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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: 479860 itfreetraining
Symmetric vs. Asymmetric Encryption - CompTIA Security+ SY0-401: 6.1
 
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Security+ Training Course Index: http://professormesser.link/sy0401 Professor Messer’s Course Notes: http://professormesser.link/sy0401cn Frequently Asked Questions: http://professormesser.link/faq - - - - - Our encryption methods will generally use either symmetric encryption or asymmetric encryption, and sometimes both! In this video, you’ll learn the advantages and disadvantages when using symmetric or asymmetric encryption types. - - - - - Download entire video course: http://professormesser.link/401adyt Get the course on MP3 audio: http://professormesser.link/401vdyt Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 65036 Professor Messer
DES encrypt and decrypt
 
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DES encrypt and decrypt
Views: 61 Mahmoud Maarouf
DES Bit-wise Complement Chosen Plaintext Attack
 
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Key Search Space for Chosen Plaintext Attack exploiting the bit-wise complement property-weakness of DES
Views: 3635 Natarajan Meghanathan
DES Algorithm (Data Encryption Standard algorithm) | Complete Working | Types - Double & Triple DES
 
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In this network security video tutorial we will study the DES algorithm in cryptography. DES also known as Data Encryption Standard algorithm is one of the most famous and widely studied algorithm and is very important to study especially if you are a Computer Science or Information Technology student. We will also study and understand the variations of DES that is the Types of DES. Types of DES - 1. Double DES 2. Triple DES 2.1 Triple DES with 3 Keys 2.2 Triple DES with 2 Keys Data Encryption Standard Algorithm(DES) - 1. The Data Encryption Standard (DES) was developed in the 1970s by the National Bureau of Standards (NBS)with the help of the National Security Agency (NSA). 2. DES is a block cipher. It encrypts data in block size of 64 bits each. 3. It produces 64 bit of cipher text 4. Same algorithm and key are used for encryption and decryption. 5. The key length is 56 bits. The key originally consists of 64 bits; however, only 56 of these are actually used by the algorithm. Eight bits are used solely for checking parity, and are thereafter discarded. Hence the effective key length is 56 bits. 6. Consists of 16 steps, each of which is called as a round. Each round performs the steps of substitution and transposition DES is Based on two fundamental attributes: 1. Substitution - also called as confusion 2. Transposition - also called as diffusion Complete Network Security / Information Security Playlist - https://www.youtube.com/watch?v=IkfggBVUJxY&list=PLIY8eNdw5tW_7-QrsY_n9nC0Xfhs1tLEK Download my FREE Network Security Android App - https://play.google.com/store/apps/details?id=com.intelisenze.networksecuritytutorials Simple Snippets Official Website - http://simplesnippets.tech/ Simple Snippets on Facebook - https://www.facebook.com/simplesnippets/ Simple Snippets on Instagram - https://www.instagram.com/simplesnippets/ Simple Snippets on Twitter - https://twitter.com/simplesnippet Simple Snippets Google Plus Page - https://plus.google.com/+SimpleSnippets Simple Snippets email ID - [email protected] For More Technology News, Latest Updates and Blog articles visit our Official Website - http://simplesnippets.tech/ #DES #DataEncryptionStandard #NetworkSecurity
Views: 6367 Simple Snippets
DES- DATA ENCRYPTION STANDARD
 
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DATA ENCRYPTION STANDARD By Namratha Kalasannavar For notes, all video links, ppt, important documents, previous year question papers can visit my blog at https://namrathakalasannavar955210856.wordpress.com
DES Encryption Example Explained part 1(DES)
 
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DES Encryption Example Explained is a video explains complete DES encryption with an example ,DES Encryption Example Explained explains the DES using the animation,Here the example shows the step by step procedure to encrypt the message using DES.
Views: 2825 Mohanesh bm
Signature Approach Advantages & Disadvantages
 
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This video is part of the Udacity course "Intro to Information Security". Watch the full course at https://www.udacity.com/course/ud459
Views: 443 Udacity
Cryptography: Crash Course Computer Science #33
 
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Today we’re going to talk about how to keep information secret, and this isn’t a new goal. From as early as Julius Caesar’s Caesar cipher to Mary, Queen of Scots, encrypted messages to kill Queen Elizabeth in 1587, theres has long been a need to encrypt and decrypt private correspondence. This proved especially critical during World War II as Allan Turing and his team at Bletchley Park attempted to decrypt messages from Nazi Enigma machines, and this need has only grown as more and more information sensitive tasks are completed on our computers. So today, we’re going to walk you through some common encryption techniques such as the Advanced Encryption Standard (AES), Diffie-Hellman Key Exchange, and RSA which are employed to keep your information safe, private, and secure. Note: In October of 2017, researchers released a viable hack against WPA2, known as KRACK Attack, which uses AES to ensure secure communication between computers and network routers. The problem isn't with AES, which is provably secure, but with the communication protocol between router and computer. In order to set up secure communication, the computer and router have to agree through what's called a "handshake". If this handshake is interrupted in just the right way, an attacker can cause the handshake to fault to an insecure state and reveal critical information which makes the connection insecure. As is often the case with these situations, the problem is with an implementation, not the secure algorithm itself. Our friends over at Computerphile have a great video on the topic: https://www.youtube.com/watch?v=mYtvjijATa4 Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Want to know more about Carrie Anne? https://about.me/carrieannephilbin The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list=PL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV Want to find Crash Course elsewhere on the internet? Facebook - https://www.facebook.com/YouTubeCrash... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Views: 214625 CrashCourse
Virus, Worms and Trojan Horses Brief Introduction and Difference between their Functionality
 
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Virus, Worms and Trojan Horses Brief Introduction and Difference between their Functionality Keywords: Virus Worms Trojan Horses Network Security Notes
The one-time pad | Journey into cryptography | Computer Science | Khan Academy
 
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The perfect cipher Watch the next lesson: https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/frequency-stability?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Missed the previous lesson? https://www.khanacademy.org/computing/computer-science/cryptography/crypt/v/polyalphabetic-cipher?utm_source=YT&utm_medium=Desc&utm_campaign=computerscience Computer Science on Khan Academy: Learn select topics from computer science - algorithms (how we solve common problems in computer science and measure the efficiency of our solutions), cryptography (how we protect secret information), and information theory (how we encode and compress information). About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Computer Science channel: https://www.youtube.com/channel/UC8uHgAVBOy5h1fDsjQghWCw?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Views: 422078 Khan Academy
Lecture - 32 Basic Cryptographic Concepts Part : I
 
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Lecture Series on Internet Technologies by Prof.I.Sengupta, Department of Computer Science & Engineering ,IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 103802 nptelhrd
DES Encryption
 
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DES Encryption, P-boxes and S-Boxes, Feistel Network
Views: 37123 Natarajan Meghanathan
Encrypt And Decrypt Data In A Golang Application With The Crypto Packages
 
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Learn how to encrypt and decrypt data with AES in a Golang application using available crypto packages. A written version of this tutorial can be found at https://www.thepolyglotdeveloper.com/2018/02/encrypt-decrypt-data-golang-application-crypto-packages/
Views: 2052 Nic Raboy
Transmition Encrypt and Decrypt Code in Arduino
 
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Transmition Encrypt and Decrypt Code in Arduino Code and Simulation Transmitter encrypt Code Send to Receiver. Receiver decrypt Code after receive from Transmitter. Instructor: Chan Tola Upload by Tann Thona
Views: 2267 Thona Tann
NETWORK SECURITY - DIFFIE HELLMAN KEY EXCHANGE ALGORITHM
 
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This Algorithm is used to exchange the secret /symmetric key between sender and receiver. This exchange of key can be done with the help of public key and private key step 1 Assume prime number p step 2 Select a such that a is primitive root of p and a less than p step 3 Assume XA private key of user A step 4 Calculate YA public key of user A with the help of formula step 5 Assume XB private key of user B step 6 Calculate YB public key of user B with the help of formula step 7 Generate K secret Key using YB and XA with the help of formula at Sender side. step 8 Generate K secret Key using YA and XB with the help of formula at Receiver side.
What is Cryptography? - Encryption and Decryption
 
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Understand the basics of cryptography and the concept of symmetric or private key and asymmetric or public key cryptography. Also, a simple example of how cryptography is applied in web browsers. Link to "Applications of Public Key Cryptography" video: https://www.youtube.com/watch?v=Uk1mjEpW33s
Views: 7000 Biz Sci Tech
DES Substitution Boxes
 
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CSCI 361 Assignment 2 DES Video Topic: Substitution Boxes (S-Box) Video generated by Microsoft Powerpoint
Views: 5814 Jax Lee
Public and Private Key Encryption in Hindi
 
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For More Study Material Visit our website: www.olevelprojects.com www.olevelprojects.co.in We are making the best study material for you and will deliver it as per the modern trend of NIELIT exams. Those people who can't afford coaching classes will be directly benefited from this channel. Spread the word OLevelProjects.com , encourage us to becoming the best community there for we can deliver best education for you . This Video Covers Following Searches: public and private key encryption, public key and private key encryption, discuss public and private key encryption methods, public and private key encryption methods, advantages and disadvantages of public and private-key encryption, difference between public and private key encryption, how public and private key encryption works, pgp encryption public and private key, public and private key encryption definition, public and private key encryption example, public and private key encryption explained, public and private key encryption in O Level, public and private key encryption pdf, public and private key encryption ppt, public key private key encryption explained, public key private key encryption java, public private key encryption software, public vs private key encryption, what is public and private key encryption
Views: 112 O Level Projects
Smartcard Based Authentication, Cons of Smartcard Password Management System
 
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User Authentication Smartcard Based Authentication, Cons of Smartcard Password Management System Keywords: Smartcard In Network Security Network Security Notes Smartcard Based Authentication
DES Encryption Using Python 3 - Cryptography with Python
 
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This tutorial explains how to encrypt text using DES in Python 3.
Views: 1129 ma academy
what is encryption and decryption ? about cryptography | TECH SETTAI TAMIL
 
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what is encryption and decryption ? about cryptography | TECH SETTAI TAMIL its about the type of attack in cryptography, use of encryption and decryption. why encryption are used where encryption are used types of attack in cryptography and more SUBSCRIBE US BY CLICKING RED SUBSCRIBE BUTTON, SUPPORT US ON FB, TWITTER AND ALSO G+ twitter: https://twitter.com/TechSettai fb:https://www.facebook.com/techsettai/ g+ :https://plus.google.com/u/1/117864875... -~-~~-~~~-~~-~- Please watch: "how to install app not available in INDIA | TECH SETTAI TAMIL" https://www.youtube.com/watch?v=wF5JAhDvPQM -~-~~-~~~-~~-~-
Martijn Grooten - Elliptic Curve Cryptography for those who are afraid of maths
 
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Elliptic Curve Cryptography (ECC) is hot. Far better scalable than traditional encryption, more and more data and networks are being protected using ECC. Not many people know the gory details of ECC though, which given its increasing prevalence is a very bad thing. In this presentation I will turn all members of the audience into ECC experts who will be able to implement the relevant algorithms and also audit existing implementations to find weaknesses or backdoors. Actually, I won't. To fully understand ECC to a point where you could use it in practice, you would need to spend years inside university lecture rooms to study number theory, geometry and software engineering. And then you can probably still be fooled by a backdoored implementation. What I will do, however, is explain the basics of ECC. I'll skip over the gory maths (it will help if you can add up, but that's about the extent of it) and explain how this funny thing referred to as "point addition on curves" can be used to exchange a secret code between two entities over a public connection. I will also explain how the infamous backdoor in Dual_EC_DRGB (a random number generator that uses the same kind of maths) worked. At the end of the presentation, you'll still not be able to find such backdoors yourselves and you probably realise you never will. But you will be able to understand articles about ECC a little better. And, hopefully, you will be convinced it is important that we educate more people to become ECC-experts.
Views: 24182 Security BSides London
DES Encryption Example Explained part2
 
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DES Encryption Example Explained is a video explains complete DES encryption with an example ,DES Encryption Example Explained explains the DES using the animation,Here the example shows the step by step procedure to encrypt the message using DES.
Views: 1177 Mohanesh bm
Cryptography Best Practices - Bart Preneel
 
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Application architects need to make informed choices to use cryptography well: + Alternative key architectures have their merits and drawbacks. PKIs, in particular, should be contrasted with symmetric key architectures such as Kerberos. + Network protocol characteristics are pivotal in ensuring distributed applications meet security requirements. Key strength choices impact on security guarantees offered, as do cryptographic algorithm modes. + While strong keys and wise use of cryptographic algorithms may thwart cryptanalytic attack, applications are insecure without prudent key management. In this context, key generation and key storage require particular attention. + The selection of crypto-libraries requires awareness of inherent library qualities and failures. Application developers are advised not to implement their own. Learning objectives + decide if and when cryptography should be used. + make informed key architecture and management decisions. + use appropriate algorithms and parameters. + select an appropriate cryptographic library. + choose network protocols for distributed applications. This lecture was delivered 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 KU Leuven and was visiting professor at the Ruhr Universitaet Bochum (Germany), the T.U.Graz (Austria), the University of Bergen (Norway), and the Universiteit Gent (Belgium). In '93-'94 he was a research fellow at the University of California at Berkeley. He has taught intensive courses around the world. He undertakes industrial consulting (Mastercard International, S.W.I.F.T., Proton World International,...), and participates in the work of ISO/IEC JTC1/SC27/WG2. Professor Preneel is Vice President of the International Association for Cryptologic Research (IACR) and co-founder and chairman of LSEC vzw (Leuven Security Excellence Consortium).
Views: 2886 secappdev.org
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: 468551 Computerphile
E-Compiler for Java with Security Editor Java Project
 
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E-Compiler for Java with Security Editor ABSTRACT The main aim of this project we can easily to write a java program and compile it and debug in on-line. The client machine doesn’t having java development kit .The client machine only connected to the server. The server having java compiler .so server executes the java code and produce the error message to the appropriate client machine. E-Compiler for java with security editor has 4 modules. 1. Java File Compilation: 2. Java API Information 3. Encryption 4. Decryption In this project is also creating a security editor. This editor performs Encrypt and decrypts the file. Encryption and decryption process perform using RSA Algorithms. There is lot of security algorithms are there, but RSA algorithm is very efficient to encrypt and decrypt the file. In this project is used to view all type of java API .It is very useful for writing the java program easily, for example if any error in the format of API means we can able to view API throw this modules. EXISTING SYSTEM: In the existing system, the compilation of the java programs is not through online. It is an offline process where the client or user has to install the Java Development Kit (JDK) in the host machine. One has to choose the software that is compatible with hardware specification of the system. The user has to give the command in the command prompt for the compilation of the java program. There should be enough memory space in the memory devices in the host machine for the installation of the JDK. The Existing System has many disadvantages. The following are the disadvantages of using the existing system: Disadvantages: 1. The software should be compatible with the hardware specification of the host machine. 2. More memory is utilized in the host machine as the Java Development Kit need to be installed in the host machine. PROPOSED SYSTEM AND ITS ADVANTAGES In the proposed system, the compilation is performed online where a editor is provided for the user to create the java program. This created Java Program is saved in the server with the name provided in the directory with the host address having the subdirectory as the username. This saved java program is then compiled with the help of JDK which is installed in the server machine. Hence the server compiles the java program. Thus the compilation is carried out online. The editor in E-Compiler is a security editor which helps in encrypting the code. In the encryption process the code is converted to the cipher text which is not understandable. The cipher text must be decrypted in order to make it readable. In the decryption process the cipher text is converted back to the plain text that can be understandable. The process of encryption and decryption is carried out using the RSA algorithm. Hence the proposed system provides security to the data of the user. The following are the advantages of using the proposed system: Advantages: 1. Compilation is through online. 2. Software need not be installed in the client machine. 3. Memory can be saved for the client machine 4. The client machine need not be compatible with the JDK software but should be able to run a browser in it. 5. It provides security to the client information. PROPOSED SYSTEM: The proposed system is designed to eliminate the problems in the existing system. The main aim of this project we can easily compile a java program .The client machine doesn’t having java development kit .The client machine only connected to the server. The server having java compiler .so server executes the java code and produce the error message to the appropriate client machine. Advantages over Existing System: • We can compile and run our java program online. • On-line access is provided for the saved files • No need to install jdk in our own system Modules 1. JAVA FILE CREATION 2. JAVA FILE COMPILLATION 3. JAVA API INFORMATION 4. ENCRYPTION 5. DECRYPTION 6. MY ACCOUNT SYSTEM REQUIREMENT SPECIFICATION: Software Requirements: Operating System : Windows Front End : HTML Middle Ware : Java Servlets Back End : Oracle/Access CONTACT DETAILS: 1000 Projects, Flat No: 518, Fifth Floor, Annapurna Block, Adithya Enclave, Ameerpet, Hyderabad, Telangana – 500016. India. Phone : +91 9052016340, +91 7702177291, +91 9553021804 Email : [email protected] Website : www.1000projects.org
Views: 2878 1000 Projects
Authentication Tokens, Types pf Tokens – Challenge/Response and Time Based Tokens
 
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User Authentication - Authentication Tokens, Types pf Tokens – Challenge/Response and Time Based Tokens Keywords: Authentication Tokens in Security Token based Password Management Challenge/Response Based Token Time Based Token Network Security Notes
Symmetric Key Encryption and Data Authentication
 
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Dig a little deeper into symmetric key encryption to find out about one of the basic methods of encrypting data and a simple algorithm for checking that the data is authentic.
Views: 597 Vidder, Inc.
The Data Encryption Standard (DES ) in arabic java gui
 
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source code https://github.com/MohammedA-Farag/Data-Encryption-Standard-des-algorithm Data-Encryption-Standard-des-algorithm The Data Encryption Standard (DES ) is a symmetric-key algorithm for the encryption of electronic data. The Data Encryption Standard (DES ) is a symmetric-key algorithm for the encryption of electronic data. Although insecure, it was highly influential in the advancement of modern cryptography. The Feistel (F) function The F-function, depicted in Figure 2, operates on half a block (32 bits) at a time and consists of four stages: The Feistel function (F-function) of DES Expansion: the 32-bit half-block is expanded to 48 bits using the expansion permutation, Key mixing: the result is combined with a subkey using an XOR operation. Sixteen 48-bit subkeys—one for each round—are derived from the main key using the key schedule Substitution: after mixing in the subkey, the block is divided into eight 6-bit pieces before processing by the S-boxes, or substitution boxes.  produce 32bit Permutation: finally, the 32 outputs from the S-boxes are rearranged according to a fixed permutation, the P-box. This is designed so that, after permutation, the bits from the output of each S-box in this round are spread across four different S-boxes in the next round. https://drive.google.com/open?id=18uadgOWHPDbSPrU6Syx3v_E5Xvs8LXZq
Views: 49 mohamed farg
Oblivious Transfer
 
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http://asecuritysite.com/encryption/ot
Views: 1697 Bill Buchanan OBE
( Hindi ) Zero knowledge Proof क्या है  ZK-SNARKS Zencash Zcash ZCoin
 
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Hi In this video I have explained the basic protocol i.e Zero knowledge protocol that's implemented by most of the privacy based crypto currency. Here I have use the example of Alibaba cave. source : https://en.wikipedia.org/wiki/Zero-knowledge_proof
Views: 386 TechnoSaviour
Cryptography Android App
 
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✴ Cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages; various aspects in information security such as data confidentiality, data integrity, authentication, and non-repudiation are central to modern cryptography. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, electrical engineering, communication science, and physics. Applications of cryptography include electronic commerce, chip-based payment cards, digital currencies, computer passwords, and military communications.✴ https://play.google.com/store/apps/details?id=in.softecks.cryptography ► This App is meant for students of computer science who aspire to learn the basics of cryptography. It will be useful for networking professionals as well who would like to incorporate various cryptographic algorithms to ensure secure data communication over their networks.✦ 【Topics Covered in this App are Listed Below】 ⇢ Origin of Cryptography ⇢ Modern Cryptography ⇢ Cryptosystems ⇢ Attacks On Cryptosystems ⇢ Traditional Ciphers ⇢ Modern Symmetric Key Encryption ⇢ Block Cipher ⇢ Feistel Block Cipher ⇢ Data Encryption Standard ⇢ Triple DES ⇢ Advanced Encryption Standard ⇢ Block Cipher Modes of Operation ⇢ Public Key Encryption ⇢ Data Integrity in Cryptography ⇢ Cryptography Hash functions ⇢ Message Authentication ⇢ Cryptography Digital signatures ⇢ Public Key Infrastructure ⇢ Cryptography Benefits & Drawbacks
Views: 291 10 Up's.!
How Does SHA-1 Work - Intro to Cryptographic Hash Functions and SHA-1
 
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Learn more advanced front-end and full-stack development at: https://www.fullstackacademy.com SHA-1 stands for Secure Hash Algorithm 1, a cryptographic hash function developed by the NSA that can be used to verify that a file has been unaltered. In this video, we go over the basic features and common implementations of cryptographic hash functions before diving into the inner workings of a Javascript implementation of the SHA-1 function. Although out of use now, walking through the hash function code provides valuable insight into how these algorithms work. Watch this video to learn: - What are Cryptographic Hash Functions - Practical uses for Cryptographic Hash Functions - How does SHA-1 work
Views: 11995 Fullstack Academy
Security Snippet: Triple DES
 
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The tutorial is at: http://www.asecuritysite.com/Encryption/threedes
Views: 3310 Bill Buchanan OBE
Insecure Cryptographic Storage Explained
 
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Protecting sensitive data with cryptography has become a key part of most web applications. Simply failing to encrypt sensitive data is very widespread. Applications that do encrypt frequently contain poorly designed cryptography, either using inappropriate ciphers or making serious mistakes using strong ciphers. These flaws can lead to disclosure of sensitive data and compliance violations. This video explains Insecure Cryptographic Storage and provides details on how to protect your software from insecure crypto vulnerabilities. For more info visit http://www.veracode.com
Views: 2399 VERACODE
Applied Cryptography: DES in Java - Part 2
 
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Previous video: https://youtu.be/MZhCpMtwHrM Next video: https://youtu.be/Eokz2arVLDI
Views: 966 Leandro Junes
Hak5 - Encryption 101, Hak5 1115
 
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Encryption 101 begins with understanding the terminology and mechanisms. This week we're breaking down encryption in the context of SSH - from symmetric and asymmetric to block and stream ciphers. All that and more, this time on Hak5. If you're into Hak5 you'll love our new show by hosts Darren Kitchen and Shannon Morse. Check out http://www.revision3.com/haktip Whether you're a beginner or a pro, http://www.revision3.com/haktip is essential viewing for current and aspiring hackers, computer enthusiasts, and IT professionals. With a how-to approach to all things Information Technology, HakTip breaks down the core concepts, tools, and techniques of Linux, Wireless Networks, Systems Administration, and more. And let's not forget to mention that you can follow us on http://www.twitter.com/hak5 and http://www.facebook.com/technolust, http://revision3.com/hak5/follow to the show and get all your Hak5 goodies, including the infamous wifi-pineapple over at http://hakshop.com . If you have any questions or suggestions please feel free to contact us at [email protected]
Views: 18330 Hak5
Cryptography Concepts - CompTIA Security+ SY0-501 - 6.1
 
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Security+ Training Course Index: http://professormesser.link/sy0501 Professor Messer’s Course Notes: http://professormesser.link/501cn Frequently Asked Questions: http://professormesser.link/faq - - - - - The basics of cryptography are valuable fundamentals for building a secure network. In this video, you’ll learn about cryptographic terms, the value of the key, the concepts of confusion and diffusion, and more. - - - - - Subscribe to get the latest videos: http://professormesser.link/yt Calendar of live events: http://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: http://www.professormesser.com/ Twitter: http://www.professormesser.com/twitter Facebook: http://www.professormesser.com/facebook Instagram: http://www.professormesser.com/instagram Google +: http://www.professormesser.com/googleplus
Views: 25663 Professor Messer
Firewalls and Their Types - Cryptography and Network Security - GATE(CSE)
 
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The complete YouTube playlist can be viewed here: https://goo.gl/mjyDev This lesson explains the concept of Firewalls and Their Types, under the course, "Cryptography and Network Security for GATE Computer Science Engineering". The lesson illustrated the following subtopics: Firewalls Types of Firewalls - Packet filtering router Application-level gateway Circuit-level gateway 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. Download the Unacademy Learning App from the Google Play Store here:- https://goo.gl/02OhYI Download the Unacademy Educator app from the Google Play Store here: https://goo.gl/H4LGHE Do Subscribe and be a part of the community for more such lessons here: https://goo.gl/UGFo7b Visit Our Facebook Group on GATE here: https://goo.gl/cPj5sb Firewalls and Their Types - Cryptography and Network Security - GATE(CSE)
What Is Digital Signature In Cryptography?
 
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In the united states and certain other countries. Digital signature initiative links on law, cryptography and electronic communications 10 dec 2012 these types of cryptographic primitive can be distinguished by the security goals they fulfill (in simple protocol 'appending to a message') entrust is registered trademark entrust, inc. Bitcoin digital signatures (video) microsoft docs. Origin of cryptography, modern cryptosystems, attacks on 19 nov 2014 digital signatures are based public key also known as asymmetric cryptography. Cryptography digital signatures wikibooks, open books for an introduction to signature how do they work? Cgi. How do digital signatures work? Youtube. What is digital signature? Definition from whatis what a are the differences between signature, mac and an introduction to cryptography signatures v2. Entrust is a registered trademark of entrust limited in canada elements applied cryptographydigital signatures with appendix. Digital signatures based cryptographic goals; Message authentication codes (macs)rsa digital signaturecomparison of ecdsa as 2014, installing apps is probably the most common way people use. Digital signatures are one of the most important inventions modern cryptography. Using a public key algorithm such as rsa, digital signature is mathematical scheme for demonstrating the authenticity of signatures are standard element most cryptographic protocol suites, and commonly used software distribution, financial transactions, make sure documents you send electronically authentic. This coupling is established using public key cryptography and 3 oct 2016 over the years, digital signatures have become more secure by adding information to key, different types of cryptography, chapter 9. The problem is how can a user sign What digital signature? Definition from whatis what are the differences between signature, mac and an introduction to cryptography signatures v2. Keys are used to encrypt information. Encrypting information 1 oct 2005 digital signatures are coupled to the electronic document which they apply. Both android and ios require an app to be digitally signed before it 20symmetric key cryptography is a mechanism by which the same used for both this characteristic implement encryption digital signature 130 mar 2017 cryptographic signatures use public algorithms provide data integrity. What is a digital signature? . Chapter 09 digital signatures fi muni. Digital signatures with message recovery. Understanding digital certificates technet microsoft. Learn about digital signatures and other authentication methods. Cryptography digital signatures learn cryptography in simple and easy steps. Crash c
Views: 45 Hadassah Hartman
DES Encryption using OpenSSL
 
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DES Encryption using OpenSSL
Cryptography  attacks on stream ciphers and the one time pad
 
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Cryptography attacks on stream ciphers and the one time pad To get certificate subscribe: https://www.coursera.org/learn/crypto Playlist URL: https://www.youtube.com/playlist?list=PL2jykFOD1AWYosqucluZghEVjUkopdD1e About this course: Cryptography is an indispensable tool for protecting information in computer systems. In this course you will learn the inner workings of cryptographic systems and how to correctly use them in real-world applications. The course begins with a detailed discussion of how two parties who have a shared secret key can communicate securely when a powerful adversary eavesdrops and tampers with traffic. We will examine many deployed protocols and analyze mistakes in existing systems. The second half of the course discusses public-key techniques that let two parties generate a shared secret key.
Views: 452 intrigano