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Security+5e Lab5-2: Running an RSA Cipher Demonstration
 
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The steps for encryption using RSA can be illustrated in a Java applet on a website. In this lab, we'll observe how RSA encrypts and decrypts.
Views: 602 LabMentors Online
Simple Encryption Tool Demo
 
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A quick demo of a tool for encrypting a message with a monoalphabetic substitution cipher, for use with a number theory class that will involve the basics of encryption.
Views: 133 David Metzler
symmetric key cryptography
 
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https://8gwifi.org/CipherFunctions.jsp Reference book: http://leanpub.com/crypto Cryptographic Algorithms generally fall into one of two different categories, or are a combination of both. Symmetric Fast Only provide confidentiality Examples: DES, AES, Blowfish, RC4, RC5 Asymmetric Large mathematical operations make it slower than symmetric algorithms No need for out of band key distribution (public keys are public!) Scales better since only a single key pair needed per individual Can provide authentication and nonrepudiation Examples: RSA, El Gamal, ECC, Diffie-Hellman problem with symmetric key cryptography DES (Data Encryption Standard) 64 bit key that is effectively 56 bits in strength Actual algorithm is called DEA (Data Encryption Algorithm) DES Modes Electronic Code Book Cipher Block Chaining (most commonly used for general purpose encryption) Cipher Feedback Output Feedback Counter Mode (used in IPSec) 3DES 112-bit effective key length Uses either 2 or 3 different smaller keys in one of several modes Modes EEE2/3 EDE2/3 AES NIST replaced DES in 1997 with this Uses the Rijndael algorithm Supports key/block sizes of 128, 192, and 256 bits Uses 10/12/14 rounds as block size increases IDEA (International Data Encryption Algorithm) Operates on 64 bit blocks in 8 rounds with 128 bit key Considered stronger than DES and is used in PGP Blowfish 64 bit block cipher with up to 448 bit key and 16 rounds Designed by Bruce Schneier RC4 Stream cipher with variable key size created by Ron Rivest RC5 Another Rivest cipher Block cipher with 32/64/128 bit blocks and keys up to 2048 bits RC6 Beefier version of RC5 submitted as AES candidate CAST 64 bit block cipher with keys between 40-128 bits with 12-16 rounds depending on key length CAST-256 used 128-bit blocks and keys from 128-256 bits using 48 rounds SAFER (Secure and Fast Encryption Routine) Set of patent-free algorithms in 64 and 128 bit block variants Variation used in Bluetooth Twofish Adapted version of Blowfish with 128 bit blocks, 128-256 bit keys and 16 rounds AES Finalist Kryptografie mit symmetrischem Schlüssel symmetric key cryptography symmetric key cryptography tutorial symmetric key cryptography example symmetric key cryptography vs asymmetric key cryptography symmetric and asymmetric key cryptography symmetric key cryptography Kryptografie mit symmetrischem Schlüssel Kryptographie mit symmetrischem Schlüssel Kryptographie mit symmetrischem Schlüssel Kryptografie mit symmetrischem Schlüssel und asymmetrische Schlüsselkryptographie symmetrische und asymmetrische Schlüsselkryptographie Kryptografie mit symmetrischem Schlüssel
Views: 39028 Zariga Tongy
decryption https RSA
 
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Views: 242 Eric Xu
RSA codes
 
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The uncrackable RSA code! Jupiter explains one of the murderous codes in the whole world. SUBSCRIBE TO ScienceMindBlow!
Views: 158 ScienceMindBlow
How to encrypt basic data using hashcalc
 
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HashCalc is a fast and easy to use calculator that allow computing message Checksums and HMACs for files,as well as for text and hex strings.It is most popular hash and checksum algorithms for calculations. FOr more tutorial visit here: http://www.madhnw0rm.com/2015/08/basic-data-encryption-using-hashcalc.html
Views: 453 Madhan Raj
Public Key Cryptography: Diffie-Hellman Key Exchange (short version)
 
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This is a segment of this full video: https://www.youtube.com/watch?v=YEBfamv-_do Diffie-Hellman key exchange was one of the earliest practical implementations of key exchange within the field of cryptography. It relies on the discrete logarithm problem. This test clip will be part of the final chapter of Gambling with Secrets!
Views: 441329 Art of the Problem
RSA Algorithm concept and Example
 
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Enroll to Full Course: https://goo.gl/liK0Oq Networks#4: The video explains the RSA Algorithm (public key encryption) Concept and Example along with the steps to generate the public and private keys. The video also provides a simple example on how to calculate the keys and how to encrypt and decrypt the messages. For more, visit http://www.EngineeringMentor.com. FaceBook: https://www.facebook.com/EngineeringMentor. Twitter: https://www.twitter.com/Engi_Mentor
Views: 158263 Skill Gurukul
Provisioning RSA Software Tokens via QR Code
 
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End user self-provisions a software token to their mobile handset using a QR code to access the token URL.
Views: 12660 RSA SECURITY AU
Cryptography Benchmark.avi
 
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Crytography computer benchmark processor
Views: 50 jmorri92
Cracking a Simple Substitution Cipher (Demo)
 
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Here I demonstrate using Simon Singh's Substitution Cracking Tool to decipher a message that was encrypted using a simple (i.e. monoalphabetic) substitution cipher. The basic tool used is frequency analysis, which the Tool does automatically.
Views: 2250 David Metzler
SHA1 length extension attack on the Secure Filesystem - rhme2 Secure Filesystem (crypto 100)
 
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The first challenge I solved for the embedded hardware CTF by riscure. It implements a Secure Filesystem which prevents you from readeing files without knowing the correct token for a file. Load the challenge on your own board: https://github.com/Riscure/Rhme-2016 -------------------------------------- Twitter: https://twitter.com/LiveOverflow Website: http://liveoverflow.com/ Subreddit: https://www.reddit.com/r/LiveOverflow/
Views: 11292 LiveOverflow
Source code Digital Signature RSA/Source code chữ ký số sử dụng giải thuật RSA code Java
 
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Soure code Digital Signature RSA/Soure code chữ ký số sử dụng giải thuật RSA Các bạn liên hệ qua email:[email protected] để lấy soure Blog chứa source :https://nguyendangkhiemit.wordpress.com/2014/10/19/chu-ky-so-su-dung-giai-thuat-rsa/
Views: 6980 LAM TU
Mac Version: AES Crypt Tool
 
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Advanced Encryption Standard (AES) is a popular encryption method known for its strong capability in securing files. AES Crypt is a tool that is based on AES encryption method and it uses 256-bit algorithm key. This video shows how to use the AES crypt tool for encrypting any sensitive information you have. The video will be showing how to use this tool for Mac operating system. For more information refer to the following links: Tool Link: https://www.aescrypt.com/download/ AES Explained: http://searchsecurity.techtarget.com/definition/Advanced-Encryption-Standard Encryption and AES story: http://www.moserware.com/2009/09/stick-figure-guide-to-advanced.html Prepared by: Daniel Burget and Yousef Atsh
Views: 632 Yousef Atsh
image cryptograpy rsa
 
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menggunakan kunci p:47 Q:71 E:79 D:1019 N:3337 menggunakan 16 byte resolusi gambar :449X832
Views: 41 Roziku Nooriza
Source code Algorithm RSA- Giải thuât RSA code Java
 
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Source code Algorithm RSA- Giải thuât RSA Liên hệ email:[email protected] để lấy source. Đọc hiểu thêm phần BigInteger trong java https://nguyendangkhiemit.wordpress.com/2014/10/19/algorithm-rsa-java-giai-thuat-rsa-code-java/
Views: 6784 LAM TU
Cryptography: Transposition Cipher
 
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This lesson explains how to encrypt and decrypt a message using a transposition cipher. Site: http://mathispower4u.com
Views: 54856 Mathispower4u
Remove Ransomware Decrypt ACCDFISA Protection Program by Britec
 
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Remove Ransomware Decrypt ACCDFISA Protection Program by Britec The ACCDFISA Protection Program is a ransomware computer infection that pretends to encrypt your files using AES encryption and then locks you out of the Windows desktop. When first encountered, this infection will state that it is from the Anti Cyber Crime Department of Federal Internet Security Agency and that a computer virus has been detected that is sending out SPAM email containing links to web sites hosting child pornography. The program then states that your data and computer will be inaccessible unless you use the Moneypak or Paysafecard services to send $100 via SMS to a particular phone number within 48 hours. It further warns that if you wait longer than 48 hours, the ACCDFISA program will delete your operating system and documents. As you can imagine this is all a scam that is being performed to scare you into paying $100 dollars for the proper operation of your computer and the restoration of your data. For no reason should you pay this ransom and should instead use the steps below to regain access to your data and computer. More advise on removing this ransomware can be found here: http://www.bleepingcomputer.com/virus-removal/remove-decrypt-accdfisa-protection-program Download malwarebytes here: http://www.malwarebytes.org/ ------------------------------------------------------------------ need help with your computer? http://www.briteccomputers.co.uk/forum
Views: 19736 Britec09
RC4.pptx.mp4
 
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Views: 1975 moss shaikh
Encrypt, Decrypt, Shred Your Files with EasyKrypt Data Protection Software
 
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http://www.easykrypt.com The EasyKrypt software application makes it easy to encrypt, decrypt or shred your files by simply dragging them to the appropriate hot-spot. Be safe. Be smart. With advanced data protection from EasyKrypt.
Views: 152 EasyKrypt
What is ChatLink?
 
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Privacy is back! https://chatlink.com What makes Chatlink secure? * No need to trust the website creator * No need to trust the server manager * No need to trust SSL/TLS certificate * All messages are encrypted with AES * Chatlink does not have the keys for decryption * No backdoors * No user tracking * No registration * No need to install anything * No 3rd party controlled Javascript (no Google Analytics, no TypeKit) * You can delete all your messages at any time * Chatlink is open source Read more https://chatlink.com/#about Contact US via ChatLink --- https://chatlink.com/#chatlink-team e-mail --- [email protected] Animation by CINESTOPIA [email protected]
Views: 2718 Chat Link
Use Java program to generate a 1024-bit RSA keypair(使用Java產生1024-bit的RSA金鑰對 )
 
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http://anwendeng.blogspot.tw/2014/10/java1024-bitrsa.html 使用Java產生1024-bit的RSA金鑰對,用到BigInteger, SecureRandom等Class
Views: 1252 Anwen Deng
Windows 10 RSA
 
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Views: 5137 zub zer0
AES Cracking
 
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Demo based on: https://www.linkedin.com/pulse/article/20141130113917-15260610-otp-the-uncrackable-code
Views: 14544 Bill Buchanan OBE
How to decrypt Nemucod Trojan's .CRYPTED Ransomware
 
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How to decrypt Nemucod Trojan's .CRYPTED Ransomware Bleeping computer: https://www.bleepingcomputer.com/news/security/decryptor-released-for-the-nemucod-trojans-crypted-ransomware/
Views: 5541 Joeteck
Silver Key- encrypting/decrypting software | tutorial by TechyV
 
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You can ask questions related to IT for free. Get answers in few hours. For the latest tech news and tips visit us at: http://www.techyv.com Silver Key is a software that is very useful when you find yourself in a position where you are required to share critical information using a secure medium. It has a quick context menu which makes it very easy to encrypt files. It also has drag and drop capabilities. The interface of Silver Key has three panes but encryption does not require you to open the interface. Download Silver Key here http://download.cnet.com/Silver-Key/3000-2092_4-10039701.html You will definitely require this program if you frequently send out files that have critical data.
Views: 1109 Techyv
TL;DR it's AES... - White Box Unboxing 2/4 - RHme3 Qualifier
 
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Long story short, we reverse more and more of the binary and with some hints we realize, it's AES afterall. Challenge: https://github.com/Riscure/Rhme-2017/tree/master/prequalifications/White%20Box%20Unboxing -------------------------------------- Twitter: https://twitter.com/LiveOverflow Website: http://liveoverflow.com/ Subreddit: https://www.reddit.com/r/LiveOverflow/ Facebook: https://www.facebook.com/LiveOverflow/
Views: 6316 LiveOverflow
How To Encrypt Decrypt Text Using Cryptographic Web Tool
 
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this video is created for http://cryptool.shareme.in/
Views: 1375 OmniMobile2011
MITM and Brute Force Attacks on DES and AES (CSS322, L7, Y14)
 
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Meet-in-the-middle attack on Double DES explained; example of OpenSSL for encryption; brute force attacks on DES and AES. Course material via: http://sandilands.info/sgordon/teaching
Views: 2444 Steven Gordon
[C#] Encrypting Files with AES
 
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A simple C# application that encrypts files with AES (Advanced Encryption Standard). As shown in the video, an encrypted file can only be decrypted with the same key (case sensitive). Trying to decrypt it with an invalid key will result in an exception. Note: This implementation, with a bit of rework, can work fast with lots of small files. Instead of computing the cipher for every file, it computes it once (See GetCipher()) and uses it for every file. It cannot encrypt large files. For that, you need to chain streams instead of reading the whole file in a byte array. I have a WinForms implementation on my GitLab page (it chains streams but doesn't use GetCipher()): https://gitlab.com/UnexomWid/PadlockU --Music: Artist: Nicolai Heidlas Title: Futuristic Technology https://soundcloud.com/nicolai-heidlas --Links: Website: https://unexomwid.github.io Github: https://github.com/UnexomWid Twitter: https://twitter.com/UnexomWid
Views: 46 UnexomWid
How to change Paytm ATM Pin😯
 
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[email protected] WhatsApp no = 9044697719
Crypto Complete Video Success Story
 
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http://www.LinomaSoftware.com/Crypto Interview with Giuliano Franciscovic with National Telewire (http://www.telewire.com/) at the COMMON User's Conference in Anaheim about his experience with Linoma Software's encryption tool, Crypto Complete. For more information, visit http://www.LinomaSoftware.com.
Views: 127 LinomaSoftware
Demo Common Modulus Attack
 
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Quick demo for Crypto Class.
Views: 511 Quân Đoàn
Digital signature in Alfresco  ECM via applet
 
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Digital signature in Alfresco ECM via applet
Views: 2543 Sinadura Zylk
En-Decrypt Tool 2.0
 
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Views: 2339 Quoc Thang Tran
JPEG image decryption using TransCrypt Image
 
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This video shows how previously encrypted JPEG image can be decrypted using new TransCrypt Image. New TransCrypt Image is now being prepared for commercial use and will allow users to encrypt, sign, decrypt JPEG images without changing file format, that means a possibility to post , send and distribute secure JPEG images using normal means (social networks, email) like if it is a normal picture. Only specified will be able to see the content of image and you will not have to be worried about about security or authorship of our images. Demo download: Win 32 bit version http://www.secomsoft.com/en/arc/soft/tcimg112_en_x86.exe Win 64 bit version: http://www.secomsoft.com/en/arc/soft/tcimg112_en_x64.exe
Views: 19865 Buypki
Scripting in Python - Encryption / Decryption
 
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Here is a program I made for class. It demonstrates a basic idea of encrypting string values into numbers, then binary and back again.
Views: 3690 Alex Thompson
Structural Evaluation of AES and Chosen-Key Distinguishe ...
 
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Talk at crypto 2013. Authors: Pierre-Alain Fouque, Jérémy Jean, Thomas Peyrin
Views: 88 TheIACR
How To Decrypt any Password Protected .RAR File *VOICE* *Legal*
 
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Like and Favorite if you enjoyed,and Subscribe to BECOME a TGCrafter ☺ Direct Download Link:http://www.mediafire.com/download/b6xaab6uerx485o/RAR+Password+Unlocker.rar
Views: 17465 Trentisdead
WeTalkNerdy.tv - Episode 010
 
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This week, I talk nerdy about Windows 8.1, Haswell, and The NSA's Prism program. I also explain how to make a .nomedia file so Android doesn't include podcasts in your music library. Finally, I explain everything you need to know about the LastPass password manager.
Views: 125 WeTalkNerdy.tv
AES Rijndael Cipher - Visualization
 
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A video of flash animation of the cipher used for AES encryption process. Disclaimer: I did the work of creating video from flash animation. Credit of flash animation goes to its author. At the moment, I do not have a link to the source for flash animation.
Views: 105434 AAA
OpenSSL Tutorials #4: RSA key Creation and Encryption/Decryption
 
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This show how to cipher a plain text and how to decipher the crypted text
Views: 6130 Openssl
Crypto Lab: Diffie-Hellman, Public Key and Private Key
 
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Lab: Private Key, Public Key and Key Sharing: http://asecuritysite.com/public/lab02.pdf and details at: http://asecuritysite.com/crypto/day2
Views: 1718 Bill Buchanan OBE
Rc4 Simulation Using C
 
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Full Video Details: http://www.securitytube.net/video/39
Views: 5877 TheSecurityTube

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