input bit data of any length (message) and produce an output bit data of any desired length (hash digest). Simply said, the data is "absorbed" into the sponge, then the result is "squeezed" out.ย  The sponge function has two phases, the absorbing phase in which the message is compressed iteratively followed by the squeezing phase in which the hash digest is extracted in a iterative manner. A sponge function has three components: A state memory (S) which is divided into two sections: one of size r (the bitrate) and the other of size c (the capacity). For simplicity sake in this video the capacity will be complete ignored. A compression function (f) of fixed length that transforms the state memory. IOTA uses the Keccak-384 hash algorithm as its compression function. Please note this Keccak-384 hash algorithm does not comply with the standardised SHA3-384 as defined by the National Institute of Standards and Technology (NIST). A padding function (pad) which appends enough bits to the input data (M) so that the length of the padded input is a whole multiple of the bitrate r. The padded input can thus be broken into r-bit blocks. The sponge function operates as follows, starting with the absorbing phase: The state memory S is initialised to zero. The padded input is broken into r-bit blocks and called M0, M1, M2, etc. The r-bit block is XORed with the first message block M0 and the result is passed to the compression function f. The function stores its result in the state memory S. The updated r-bit block is XORed with the second message block M1 and the result is passed to function f. Again function f stores its result in the state memory S. The process is repeated until all message blocks M0, M1, M2 etc. are used up. The sponge function squeezing phase, to create the hash digest is as follows: The r-bit block of the state memory is the first r bits of output (Z0). If more output bits are desired the r-bit block is passed to function f. Function f stores its result in the state memory S. The r-bit block of the state memory is the next r bits of output (Z1). The process is repeated until the desired number of output bits are produced. The concatenated values Z0, Z1, Z2, etc, forms the hash digest. If the output length is not a multiple of r bits, it will be truncated. More information about the sponge construction: https://keccak.team/sponge_duplex.html Check out all my other IOTA tutorial videos: https://goo.gl/aNHf1y Subscribe to my YouTube channel: https://goo.gl/61NFzK The presentation used in this video tutorial can be found at: https://www.mobilefish.com/developer/iota/iota_quickguide_tutorial.html #mobilefish #howto #iota
Views: 3153 Mobilefish.com
What is a HashTable Data Structure - Introduction to Hash Tables , Part 0
 
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This tutorial is an introduction to hash tables. A hash table is a data structure that is used to implement an associative array. This video explains some of the basic concepts regarding hash tables, and also discusses one method (chaining) that can be used to avoid collisions. Wan't to learn C++? I highly recommend this book http://amzn.to/1PftaSt Donate http://bit.ly/17vCDFx
Views: 744999 Paul Programming
Hashing
 
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Hashing Watch More Videos at: https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Arnab Chakraborty, Tutorials Point India Private Limited.
Practical uses for Cryptographic Hash Functions
 
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In this video I define what a Cryptographic Hash Function is and show you how to defend against one attack vector using the Cryptographic Hash Values against unauthorized changes to system critical files.
Views: 637 Carlos Villegas
Module 5: What is hashing?
 
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Hash: The output of a one-way algorithm (can't go back and reverse it). A mathematically derived numerical representation of some input. References: Kim, D., & Solomon, M. (2014). Cryptography. In Fundamentals of information systems security, second edition (2nd ed., p. 328). Burlington, MA: Jones & Bartlett Learning.
Views: 20073 Simple Security
Passwords & hash functions (Simply Explained)
 
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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! ๐Ÿ“š Sources Can be found on my website: https://savjee.be/videos/simply-explained/hash-functions/ ๐ŸŒ Social Twitter: https://twitter.com/savjee Facebook: https://www.facebook.com/savjee โœ๏ธ Check out my blog https://www.savjee.be
C/C++ Cryptography โ€” Simple Hashing Algorithm | Simple Hash Function
 
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โ€ข Support me on Patreon: http://www.patreon.com/Zer0Mem0ry โ€ข Donate Bitcoin: 1JhSKGgRQmir8rRF4Sm5CP4fDDofKFAypd โ€ข Facebook: https://www.facebook.com/Zer0Mem0ry โ€ข Twitter: https://www.twitter.com/Zer0Mem0ry
Views: 8342 Zer0Mem0ry
DEF CON 25 Crypto and Privacy Village - David Wong - SHA 3 vs The World
 
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Since Keccak has been selected as the winner of the SHA-3 competition in 2012, a myriad of different hash functions have been trending. From BLAKE2 to KangarooTwelve we'll cover what hash functions are out there, what is being used, and what you should use. Extending hash functions, weโ€™ll also discover STROBE, a symmetric protocol framework derived from SHA-3.
Views: 2359 DEFCONConference
Blockchain Basics Explained - Hashes with Mining and Merkle trees
 
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A brief and simple introduction to the hash function and how blockchain solutions use it for proof of work (mining) and data integrity (Merkle Trees).
Views: 207312 Chainthat
SabioResearch Cryptography Hash Function
 
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You can learn scientific data analysis online at http://research.sabioacademy.com This video is just a quick overview, made for those who already took Sabio Academy courses. You will also understand everything and create the code yourself after you take our courses. Ask your questions here: http://link.sabio.tv/SabioResearch Subscribe to our updates (including unpublished videos) http://SabioAcademy.com/newsletter
Views: 791 SabioResearch
Parallel Computation of Cryptographic Hash Functions
 
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This talk by Prasad Rao is an exploration of some work in progress that resulted from an attempt to answer these questions: 1) How to arrive at a multicore reference implementation of the Sakura tree hash mode? 2) How to enable communication of "shape" between the entity that computes a cryptographic tree hash with the verifier of this hash? 3) How well does this reference implementation scale w.r.t. the number of cores, sizes of inputs, and variety of shapes? 4) How to do all this without becoming an expert on C++ parallel programming? This talk is introductory and self-contained. All that is required of the audience is willingness and ability to read Haskell code. Code: https://gist.github.com/raoprasadv/f9... Meetup Link: http://www.meetup.com/NY-Haskell/even... New York Haskell Meetup, September 23, 2015
Hash function Meaning
 
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Video shows what hash function means. an algorithm that generates a numeric, or fixed-size character output from a variable-sized piece of text or other data; used in database table queries, cryptography and in error-checking. Hash function Meaning. How to pronounce, definition audio dictionary. How to say hash function. Powered by MaryTTS, Wiktionary
Views: 462 SDictionary
Hashing Algorithms and Security - Computerphile
 
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Audible free book: http://www.audible.com/computerphile Hashing Algorithms are used to ensure file authenticity, but how secure are they and why do they keep changing? Tom Scott hashes it out. More from Tom Scott: http://www.youtube.com/user/enyay and https://twitter.com/tomscott http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Pigeon Sound Effects courtesy of http://www.freesfx.co.uk/ Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels
Views: 725753 Computerphile
Cryptographic Hash Functions
 
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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: 12468 nptelhrd
Cryptographic Hash Functions (Calle)
 
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A talk on cryptographic hash functions based around questions like: What are hash functions? How are they implemented? What makes some of them cryptographic? And the the slidedeck if you're interested: https://github.com/calleerlandsson/hash-functions-talk
Views: 467 thoughtbot
Hash Tables and Hash Functions
 
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This video describes the fundamental principles of the hash table data structure which allows for very fast insertion and retrieval of data. It covers commonly used hash algorithms for numeric and alphanumeric keys and summarises the objectives of a good hash function. Collision resolution is described, including open addressing techniques such as linear and quadratic probing, and closed addressing techniques such as chaining with a linked list.
Views: 121293 Kevin Drumm
SHA-2 Cryptographic Hash Function
 
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For clearer illustrations, a .ppsx file (ppt slide show with narration) can be accessed at https://www.dropbox.com/s/j7k4c5nm3zgezp2/ppsxABU_SHA2_Presentation.ppsx
Views: 15525 Patricia Angela Abu
Good Hash Function - (Even Distribution | Easy Computation) Hashing
 
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This video lecture is produced by S. Saurabh. He is B.Tech from IIT and MS from USA. In this lecture you will learn about how to design good hash function. What are the qualities of good hash function It should be evenly distributed It should be easy to compute 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 http://www.youtube.com/playlist?list=PLC3855D81E15BC990&feature=view_all 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: 124996 saurabhschool
Hashing and Hash table in data structure and algorithm
 
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This video lecture is produced by S. Saurabh. He is B.Tech from IIT and MS from USA. hashing in data structure hash table hash function hashing in dbms 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 http://www.youtube.com/playlist?list=PLC3855D81E15BC990&feature=view_all 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: 311148 saurabhschool
Collision in Hashing: Introduction
 
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SHA: Secure Hashing Algorithm - Computerphile
 
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Secure Hashing Algorithm (SHA1) explained. Dr Mike Pound explains how files are used to generate seemingly random hash strings. EXTRA BITS: https://youtu.be/f8ZP_1K2Y-U Tom Scott on Hash Algorithms: https://youtu.be/b4b8ktEV4Bg http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 423626 Computerphile
Playing with Hashing 01: Intro to Hash Functions
 
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Hash functions are a fun cryptographic concept which map arbitrarily long data into a fixed-length space. In most cases, they are collision-resistant and non-reversible. In this video, I talk about hash functions, their definition, and give examples of hash function output using Python. I also demo a small program which compares hash vs byte comparison for files. Wikipedia Article on Hash Functions: https://en.wikipedia.org/wiki/Hash_function An excellent (advanced) writeup on Hash Functions: https://cseweb.ucsd.edu/~mihir/cse207/w-hash.pdf The sample program I created: https://gist.github.com/brandonio21/30fe3c81a6e763c9aaba047e70a78ebf
Tricks to hack hashed passwords
 
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As we know, hash function/algorithm is used to generate digest/checksum of data. Hash function is not reversible. However, it can be hacked, and it is easy. In this video, I will use some websites to crack hashed passwords manually. You can see how easy to hack hashed passwords if hackers use powerful computer or clusters of computers to hack our passwords. They would crack millions every second. Do not assume your passwords are safe as long as they are hashed into non-reversible digests. 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 to my channel Many thanks, Sunny Classroom
Views: 9139 Sunny Classroom
Digital Signature - Asymmetric Key , Why used for Authentication & Non Repudiation (Hindi)
 
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Digital Signature - Asymmetric Key Cryptography, Why used for Authentication and Non Repudiation (Hindi) Keywords: Digital Signature Asymmetric Encryption Authentication Non Repudiation
What is Brute Force Attack? How it's done? | [Hindi]
 
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Video Title: What is Brute Force Attack? How it's done? | [Hindi] In this video i will tell you what is brute force attack and how it's done. We will see in detail how it works. we will also discuss what is dictionary attack and how its different from brute force attack. Everything explained in Hindi. Extra info: In cryptography, a brute-force attack consists of an attacker trying many passwords or passphrases with the hope of eventually guessing correctly. The attacker systematically checks all possible passwords and passphrases until the correct one is found. Alternatively, the attacker can attempt to guess the key which is typically created from the password using a key derivation function. This is known as an exhaustive key search. A brute-force attack is a cryptanalytic attack that can, in theory, be used to attempt to decrypt any encrypted data (except for data encrypted in an information-theoretically secure manner). Such an attack might be used when it is not possible to take advantage of other weaknesses in an encryption system (if any exist) that would make the task easier. When password guessing, this method is very fast when used to check all short passwords, but for longer passwords other methods such as the dictionary attack are used because a brute-force search takes too long. Longer passwords, passphrases and keys have more possible values, making them exponentially more difficult to crack than shorter ones. Brute-force attacks can be made less effective by obfuscating the data to be encoded making it more difficult for an attacker to recognize when the code has been cracked or by making the attacker do more work to test each guess. One of the measures of the strength of an encryption system is how long it would theoretically take an attacker to mount a successful brute-force attack against it. Brute-force attacks are an application of brute-force search, the general problem-solving technique of enumerating all candidates and checking each one. ----------------------------------------- Like our Facebook page: https://www.facebook.com/DesiScientistReal/ Follow us on Twitter: https://twitter.com/DS_Asli
Views: 7489 Desi Scientist
PHP Security: Password hashing
 
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Want more? Explore the library at https://www.codecourse.com/lessons Official site https://www.codecourse.com Twitter https://twitter.com/teamcodecourse
Views: 31452 Codecourse
How to salt and pepper passwords?
 
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How to salt your passwords? How to add "pepper" to salted passwords? What is the difference between salt and pepper? This video would define the salt and pepper techniques and how they work. 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! Sunny Classroom
Views: 6197 Sunny Classroom
CERIAS Security: Recent Attacks on MD5 1/6
 
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Clip 1/6 Speaker: John Black ยท University of Colorado at Boulder Cryptology is typically defined as cryptography (the construction of cryptographic algorithms) and cryptanalysis (attacks on these algorithms). Both are important, but the latter is more fun. Cryptographic hash functions are one of the core building blocks within both security protocols and other application domains. In the last few decades a wealth of these functions have been developed, but the two in most widespread usage are MD5 and SHA1. Recently, there has been a great deal of activity regarding the cryptanalysis of MD5. We survey the recent attacks on the MD5 hash function from the modest progress in the mid 90s to the startling recent results instigated by Xiaoyun Wang. We will look at the details of these attacks, some recent improvements, two applications, and discuss the current outlook on cryptographic hashing. For more information go to the Cerias website (http://bit.ly/dsFCBF)
Views: 892 Christiaan008
Cryptography Introduction to collision resistance
 
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Cryptography Introduction to collision resistance
Views: 1486 intrigano
Symmetric Key and Public Key Encryption
 
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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: 449403 itfreetraining
Applied Cryptography: Introduction to One-Way Functions - Part 1
 
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This video gives a motivation and a general idea about the concept of "One-Way Function" in Cryptography. The concept of function is defined and some examples are given.
Views: 2290 Leandro Junes
Asymmetric encryption - Simply explained
 
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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! ๐Ÿฆ Follow me on Twitter: https://twitter.com/savjee โœ๏ธ Check out my blog: https://www.savjee.be ๐Ÿ‘๐Ÿป Like my Facebook page: https://www.facebook.com/savjee
Hashing | Set 1 (Introduction) | GeeksforGeeks
 
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Explanation for the article: http://quiz.geeksforgeeks.org/hashing-set-1-introduction/ This video is contributed by Illuminati.
Views: 135468 GeeksforGeeks
[Hindi] What is Cryptography ? | Kya hai cryptography ? | Explained in simple words
 
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Hello Dosto Aaj hum baat karenge cryptography ke bare me ki ye kya hota hai aur iska itemaal kaise aur kaha hota hai. iska sambandh kisi bhi data ya message ko safely pohchane se hota hai aur uski security badhayi jati hai taaki bich me koi an-adhikarik tarike se usko access na kar paye. aasha karta hoo apko ye video pasand ayegi agar aapko ye video achhi lage to isse like kare aur apne dosto ke sath share kare aur abhi tak aapne mera channel subscribe nahi kia hai to jarur is channel ko subscribe kare. Subscribe to my channel for more videos like this and to support my efforts. Thanks and Love #TechnicalSagar LIKE | COMMENT | SHARE | SUBSCRIBE ---------------------------------------------------------------------------------- For all updates : SUBSCRIBE Us on Technical Sagar : www.youtube.com/technicalsagarindia LIKE us on Facebook https://www.facebook.com/technicalsagarindia Follow us on Twitter : http://www.twitter.com/iamasagar
Views: 83846 Technical Sagar
ITSA LECTURE 3 (DIGITAL SIGNATURE ,HASH FUNCTION ,MESSEGE DIGEST DEFINED)
 
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ITSA LECTURE 3 (DIGITAL SIGNATURE ,HASH FUNCTION ,MESSEGE DIGEST DEFINED)
Views: 1559 LectureDekho.com
Cryptography | Hashing Algorithm | Salt | Pepper | WordPress | Security
 
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Cryptography | Hashing Algorithm | Salt | Pepper | WordPress | Security | Where does WordPress store salt | How is password saved in WordPress Database | Rainbow Table | Brute-force Attack | Encrypting | Dictionary Attack | Hashing Algorithm | WordPress hashing | cryptography tutorial | cryptography lecture
Views: 25 Imran Sayed
NOTACON 2: Recent Attacks Against Hash Functions
 
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Speaker: Matthew Fanto In recent months, a large amount of research into the security of cryptographic hash functions has revealed serious flaws in every widely used hash function, including MD4, MD5, RIPEMD, HAVAL, SHA-0, and SHA-1. These flaws have far reaching consequences, as hash functions are used everywhere, from storing passwords to determining the integrity of system binaries and packages (md5sum, for example). Due to nature of these attacks, some environments are now very vulnerable, whereas other environments are unaffected. This talk will cover the state of hash function cryptanalysis, future directions of hash function design, as well as how non-cryptographers can evaluate future results to judge their impact on specific environments. For more information visit: http://bit.ly/NOTACON_2005_information To download the video visit: http://bit.ly/NOTACON_2005_videos
Views: 789 Christiaan008
Cryptographic Hash Functions (Contd...1)
 
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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: 7610 nptelhrd
Identity 101: Passwords, Hashing and Encoding
 
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When working with passwords, many times people in the industry use the terms encryption, passwords, hashing and encoding interchangeably--but in reality, they are quite different. There's a time and a place to use each. In this video I'm going to define these 3 terms, provide you use examples of each, and explain how you can utilize password storage to ensure your company's data remains safe.
Views: 912 Identropy
Public Key Cryptography: RSA Encryption Algorithm
 
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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: 532357 Art of the Problem
Password Hashing, Salts, Peppers | Explained!
 
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Views: 53661 Seytonic
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: 866067 3Blue1Brown
MAC (message authentication code ) in cryptography network system
 
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MAC (message authentication code ) in cryptography network system in hindi full explanation .
Views: 4393 Ky support

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