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Output Feedback Mode (OFB) | Algorithm Modes in Cryptography
 
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In this network security video tutorial we will study and understand the working of Output Feedback (OFB) also known as OFB algorithm mode. Output Feedback (OFB) - 1. In this mode data is encrypted in units that are smaller (e.g. they could be of size 8 bits) than a defined block size (which is usually 64 bits). 2. OFB mode works with j bits at a time (as we have seen, usually, but not always , j = 8) 3. OFB mode is extremely similar to the CFB 4. The only difference is that in the case of CFB, the cipher text is fed into the next stage of encryption process. 5. In case of OFB, the output of the IV encryption process is fed into the next stage of encryption process. Following are the steps of OFB mode - Step 1 - Encrypt the IV(initialization vector) using the KEY to get the Encrypted IV. Step 2 - Perform XOR operation between first j bits of encrypted IV and j bits of Plain Text to get j bits of Cipher Text(Cipher text block 1) Step 3 - left shift the IV by j bits & add theencrypted IV from the previous step to the right most side of the original IV. Complete Network Security / Information Security Playlist - https://www.youtube.com/watch?v=IkfggBVUJxY&list=PLIY8eNdw5tW_7-QrsY_n9nC0Xfhs1tLEK Download my FREE Network Security Android App - https://play.google.com/store/apps/details?id=com.intelisenze.networksecuritytutorials Simple Snippets Official Website - http://simplesnippets.tech/ Simple Snippets on Facebook - https://www.facebook.com/simplesnippets/ Simple Snippets on Instagram - https://www.instagram.com/simplesnippets/ Simple Snippets on Twitter - https://twitter.com/simplesnippet Simple Snippets Google Plus Page - https://plus.google.com/+SimpleSnippets Simple Snippets email ID - [email protected] For More Technology News, Latest Updates and Blog articles visit our Official Website - http://simplesnippets.tech/ #OutputFeedbackMode #AlgorithmModes #NetworkSecurity #Cryptography #BlockCiphers
Views: 2127 Simple Snippets
NETWORK SECURITY - BLOCK CIPHER MODES OF OPERATION
 
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1. Electronic Code Book Mode 2. Cipher Block Chaining Mode 3. Output Feedback Mode 4. Cipher Feedback Mode 5. Counter Mode
Cipher Feedback Mode - 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: 36510 Udacity
Output Feedback Mode Solution - 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: 2286 Udacity
Modes of Block Cipher - Output Feedback Mode
 
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This presentation video shows the working process of the Output feedback mode's Encryption and Decryption process.
Views: 1118 Bryan Loh
Cryptography - Output Feedback Mode
 
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This video is explains about the process of output feedback mode.
Views: 58 Calven Wong
Output Feedback Mode
 
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Views: 514 Ting Ye Han
Output Feedback Mode
 
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Output Feedback Mode
Views: 1140 Chris Lee
Output Feedback Mode
 
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For academic purpose
Views: 39 Howard Fong
Block Cipher Primitives
 
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This video is part of the Udacity course "Intro to Information Security". Watch the full course at https://www.udacity.com/course/ud459
Views: 285 Udacity
OFB Cipher Block
 
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Simple animation demonstrating how OFB Encryption/Decryption works.
Views: 583 Abdul Mohd
Block Ciphers and DES (CSS441, L05, Y15)
 
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DES vs Simplifed DES; DES design; Avalanche effect. Course material via: Stream vs block ciphers; ideal block cipher and Feistel structure; example of Simplified-DES. Course material via: Modes of operation for block ciphers, introducing ECB, CBC and Counter mode. Course material via: CSS441, Semester 2, 2015, Lectures at Sirindhorn International Institute of Technology, Thammasat University, Thailand by Steven Gordon. Course material via: .
Views: 56 Rick Dodele
Thwarting Dictionary Attacks - 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: 912 Udacity
Cipher Block Chaining Mode. Encryption and Decryption
 
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Video made by Askarbek Almazbek uulu and Tan Hsiang Weih. CSCI361- Cryptography and Secure Application.
Views: 218 Askar Almazbekuulu
Stream cipher
 
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A stream cipher is a symmetric key cipher where plaintext digits are combined with a pseudorandom cipher digit stream (keystream). In a stream cipher each plaintext digit is encrypted one at a time with the corresponding digit of the keystream, to give a digit of the ciphertext stream. An alternative name is a state cipher, as the encryption of each digit is dependent on the current state. In practice, a digit is typically a bit and the combining operation an exclusive-or (xor). The pseudorandom keystream is typically generated serially from a random seed value using digital shift registers. The seed value serves as the cryptographic key for decrypting the ciphertext stream. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 3477 Audiopedia
ECB Problem #1
 
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This video is part of the Udacity course "Intro to Information Security". Watch the full course at https://www.udacity.com/course/ud459
Views: 2124 Udacity
Cfb Decryption - 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: 2476 Udacity
Format String Vulnerabilities Primer (Part 1 The Basics)
 
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Full Video Details: http://www.securitytube.net/video/343
Views: 9871 TheSecurityTube
symmetric key cryptography
 
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https://8gwifi.org/CipherFunctions.jsp Reference book: http://leanpub.com/crypto Cryptographic Algorithms generally fall into one of two different categories, or are a combination of both. Symmetric Fast Only provide confidentiality Examples: DES, AES, Blowfish, RC4, RC5 Asymmetric Large mathematical operations make it slower than symmetric algorithms No need for out of band key distribution (public keys are public!) Scales better since only a single key pair needed per individual Can provide authentication and nonrepudiation Examples: RSA, El Gamal, ECC, Diffie-Hellman problem with symmetric key cryptography DES (Data Encryption Standard) 64 bit key that is effectively 56 bits in strength Actual algorithm is called DEA (Data Encryption Algorithm) DES Modes Electronic Code Book Cipher Block Chaining (most commonly used for general purpose encryption) Cipher Feedback Output Feedback Counter Mode (used in IPSec) 3DES 112-bit effective key length Uses either 2 or 3 different smaller keys in one of several modes Modes EEE2/3 EDE2/3 AES NIST replaced DES in 1997 with this Uses the Rijndael algorithm Supports key/block sizes of 128, 192, and 256 bits Uses 10/12/14 rounds as block size increases IDEA (International Data Encryption Algorithm) Operates on 64 bit blocks in 8 rounds with 128 bit key Considered stronger than DES and is used in PGP Blowfish 64 bit block cipher with up to 448 bit key and 16 rounds Designed by Bruce Schneier RC4 Stream cipher with variable key size created by Ron Rivest RC5 Another Rivest cipher Block cipher with 32/64/128 bit blocks and keys up to 2048 bits RC6 Beefier version of RC5 submitted as AES candidate CAST 64 bit block cipher with keys between 40-128 bits with 12-16 rounds depending on key length CAST-256 used 128-bit blocks and keys from 128-256 bits using 48 rounds SAFER (Secure and Fast Encryption Routine) Set of patent-free algorithms in 64 and 128 bit block variants Variation used in Bluetooth Twofish Adapted version of Blowfish with 128 bit blocks, 128-256 bit keys and 16 rounds AES Finalist Kryptografie mit symmetrischem Schlüssel symmetric key cryptography symmetric key cryptography tutorial symmetric key cryptography example symmetric key cryptography vs asymmetric key cryptography symmetric and asymmetric key cryptography symmetric key cryptography Kryptografie mit symmetrischem Schlüssel Kryptographie mit symmetrischem Schlüssel Kryptographie mit symmetrischem Schlüssel Kryptografie mit symmetrischem Schlüssel und asymmetrische Schlüsselkryptographie symmetrische und asymmetrische Schlüsselkryptographie Kryptografie mit symmetrischem Schlüssel
Views: 41496 Zariga Tongy
One Time Pad Solution - 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: 5099 Udacity
Counter Mode
 
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Views: 52 Min Yue Yong
Block cipher mode of operation
 
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In cryptography, a mode of operation is an algorithm that uses a block cipher to provide an information service such as confidentiality or authenticity. A block cipher by itself is only suitable for the secure cryptographic transformation (encryption or decryption) of one fixed-length group of bits called a block. A mode of operation describes how to repeatedly apply a cipher's single-block operation to securely transform amounts of data larger than a block. Most modes require a unique binary sequence, often called an initialization vector (IV), for each encryption operation. The IV has to be non-repeating and, for some modes, random as well. The initialization vector is used to ensure distinct ciphertexts are produced even when the same plaintext is encrypted multiple times independently with the same key. Block ciphers have one or more block size(s), but during transformation the block size is always fixed. Block cipher modes operate on whole blocks and require that the last part of the data be padded to a full block if it is smaller than the current block size. There are, however, modes that do not require padding because they effectively use a block cipher as a stream cipher. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 3552 Audiopedia
Threat Model - 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: 1533 Udacity
Symmetric Key Cryptography Vs Asymmetric Key Cryptography Explained in Hindi
 
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📚📚📚📚📚📚📚📚 GOOD NEWS FOR COMPUTER ENGINEERS INTRODUCING 5 MINUTES ENGINEERING 🎓🎓🎓🎓🎓🎓🎓🎓 SUBJECT :- Discrete Mathematics (DM) Theory Of Computation (TOC) Artificial Intelligence(AI) Database Management System(DBMS) Software Modeling and Designing(SMD) Software Engineering and Project Planning(SEPM) Data mining and Warehouse(DMW) Data analytics(DA) Mobile Communication(MC) Computer networks(CN) High performance Computing(HPC) Operating system System programming (SPOS) Web technology(WT) Internet of things(IOT) Design and analysis of algorithm(DAA) 💡💡💡💡💡💡💡💡 EACH AND EVERY TOPIC OF EACH AND EVERY SUBJECT (MENTIONED ABOVE) IN COMPUTER ENGINEERING LIFE IS EXPLAINED IN JUST 5 MINUTES. 💡💡💡💡💡💡💡💡 THE EASIEST EXPLANATION EVER ON EVERY ENGINEERING SUBJECT IN JUST 5 MINUTES. 🙏🙏🙏🙏🙏🙏🙏🙏 YOU JUST NEED TO DO 3 MAGICAL THINGS LIKE SHARE & SUBSCRIBE TO MY YOUTUBE CHANNEL 5 MINUTES ENGINEERING 📚📚📚📚📚📚📚📚
Views: 3049 5 Minutes Engineering
Cipher Block Chaining (CBC)
 
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In this video we discuss about the Cipher Block Chaining (CBC) mode of operation, the process of encryption and decryption. Video prepared by : Chin Yi Kang & Tan Xin Huan Facebook : https://www.facebook.com/alfiechin0 Instagram : https://www.instagram.com/imkang919/
Views: 1343 Alfie Chin
25c3: An introduction to new stream cipher designs
 
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Speaker: Tor E. Bjørstad Turning data into line noise and back Even with "nothing to hide", we want to protect the privacy of our bits and bytes. Encryption is an important tool for this, and stream ciphers are a major class of symmetric-key encryption schemes. Algorithms such as RC4 (used in WEP/WPA, bittorrent, SSL), A5/1 (GSM telephony), E0 (bluetooth), as well as AES in counter (CTR) mode, are important examples of stream ciphers used in everyday applications. Whereas a block cipher such as AES works by encrypting fixed-length data blocks (and chaining these together in a suitable mode of operation), stream ciphers output an unique and arbitrary-length keystream of pseudorandom bits or bytes, which is simply XORed with the plaintext stream to produce the ciphertext. Advantages of stream ciphers often include smaller hardware footprint and higher encryption speeds than comparable block ciphers such as AES. However, cryptanalysis has led to attacks on many of the existing algorithms. The ECRYPT Stream Cipher Project (eSTREAM) has been a 4-year project funded by the EU to evaluate new and promising stream ciphers. The project ended in April 2008, with a final portfolio which currently consists of 7 ciphers: 3 suitable for hardware implementation, and 4 aimed at software environments. The portfolio ciphers are considered to provide an advantage over plain AES in at least one significant aspect, but the designs are very different and often suited for different applications. Since the eSTREAM ciphers are quite new, many of them are not well known outside the academic community. The goal of this talk is to give a very quick presentation of each of the 7 portfolio ciphers: Grain v1, MICKEY v2, Trivium, HC-128, Rabbit, Salsa20/12 and SOSEMANUK. More information about the 25th Chaos Communication Congress can be found via the Chaos Communication Congress website: http://bit.ly/25c3_program Source: http://bit.ly/25c3_videos
Views: 2622 Christiaan008
Kriptoloji 10 Blok Şifreleme Modları
 
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Blok şifreleme modları olan Elektronik Kod Defteri Şekli (Electronic Codebook Mode, ECB) Şifre Blok Zincirlemesi Şekli (Cipher Block Chaining Mode, CBC) Yayılımlı Şifre Blok Zincirlemesi ( Propagating Cipher Block Chaining, PCBC) Şifre Geri Beslemeli (Cipher FeedBack , CFB) Çıktı Geri Beslemeli (Output FeedBack Mode, OFB) Sayıcı Şekli Şifreleme (Counter Mode Encryption, CTR, CM, ICM, SIC) Modları anlatılmıştır.
Views: 5335 BilgisayarKavramlari
AFD26 - Common-mode Feedback (continued).
 
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video lectures from iit professors.... not available in NPTEL..... video Lectures on "Active Filter Design" by Dr.Shanthi Pavan , IIT Madras for more videos .... www.satishkashyap.com for free ebooks.....www.ebook29.blogspot.com Lecture 1 - Course overview and introduction. Lecture 2 - The Butterworth approximation Lecture 3 - The Chebyshev approximation Lecture 4 - The Chebyshev approximation (contd) Lecture 5 - The Chebyshev approximation (contd), the Inverse Chebyshev approximation Lecture 6 - The Inverse Chebyshev approximation (contd). Lecture 7 - Synthesis of doubly terminated all-pole LC ladders filters Lecture 8 - Synthesis of doubly terminated LC ladders (contd). Lecture 9 - Synthesis of doubly terminated LC ladders with finite zeros of transmission. Lecture 10 - Network sensitivity - low sensitivity of doubly terminated ladders Lecture 11 - Introduction to frequency transformations. Lecture 12 - Frequency (reactance) transformations (contd) - properties of the driving impedance of lossless LC networks- Tellegen's theorem and positive real functions. Lecture 13 - Driving point impedance of LC networks (contd), Low Pass-to-Low Pass, Low Pass-to-Band Pass, Low Pass-to-High Pass and Low Pass-to-Band Stop transformations Lecture 14 - The Richard's Transformation, RC-CR transformation Lecture 15 - Emulation of an inductor with a capacitor and controlled sources, the gyrator, a second order transconductor capacitor filter. Lecture 16 - Cascade of biquads realization of high order low pass filters, equivalence of the parallel RLC and series RLC circuits with their Gm-C counterparts. Lecture 17 - The idea of Dynamic Range in active filters - impedance scaling and its effect on dynamic range Lecture 18 - Introduction to noise in electrical networks. Lecture 19 - Introduction to noise in electrical networks (contd), the idea of node scaling. Lecture 20 - Dynamic range scaling in active filters. Lecture 21 - Biquad Ordering. Lecture 22 - Active Ladder Emulation / Leapfrog Filters, Effect of Transconductor nonidelaities (parasitic capacitance/output resistance). Lecture 23 - Effect of Transconductor Nonidealities (contd) - parasitic poles. Lecture 24 - Viewing the Gm-C biquad as a Double Integrator Loop, Revisiting the Effect of Finite Gain of the Transconductors. Lecture 25 - Single-ended Versus Differential Filters, Introducing the Differential-pair Based Fully Differential Transconductor, the Need for Common-mode Feedback Lecture 26 - Common-mode Feedback (continued). Lecture 27 - Common-mode Feedback (continued), examples of Common-mode Detectors. Lecture 28 - Stability of the Common-mode Feedback Loop Lecture 29 - Common-mode Positive Feedback in Gyrators. Lecture 30 - Common-mode Positive Feedback in Gyrators (contd), Noise in the Differential Pair. Lecture 31 - Noise in the Differential Pair (contd), Linearity of the Differential Pair, Cascoding to Improve Output Impedance Lecture 32 - Noise in Cascodes, Layout Considerations and Multi-finger Transistors. Lecture 33 - Linearizing the Differential Pair, Resistive Degeneration. Lecture 34 - Noise in Degenerated Transconductors, The Folded Cascode and Noise Analysis Lecture 35 - Stabilizing filter bandwidth over process and temperature - the resistor servo loop, master-slave loops. Lecture 36 - Turning the filter into a VCO to estimate center frequency, example of a practical precision fixed-gm bias circuit. Lecture 37 - Introduction to accurate measurement and characterization techniques for active filters. Lecture 38 - Introduction to Active-RC filters. Lecture 39 - Active-RC filters (contd), the use of an OTA instead of an opamp, swing and noise considerations, single stage OTAs Lecture 40 - Multistage OTAs for use in CMOS Active-RC filters. Lecture 41 - The Miller compensated opamp in active-RC filters, noise considerations, noise in active-RC filters . Lecture 42 - Distortion and Intermodulation in filters, miscellaneous discussion on fixed gm-bias circuits
Views: 1861 Satish Kashyap
Netsim cryptographic XOR Encryption and Decryption
 
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Netsim cryptographic XOR Encryption and Decryption
Views: 148 krishna v
File Encryption Solution - 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: 1417 Udacity
AFD30 - Common-mode Positive Feedback in Gyrators (contd), Noise in the Differential Pair.
 
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video lectures from iit professors.... not available in NPTEL..... video Lectures on "Active Filter Design" by Dr.Shanthi Pavan , IIT Madras for more videos .... www.satishkashyap.com for free ebooks.....www.ebook29.blogspot.com Lecture 1 - Course overview and introduction. Lecture 2 - The Butterworth approximation Lecture 3 - The Chebyshev approximation Lecture 4 - The Chebyshev approximation (contd) Lecture 5 - The Chebyshev approximation (contd), the Inverse Chebyshev approximation Lecture 6 - The Inverse Chebyshev approximation (contd). Lecture 7 - Synthesis of doubly terminated all-pole LC ladders filters Lecture 8 - Synthesis of doubly terminated LC ladders (contd). Lecture 9 - Synthesis of doubly terminated LC ladders with finite zeros of transmission. Lecture 10 - Network sensitivity - low sensitivity of doubly terminated ladders Lecture 11 - Introduction to frequency transformations. Lecture 12 - Frequency (reactance) transformations (contd) - properties of the driving impedance of lossless LC networks- Tellegen's theorem and positive real functions. Lecture 13 - Driving point impedance of LC networks (contd), Low Pass-to-Low Pass, Low Pass-to-Band Pass, Low Pass-to-High Pass and Low Pass-to-Band Stop transformations Lecture 14 - The Richard's Transformation, RC-CR transformation Lecture 15 - Emulation of an inductor with a capacitor and controlled sources, the gyrator, a second order transconductor capacitor filter. Lecture 16 - Cascade of biquads realization of high order low pass filters, equivalence of the parallel RLC and series RLC circuits with their Gm-C counterparts. Lecture 17 - The idea of Dynamic Range in active filters - impedance scaling and its effect on dynamic range Lecture 18 - Introduction to noise in electrical networks. Lecture 19 - Introduction to noise in electrical networks (contd), the idea of node scaling. Lecture 20 - Dynamic range scaling in active filters. Lecture 21 - Biquad Ordering. Lecture 22 - Active Ladder Emulation / Leapfrog Filters, Effect of Transconductor nonidelaities (parasitic capacitance/output resistance). Lecture 23 - Effect of Transconductor Nonidealities (contd) - parasitic poles. Lecture 24 - Viewing the Gm-C biquad as a Double Integrator Loop, Revisiting the Effect of Finite Gain of the Transconductors. Lecture 25 - Single-ended Versus Differential Filters, Introducing the Differential-pair Based Fully Differential Transconductor, the Need for Common-mode Feedback Lecture 26 - Common-mode Feedback (continued). Lecture 27 - Common-mode Feedback (continued), examples of Common-mode Detectors. Lecture 28 - Stability of the Common-mode Feedback Loop Lecture 29 - Common-mode Positive Feedback in Gyrators. Lecture 30 - Common-mode Positive Feedback in Gyrators (contd), Noise in the Differential Pair. Lecture 31 - Noise in the Differential Pair (contd), Linearity of the Differential Pair, Cascoding to Improve Output Impedance Lecture 32 - Noise in Cascodes, Layout Considerations and Multi-finger Transistors. Lecture 33 - Linearizing the Differential Pair, Resistive Degeneration. Lecture 34 - Noise in Degenerated Transconductors, The Folded Cascode and Noise Analysis Lecture 35 - Stabilizing filter bandwidth over process and temperature - the resistor servo loop, master-slave loops. Lecture 36 - Turning the filter into a VCO to estimate center frequency, example of a practical precision fixed-gm bias circuit. Lecture 37 - Introduction to accurate measurement and characterization techniques for active filters. Lecture 38 - Introduction to Active-RC filters. Lecture 39 - Active-RC filters (contd), the use of an OTA instead of an opamp, swing and noise considerations, single stage OTAs Lecture 40 - Multistage OTAs for use in CMOS Active-RC filters. Lecture 41 - The Miller compensated opamp in active-RC filters, noise considerations, noise in active-RC filters . Lecture 42 - Distortion and Intermodulation in filters, miscellaneous discussion on fixed gm-bias circuits
Views: 919 Satish Kashyap
Cryptographic Hash Function Solution - 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: 1539 Udacity
Project #2 - C++ XOR Encryption
 
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Program Used : Bandicam [ PAID ] KineMaster [ PAID ] Visual Studio 2012 Ultimate Can We Get 5 Likes For This Video? Subscribe for more videos! Have a nice day! @ CoderEin Special Thanks to Microsoft Guides Tech! Music used : Costollo - Dancing Lorea
Views: 63 CodeRein VS
Cryptographic Hash Function - 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: 9076 Udacity
Hummingbird cryptography algorithm working on FPGA Board
 
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Implementation of Hummingbird Cryptography Algorithm on DE2 115 Cyclone IV FPGA Board. Leave your comments regarding the code. You can approach me if you have any queries related to Hummingbird Cryptography Algorithm.
Views: 149 Hinpreet kaur Basra
Crypto 51% Attacks in 2019 - What to Expect, How Do They Work?
 
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51% attacks have been on the rise in the cryptocurrency world in 2018 and 2019. Particularly, they have attacked altcoin blockchain networks which are vulnerable because they don't have too much hash power securing the network. Coins like Verge, Ethereum Classic, Bitcoin Gold, etc. have all suffered attacks. A big reason this is now possible is because mining power is increasingly available for rent via services like NiceHash. Furthermore, in the bear market, more miners are leaving, making it easier to obtain 51% or more of the networks total hash power. To take advantage of this, malicious miners, send coins to exchanges, trade them, and then broadcast a longer blockchain with that transaction left out. That way they get their original coins back AND whatever coin they received for the trade. This is becoming a big problem and the market will have to find a solution for it that balances out the various factors. The content from this video is from Anthony Xie of HodlBot. - You can read the original article here: https://blog.hodlbot.io/51-attacks-for-rent - And visit their site: https://www.hodlbot.io/ #Cryptocurrency #51attack #DoubleSpend
Views: 1984 Bitcoin for Beginners
21. Cryptography: Hash Functions
 
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MIT 6.046J Design and Analysis of Algorithms, Spring 2015 View the complete course: http://ocw.mit.edu/6-046JS15 Instructor: Srinivas Devadas In this lecture, Professor Devadas covers the basics of cryptography, including desirable properties of cryptographic functions, and their applications to security. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 72818 MIT OpenCourseWare
India 101: India Explored - 3. An Overview of the Ensemble
 
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Additional videos for this title: http://j.mp/1KBt1Ht India 101: India Explored by Matt Vanacoro Video 3 of 24 for India 101: India Explored Creating a realistic-sounding Indian track requires a sample instrument with a lot of depth, articulations and playability options. Thats exactly what Native Instrument has created. Every instrument in this Discovery Series library, whether percussive or melodic in nature, has a very specific and deep set of samples to create the illusion of being the real Indian thing. Watch as expert trainer Matt Vanacoro explores the ensemble mode where you can select your band, customize the mix, edit patterns, adjust the grooves and much more. Then, join Matt as he carefully and precisely explains each instrument and shows you how to perform them to create realistic ensembles or crazy ethnic mashups. India has come to Kontakt! So watch, listen, learn and begin integrating this amazing instrument into your scores, electronic dance tracks and more. More info on this title: http://j.mp/1KBt1Ht
Views: 2279 macProVideoDotCom
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: 1379 Mobilefish.com
CTF CYPHER "16 (OFFICIAL VIDEO) Dir|@STEVENQSPEILBERG
 
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CTF CYPHER "16 Dir|@StevenQSpeilberg | EBAN FILMS [email protected] 443-430-1764 for more videos: https://www.youtube.com/SSBERG1
Views: 1444 EBAN FILMS