Search results “No module named crypto cipher aes”
How to download and install Python Packages and Modules with Pip
This tutorial covers how to download and install packages using pip. Pip comes with newer versions of Python, and makes installing packages a breeze. ImportError: DLL load failed: The specified module could not be found : http://stackoverflow.com/questions/20201868/importerror-dll-load-failed-the-specified-module-could-not-be-found
Views: 710745 sentdex
Python Encryption Tutorial with PyCrypto
Sentdex.com Facebook.com/sentdex Twitter.com/sentdex How to use python to encrypt sensitive information, and later decrypt it, using PyCrypto! PyCrypto: https://www.dlitz.net/software/pycrypto/ The Code: http://sentdex.com/sentiment-analysisbig-data-and-python-tutorials/encryption-and-decryption-in-python-code-example-with-explanation/
Views: 79203 sentdex
Python3 Advanced Tutorial 10 - PyCrypto
This is a tutorial on PyCrypto, looking at encrypting and decrypting files using AES-256. All Links and Slides will be in the description. Subscribe for more cool stuff! Slides & files - https://www.mediafire.com/folder/blqyh7qotgu2r/Tutorial_10_-_PyCrypto Python - http://python.org/ Ubuntu - http://www.ubuntu.com/ Steam Group: http://steamcommunity.com/groups/DrapsTV Twitter: https://twitter.com/DrapsTV Ello: https://ello.co/drapstv If you like what you see be sure to subscribe and thumbs up!
Views: 23921 DrapsTV
Python Advanced Tutorial 10 - PyCrypto
This is a tutorial on PyCrypto, looking at encrypting and decrypting files using AES-256. All Links and Slides will be in the description. Subscribe for more cool stuff! Block Cipher Modes - http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation Slides & files - https://www.mediafire.com/folder/b4om18885dp0k/Tutorial_10_-_PyCrypto Python - http://python.org/ Ubuntu - http://www.ubuntu.com/ DrapsTV Twitter - https://twitter.com/DrapsTV If you like what you see be sure to subscribe and thumbs up!
Views: 43848 DrapsTV
A step by step procedure to install PYTHON,PyCrypto, and PARAMIKO links for downloading: PYTHON:https://www.python.org/downloads/ PyCrypto:http://www.voidspace.org.uk/python/modules.shtml#pycrypto pip-get:-https://pip.pypa.io/en/stable/installing/ paramiko:http://www.paramiko.org/installing.html
Views: 18173 chaitanya v
Breaking ECDSA (Elliptic Curve Cryptography) - rhme2 Secure Filesystem v1.92r1 (crypto 150)
We are going to recover a ECDSA private key from bad signatures. Same issue the Playstation 3 had that allowed it to be hacked. -------------------------------------- Twitter: https://twitter.com/LiveOverflow Website: http://liveoverflow.com/ Subreddit: https://www.reddit.com/r/LiveOverflow/
Views: 25061 LiveOverflow
Python Quick Tip: Hiding Passwords and Secret Keys in Environment Variables (Windows)
In this Python Programming Tutorial, we will be learning how to hide passwords and secret information within environment variables on Windows machines. Hard-coding secret information is a common mistake that beginners make when learning Python. Hiding this information within environment variables allows you to access your secret information within your code without anyone else being able to see these values from your source code. Let's get started... The code from this video can be found at: https://github.com/CoreyMSchafer/code_snippets/tree/master/Python/Python-Environment-Variables Python Environment Variables (Mac & Linux): https://youtu.be/5iWhQWVXosU If you enjoy these videos and would like to support my channel, I would greatly appreciate any assistance through my Patreon account: https://www.patreon.com/coreyms Or a one-time contribution through PayPal: https://goo.gl/649HFY If you would like to see additional ways in which you can support the channel, you can check out my support page: http://coreyms.com/support/ Equipment I use and books I recommend: https://www.amazon.com/shop/coreyschafer You can find me on: My website - http://coreyms.com/ Facebook - https://www.facebook.com/CoreyMSchafer Twitter - https://twitter.com/CoreyMSchafer Google Plus - https://plus.google.com/+CoreySchafer44/posts Instagram - https://www.instagram.com/coreymschafer/ #Python
Views: 9877 Corey Schafer
Secure POS data transfer with Point-to-Point-Encryption (P2PE)
Computop's omnichannel POS solutions are PCI P2PE certified and enable merchants to set up highly secure data transfer without any risk of data breaches.
Views: 567 ComputopTV
Transmition Encrypt and Decrypt Code in Arduino
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: 1249 Thona Tann
Linear Cryptanalysis
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: 16773 nptelhrd
Breaking AES with ChipWhisperer - Piece of scake (Side Channel Analysis 100)
Terrible DPA explanation and sharing my experience solving the side channel analysis challenge "piece of scake" from the rhme2 CTF. A real DPA tutorial by Colin O'Flynn: https://www.youtube.com/watch?v=OlX-p4AGhWs The ChipWhisperer AES tutorial: http://www.newae.com/sidechannel/cwdocs/tutorial.html ChipWhsiperer: http://newae.com/tools/chipwhisperer/ The DPA paper: https://www.rambus.com/introduction-to-differential-power-analysis-and-related-attacks/ rhme2 challenge files: https://github.com/Riscure/Rhme-2016 -------------------------------------- Twitter: https://twitter.com/LiveOverflow Website: http://liveoverflow.com/ Subreddit: https://www.reddit.com/r/LiveOverflow/
Views: 28915 LiveOverflow
New Crypto Key Storage Options in the Google Cloud Platform (Cloud Next '18)
Efficient key management and data-at-rest encryption in GCP is possible today through Cloud KMS. Using Cloud KMS, applications have access to industry compliant symmetric key cryptography to either directly encrypt blocks of data or manage the keys used in other GCP services. But what if you need more? Come to this session to learn about the great new enhancements coming to Cloud KMS and key management in general. SEC210 Event schedule → http://g.co/next18 Watch more Security sessions here → http://bit.ly/2zJTZml Next ‘18 All Sessions playlist → http://bit.ly/Allsessions Subscribe to the Google Cloud channel! → http://bit.ly/NextSub
Application of Elliptic Curves to Cryptography
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: 9999 nptelhrd
Passwords & hash functions (Simply Explained)
How can companies store passwords safely and keep them away from hackers? Well let's find out! With all the data breaches lately, it's likely that the password of one of your accounts has been compromised. Hackers now might know the password you've used, but they also might not.. To understand why, we'll take a look at what methods a company can use to protect user passwords. We'll take a look at encryption, hash functions and a multilayer approach! 📚 Sources Can be found on my website: https://savjee.be/videos/simply-explained/hash-functions/ 🌍 Social Twitter: https://twitter.com/savjee Facebook: https://www.facebook.com/savjee ✏️ Check out my blog https://www.savjee.be
Key Updating for Leakage Resiliency With Application to AES Modes of Operation
Key Updating for Leakage Resiliency With Application to AES Modes of Operation To get this project in ONLINE or through TRAINING Sessions, Contact:JP INFOTECH, Old No.31, New No.86, 1st Floor, 1st Avenue, Ashok Pillar, Chennai -83. Landmark: Next to Kotak Mahendra Bank. Pondicherry Office: JP INFOTECH, #45, Kamaraj Salai, Thattanchavady, Puducherry -9. Landmark: Next to VVP Nagar Arch. Mobile: (0) 9952649690 , Email: [email protected], web: www.jpinfotech.org Blog: www.jpinfotech.blogspot.com Side-channel analysis (SCA) exploits the information leaked through unintentional outputs (e.g., power consumption) to reveal the secret key of cryptographic modules. The real threat of SCA lies in the ability to mount attacks over small parts of the key and to aggregate information over different encryptions. The threat of SCA can be thwarted by changing the secret key at every run. Indeed, many contributions in the domain of leakage resilient cryptography tried to achieve this goal. However, the proposed solutions were computationally intensive and were not designed to solve the problem of the current cryptographic schemes. In this paper, we propose a generic framework of lightweight key updating that can protect the current cryptographic standards and evaluate the minimum requirements for heuristic SCA-security. Then, we propose a complete solution to protect the implementation of any standard mode of Advanced Encryption Standard. Our solution maintains the same level of SCA-security (and sometimes better) as the state of the art, at a negligible area overhead while doubling the throughput of the best previous work.
Views: 179 jpinfotechprojects
How To Encrypt Or Decrypt File In Kali Linux 2017.3 In Hindi
How To Encrypt Or Decrypt File In Kali Linux 2017.3 In Hindi. Friends,Today In This Video I Have Told How To Encrypt Or Decrypt File In Kali Linux 2017.3 In Hindi Language.Here I Am talking About A Tool Called Cryptr.Its A Simple Shell Utility For Encrypting & Decrypting Files. Encrypt Encryptes file with OpenSSL AES-256 cipher block chaining. Writes an encrypted file out ciphertext appending .aes extension. git clone https://github.com/nodesocket/cryptr.git This Is The Channel About Latest Hackers News,,Computer Science & Technology Videos,Computer Tricks In Hindi,Mobile Phones & Android Tricks And Tips In Hindi Language,Electronic Gadgets Videos. -~-~~-~~~-~~-~- Please Visit To Our Website...http://waystomakemoneyonlineguide.com -~-~~-~~~-~~-~- Want To Make Money? Visit-https://waystomakemoneyonlineguide.com
Views: 154 Hackers News
SHA1 length extension attack on the Secure Filesystem - rhme2 Secure Filesystem (crypto 100)
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: 11321 LiveOverflow
Symmetric encryption
Symmetric encryptionSymmetric encryption algorithms are based on one and the same key used by a sender and a recipient. The information exchange process includes three stages: - a sender sends a key to a recipient; - using this key, the sender encrypts the message and forwards it to the recipient; - the recipient receives the message and decrypts it.A number of factors account for the security level provided by conventional techniques: - Firstly, the encryption algorithm should be reliable enough so that the encrypted message could not be decrypted without the key; - Secondly, the security of the transmitted message should depend on the key only rather than on the algorithm secrecy; - And thirdly, the algorithm should prevent from learning the key even if you know a lot of encrypted/unencrypted pairs.For example, the well-known Caesar cipher is quite easy to decipher, even if you don't know the key. Let me demonstrate you how: - We write a decrypted text; - Then we write the decrypted alphabet under the text; - Then we can read the text going from line to line.However, unlike Caesar cipher, if, instead of a constant shift, we use a variable shift which also changes from message to message, we will get rather a reliable encryption system.This method of encryption is called Vigenère cipher. The shift value is defined by a key word which is usually placed in the beginning of a message. The shift is determined by comparing the key word with the transmitted word. For instance, our key word is LASER. The transmitted word will be as follows:In this event the key will be as follows:Symmetric encryption offers such advantages as high data transmission rate, simple implementation, quite a small key length, and sufficient reliability.Symmetric encryption has one substantial shortcoming. It is useless for authentication as the key is known to both parties.
Views: 1164 ChipDipvideo
Introduction to Side-Channel Power Analysis (SCA, DPA)
A complete introduction to side channel power analysis (also called differential power analysis). This is part of training available that will be available at http://www.ChipWhisperer.io shortly - also in person at Blackhat USA 2016 (see https://www.blackhat.com/us-16/).
Views: 10930 Colin O'Flynn
How to Disable FIPS on Mozilla Firefox Browser
How to Disable FIPS on Mozilla Firefox Browser? 1. Open Mozilla Firefox Browser. 2. Click on "Tools" and Select "Options." 3. Click the "Advanced" tab. 4. Click the Certificates Section. 5. Click the "Security Devices" to Open the "Device Manager" Window. 6. Click "NSS Internal FIPS PKCS #11 Module" and Click the "Disable FIPS" Button. 7. FIPS Should Now be Disabled. 8. Click "OK" to Close "Device Manager." 9. Click ok Again to Apply the Changes. Thank you for watching. Learn How to Make Money Online, Join Us @ http://www.jobs4mind.com This video is only for instructional or educational purpose. Jobs4minds warrants that the content in this video is provided on an "as is" basis with no express or implied warranties whatsoever. Any reference of any third party logos, brand names, trademarks, services marks, trade names, trade dress and copyrights shall not imply any affiliation to such third parties, unless expressly specified. Visit our channel: http://www.youtube.com/user/jobs4minds Subscribe to stay updated: http://www.youtube.com/subscription_center?add_user=jobs4minds Join Us on Facebook: https://www.facebook.com/jobs4minds Follow Us on Twitter: https://twitter.com/jobs4mind Audio Credits: http://www.freesfx.co.uk Video Credits (Free Screen Recorder Software): http://camstudio.org/
NDC2015 - Is it possible to secure micro-controllers within IoT
With the introduction of micro controllers such as the Arduino, Raspberry Pi and BeagleBone – it has become easy to connect sensors to gather information and utilise network connections to build an IoT ecosystem. Strong encryption schemes like RSA/AES/SHA and ecliptic curves cryptography (ECC) have been difficult to introduce due to limited performance and memory capabilities of the micro controllers used and using standard libraries just isn’t feasible – we find that designated and optimised software is the only feasible way forward. http://ardiri.com/blog/iot_day_oslo_feasibility_of_security_on_micro_controllers
Views: 74 Aaron Ardiri
Encryption Decryption Based Project
Click Below to Get this Project with Synopsis, Report, Video Tutorials & Other details :-  http://www.techpacs.com/category/Project/16-119-160/Encryption-Based-Secure-Data-Communication-between-two-Microcontrollers  Subscribe to See Latest Project Videos :-  https://www.youtube.com/subscription_center?add_user=techpacs  Project Description:  This project has built by keeping security as main concern can be applicable at military applications. It uses the basic concept of sending secure data to right destination. Where one can send coded message through a process called encryption done through microcontroller. There may be several receivers that can receive that data but only the desired microcontroller will have the code to decode that message process called decryption. For transmitter circuit IR TRANSMITTER and an optical transmitter are used. And on receiver side IR-RECIVER will detect the signal and send it to decoder circuit then decoder will decode it and send to the all MCU. Which will shows decrypted message on LCD.  To Get More Details: www.techpacs.com Contact Details are:  Mobile No. +91-9056960606, +91-9815216606  Email us at: [email protected]  You will also be Interestd in:  1) Coal Mine Parameter Monitoring and Wireless Alerting System Using Radio Waves - ( http://www.techpacs.com/category/Project/16-119-70/Coal-Mine-Parameter-Monitoring-and-Wireless-Alerting-System-Using-Radio-Waves )  2) MATLAB Based Automated Car Parking Management System Using RFID Cards - ( http://www.techpacs.com/category/Project/16-119-97/MATLAB-Based-Automated-Car-Parking-Management-System-Using-RFID-Cards )  3) Microcontroller Based Automated Smart Metal detection & Alerting System - ( http://www.techpacs.com/category/Project/16-119-46/Microcontroller-Based-Automated-Smart-Metal-detection--Alerting-System )  4) Heart Rate Plotting and monitoring based on bluetooth and android Application - ( http://www.techpacs.com/category/Project/16-119-284/Heart-Rate-Plotting-and-monitoring-based-on-bluetooth-and-android-Application )  5) Color Detection Based Object Sorting Conveyor Mechanism using MATLAB and Image Processing - ( http://www.techpacs.com/category/Project/16-119-113/Color-Detection-Based-Object-Sorting-Conveyor-Mechanism-using-MATLAB-and-Image-Processing )  Other Similar Project Videos:  1) TCP/IP Based Physical Parameter Monitoring System (Temperature, Humidity, Speed Etc) using C#.NET - [ https://www.youtube.com/watch?v=RuWwDGZnay4 ]  2) Microcontroller Based Metro Train Prototype - [ https://www.youtube.com/watch?v=oaond-JcGRs ]  3) Line Follower or Path Tracking Robot - [ https://www.youtube.com/watch?v=1HvcUNy37SI ]  4) Wireless Sensor for Forest Fire Early Detection & Online Remote Monitoring using Fire Sensor - [ https://www.youtube.com/watch?v=7TV2dfJy7NY ]  5) IOT based Artificially Intelligent Self Diagnosing Washing Machine - [ https://www.youtube.com/watch?v=_cpangs_D6U ]  Follow us on:  Facebook Page: https://www.facebook.com/techpacs/  Google Plus: https://plus.google.com/118090314498905972623
Views: 351 TechPacs.com
Crypto Defenses for Real-World System Threats - Kenn White - Ann Arbor
Modern encryption techniques provide several important security properties, well known to most practitioners. Or are they? What are in fact the guarantees of, say, HTTPS TLS cipher suites using authenticated encryption, IPSec vs. SSL VPNs, Property Preserving Encryption, or token vaults? We live in an era of embedded Hardware Security Modules that cost less than $1 in volume, and countless options now exist for encrypting streaming network data, files, volumes, and even entire databases. Let's take a deep dive into the edge of developed practice to discuss real-world threat scenarios to public cloud and IoT data, and look closely at how we can address specific technical risks with our current encryption toolkits. Advanced math not required. Bio: Kenneth White is a security researcher whose work focuses on networks and global systems. He is co-director of the Open Crypto Audit Project (OCAP), currently managing a large-scale audit of OpenSSL on behalf of the Linux Foundation's Core Infrastructure Initiative. Previously, White was Principal Scientist at Washington DC-based Social & Scientific Systems where he led the engineering team that designed and ran global operations and security for the largest clinical trial network in the world, with research centers in over 100 countries. White co-founded CBX Group which provides security services to major organizations including World Health, UNICEF, Doctors without Borders, the US State Department, and BAO Systems. Together with Matthew Green, White co-founded the TrueCrypt audit project, a community-driven initiative to conduct the first comprehensive cryptanalysis and public security audit of the widely used TrueCrypt encryption software. White holds a Masters from Harvard and is a PhD candidate in neuroscience and cognitive science, with applied research in real-time classification and machine learning. His work on network security and forensics and been cited by media including the Wall Street Journal, Forbes, Reuters, Wired and Nature. White is a technical reviewer for the Software Engineering Institute, and publishes and speaks frequently on computational modeling, security engineering, and trust. He tweets @kennwhite.
Views: 838 Duo Security
Codes by Katrina/ How to decrypt Encrypted Trainers
Link to the Sublime Text Editor: https://www.sublimetext.com/3 Link to the Decrypter for the Trainers: https://www.mediafire.com/folder/btsmn2dc7b4qt/Decompiler_CE_Trainer_v1.0 Music is by Taylor Swift and it's called: I Don't Wanna Live Forever
Views: 662 Ryan Ellis
Facts about Encrypting
Facts about Encrypting There are two basic techniques for encrypting information: symmetric encryption (also called secret key encryption) and asymmetric encryption (also called public key encryption.) PGP is often used for signing, encrypting, and decrypting texts, e-mails, files, directories, and whole disk partitions and to increase the security of e-mail communications. Asymmetric encryption uses two related keys (public and private) for data encryption and decryption, and takes away the security risk of key sharing. Symmetric encryption is the oldest and best-known technique. The RSA algorithm encryption and authentication method is the most commonly used encryption method. This video has been brought to you by JSCAPE LLC. As a leading provider of managed file transfer software and networking solutions to businesses and government agencies in more than 54 countries worldwide, JSCAPE provides secure, seamless and reliable file transfer systems for data delivery that meet a variety of audit and regulatory requirements.
Views: 57 J Scape
Extracting Speed Spectrum Hidden Data From Digital Media
Title: Extracting Spread-Spectrum Hidden Data from Digital Media Domain: Networking - Steganography Key Features: 1. We consider the problem of extracting blindly data embedded over a wide band in a spectrum (transform) domain of a digital medium (image, audio, video). We develop a novel multicarrier/ signature iterative generalized least-squares (M-IGLS) core procedure to seek unknown data hidden in hosts via multicarrier spread-spectrum embedding. 2. Neither the original host nor the embedding carriers are assumed available. Experimental studies on images show that the developed algorithm can achieve recovery probability of error close to what may be attained with known embedding carriers and host autocorrelation matrix. 3. We propose the information hiding concept to reduce the risk of using cryptographic algorithms alone. Data hiding techniques embed information into another medium making it imperceptible to others, except for those that are meant to receive the hidden information and are aware of it presence. 4. It focuses on methods of hidden data in which cryptographic algorithms are combined with the information hiding techniques to increase the security of transmitted data. We focus our attention on the blind recovery of secret data hidden in medium hosts via multi-carrier/signature direct-sequence spread-spectrum transform domain embedding. MODULE DESCRIPTION Steganography: Steganography includes the concealment of information within computer files. In digital steganography, electronic communications may include steganographic coding inside of a transport layer, such as a document file, image file, program or protocol Digital steganography can hide confidential data (i.e. secret files) very securely by embedding them into some media data called "vessel data." The vessel data is also referred to as "carrier, cover, or dummy data". In Steganography images used for vessel data. The embedding operation in practice is to replace the "complex areas" on the bit planes of the vessel image with the confidential data. The most important aspect of Steganography is that the embedding capacity is very large. For a 'normal' image, roughly 50% of the data might be replaceable with secret data before image degradation becomes apparent. Multi-Carrier Spread Spectrum Embedding: The technique of spread spectrum may allow partly to fulfill the above requirements. Advantages of spread spectrum techniques are widely known: Immunity against multi-path distortion, no need for fiequency planning, high flexibility and variable data rate transmission. The capability of minimising multiple access interference in direct-sequence code- division-multiple-access system is given by the cross-correlation properties of spreading codes. In the case of multi-path propagation the capability of distinguishing one component fiom thers in the composite received signal is offered by the auto-correlation roperties of the spreading codes. Image encryption and watermarking: The host image is an 8-bit or higher grey level image which must ideally be the same size as the plaintext image or else resized accordingly using the same proportions. Pre-conditioning the cipher and the convolution processes are undertaken using a Discrete Fourier Transform (DFT). The output will include negative floating point numbers upon taking the real component of a complex array. The array must be rectified by adding the largest negative value in the output array to the same array before normalization. For color host images, the binary cipher text can be inserted into one or all of the RGB components. The binary plaintext image should have homogeneous margins to minimize the effects of ringing due to 'edge effects' when processing the data using Fourier transform. Image decryption and extraction: (i) The correlation operation should be undertaken using a DFT. (ii) For color images, the data is decomposed into each RGB component and each 1-bit layer is extracted and correlated with the appropriate cipher. (iii) The output obtained in Step 3 has a low dynamic range and therefore requires to be quantized into an 8-bit image based on floating point numbers within the range max (array)-min (array). For more details contact: E-Mail: [email protected] Purchase The Whole Project Kit for Rs 3000%. Project Kit: • 1 Review PPT • 2nd Review PPT • Full Coding with described algorithm • Video File • Full Document Note: *For bull purchase of projects and for outsourcing in various domains such as Java, .Net, .PHP, NS2, Matlab, Android, Embedded, Bio-Medical, Electrical, Robotic etc. contact us. *Contact for Real Time Projects, Web Development and Web Hosting services. *Comment and share on this video and win exciting developed projects for free of cost. Search Terms: 1. 2017 web mining projects 2. 2017 web mining ieee projects 3. 2017 latest data mining projects
Views: 2366 InnovationAdsOfIndia
[Tutorial] Cracking a 128 bit WEP key
http://liquid-sec.tk/index.php This is the real LiquidSecurityNet Youtube channel you all knew and love, Openfire-Security is FAKE! and have nothing to do with us except stolen channel and name, say "thanks" to that prick Alex Martinz aka evisceration who decided to leave his original LS crew ( which btw brought him into the world of hacking) and go with different crew( Indians) those kind of people are called traitors and in the past they were hanged...the rest is history...soon LS forum will be up and videos will be uploaded here...until we start to make our own videos enjoy some of my hacking videos collection
Views: 207 Liquid-Security.Net
What is PSEUDORANDOM NUMBER GENERATOR? What does PSEUDORANDOM NUMBER GENERATOR mean? PSEUDORANDOM NUMBER GENERATOR meaning - PSEUDORANDOM NUMBER GENERATOR definition - PSEUDORANDOM NUMBER GENERATOR explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. A pseudorandom number generator (PRNG), also known as a deterministic random bit generator (DRBG), is an algorithm for generating a sequence of numbers whose properties approximate the properties of sequences of random numbers. The PRNG-generated sequence is not truly random, because it is completely determined by a relatively small set of initial values, called the PRNG's seed (which may include truly random values). Although sequences that are closer to truly random can be generated using hardware random number generators, pseudorandom number generators are important in practice for their speed in number generation and their reproducibility. PRNGs are central in applications such as simulations (e.g. for the Monte Carlo method), electronic games (e.g. for procedural generation), and cryptography. Cryptographic applications require the output not to be predictable from earlier outputs, and more elaborate algorithms, which do not inherit the linearity of simpler PRNGs, are needed. Good statistical properties are a central requirement for the output of a PRNG. In general, careful mathematical analysis is required to have any confidence that a PRNG generates numbers that are sufficiently close to random to suit the intended use. John von Neumann cautioned about the misinterpretation of a PRNG as a truly random generator, and joked that "Anyone who considers arithmetical methods of producing random digits is, of course, in a state of sin." A PRNG can be started from an arbitrary initial state using a seed state. It will always produce the same sequence when initialized with that state. The period of a PRNG is defined thus: the maximum, over all starting states, of the length of the repetition-free prefix of the sequence. The period is bounded by the number of the states, usually measured in bits. However, since the length of the period potentially doubles with each bit of "state" added, it is easy to build PRNGs with periods long enough for many practical applications. If a PRNG's internal state contains n bits, its period can be no longer than 2n results, and may be much shorter. For some PRNGs, the period length can be calculated without walking through the whole period. Linear Feedback Shift Registers (LFSRs) are usually chosen to have periods of exactly 2n-1. Linear congruential generators have periods that can be calculated by factoring. Although PRNGs will repeat their results after they reach the end of their period, a repeated result does not imply that the end of the period has been reached, since its internal state may be larger than its output; this is particularly obvious with PRNGs with a one-bit output. Most PRNG algorithms produce sequences which are uniformly distributed by any of several tests. It is an open question, and one central to the theory and practice of cryptography, whether there is any way to distinguish the output of a high-quality PRNG from a truly random sequence, knowing the algorithms used, but not the state with which it was initialized. The security of most cryptographic algorithms and protocols using PRNGs is based on the assumption that it is infeasible to distinguish use of a suitable PRNG from use of a truly random sequence. The simplest examples of this dependency are stream ciphers, which (most often) work by exclusive or-ing the plaintext of a message with the output of a PRNG, producing ciphertext. The design of cryptographically adequate PRNGs is extremely difficult, because they must meet additional criteria (see below). The size of its period is an important factor in the cryptographic suitability of a PRNG, but not the only one. A PRNG suitable for cryptographic applications is called a cryptographically secure PRNG (CSPRNG). A requirement for a CSPRNG is that an adversary not knowing the seed has only negligible advantage in distinguishing the generator's output sequence from a random sequence. In other words, while a PRNG is only required to pass certain statistical tests, a CSPRNG must pass all statistical tests that are restricted to polynomial time in the size of the seed. Though a proof of this property is beyond the current state of the art of computational complexity theory, strong evidence may be provided by reducing the CSPRNG to a problem that is assumed to be hard, such as integer factorization. In general, years of review may be required before an algorithm can be certified as a CSPRNG.
Views: 2505 The Audiopedia
Ciphertext In cryptography, ciphertext or cyphertext is the result of encryption performed on plaintext using an algorithm, called a cipher.Ciphertext is also known as encrypted or encoded information because it contains a form of the original plaintext that is unreadable by a human or computer without the proper cipher to decrypt it. =======Image-Copyright-Info======= Image is in public domain Author-Info: National Archives Image Source: https://en.wikipedia.org/wiki/File:Zimmermann-telegramm-offen.jpg =======Image-Copyright-Info======== -Video is targeted to blind users Attribution: Article text available under CC-BY-SA image source in video https://www.youtube.com/watch?v=ncxzmd3TF5c
Views: 100 WikiAudio
Please give us a THUMBS UP if you like our videos!!! Source:http://en.wikipedia.org/wiki/Ciphertext In cryptography, ciphertext (or cyphertext) is the result of encryption performed on plaintext using an algorithm, called a cipher. Ciphertext is also known as encrypted or encoded information because it contains a form of the original plaintext that is unreadable by a human or computer without the proper cipher to decrypt it. Decryption, the inverse of encryption, is the process of turning ciphertext into readable plaintext. Ciphertext is not to be confused with codetext because the latter is a result of a code, not a cipher.
Views: 215 Wikivoicemedia
Secret sharing
Secret sharing Secret sharing (also called secret splitting) refers to methods for distributing a secret amongst a group of participants, each of whom is allocated a share of the secret.The secret can be reconstructed only when a sufficient number, of possibly different types, of shares are combined together; individual shares are of no use on their own. =======Image-Copyright-Info======== License: Creative Commons Attribution-Share Alike 4.0 (CC BY-SA 4.0) LicenseLink: http://creativecommons.org/licenses/by-sa/4.0 Author-Info: Fred the Oyster Image Source: https://en.wikipedia.org/wiki/File:Secretsharing_3-point.svg =======Image-Copyright-Info======== -Video is targeted to blind users Attribution: Article text available under CC-BY-SA image source in video https://www.youtube.com/watch?v=4b8tlv56E9w
Views: 167 WikiAudio
Side Channel Analysis of Cryptographic Implementations
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: 5690 nptelhrd
AES Overview, Including How to Use AES PcLink
In this webinar, you will learn how to prepare, file and troubleshoot your export transaction in the Automated Export System. You will learn how to accurately file your export transaction, when to file it, how to get your export number and what to do with it. For more information, visit: http://export.gov/webinars/eg_main_039887.asp June 18, 2011
Cloning 3G/4G SIM Cards With A PC And An Oscilloscope: Lessons Learned In Physical Security
by Yu Yu Recently, documents leaked from Edward Snowden alleged that NSA and GCHQ had stolen millions of SIM card encryption keys from one of the world's largest chip manufacturers. This incident draws the public attention to the longstanding concern for the mobile network security. Despite that various attacks against 2G (GSM) algorithms (COMP-128, A5) were found in literature, no practical attacks were known against 3G/4G (UMTS/LTE) SIM cards. 3G/4G SIM cards adopt a mutual authentication algorithm called MILENAGE, which is in turn based on AES-128, a mathematically secure block cipher standardized by NIST. In addition to the encryption key, MILENAGE also uses nearly a dozen of 128-bit secrets to further obfuscate the algorithm. In this presentation, we show how to amount differential power analysis that recovers encryption key and other secrets in a divide-and-conquer manner within a few (10 to 40) minutes, allowing for SIM cards cloning. Our experiments succeeded on eight 3G/4G SIM cards from a variety of operators and manufacturers. The measurement setup of our experiment mainly consists of an oscilloscope (for power acquisition), an MP300-SC2 protocol analyzer (for interception of the messages), a self-made SIM card reader, and a PC (for signal processing and cryptanalysis). We finish the presentation by showing what happens to a 3G/4G SIM card and its duplicate when receiving texts/calls at the same time.
Views: 24806 Black Hat
Managing encryption of data in the cloud (Google Cloud Next '17)
Can management of encryption keys be easier in the cloud than on-premise? During this video, Maya Kaczorowski discusses the continuum of encryption options available, from encryption of data at rest by default, to Cloud Key Management System, to Customer Supplied Encryption Keys. You'll learn how our encryption tools allow management of your own keys, including generation, rotation and destruction of those keys. She also shares best practices for managing and securing secrets. Missed the conference? Watch all the talks here: https://goo.gl/c1Vs3h Watch more talks about Infrastructure & Operations here: https://goo.gl/k2LOYG
Views: 6805 Google Cloud Platform
An introduction to Encrypted Media Extensions (EME)
Slides featured are at http://goo.gl/Le9VQ. Encrypted Media Extensions (EME) is a JavaScript API that enables web applications to interact with DRM systems, in order to allow playback of encrypted media. In this Google Developers Live session, John Luther (EME Product Manager) and Sam Dutton (Chrome Developer Advocate) give an introduction to the APIs, and discuss the technical challenges involved.
Views: 14251 Google Developers
This video is part of the Udacity course "Intro to Information Security". Watch the full course at https://www.udacity.com/course/ud459
Views: 16254 Udacity
Classical Cryptosystems
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: 14134 nptelhrd
Overview on Modern Cryptography
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: 34741 nptelhrd
Overview on S-Box Design Principles
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: 25593 nptelhrd
Discrete Logarithm Problem
Discrete Logarithm Problem - modular arithmetic
Views: 48222 Art of the Problem
Building a NaCl app
Native Client applications can now be developed and debugging in the browser online or offline! Take a tour of our sandboxed tools including: curl, vim, python, gcc, gdb, git!
Views: 7516 Google Developers
Generating Key Pairs
This video is part of the Udacity course "Configuring Linux Web Servers". Watch the full course at https://www.udacity.com/course/ud299
Views: 1163 Udacity
Block Cipher Standards (DES)
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: 29589 nptelhrd
Communication between two Arduino's using AES-128bit.
Two devices authenticate and communicate using AES encryption. Corresponding messages displayed on to the LCD 16X2.
Views: 115 A Satyanarayana

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