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Search results “Identifier-based public key cryptography standards”
cryptography - Public Key Infrastructure PKI
 
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Cryptography To get certificate subscribe: https://www.coursera.org/learn/cryptography ======================== Playlist URL: https://www.youtube.com/playlist?list=PL2jykFOD1AWb07OLBdFI2QIHvPo3aTTeu ============================ Youtube channel: https://www.youtube.com/user/intrigano ============================ https://scsa.ge/en/online-courses/ https://www.facebook.com/cyberassociation/
Views: 594 intrigano
Module 6: X.509 Digital Certificate
 
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Certification Authority - an authority in a network that issues and manages security credentials and public keys for message encryption References: X.509 Digital Certification. (n.d.). Retrieved February 18, 2015, from https://msdn.microsoft.com/en-us/library/windows/desktop/aa388452(v=vs.85).aspx
Views: 29425 Simple Security
What is HOST IDENTITY PROTOCOL? What does HOST IDENTITY PROTOCOL mean?
 
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What is HOST IDENTITY PROTOCOL? What does HOST IDENTITY PROTOCOL mean? HOST IDENTITY PROTOCOL meaning - HOST IDENTITY PROTOCOL definition - HOST IDENTITY PROTOCOL explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ The Host Identity Protocol (HIP) is a host identification technology for use on Internet Protocol (IP) networks, such as the Internet. The Internet has two main name spaces, IP addresses and the Domain Name System. HIP separates the end-point identifier and locator roles of IP addresses. It introduces a Host Identity (HI) name space, based on a public key security infrastructure. The Host Identity Protocol provides secure methods for IP multihoming and mobile computing. In networks that implement the Host Identity Protocol, all occurrences of IP addresses in applications are eliminated and replaced with cryptographic host identifiers. The cryptographic keys are typically, but not necessarily, self-generated. The effect of eliminating IP addresses in application and transport layers is a decoupling of the transport layer from the internetworking layer (Internet Layer) in TCP/IP. HIP was specified in the IETF HIP working group. An Internet Research Task Force (IRTF) HIP research group looks at the broader impacts of HIP. The working group is chartered to produce Requests for Comments on the "Experimental" track, but it is understood that their quality and security properties should match the standards track requirements. The main purpose for producing Experimental documents instead of standards track ones are the unknown effects that the mechanisms may have on applications and on the Internet in the large.
Views: 510 The Audiopedia
NDSS 2018 - Mind Your Keys? A Security Evaluation of Java Keystores
 
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SESSION 2B: Crypto: 01 Mind Your Keys? A Security Evaluation of Java Keystores SUMMARY Cryptography is complex and variegate and requires to combine different algorithms and mechanisms in nontrivial ways. This complexity is often source of vulnerabilities. Secure key management is one of the most critical aspects, since leaking a cryptographic key vanishes any advantage of using cryptography. In this paper we analyze Java keystores, the standard way to manage and securely store keys in Java applications. We consider seven keystore implementations from Oracle JDK and Bouncy Castle, a widespread cryptographic library. We describe, in detail, how the various keystores enforce confidentiality and integrity of the stored keys through password based cryptography and we show that many of the implementations do not adhere to state-of-the-art cryptographic standards. We investigate the resistance to offline attacks and we show that, for non-compliant keystores, brute-forcing can be up to three orders of magnitude faster with respect to the most compliant keystore. Additionally, when an attacker can tamper with the keystore file, some implementations are vulnerable to denial of service attacks or, in the worst case, arbitrary code execution. Finally we discuss the fixes implemented by Oracle and Bouncy Castle developers following our responsible disclosure. SLIDES http://wp.internetsociety.org/ndss/wp-content/uploads/sites/25/2018/03/NDSS2018_02B-1_Focardi_Slides.pdf PAPER https://www.ndss-symposium.org/wp-content/uploads/sites/25/2018/02/ndss2018_02B-1_Focardi_paper.pdf AUTHORS Riccardo Focardi (Universita Ca’ Foscari and Cryptosense) Francesco Palmarini (Universita Ca’ Foscari and Yarix) Marco Squarcina (Universita Ca’ Foscari and Cryptosense) Graham Steel (Cryptosense) Mauro Tempesta (Universita Ca’ Foscari) Network and Distributed System Security (NDSS) Symposium 2018, 18-21 February 2018, Catamaran Resort Hotel & Spa in San Diego, California. https://www.ndss-symposium.org/ndss2018/programme/ ABOUT NDSS The Network and Distributed System Security Symposium (NDSS) fosters information exchange among researchers and practitioners of network and distributed system security. The target audience includes those interested in practical aspects of network and distributed system security, with a focus on actual system design and implementation. A major goal is to encourage and enable the Internet community to apply, deploy, and advance the state of available security technologies. https://www.ndss-symposium.org/ #NDSS #NDSS18 #NDSS2018 #InternetSecurity
Views: 253 NDSS Symposium
Key-Policy Attribute-Based Encryption with Equality Test in Cloud Computing
 
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Including Packages ======================= * Base Paper * Complete Source Code * Complete Documentation * Complete Presentation Slides * Flow Diagram * Database File * Screenshots * Execution Procedure * Readme File * Addons * Video Tutorials * Supporting Softwares Specialization ======================= * 24/7 Support * Ticketing System * Voice Conference * Video On Demand * * Remote Connectivity * * Code Customization ** * Document Customization ** * Live Chat Support * Toll Free Support * Call Us:+91 967-774-8277, +91 967-775-1577, +91 958-553-3547 Shop Now @ https://myprojectbazaar.com Get Discount @ https://goo.gl/dhBA4M Chat Now @ http://goo.gl/snglrO Visit Our Channel: https://www.youtube.com/user/myprojectbazaar Mail Us: [email protected]
Views: 124 Elysium pro
Hashing Algorithms and Security - Computerphile
 
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Audible free book: http://www.audible.com/computerphile Hashing Algorithms are used to ensure file authenticity, but how secure are they and why do they keep changing? Tom Scott hashes it out. More from Tom Scott: http://www.youtube.com/user/enyay and https://twitter.com/tomscott http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Pigeon Sound Effects courtesy of http://www.freesfx.co.uk/ Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels
Views: 776427 Computerphile
Paper key: 4.096 bits RSA key in a Datamatrix 2D barcode
 
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From http://www.safeberg.com. Can online backup be secure? Safeberg devised a rather large key (4096 bits RSA) that can be printed on paper. This video shows why.
Views: 11883 safeberg
Public-key cryptography
 
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Public-key cryptography, also known as asymmetric cryptography, is a class of cryptographic algorithms which require two separate keys, one of which is secret (or private) and one of which is public. Although different, the two parts of this key pair are mathematically linked. The public key is used to encrypt plaintext or to verify a digital signature; whereas the private key is used to decrypt ciphertext or to create a digital signature. The term "asymmetric" stems from the use of different keys to perform these opposite functions, each the inverse of the other -- as contrasted with conventional ("symmetric") cryptography which relies on the same key to perform both. Public-key algorithms are based on mathematical problems which currently admit no efficient solution that are inherent in certain integer factorization, discrete logarithm, and elliptic curve relationships. It is computationally easy for a user to generate their own public and private key-pair and to use them for encryption and decryption. The strength lies in the fact that it is "impossible" (computationally infeasible) for a properly generated private key to be determined from its corresponding public key. Thus the public key may be published without compromising security, whereas the private key must not be revealed to anyone not authorized to read messages or perform digital signatures. Public key algorithms, unlike symmetric key algorithms, do not require a secure initial exchange of one (or more) secret keys between the parties. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 770 Audiopedia
Public-key cryptography
 
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Public-key cryptography, also known as asymmetric cryptography, is a class of cryptographic algorithms which require two separate keys, one of which is secret and one of which is public. Although different, the two parts of this key pair are mathematically linked. The public key is used to encrypt plaintext or to verify a digital signature; whereas the private key is used to decrypt ciphertext or to create a digital signature. The term "asymmetric" stems from the use of different keys to perform these opposite functions, each the inverse of the other -- as contrasted with conventional cryptography which relies on the same key to perform both. This video targeted to blind users. Attribution: Article text available under CC-BY-SA Public domain image source in video
Views: 2099 encyclopediacc
web crypto tutorial  aes  encryption decryption
 
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AES Encryption/Decryption using Web Cryptography API Reference: https://8gwifi.org/docs/window-crypto-aes.jsp web crypto api tutorial The Crypto interface represents an interface to general purpose cryptographic functionality including a cryptographically strong pseudo-random number generator seeded with truly random values. The AES Encryption/Decryption Mode The AES-CTR algorithm identifier is used to perform encryption and decryption using AES in Counter mode. The "AES-CBC" algorithm identifier is used to perform encryption and decryption using AES in Cipher Block Chaining mode The "AES-GCM" algorithm identifier is used to perform authenticated encryption and decryption using AES in Galois/Counter Mode mode The "AES-KW" algorithm identifier is used to perform key wrapping using AES,
Views: 132 Zariga Tongy
The Lava Lamps That Help Keep The Internet Secure
 
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At the headquarters of Cloudflare, in San Francisco, there's a wall of lava lamps: the Entropy Wall. They're used to generate random numbers and keep a good bit of the internet secure: here's how. Thanks to the team at Cloudflare - this is not a sponsored video, they just had interesting lava lamps! There's a technical rundown of the system on their blog here: https://blog.cloudflare.com/lavarand-in-production-the-nitty-gritty-technical-details Edited by Michelle Martin, @mrsmmartin I'm at http://tomscott.com on Twitter at http://twitter.com/tomscott on Facebook at http://facebook.com/tomscott and on Snapchat and Instagram as tomscottgo
Views: 1342622 Tom Scott
IoT Device Identification for O-MI/O-DF
 
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Paper info: "MeDI: Measurement-based Device Identification Framework for Internet of Things" Narges Yousefnezhad, Manik Madhikermi, Kary Främling Department of Computer Science, Aalto University, Espoo, Finland Abstract—IoT systems may provide information from different sensors that may reveal potentially confidential data, such as a person’s presence or not. The primary question to address is how we can identify the sensors and other devices in a reliable way before receiving data from them and using or sharing it. In other words, we need to verify the identity of sensors and devices. A malicious device could claim that it is the legitimate sensor and trigger security problems. For instance, it might send false data about the environment, harmfully affecting the outputs and behavior of the system. For this purpose, using only primary identity values such as IP address, MAC address, and even the public-key cryptography key pair is not enough since IPs can be dynamic, MACs can be spoofed, and cryptography key pairs can be stolen. Therefore, the server requires supplementary security considerations such as contextual features to verify the device identity. This paper presents a measurement-based method to detect and alert false data reports during the reception process by means of sensor behavior. As a proof of concept, we develop a classification-based methodology for device identification, which can be implemented in a real IoT scenario. Description (more information): The reference implementation (Otaniemi3D) of open messaging standards (O-MI/O-DF) is developed by Aalto University and an example scenario (EV charging) is provided as a proof of concept. This research paper provides device-side identification using sensor measurements and classification methods.
Overview on Modern Cryptography
 
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Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 36038 nptelhrd
What's new with sign up and sign in on the web (Google I/O '18)
 
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Secure, frictionless, easy to implement – choose all three! This session will cover best practices and introduce technologies (WebAuthn, One-tap Sign-up, reCAPTCHA V3) that developers can leverage to keep users' data safe, streamline users’ onboarding experience, and prevent creation of fake accounts. Rate this session by signing-in on the I/O website here → https://goo.gl/6yKkyy Watch more Chrome and Web sessions from I/O '18 here → https://goo.gl/5fgXhX See all the sessions from Google I/O '18 here → https://goo.gl/q1Tr8x Subscribe to the Chrome Developers channel → http://goo.gl/LLLNvf #io18
19. Anonymous Communication
 
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MIT 6.858 Computer Systems Security, Fall 2014 View the complete course: http://ocw.mit.edu/6-858F14 Instructor: Nick Mathewson In this lecture, Nick Mathewson delivers a guest lecture on Tor and Anonymous communication. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 8636 MIT OpenCourseWare
Sovrin (Evernym) ICO Review
 
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In this video, I review Sovrin's upcoming initial coin offering. In my point of view, I am waiting for the market to correct, I am keeping an eye on this ICO. They have all-star team. This is my personal opinion, I am not giving biased recommendations. I am not a financial adviser. Discuss with your advisers before investing in ICOs. https://www.evernym.com/ Humanity deserves digital identity that is permanent, portable, private and completely secure; in other words: self-sovereign. Shortcomings in the internet’s original design made this impossible, at a cost of trillions each year. Today, the invention of distributed ledger technology makes self-sovereign digital identity a possibility for the first time. Now that self-sovereign identity is possible, it’s inevitable. And it’s going to change everything. Join My Telegram Mastermind: http://ianbalina.com/mastermind Website: http://ianbalina.com Instagram: https://www.instagram.com/diaryofamademan/ Twitter: https://twitter.com/diaryofamademan Snapchat: https://www.snapchat.com/add/diaryofamademan #Blockchain #Cryptocurrency #Bitcoin #Ethereum DIARY OF A MADE MAN LLC IS NOT PROVIDING INDIVIDUALLY TAILORED INVESTMENT ADVICE AND IS NOT TAKING SUBSCRIBERS PERSONAL CIRCUMSTANCES INTO CONSIDERATION WHEN DISCUSSING INVESTMENTS IN ICOS. DIARY OF A MADE MAN LLC IS NOT REGISTERED TO PROVIDE INVESTMENT ADVICE AND ARE SIMPLY PROVIDING AN OPINION, GIVING THEIR PARTICULAR EXPERIENCE, WHEN DISCUSSING ICOS. INFORMATION CONTAINED HEREIN IS NOT AN OFFER OR SOLICITATION TO BUY, HOLD, OR SELL ANY SECURITY. DIARY OF A MADE MAN LLC IS NOT A BROKER-DEALER OR FINANCIAL ADVISER AND IS NOT AFFILIATED WITH AN INVESTMENT ADVISORY FIRM. DIARY OF A MADE MAN LLC DOES NOT ENGAGE IN ACTIVITIES THAT WOULD REQUIRE SUCH REGISTRATION. DIARY OF A MADE MAN LLC AND/OR ANY COMPANIES AFFILIATED WITH DIARY OF A MADE MAN LLC, ARE NOT RESPONSIBLE FOR ANY GAINS OR LOSSES THAT RESULT FROM THE OPINIONS EXPRESSED HEREIN. DIARY OF A MADE MAN LLC MAKES NO REPRESENTATION AS TO THE COMPLETENESS, ACCURACY, OR TIMELINESS OF THE MATERIAL PROVIDED AND ALL MATERIALS ARE SUBJECT TO CHANGE WITHOUT NOTICE. FOR THE FULL DISCLAIMER, DISCLOSURE, PRIVACY POLICY, AND TERMS OF SERVICE FOR USE OF THE SERVICES, PLEASE VISIT THE WEBSITE: WWW.IANBALINA.COM. THE ICOS DISCUSSED HEREIN HAVE NOT BEEN REVIEWED BY THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES REGULATORY AUTHORITY. FURTHERMORE, THE FOREGOING AUTHORITIES HAVE NOT CONFIRMED THE ACCURACY OR DETERMINED THE ADEQUACY OF THE ICO OFFERING DOCUMENTS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. THE ICOS IDENTIFIED HEREIN MAY CONSTITUTE SECURITIES PURSUANT TO FEDERAL AND STATE SECURITIES LAWS AND MAY NOT BE APPROPRIATE FOR, OR OFFERED TO, INVESTORS RESIDING IN THE UNITED STATES. IN MAKING AN INVESTMENT DECISION, INVESTORS MUST RELY ON THEIR OWN EXAMINATION OF THE PERSON OR ENTITY ISSUING THE ICO AND THE TERMS OF THE OFFERING, INCLUDING THE MERITS AND RISKS INVOLVED. INVESTMENT IN ICOS INVOLVES A HIGH DEGREE OF RISK AND SHOULD BE CONSIDERED ONLY BY PERSONS WHO CAN AFFORD TO SUSTAIN A LOSS OF THEIR ENTIRE INVESTMENT. INVESTORS IN ICOS SHOULD CONSULT THEIR FINANCIAL ADVISER BEFORE INVESTING IN ICOS. THE SECURITIES AND EXCHANGE COMMISSION HAS WARNED INVESTORS RESIDING IN THE UNITED STATES THAT ICOS MAY CONSTITUTE SECURITIES, AND BY INVESTING IN ICOS, INVESTORS MAY BE PURCHASING UNREGISTERED SECURITIES OFFERINGS. US INVESTORS WHO INVEST IN MAY BE UNABLE TO RECOVER ANY LOSSES SUSTAINED IN THE EVENT OF FRAUD OR THEFT. Disclosures: https://ianbalina.com/pages/transparency
Views: 8536 Ian Balina
SecuRED Swipe Reader
 
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SecuRED is a PCI SRED (Secure Reading Exchange of Data) Certified magnetic stripe card reader. This intelligent reader, not only encrypts payment card data as it swiped through the device, but also provides the physical security and tamper resistance needed to achieve PCI SRED standards. ID TECH’s SecuRED allows customers the flexibility to choose a decryption party right for them and is needed for companies looking to certify a P2PE solution.
Views: 475 ID TECH Products
Encryption Part II: Security on the Web 7
 
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How authentication works, including why passwords are a bad solution and how they can be improved with Multi-Factor Authentication, but can't and shouldn't be used with "security questions." We also look at why OAuth is an imperfect solution at best, and we finish off with a look at a new protocol that may obsolete passwords entirely. Web hosting site down after breach of 13 million plaintext passwords https://nakedsecurity.sophos.com/2015/10/30/webhosting-company-loses-13m-plaintext-passwords/ Remember Uncrackable Passwords With Your Fingers http://www.escapistmagazine.com/news/view/118622-Remember-Uncrackable-Passwords-With-Your-Fingers Revolutionizing Website Login and Authentication with SQRL https://vimeo.com/112444120 SQRL Reference Implementation (Windows) https://www.grc.com/dev/sqrl/ SQRL Login Demonstration https://www.grc.com/sqrl/demo.htm The essential SQRL concept https://www.youtube.com/watch?v=U4utxPQgKbg
Views: 3096 Shane Killian
Hyperledger Seattle Meetup - November 6, 2018
 
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Video from the November 6 Hyperledger Seattle Meetup hoster by Drummond Reed, Chief Trust Officer of Evernym, Inc., "Governance Frameworks: Business, Legal, and Technical Policies for Blockchains" This presentation is about the Sovrin Governance Framework V2, the governance framework for the Sovrin blockchain as a global public utility for self-sovereign identity, as an example of how governance frameworks are a powerful new tool for adapting blockchains to real world business, legal, and technical requirements. You can join the group here: https://www.meetup.com/Hyperledger-Seattle-Chapter/
Views: 105 Hyperledger
What is Raven Coin? How to mine RVN? Most profitable coin to mine!
 
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Mine Raven Coin with Mining Program and your NVIDIA GPU. https://miningprogram.com Ravencoin Roadmap Phase 1 - Complete Ravencoin (RVN) is a Proof of Work coin built on the Bitcoin UTXO model. As with other Bitcoin derivatives, RVN coins are distributed to persons augmenting the Raven network by mining Raven. x1000 coin distribution (21 Billion Total) 10x faster blocks (1 per minute) In app CPU mining ~1.4 Day difficulty adjustment (2016 blocks) Addresses start with R... for regular addresses, or r... for multisig Network Port: 8767 RPC Port: 8766 Phase 2 - Assets (in progress) ASIC Resistance ASIC Resistance - A published commitment to continual attempts at ASIC resistance. If ASICs are created for x16r, then we will, at a specific block number, modify one of the algorithms to add Equihash, EthHash or similar efforts to increase the resistance to ASIC miners for Raven. Asset Support Ravencoin will be a hard fork that extends Raven to include the ability to issue and transfer assets. The expected release of asset capabilities will be approximately seven months after the release of RVN. Raven will be extended to allow issuing, reissuing, and transfer of assets. Assets can be reissuable or limited to a set supply at the point of issuance. The cost to create assets will be 500 RVN to create any qty of an asset. Each asset name must be unique. Asset names will be limited to A-Z and 0-9, '' and '.' and must be at least three characters long. The '.' and the '' cannot be the first, or the last character, or be consecutive. The RVN used to issue assets will be sent to a burn address, which will reduce the amount of RVN available. Asset transfers require the standard RVN transaction fees for transfer from one address to another. Metadata Metadata about the token can be stored in IPFS. Initially this cannot be changed. If there is a demand, the system can be updated to allow updating the metadata by the token issuer. Rewards Reward capabilities will be added to allow payment (in RVN) to all holders of an asset. Payments of RVN would be distributed to all asset holders pro rata. This is useful for paying dividends, dividing payments, or rewarding a group of token holders. Example: A small software company issues an asset GAMECO that represents a share of the project. GAMECO tokens can be traded with others. Once the software company profits, those profits can be distributed to all holders of GAMECO by sending the profits (via RVN) to all holders of GAMECO. Block Size Raven may increase the blocksize from 1 MB to X MB to allow for more on-chain transactions. Phase 3 - Rewards Rewards allow payment in RVN to asset holders. Phase 4 - Unique Assets Once created, assets can be made unique for a cost of 5 RVN. Only non-divisible assets can be made unique. This moves an asset to a UTXO and associates a unique identifier with the txid. From this point the asset can be moved from one address to another and can be traced back to its origin. Only the issuer of the original asset can make an asset unique. The costs to make unique assets will be sent to a burn address. Some examples of unique assets: Imagine that an art dealer issues the asset named ART. The dealer can then make unique ART assets by attaching a name or a serialized number to each piece of art. These unique tokens can be transferred to the new owner along with the artwork as a proof of authenticity. The tokens ART:MonaLisa and ART:VenusDeMilo are not fungible and represent distinct pieces of art. A software developer can issue the asset with the name of their software ABCGAME, and then assign each ABCGAME token a unique id or license key. The game tokens could be transferred as the license transfers. Each token ABCGAME:398222 and ABCGAME: are unique tokens. In game assets. A game ZYX_GAME could create unique limited edition in-game assets that are owned and used by the game player. Example: ZYX_GAME:Sword005 and ZYX_GAME:Purse RVN based unique assets can be tied to real world assets. Create an asset named GOLDVAULT. Each gold coin or gold bar in a vault can be serialized and audited. Associated unique assets GOLDVAULT:444322 and GOLDVAULT:555994 can be created to represent the specific assets in the physical gold vault. The public nature of the chain allows for full transparency. Phase 5 - Messaging Messaging to token holders by authorized senders will be layered on top of the Phase 3 unique assets. See KAAAWWW Protocol for additional information. Phase 6 - Voting Voting will be accomplished by creating and distributing parallel tokens to token holders. These tokens can be sent to RVN addresses to record a vote.
Views: 156 BLOCKEYED
Analyzing the Blocky Logic Puzzle  - Pwn Adventure 3
 
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Part 13: We start looking into another challenge, Blocky's Revenge. I failed to reverse engineer this in the client, but had some success with the network packets. 🌴 Playlist: https://www.youtube.com/playlist?list=PLhixgUqwRTjzzBeFSHXrw9DnQtssdAwgG training_data: https://raw.githubusercontent.com/LiveOverflow/PwnAdventure3/master/tools/blocky/training_data to win these output bits have to be 0: [119,96,14,123,128,140,136,148,145,158,154,167,163,160,173] -=[ 🔴 Stuff I use ]=- → Microphone:* https://amzn.to/2LW6ldx → Graphics tablet:* https://amzn.to/2C8djYj → Camera#1 for streaming:* https://amzn.to/2SJ66VM → Lens for streaming:* https://amzn.to/2CdG31I → Connect Camera#1 to PC:* https://amzn.to/2VDRhWj → Camera#2 for electronics:* https://amzn.to/2LWxehv → Lens for macro shots:* https://amzn.to/2C5tXrw → Keyboard:* https://amzn.to/2LZgCFD → Headphones:* https://amzn.to/2M2KhxW -=[ ❤️ Support ]=- → per Video: https://www.patreon.com/join/liveoverflow → per Month: https://www.youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join -=[ 🐕 Social ]=- → Twitter: https://twitter.com/LiveOverflow/ → Website: https://liveoverflow.com/ → Subreddit: https://www.reddit.com/r/LiveOverflow/ → Facebook: https://www.facebook.com/LiveOverflow/ -=[ 📄 P.S. ]=- All links with "*" are affiliate links. LiveOverflow / Security Flag GmbH is part of the Amazon Affiliate Partner Programm. #CTF #PwnAdventure
Views: 36666 LiveOverflow
DEF CON 24 - Jake Kambic - Cunning with CNG: Soliciting Secrets from Schannel
 
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Secure Channel (Schannel) is Microsoft's standard SSL/TLS Library underpinning services like RDP, Outlook, Internet Explorer, Windows Update, SQL Server, LDAPS, Skype and many third party applications. Schannel has been the subject of scrutiny in the past several years from an external perspective due to reported vulnerabilities, including a RCE. What about the internals? How does Schannel guard its secrets? This talk looks at how Schannel leverages Microsoft's CryptoAPI-NG (CNG) to cache the master keys, session keys, private and ephemeral keys, and session tickets used in TLS/SSL connections. It discusses the underlying data structures, and how to extract both the keys and other useful information that provides forensic context about connection. This information is then leveraged to decrypt session that use ephemeral cipher suites, which don't rely on the private key for decryption. Information in the cache lives for at least 10 hours by default on modern configurations, storing up to 20,000 entries for client and server each. This makes it forensically relevant in cases where other evidence of connection may have dissipated. Bio: Jake Kambic is a DFIR researcher and network penetration tester
Views: 1347 DEFCONConference
Blockchain Interview Questions and Answers | Blockchain Technology | Blockchain Tutorial | Edureka
 
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** Blockchain Training : https://www.edureka.co/blockchain-training ** This Edureka's Blockchain video consists of the frequently asked Blockchain Interview Questions which will help you in the preparation of Blockchain Interviews. Below are the topics covered in this session: 1. Blockchain Market Trends 2. General Blockchain Interview Questions 3. Advanced Blockchain Interview Questions Here is the link to the Blockchain blog series: https://goo.gl/DPoAHR Check out our Blockchain Tutorial Playlist: http://bit.ly/2PZb8fd Subscribe to our channel to get video updates. Hit the subscribe button above. Facebook: https://www.facebook.com/edurekaIN/ Twitter: https://twitter.com/edurekain LinkedIn: https://www.linkedin.com/company/edureka #Blockchain #Blockchaintutorial #Blockchainonlinetraining #Blockchainforbeginners #BlockchainInterviewQuestions How it Works? 1. This is a 5 Week Instructor led Online Course, 30 hours of assignment and 20 hours of project work 2. We have a 24x7 One-on-One LIVE Technical Support to help you with any problems you might face or any clarifications you may require during the course. 3. At the end of the training you will be working on a real time project for which we will provide you a Grade and a Verifiable Certificate! - - - - - - - - - - - - - - - - - About the Course Edureka's Blockchain Course is designed to introduce you to the concept of Blockchain and explain the fundamentals of blockchain and bitcoin. Blockchain course will provide an overview of the structure and mechanism of blockchain. As a beginner, you will be learning the importance of consensus in transactions, how transactions are stored on blockchain, history of bitcoin and how to use bitcoin. Furthermore, you will be taught about the Ethereum platform and its programming language. You will setup your own private blockchain environment using Ethereum. Also, you will develop a smart contract on private Ethereum blockchain and will be deploying the contract from web and console. The course is fed with various use-cases and examples, which makes the learning more interesting. After completing this Course, you should be able to: 1. Comprehend the cryptography and cryptocurrency concepts 2. Encompass the concept of blockchain 3. Understand the importance of blockchain technology 4. Have a deep insight into bitcoin and its network 5. Perceive, how bitcoin transactions are validated by miners 6. Create and use bitcoin account effectively 7. Understand Ethereum blockchain 8. Learn Solidity: Prominent language to develop smart contracts 9. Deploy your private blockchain on web where you can visually see your chains 10. Send transactions between nodes 11. Develop more than one nodes on same blockchain 12. Making your own cryptocurrency 13. Discuss the compelling use-cases of the blockchain 14. Interpret the prospects of blockchain. 15. Assess, how blockchain can improve your business standards. ----------------------------------- Who should go for this course? Anyone having basic programming knowledge and has a zeal to learn new technology can take up the course. Students and professionals aspiring to make a career in the Blockchain technology should opt for the course. ----------------------------------- Why learn Blockchain? Blockchain is a revolutionary technology. It is an ordered back linked-list data structure of blocks of transactions stored in a decentralized peer-to-peer network. It is the underlying infrastructure for bitcoin, a popular cryptocurrency. In near future, many companies will be adopting blockchain technologies for trading publicly. Apart from bitcoin, it can be used for a wide variety of applications such as tracking ownership, digital assets, physical assets, or voting rights. It can also store and run computer code called ‘smart contracts’. However, blockchain is still new and the communities are still exploring the best ways in which it can be used. For more information, Please write back to us at [email protected] or call us at IND: 9606058406 / US: 18338555775 (toll free).
Views: 7366 edureka!
What is BGP HIJACKING? What does BGP HIJACKING mean? BGP HIJACKING meaning & explanation
 
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What is BGP HIJACKING? What does BGP HIJACKING mean? BGP HIJACKING meaning - BGP HIJACKING definition - BGP HIJACKING explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. BGP hijacking (sometimes referred to as prefix hijacking, route hijacking or IP hijacking) is the illegitimate takeover of groups of IP addresses by corrupting Internet routing tables maintained using the Border Gateway Protocol (BGP). The Internet is a global network in enabling any connected host, identified by its unique IP address, to talk to any other, anywhere in the world. This is achieved by passing data from one router to another, repeatedly moving each packet closer to its destination, until it is safely delivered. To do this, each router must be regularly supplied with up-to-date routing tables. At the global level, individual IP addresses are grouped together into prefixes. These prefixes will be originated, or owned, by an autonomous system (AS) and the routing tables between ASes are maintained using the Border Gateway Protocol (BGP). A group of networks that operate under a single external routing policy is known as an autonomous system. For example, Sprint, Verizon, and AT&T each are an AS. Each AS has its own unique AS identifier number. BGP is the standard routing protocol used to exchange information about IP routing between autonomous systems. Each AS uses BGP to advertise prefixes that it can deliver traffic to. For example, if the network prefix 192.0.2.0/24 is inside AS 64496, then that AS will advertise to its provider(s) and/or peer(s) that it can deliver any traffic destined for 192.0.2.0/24. Although security extensions are available for BGP, and third-party route DB resources exist for validating routes, by default the BGP protocol is designed to trust all route announcements sent by peers, and few ISPs rigorously enforce checks on BGP sessions. IP hijacking can occur deliberately or by accident in one of several ways: An AS announces that it originates a prefix that it does not actually originate. An AS announces a more specific prefix than what may be announced by the true originating AS. An AS announces that it can route traffic to the hijacked AS through a shorter route than is already available, regardless of whether or not the route actually exists. Common to these ways is their disruption of the normal routing of the network: packets end up being forwarded towards the wrong part of the network and then either enter an endless loop (and are discarded), or are found at the mercy of the offending AS. Typically ISPs filter BGP traffic, allowing BGP advertisements from their downstream networks to contain only valid IP space. However, a history of hijacking incidents shows this is not always the case. The Resource Public Key Infrastructure (RPKI) is designed to authenticate route origins via cryptographic certificate chains demonstrating address block range ownership, but is not widely deployed yet. Once deployed, IP hijacking through errant issues at the origin (via both accident or intent) should be detectable and filterable. IP hijacking is sometimes used by malicious users to obtain IP addresses for use in spamming or a distributed denial-of-service (DDoS) attack. Like the TCP reset attack, session hijacking involves intrusion into an ongoing BGP session, i.e., the attacker successfully masquerades as one of the peers in a BGP session, and requires the same information needed to accomplish the reset attack. The difference is that a session hijacking attack may be designed to achieve more than simply bringing down a session between BGP peers. For example, the objective may be to change routes used by the peer, in order to facilitate eavesdropping, black holing, or traffic analysis.
Views: 2299 The Audiopedia
Phil Zimmermann: "Communications Security" | Talks at Google
 
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Phil Zimmermann, the creator of PGP and Silent Phone is our guest at Google, talking about communications security. How large scale deployments of end-to-end secure communications take place, the challenges this brings and the influence this focus on Enterprise has brought to the end-user.
Views: 2561 Talks at Google
WHAT IS BITCOIN SPORT ⚡ ICO REVIEW CRYPTO MINATI
 
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Bitcoin Sport (BSport token, exchange identifier 7ogZiMyzWcAdPPk8QTcLRaxPUDaUADiiLXEGcJjFu9qf on the decentralized Exchange DEX multiwheel cryptowallet waveswallet.io or client.wavesplatform.com) is a decentralized public cryptocurrency project based on the technology blockchain – token of the coin of the instant money transfer system and the multicurrency Waves cryptowallet based on WavesPlatform, supported by the Cryptocurrency Fund of the BS and the Fund for Investments in Internet Projects, which additionally provides liquidity, advertising support for the project and, ultimately, coins. Important news! The coin is already trading on 3 exchanges The most active coin is now traded on a pair of BTC, ETH, Waves and USD on the decentralized Waves DEX exchange (it is right in the third tab of the multicurrency cryptoshack waveswallet.io or client.wavesplatform.com, but, most recently, the coin went on 2 more exchanges. December 2 coin created in standard ERC-20. Look at Etherscan: https://etherscan.io/token/0x9c5ae761cb87e2e553b55867437b1e5daca32a5f December 6 – 8, 2018 coin Bitcoin Sport has been added to 2 more exchanges: EtherDelta & ForkDelta Website: https://bitcoin-sport.org/ Whitepaper: https://vk.com/doc2464324_480474896 Telegram: https://t.me/BSportENG Twitter: https://twitter.com/cred_fin Bitcointalk ANN: https://bitcointalk.org/index.php?topic=5038633.0 Author: Bitcointalk username: slasi1974 Bitcointalk profile link: https://bitcointalk.org/index.php?action=profile;u=1027759 Telegram: @Sheelamar Eth Address: 0x3685ff77f8e4deEc9abe29ceA15E33209863d4CD hashtags: #BitcoinSport #Cryptocurrency #Exchange #Bitcoin #cryptoexchange #graphene #dex
Views: 20 Crypto Minati
Protecting Sensitive Data in Huge Datasets (Cloud Next '19)
 
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Data is one of your company’s most valuable assets. Analytics and machine learning can help unlock valuable services to your customers and business. In this session, we will cover topics on how to balance data privacy with data utility to enable safer analytics at virtually any scale. This session will include real-world scenarios, hands-on examples, and demos of data classification, de-identification, and risk analysis in the context of data analytics. Build with Google Cloud → https://bit.ly/2UeEAnP Watch more: Next '19 Data Analytics Sessions here → https://bit.ly/Next19DataAnalytics Next ‘19 All Sessions playlist → https://bit.ly/Next19AllSessions Subscribe to the GCP Channel → https://bit.ly/GCloudPlatform Speaker(s): Scott Ellis, Felipe Hoffa, Patrick Lecuyer, Masud Hasan, Session ID: DA302
Unlocking the Power of Google BigQuery (Cloud Next '19)
 
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In this session, senior engineers from BigQuery and The Home Depot will show how to make the most of BigQuery as an Enterprise Data Warehouse. We will explore BigQuery's architecture and cover new features that make BigQuery more powerful than ever. Since there are many challenges in processing and managing master data in an Enterprise Data Warehouse, Home Depot will share how to load and manage Master data in Google's BigQuery environment. This session will help address challenges such as storing the historical changes (slow changing dimensions) to master data. Get started with BigQuery → https://bit.ly/2TWlvBC Watch more: Next '19 Data Analytics Sessions here → https://bit.ly/Next19DataAnalytics Next ‘19 All Sessions playlist → https://bit.ly/Next19AllSessions Subscribe to the GCP Channel → https://bit.ly/GCloudPlatform Speaker(s): Elliott Brossard, Subramanyam Dhurjati Session ID: DA213 product:BigQuery; fullname:Elliott Brossard;
DEF CON 22 - Zoz - Don't Fuck It Up!
 
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Slides Here: https://defcon.org/images/defcon-22/dc-22-presentations/Zoz/DEFCON-22-Zoz-Dont-Fuck-It-Up-UPDATED.pdf Don't Fuck It Up! Zoz ROBOTICS ENGINEER Online antics used to be all about the lulz; now they're all about the pervasive surveillance. Whether you're the director of a TLA just trying to make a booty call or an internet entrepreneur struggling to make your marketplace transactions as smooth as silk, getting up to any kind of mischief involving electronic communications now increasingly means going up against a nation-state adversary. And if even the people who most should know better keep fucking it up, what does that mean for the rest of us? What do the revelations about massive government eavesdropping and data ingestion mean for people who feel they have a right if not a duty to occasionally be disobedient? It's time for a rant. Analyzing what is currently known or speculated about the state of online spying through the prism of some spectacular fuckups, this talk offers an amusing introduction to how you can maximize your chances of enduring your freedom while not fucking it up. Learn how not to fuck up covering your tracks on the internet, using burner phones, collaborating with other dissidents and more. If you have anything to hide, and all of us do, pay attention and Don't. Fuck. It. Up! Zoz is a robotics engineer, prankster and general sneaky bastard. He has been pretty successful at pulling some cool subversive shit and not fucking it up and getting caught. He once faked a crop circle for the Discovery Channel and it was all uphill from there.
Views: 450249 DEFCONConference
IoT Security: Solving the Primary Hurdle to IoT Deployments (Cloud Next '18)
 
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Security is a top hurdle to IoT deployment. No company wants to be in the news for having its product as part of a large, IoT-driven DDoS attack. In this session you will learn how Google and Microchip have partnered to offer a seamless and highly-secure solution for IoT devices connecting to Google Cloud IoT. IOT201 Event schedule → http://g.co/next18 Watch more IoT sessions here → http://bit.ly/2mmHa7J Next ‘18 All Sessions playlist → http://bit.ly/Allsessions Subscribe to the Google Cloud channel! → http://bit.ly/NextSub
Views: 1540 Google Cloud Platform
IOTA tutorial 22: Masked Authenticated Messaging Demo Verifiable Claims
 
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If you like this video and want to support me, go this page for my donation crypto addresses: https://www.youtube.com/c/mobilefish/about This is part 22 of the IOTA tutorial. In this video series different topics will be explained which will help you to understand IOTA. It is recommended to watch each video sequentially as I may refer to certain IOTA topics explained earlier. The main objective of this video is to demonstrate a Masked Authenticated Messaging use case. MUNICIPALITY OF HAARLEM IOTA POC In 2017, Xurux Solutions in collaboration with ICTU, were commissioned by the municipality of Haarlem (the Netherlands) to create a Proof-of-Concept in which the citizens of Haarlem logs into a website using an existing Identity Management System (called DigID) to retrieve a publicly verifiable claim. This verifiable claim is in fact a QR code. The QR code contains information such as the hash value of the citizens personal data, root and other relevant data. This hash value, called the attest hash, is stored on the IOTA Tangle (MAM) using the previous mentioned root. Third parties, like housing corporations, can easily prove these verifiable claims. The QR code is scanned, to get the root and hash value. The attest hash value can now be retrieved from the Tangle and compared with the one stored in the QR code. See: https://github.com/Haarlem/digitale-waardepapieren VERIFIABLE CLAIMS DEMO Based on the municipality of Haarlem IOTA Proof-of-Concept I have created the "IOTA MAM Demo: Verifiable Claims": https://www.mobilefish.com/services/cryptocurrency/mam_verifiable_claims.html This demonstration is created for educational purpose and is NOT the same as the Haarlem's PoC. VERIFIABLE CLAIMS DEMO EXPLAINED Bruce requires an attestation from Gotham City stating that he is a resident of this city and he is eligible for social housing. Gotham City issues a verifiable claim to Bruce, attesting that he is a resident of Gotham City and he meets all the conditions for social housing. The claim is hashed (also known as attesthash) and stored on the Tangle using the Masked Authenticated Messaging in restricted mode. Bruce shares this claim with the social housing cooperative because he wants to be eligible for a social rental home. The social housing cooperative needs to verify that Bruce's claim is signed by Gotham City. The social housing cooperative does this by first hashing Bruce's claim. Let call this the "calculated attesthash". Next the social housing cooperative extracts the "stored attesthash" from the Tangle. All relevant information, such as root and uuid are stored in Bruce's claim. If the "calculated attesthash" is the same as the "stored attesthash" than this is the proof that Gotham City has signed Bruce's claim. To make this all work Gotham City must provide the social housing cooperative with the side key because of the use of the Masked Authenticated Messaging restricted mode. The social housing cooperative does not need to have any connection to or interaction with Gotham City. Each time Bruce requests for a verifiable claim an Universally Unique IDentifier (UUID) is generated compliant with RFC-4122 Version 4. One of the main reasons for using UUIDs is that no centralised authority is required to administer them. The chance of generating the same UUID is quite small especially if the UUIDs are generated using sufficient entropy. More information see: https://en.wikipedia.org/wiki/Universally_unique_identifier WHAT IS HMACSHA384 HMACSHA384 is a type of keyed hash algorithm that is constructed from the SHA-384 hash function and used as a Hash-based Message Authentication Code (HMAC). The output hash is 384 bits in length. An HMAC can be used to determine whether a message sent over an insecure channel has been tampered with, provided that the sender and receiver share a secret key. The sender computes the hash value for the original data and sends both the original data and hash value as a single message. The receiver recalculates the hash value on the received message and checks that the computed HMAC matches the transmitted HMAC. Any change to the data or the hash value will result in a mismatch, because knowledge of the secret key is required to change the message and reproduce the correct hash value. Therefore, if the original and computed hash values match, the message is authenticated. Please note: In our demo the key for the HMACSHA384, which is the uuid, is not secret because MAM restricted mode is being used. Check out all my other IOTA tutorial videos: https://www.youtube.com/playlist?list=PLmL13yqb6OxdIf6CQMHf7hUcDZBbxHyza Subscribe to my YouTube channel: https://www.youtube.com/channel/UCG5_CT_KjexxjbgNE4lVGkg?sub_confirmation=1 The presentation used in this video tutorial can be found at: https://www.mobilefish.com/developer/iota/iota_quickguide_tutorial.html #mobilefish #howto #iota
Views: 1412 Mobilefish.com
Summary - Applied Cryptography
 
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This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 1753 Udacity
X.509
 
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In cryptography, X.509 is an ITU-T standard for a public key infrastructure (PKI) and Privilege Management Infrastructure (PMI). X.509 specifies, amongst other things, standard formats for public key certificates, certificate revocation lists, attribute certificates, and a certification path validation algorithm. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 7821 Audiopedia
What's new in Android security (Google I/O '18)
 
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Attend this session to learn about security features in Android and how they affect your apps. It will cover new APIs and best practices for protecting the integrity of your app and the privacy of your data. Rate this session by signing-in on the I/O website here → https://goo.gl/wH2uSq Watch more Android sessions from I/O '18 here → https://goo.gl/R9L42F See all the sessions from Google I/O '18 here → https://goo.gl/q1Tr8x Subscribe to the Android Developers channel → http://goo.gl/GEh1ds #io18
Views: 18398 Android Developers
Lecture - 38 GSM and CDMA
 
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Lecture Series on Wireless Communications by Dr.Ranjan Bose, Department of Electrical Engineering, IIT Delhi. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 247820 nptelhrd
Google I/O 2009 - ..Standards-based Security & Identity..
 
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Google I/O 2009 - Practical Standards-based Security and Identity in the Enterprise Eric Sachs Google is incorporating today's open identity and authorization standards into not only its consumer applications, but also its enterprise software and its internal operations. Learn how Google both contributes to the advance of these technologies and applies them in practice. For presentation slides and all I/O sessions, please go to: code.google.com/events/io/sessions.html
Views: 2102 Google Developers
C# Tutorial 50: Decrypt Encrypted data again to simple text
 
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AES Encryptor - Encrypt and Decrypt text with AES encryption C# AES decryption Visual C# Crypt and Decrypt online Forms Application visual C# Adding AES encryption to C# application Forms Application encryption encrypt- decrypt with AES using C# Forms Application Advanced Encryption Standard Rijndael cipher Forms Application C# - Simple AES encryption using Visual C# cryptographic encrypt my 128 bit string using AES encryption cryptography C#
Views: 22600 ProgrammingKnowledge
Davos 2016 - The Transformation of Finance
 
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http://www.weforum.org/ What trends and uncertainties are shaping the future of financial services? Transformations to be addressed: - Digitization and new business models. - Regulatory requirements and new client needs. - Data privacy and systemic connectedness. Speakers: -John Cryan, Co-Chief Executive Officer, Deutsche Bank, Germany. -James P. Gorman, Chairman and Chief Executive Officer, Morgan Stanley, USA. -Christine Lagarde, Managing Director, International Monetary Fund (IMF), Washington DC. -Dan Schulman, Chief Executive Officer, PayPal, USA. -Tom de Swaan, Chairman of the Board and Group Chief Executive Officer ad Interim, Zurich Insurance Group, Switzerland. Moderated by Gillian R. Tett, Managing Editor, US, Financial Times, USA.
Views: 74273 World Economic Forum
WITx Talks - PUF: The Magic Circuit (for Hardware Security)
 
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Join Aaron Carpenter and Nate Derbinsky in this WITx Talk! Traditionally, security algorithms rely on random, but deterministic algorithms created in software. Unfortunately, random number generators are typically not truly random. This work explores the designs of Physical Unclonable Functions (PUFs), which provide hardware random numbers, leveraging the inherent manufacturing unpredictability for individual transistors. These circuits provide random numbers for cryptographic functions and digital signatures, skipping the software generation entirely. Meanwhile, in a growingly complicated and power-constrained microprocessor environment, large portions of the chip remain "dark" or without power.As much of the on-chip coach remains off at a given rime, we can repurpose portions as PUF circuits, creating a large array of random numbers for cryptographic functions.
Views: 559 WentworthInstTech
Triple DES
 
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In cryptography, Triple DES (3DES) is the common name for the Triple Data Encryption Algorithm (TDEA or Triple DEA) symmetric-key block cipher, which applies the Data Encryption Standard (DES) cipher algorithm three times to each data block. The original DES cipher's key size of 56 bits was generally sufficient when that algorithm was designed, but the availability of increasing computational power made brute-force attacks feasible. Triple DES provides a relatively simple method of increasing the key size of DES to protect against such attacks, without the need to design a completely new block cipher algorithm. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 15491 Audiopedia
MCITP 70-642: Wiress Access
 
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This video looks at configuring wireless networking on windows server 2008 R2. The video also covers the different standards used in wireless networking.
Views: 16997 itfreetraining
A Tutorial on Network Protocols
 
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Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 9807 nptelhrd
GDD-BR 2010 [0H] OpenID-based single sign-on and OAuth data access
 
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Speaker: Ryan Boyd Track: Chrome and HTML5 Time slot: H[17:20 - 18:05] Room: 0 A discussion of all the auth tangles you've encountered so far -- OpenID, SSO, 2-Legged OAuth, 3-Legged OAuth, and Hybrid OAuth. We'll show you when and where to use them, and explain how they all integrate with Google APIs and other developer products.
Views: 8457 Google Developers
Elliptic curve cryptography
 
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Elliptic curve cryptography is an approach to public-key cryptography based on the algebraic structure of elliptic curves over finite fields. One of the main benefits in comparison with non-ECC cryptography is the same level of security provided by keys of smaller size. Elliptic curves are applicable for encryption, digital signatures, pseudo-random generators and other tasks. They are also used in several integer factorization algorithms that have applications in cryptography, such as Lenstra elliptic curve factorization. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 2911 Audiopedia
3: Theory and Practice of Freedom of Expression
 
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One of the thorniest faces of free speech debate is the tension between free expression as an abstract principle and kinds of speech that harm, such as hate speech, incitements to violence, or uses of information which can cause economic damage or threaten security or privacy. And technologies change how information can move, and harm. This week we put a historian of the earliest post-printing-press debates over free speech in dialog with a historian of the information practices of hate groups in America. Recorded October 19th, 2018

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