Search results “Cryptographers distinguish codes and ciphers books”
Cryptography: The Science of Making and Breaking Codes
There are lots of different ways to encrypt a message, from early, simple ciphers to the famous Enigma machine. But it’s tough to make a code truly unbreakable. Hosted by: Michael Aranda ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, John Szymakowski, Fatima Iqbal, Justin Lentz, David Campos, and Chris Peters. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: http://www.vectorsite.net/ttcode_04.html#m3 http://www.simonsingh.net/The_Black_Chamber/crackingprinciple.html http://book.itep.ru/depository/crypto/Cryptography_history.pdf http://www.cs.trincoll.edu/~crypto/historical/gronsfeld.html http://www.sans.org/reading-room/whitepapers/vpns/history-encryption-730 http://ftp.stmarys-ca.edu/jsauerbe/m10s11/chapter5.pdf http://www.turing.org.uk/scrapbook/ww2.html http://enigma.louisedade.co.uk/howitworks.html http://www.codesandciphers.org.uk/enigma/example1.htm http://www.pbs.org/wgbh/nova/military/how-enigma-works.html http://www.cs.miami.edu/~burt/learning/Csc609.051/notes/02.html
Views: 823218 SciShow
1. Electronic Code Book Mode 2. Cipher Block Chaining Mode 3. Output Feedback Mode 4. Cipher Feedback Mode 5. Counter Mode
Top 5 Books On Cryptography
1. Applied Cryptography 2. Handbook of Applied Cryptography 3. The Code Book 4. Cryptography and Network Security: Principles and Practice 5. Introduction to Modern Cryptography
Views: 965 Patel Vidhu
Encryption: ECB v CBC
http://asecuritysite.com/subjects/chapter58 I forgot to add the key to each of the stages of CBC.
Views: 17827 Bill Buchanan OBE
Null Cipher Code
Deane shows how to use a simple code to send secret messages. SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow CONNECT WITH CURIOSITY Facebook ➤ http://www.facebook.com/CuriosityShow Twitter ➤ https://twitter.com/CuriosityShow Curiosity Show ➤ www.curiosityshow.com.au
Views: 11196 CuriosityShow
Vigenere Cipher 1
Encrypt the message MAKE IT HAPPEN using the Vigenėre cipher and key word MATH.
Views: 166873 MathAfterMath
All Alphabets  are Extra Terrestrial!
The language is designed to turn you back into source code thinking! codex (n.) "manuscript volume (especially an ancient one)," 1845, from Latin codex (see code (n.)). codicil (n.) early 15c., from Middle French codicille, from Latin codicillus "a short writing, a small writing tablet," diminutive of codex (genitive codicis), see code (n.). code (n.) c. 1300, "systematic compilation of laws," from Old French code "system of laws, law-book" (13c.), from Latin codex, earlier caudex "book, book of laws," literally "tree trunk," hence, book made up of wooden tablets covered with wax for writing. Meaning "cipher" (the sense in secret code) is from 1808. cipher (v.) "to do arithmetic" (with Arabic numerals), 1520s, from cipher (n.). Meaning "to write in code" is from 1560s. Related: Ciphered; ciphering. cipher (n.) late 14c., "arithmetical symbol for zero," from Old French cifre "nought, zero," Medieval Latin cifra, with Spanish and Italian cifra, ultimately from Arabic sifr "zero," literally "empty, nothing," from safara "to be empty;" loan-translation of Sanskrit sunya-s "empty." The word came to Europe with Arabic numerals. Originally in English "zero," then "any numeral" (early 15c.), then (first in French and Italian) "secret way of writing; coded message" (a sense first attested in English 1520s), because early codes often substituted numbers for letters. Klein says Modern French chiffre is from Italian cifra. A codicil is a testamentary document similar but not necessarily identical to a will. In some jurisdictions, it may serve to amend, rather than replace, a previously executed will. In others, it may serve as an alternative to a will. In still others, there is no recognized distinction between a codicil and a will. Latin codicillus meaning a short additional text or a small writing tablet. The diminutive of codex see also code[
Views: 89 ncbookz.com llc
AES Encryption (ECB vs. CBC) Visualization
This visualization demonstrates the difference between AES Encryption using Electronic Code Book (ECB) and AES Encryption using Cipher Block Chaining (CBC). Cipher Block Chaining is clearly the stronger of the two. The AES encryption was written in Rust (github link to come) for a project in my Applied Cryptography course. The animation was created using 3Blue1Brown's manim library: https://github.com/3b1b/manim
Views: 267 ObliqueMotion
Output Feedback Mode (OFB) | Algorithm Modes in Cryptography
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: 2990 Simple Snippets
symmetric key cryptography
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: 42408 Zariga Tongy
Algorithm Modes & Algorithm Types in Network Security - ECB | CBC | CFC | OFB | CTR
In this network security video tutorial we will study and understand the different types of algorithms and the different modes in which these algorithms work. An algorithm type is basically how the algorithm operates on the plain text to get the cipher text. It can be classified into 2 categories - 1. Stream Ciphers - Stream cipher techniques involves the encryption of plain text one bit at a time and decryption also happens one bit at a time. 2. Block Ciphers - Block cipher techniques involves the encryption of plain text one block(64 bit or some fixed size) at a time and decryption also happens one block at a time. Algorithm modes - An Algorithm mode is a combination of a series of the basic algorithm steps on block cipher and some kind of feedback from the previous step. In general there are 5 different types of algorithm modes in NS- 1. Electronic Code Book (ECB) 2. Cipher Block Chaining (CBC) 3. Cipher Feedback (CFC) 4. Output Feedback (OFB) 5. Counter Mode (CTR) 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/ #BlockCipherVsStreamCipher #AlgorithmModes #NetworkSecurity #Cryptography #BlockCiphers #StreamCiphers #ECB #CBC #CFB #OFB #CounterMode
Views: 1639 Simple Snippets
Breaking Codes and Finding Patterns - Susan Holmes
In her Mathematics Research Center Public Lecture, “Breaking Codes and Finding Patterns,” Professor Susan Holmes will discuss what we can learn from the master codebreakers who solved the intricacies of the Enigma encryption machine during World War II and how to leverage patterns using mathematics and statistics.
Views: 8517 Stanford
Adam Young, Malicious Cryptography - Exposing Cryptovirology (February 27, 2004)
From the CISR video library (http://www.cisr.us) Dr. Adam Young, Cigital Malicious Cryptography - Exposing Cryptovirology February 27, 2004 at the Naval Postgraduate School (http://www.nps.edu) ABSTRACT Cryptography is commonly regarded as an enabling technology. It allows for confidential information transmission over untrusted networks as well as the ability to prove the origin of messages. It is a technology that is critical in an on-line world. However, cryptography is also a very powerful disabling technology. In recent years there has been a significant amount of research into using well-known cryptographic paradigms and tools for the purposes of undermining the security of computer systems once internal access is acquired. This talk will give an overview of a new book that details this dark side of cryptography. The book is entitled "Malicious Cryptography: Exposing Cryptovirology," and is authored by Adam Young and Moti Yung (published by John Wiley & Sons). Some of the more noteworthy attacks that are described in the book are the following. It is shown how to use public key cryptography to mount reversible denial-of-service attacks. A virus attack is detailed in which the virus asymmetrically encrypts host data (that has not been backed-up). The effects of the attack can only be reversed if the attacker agrees to use his or her own private decryption key. It is shown how to devise a cryptovirus that steals data from a host machine without revealing that which is sought, even if the virus is under constant surveillance. It is shown how to design a password snatching cryptotrojan that makes it virtually impossible to identify the author when the encrypted passwords are retrieved. Furthermore, it is intractable to determine if the cryptotrojan is encrypting anything at all when all even when all of its actions are recorded and analyzed. Finally, cryptotrojans are described that attack industry-standard cryptosystems. By design, these Trojans give the attacker covert access to the private keys of users and are extremely robust against reverse-engineering. When implemented in tamper-resistant devices the theft cannot be detected by anyone save the attacker. The book also covers various countermeasures that can help protect against these attacks. About Dr. Adam Young Dr. Adam Young is a Research Scientist at Cigital. He is responsible for researching and developing software and techniques to help support the research goals for Cigital's research contracts. In his first year at Cigital, Adam has served as a primary investigator on a research project for the DoD. Adam Young recently worked for Lockheed Martin Global Telecommunications. Prior to this he was a Member of Technical Staff (MTS) at Lucent Technologies in the Secure Systems Research Division. Before joining Lucent he worked as a cryptography consultant for CertoCo (a spin-off of Banker's Trust). Dr. Young holds a BS in Electrical Engineering from Yale University, an MS in Computer Science from Columbia University, and a PhD in Computer Science from Columbia University that was awarded with Distinction. He gives invited talks regularly and will be giving an upcoming talk at the Palo Alto Research Center (PARC) on his forthcoming book [[i]]. He will also be giving an invited talk at the Sixth International Joint Meeting of the AMS and the Sociedad Matematica Mexicana (SMM), Special Session on Coding Theory and Cryptography, in Houston. The session is being held by Neal Koblitz. Dr. Young has also given invited talks at NYU, Bell Labs, and Sandia National Labs. He has taught computer science courses at Columbia University and is a member of the International Association for Cryptologic Research (IACR). He has published numerous papers on cryptography, computer security, and algorithmic number theory and his next paper will be presented in the Cryptographer's Track of the RSA Conference, 2004 [[ii]]. [[i]] Adam Young, Moti Yung, "Malicious Cryptography: Exposing Cryptovirology," John Wiley & Sons, ISBN: 0-7645-4975-8, Feb. 2004. [[ii]] Adam Young, Moti Yung, "A Key Recovery System as Secure as Factoring," CT-RSA Conference, 2004.
Views: 1119 securitylectures
Stream and block cipher Cryptography and Network security in HINDI.
Install Android app - https://play.google.com/store/apps/details?id=com.shalik.patel.cprogrammingsolution https://www.facebook.com/HTD-hub-250593705388294/?ref=br_rs Twitter - https://twitter.com/PatelShalik Hey, friends, I upload the videos in this channel in Hindi for Engineering student of UPTU and other universities for computer science and IT (information technology) students. like share and subscribe my channel ====================================================== Install C Programming Solution Android app - https://play.google.com/store/apps/details?id=com.shalik.patel.cprogrammingsolution ====================================================== ====================================================== My Career Planning android app - https://play.google.com/store/apps/details?id=guide.mycareer.com.rec.mycareer ====================================================== ====================================================== My Android App for my College Library (An Official App Of College Library) - https://play.google.com/store/apps/details?id=jrv.library.rec.reclibrary ====================================================== How to use android application - https://www.youtube.com/watch?v=1hMZCvl-JxM ====================================================== Contact me on Facebook - https://www.facebook.com/HTD-hub-250593705388294/?ref=br_rs ====================================================== Follow me on twitter - https://twitter.com/PatelShalik ======================================================
Top 10 Unbreakable Ciphers and Codes — TopTenzNet
Top 10 Unbreakable Ciphers and Codes →Subscribe for new videos every day! http://bit.ly/toptenzsubscribe →10 Reasons Bruce Lee was a Superhuman: http://bit.ly/1Hl4mVu Entertaining and educational top 10 lists from TopTenzNet! Brand new videos 7 days a week! Videos are published at 6pm EST every day! Other TopTenz Videos: Top 10 Historical Unsolved Mysteries http://bit.ly/1RAAE95 In an age where we have satellites that can zoom in to watch an ant pee on a leaf, you’d think our society pretty much knows everything. Even with our high-speed, touchscreen, 3-D, Star Wars projectors, there are still a few ciphers and codes keeping cryptologists (trust us, it’s a word) stumped. Some of them come from way back in the 18th century. Even with the addition of advanced technology, ye ol’ pilgrims are proving that the smartest thing about our society might just be our phones. Text version: http://www.toptenz.net/top-10-unbreakable-ciphers-codes.php Coming up: 10. Dorabella Cipher 9. D’Agapeyeff Cipher 8. Indus Script 7. Chinese Gold Bar Ciphers 6. Zodiac Killer 5. Linear A 4. Proto-Elamite 3. Taman Shud 2. McCormick Cipher 1. Bacon Cipher Source/Other reading: http://www.ciphermysteries.com/the-dorabella-cipher http://nautil.us/issue/6/secret-codes/the-artist-of-the-unbreakable-code http://www.ciphermysteries.com/2013/12/23/dagapeyeff-cipher http://itknowledgeexchange.techtarget.com/security-corner/the-unsolved-dagapeyeff-cipher/ http://www.harappa.com/script/indusscript.pdf http://elonka.com/UnsolvedCodes.html http://books.google.com/books?id=G4gCs-RmVZwC&pg=PA46&lpg=PA46&dq=General+Wang+unsolved+gold+bars&source=bl&ots=vrfYkpCHEz&sig=gwWoVvcHk5qecMsXwuLVmZoYKZU&hl=en&sa=X&ei=XU9_U-HGOtelyATduYDYDg&ved=0CHsQ6AEwBQ#v=onepage&q=General%20Wang%20unsolved%20gold%20bars&f=false http://listverse.com/2007/10/01/top-10-uncracked-codes/ http://www.crimelibrary.com/serial_killers/notorious/zodiac/8.html http://www.zodiologists.com/ http://mysteries24.com/n4-21061-Unsolved_coded_messages http://www.cam.ac.uk/research/news/cracking-the-code-the-decipherment-of-linear-b-60-years-on http://www.ancientscripts.com/elamite.html http://www.historytoday.com/mark-ronan/puzzle-proto-elamite http://www.heraldsun.com.au/news/law-order/portrait-may-hold-key-to-somerton-man-beach-mystery/story-fni0ffnk-1226674957043 http://www.ciphermysteries.com/2009/08/08/the-tamam-shud-cipher-mystery http://www.fbi.gov/news/stories/2011/march/cryptanalysis_032911/cryptanalysis_032911 http://www.riverfronttimes.com/2012-06-14/news/ricky-mccormick-code-mysterious-death-st-louis/ http://www.jstor.org/discover/10.2307/751135?uid=3739256&uid=2129&uid=2&uid=70&uid=4&sid=21103794245461 http://www.bibliotecapleyades.net/ciencia/esp_ciencia_manuscrito06.htm
Views: 86970 TopTenz
Advanced Crypto: ECB, CBC, CFB and OFB
Views: 15421 Bill Buchanan OBE
Letter Frequency of Ciphers
This video is part of the Udacity course "Intro to Information Security". Watch the full course at https://www.udacity.com/course/ud459
Views: 8389 Udacity
How To Read Text In Binary
http://tomscott.com - @tomscott - No, seriously. Here's how to read text when all you can see is a bunch of 0s and 1s. It's easier than it seems. I... I think I might have gone off the deep end a bit here.
Views: 1188509 Tom Scott
Cryptography Basics: Definitions, History & Attacks (Cryptography Crashcourse Part 1)
Book: Understanding Cryptography https://www.amazon.com/Understanding-Cryptography-Textbook-Students-Practitioners/dp/3642041000/ref=as_li_ss_tl?ie=UTF8&qid=1541146284&sr=8-1&keywords=Understanding+Cryptography:+A+Textbook+for+Students+and+Practitioners&linkCode=sl1&tag=julianhosp-20&linkId=8e14aad9056003d3eefcacb57c2e0b73&language=en_US ---------- New to cryptocurrencies? You might want to read this book first! http://cryptofit.community/cryptobook If you liked the video, subscribe to my channel, give a "thumbs up" and share this video to make the world together #cryptofit :) ► Subscribe: https://www.youtube.com/channel/UCseN... ► Cryptocurrency Exchange: https://www.binance.com/?ref=11272739 ► Hardware Wallet: http://www.julianhosp.com/hardwallet ► Ruben's Trinkgeld Adressen: Bitcoin: 3MNWaot64Fr1gRGxv4YzHCKAcoYTLXKxbc Litecoin: MTaGwg5EhKooonoVjDktroiLqQF6Rvn8uE --------------- ► Completely NEW? What is Blockchain, Bitcoin and Co? Get this book from me: https://www.amazon.com/Cryptocurrenci... ► Join our Facebook group: https://www.facebook.com/groups/crypt... ► iTunes Podcast: https://itunes.apple.com/sg/podcast/t... ► My website: http://www.julianhosp.com ---------------- My name is Dr. Julian Hosp or just Julian. My videos are about Bitcoin, Ethereum, Blockchain and crypto currencies in general, to avoid scam, rip-off and fraud especially in mining. I'm talking about how you can invest wisely and do it rationally and simply. My ultimate goal is to make people all around the world #CRYPTOFIT. I.E fit for this new wave of decentralization and blockchain. Have fun! ► Follow me here and stay in touch: Facebook: www.facebook.com/julianhosp/ Twitter: https://twitter.com/julianhosp Instagram: https://www.instagram.com/julianhosp/ Linkedin: https://www.linkedin.com/julianhosp
Views: 2253 Dr. Julian Hosp
Cryptography: The Science of Secrets with Brian Veicht
Brian Veitch discusses the science of secrets and techniques used to encrypt and decrypt secret messages. This video production is brought to you by STEM Read, powered by [email protected] Topics discussed include cryptography, the difference between cryptographers and cryptanalysts, cipher disks, frequency analysis, encryption, decryption, the story of Mary, Queen of Scotts, and modern uses of cryptography. This video was created to support learning and activities related to The Maze Runner, a STEM Read book by James Dashner. Play our game and learn more about cryptography.: http://smartspaceniu.net/cryptography-cracking-the-code/
Views: 722 NIU STEAM
Cryptography: The Math of the Public Private Key of RSA
Thanks to all of you who support me on Patreon. You da real mvps! $1 per month helps!! :) https://www.patreon.com/patrickjmt !! Part 1: https://youtu.be/PkpFBK3wGJc Please consider being a supporter on Patreon! https://www.patreon.com/patrickjmt Twitter: @Patrick_JMT In this video I show mathematically for RSA encryption works by going through an example of sending an encrypted message! If you are interested in seeing how Euclid's algorithm would work, check out this video by Emily Jane: https://www.youtube.com/watch?v=fz1vxq5ts5I A big thanks to the 'Making & Science team at Google' for sponsoring this video! Please like and share using hashtag #sciencegoals
Views: 42398 patrickJMT
Block Cipher Modes of Operation | ECB mode | Mode of operation of block cipher | Part 1 | Hindi Urdu
#askfaizan | #syedfaizanahmad Block Cipher Modes of Operation | CBC mode | Part 2 https://youtu.be/Q7LKmASkVSU Hill Cipher | Complete Algorithm with Example https://youtu.be/B0Q7w7Fd7ms Playfair Substitution Cipher https://youtu.be/w_xr7pj-O6c Monoalphabetic Substitution Cipher https://youtu.be/Hw1T7GOnVW0 Caesar Cipher | Caesar Substitution Cipher https://youtu.be/2N9GlhysYJw PlayList : Cryptography and Network Security : https://www.youtube.com/playlist?list=PLhwpdymnbXz7hvvqhqjIIG4tEdhAgQqll Block cipher processes the data blocks of fixed size If size of message is larger than block size. Then, the message is divided into a series of sequential message blocks. Multiple blocks of plaintext are encrypted using the same key, security issues arise. To apply a block cipher in a variety of applications, five modes of operation have been defined by NIST 1. Electronic Code Book Mode 2. Cipher Block Chaining Mode 3. Output Feedback Mode 4. Cipher Feedback Mode 5. Counter Mode The simplest mode is the electronic codebook (ECB) mode Plaintext is handled one block at a time Each block of plaintext is encrypted using the same key The ECB mode is deterministic If plaintext block P1, P2,…, Pm are encrypted twice under the same key, the output ciphertext blocks will be the same. CBC is technique in which the same plaintext block, if repeated, produces different ciphertext blocks Each plaintext block is XORed with the ciphertext block that was previously produced To produce the first block of ciphertext, an initialization vector (IV) is XORed with the first block of plaintext For decryption, IV data is XORed with first ciphertext block decrypted.
Views: 1387 Ask Faizan
11 Block Ciphers Modes of Operation (Summary)
Block Ciphers Modes of Operation Deterministic Electronic Code Book mode (ECB) Probabilistic Block Modes of Operation Cipher Block Chaining mode (CBC) Stream Modes of Operation Output Feedback mode (OFB) Cipher Feedback mode (CFB) Counter mode (CTR)
Views: 68 Erradi
Block Cipher Mode : Cipher Block Chaining (cbc)  Mode Explained in Hindi
📚📚📚📚📚📚📚📚 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: 6975 5 Minutes Engineering
Cipher Block Chaining (CBC)
An explanation on Cipher Block Chaining (CBC)
Views: 1502 JieHang Loh
9 Uncracked Codes & Undeciphered Scripts
Secret messages abound! Here are nine of the world’s most mysterious scripts and codes. Writing systems like Linear A, Rongorongo and Olmec hide ancient words we have yet to decipher. The Beale Ciphers and Kryptos deliberately transformed their messages into puzzles. The Voynich Manuscript buries its secrets beneath a strange script. Check out the photos for yourself! What do you think they say? For the difference between decipherment (cracking a script) and cryptanalysis (cracking a code), check out last week’s video: https://www.youtube.com/watch?v=3nMHtRaXN7U&list=UUMk_WSPy3EE16aK5HLzCJzw Creative Commons 3.0 images used for scripts and ciphers Music: Transition (audionautix.com)
Views: 91380 NativLang
TY BSc-IT - NS Unit 2 - Lec 1 - Symmetric Key Cryptography,Algo Types, algo modes
The point discussed in this lecture:- Q-1) Explain Symmetric Key Cryptography with diagram. Disadvantages of symmetric key: Q-2) Explain Algorithm Types 2.1. Stream cipher 2.2. Block Cipher Q-3) CONCEPTS OF CONFUSION AND DIFFUSION. Q-4) What is algorithm modes? 4.1. Electronic Code Book (ECB) Mode 4.2. Cipher Block Chaining (CBC) Mode 4.3. Cipher Feedback Mode (CFB) & concept of IV in CFB mode 4.4. Output Feedback (OFB) Mode 4.5. Counter (CTR) Mode Download NS Unit 1 notes from here:- https://drive.google.com/open?id=0B_0qcYrYEFTBTWN2U3V3NGNhbGc All other material by me @ this link:- https://drive.google.com/open?id=0B_0qcYrYEFTBWjVtbS0ydjJ1REU TYBScIT - Sem 5 - Paper Solutions from the year Oct'2012 - April'2017 https://drive.google.com/folderview?id=0B8LpZ5SvGPwrZ2RYckJ2OEpSMk0
Views: 928 Tirup Parmar
The Real Science of Forensics
In this episode of SciShow, we’re going to investigate a murder. But first, we’re going to have to learn all about forensics, the use of science in criminal law -- and the real-life version is a little different from what you might see on TV. Hosted by: Michael Aranda ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Justin Lentz, David Campos, Chris Peters, and Fatima Iqbal. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: https://www.eff.org/deeplinks/2014/04/fbi-plans-have-52-million-photos-its-ngi-face-recognition-database-next-year http://www.alternet.org/story/153664/5_things_you_should_know_about_the_fbi's_massive_new_biometric_database http://www.nytimes.com/2015/08/13/us/facial-recognition-software-moves-from-overseas-wars-to-local-police.html http://www.nytimes.com/2015/08/15/opinion/how-the-fbi-uses-facial-recognition-analysis.html?_r=2 http://www.theverge.com/2014/8/8/5982727/face-wreck-how-advanced-tech-comes-up-short-for-police http://science.howstuffworks.com/life/genetic/dna-evidence.htm http://www.scientific.org/tutorials/articles/riley/riley.html http://www.bbc.co.uk/science/0/20205874 http://www.mlo-online.com/articles/201404/str-typing-method-and-applications.php http://www.cstl.nist.gov/strbase/pub_pres/Butler_BiotechniquesSuppl_Oct2007.pdf http://electronics.howstuffworks.com/gadgets/high-tech-gadgets/facial-recognition1.htm http://www.mitchpileggi.net/Deep_Background/resources/forensics/bodies.htm https://books.google.com/books?id=adKcM055ERoC&pg=PT265 http://serendip.brynmawr.edu/biology/b103/f02/web2/wcarroll.html http://www.howtogeek.com/howto/43078/stop-believing-tvs-lies-the-real-truth-about-enhancing-images/ http://nzic.org.nz/ChemProcesses/biotech/12A.pdf
Views: 842140 SciShow
Modes of Operations
Subject:Computer Science Paper: Cryptography and network
Views: 4559 Vidya-mitra
What is INTEGRAL CRYPTANALYSIS? What does INTEGRAL CRYPTANALYSIS mean? INTEGRAL CRYPTANALYSIS meaning - INTEGRAL CRYPTANALYSIS definition - INTEGRAL CRYPTANALYSIS 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 In cryptography, integral cryptanalysis is a cryptanalytic attack that is particularly applicable to block ciphers based on substitution-permutation networks. It was originally designed by Lars Knudsen as a dedicated attack against Square, so it is commonly known as the Square attack. It was also extended to a few other ciphers related to Square: CRYPTON, Rijndael, and SHARK. Stefan Lucks generalized the attack to what he called a saturation attack and used it to attack Twofish, which is not at all similar to Square, having a radically different Feistel network structure. Forms of integral cryptanalysis have since been applied to a variety of ciphers, including Hierocrypt, IDEA, Camellia, Skipjack, MISTY1, MISTY2, SAFER++, KHAZAD, and FOX (now called IDEA NXT). Unlike differential cryptanalysis, which uses pairs of chosen plaintexts with a fixed XOR difference, integral cryptanalysis uses sets or even multisets of chosen plaintexts of which part is held constant and another part varies through all possibilities. For example, an attack might use 256 chosen plaintexts that have all but 8 of their bits the same, but all differ in those 8 bits. Such a set necessarily has an XOR sum of 0, and the XOR sums of the corresponding sets of ciphertexts provide information about the cipher's operation. This contrast between the differences of pairs of texts and the sums of larger sets of texts inspired the name "integral cryptanalysis", borrowing the terminology of calculus.
Views: 114 The Audiopedia
Stream Cipher And Block Cipher
Subject :Computer Science(PG) Course :Cryptography and Network Security Keyword : SWAYAMPRABHA
Elliot Carlson: Joe Rochefort's War: The Odyssey of the Codebreaker...
http://www.nationalww2museum.org/ As part of The General Raymond E. Mason, Jr. Distinguished Lecture Series on World War II, hear author Elliot Carlson discuss the story of Joe Rochefort, a Navy cryptanalyst. Captain Rochefort's code-breaking operations were instrumental in the war against the Japanese, particularly in the Battle of Midway. Elliot Carlson is the author of "Joe Rochefort's War: The Odyssey of the Codebreaker Who Outwitted Yamamoto at Midway."
Public key cryptography - Diffie-Hellman Key Exchange (full version)
The history behind public key cryptography & the Diffie-Hellman key exchange algorithm. We also have a video on RSA here: https://www.youtube.com/watch?v=wXB-V_Keiu8
Views: 640468 Art of the Problem
Applied Cryptography: Introduction to Modern Cryptography (1/3)
Previous video: https://youtu.be/XcuuUMJzfiE Next video: https://youtu.be/X7vOLlvmyp8
Views: 1230 Leandro Junes
💥 JWT HS256 Signature - Learn What is a Hash-Based Message Authentication Code (HMAC)
This video is part of the Angular Security MasterClass - Web Security Fundamentals Course - https://angular-university.io/course/angular-security-course In this lesson, we are going to learn the concept of a Message Authenticaton Code or MAC. We will cover the HS256 JWT signature which is a Hash Based Message Authentication Code, or HMAC. For more videos tutorials on Angular, check the Angular University website - https://angular-university.io Follow us: Twitter - https://twitter.com/AngularUniv Google+ - https://plus.google.com/u/1/113731658724752465218 Facebook - https://www.facebook.com/angular.university Check out the PDF E-Books available at the Angular University - https://angular-university.io/my-ebooks
Views: 6155 Angular University
CryptoGame Gameplay Trailer | Interactive Story and Cryptography Tools
"CryptoGame: Personal Edition": Available online as "The CryptoGame" - a cryptography based interactive fiction. Link: http://manansingh.github.io/crypto-game/ "CryptoGame: Server Edition" (for LAN in schools, universities): Contact - Department of Computer Science, Dev Sanskriti Vishwavidyalaya, DSVV, Haridwar, Uttarkhand, India. ABOUT CRYPTOGAME Cryptogame offers two things. One- A suite of 20+ Cryptography related Tools for a broad selection of ciphers - from classical to modern. Two- A text-based interactive storyline which engages the user in a chapter-wise series of cipher challenges, on solving which the player progresses in the story. Purpose: 1. To provide a set of Cryptography tools, using which teachers can demonstrate, and students can practice various cryptography techniques. 2. Engage and entertain the players via a realistic and fascinating storyline, and a set of highly specialized and interconnected cipher challenges. Only-CryptoLab Online Demo, Link: http://manansingh.github.io/Cryptolab-Offline/ Only-Cryptolab Download, Link: https://github.com/mananSingh/Cryptolab-Offline/archive/gh-pages.zip ---------------------------------- Trailer Music: Machinations by Technoillogical.
Views: 212 Manan Singh
DES Modes of Operations
This video discussed the 5 x Modes of Operations of Data Encryption Standard ( DES) i.e ECB, CBC, CFB, OFB, Ctr Modes.
Google IT Support Professional Certificate Course 6 - IT Security: Defense against the digital dark arts, Module 2 - Cryptology To get certificate subscribe at: https://www.coursera.org/specializations/google-it-support ================= The whole course playlist: Google IT Support Professional Certificate https://www.youtube.com/playlist?list=PL2jykFOD1AWZlfwMPcVKwaFrRXbqObI3U ================= IT Security https://www.youtube.com/playlist?list=PL2jykFOD1AWaEXEpyRf-Im3U8WQ962Y4B ================= https://www.facebook.com/cyberassociation/ https://scsa.ge/en/online-courses/ This six-course certificate, developed exclusively by Google, includes innovative curriculum designed to prepare you for an entry-level role in IT support. A job in IT can mean in-person or remote help desk work, either in a small business or at a global company, like Google. Whether you’ve been tinkering with IT or are completely new to the field, you’ve come to the right place. If you’re looking for a job, upon completion of the certificate, you can share your information with top employers, like Bank of America, Walmart, Sprint, GE Digital, PNC Bank, Infosys, TEKsystems, UPMC, and, of course, Google. Course 6 - IT Security: Defense against the digital dark arts About the Course This course covers a wide variety of IT security concepts, tools, and best practices. It introduces threats and attacks and the many ways they can show up. We’ll give you some background of encryption algorithms and how they’re used to safeguard data. Then, we’ll dive into the three As of information security: Authentication, authorization, and accounting. We’ll also cover network security solutions, ranging from firewalls to Wifi encryption options. The course is rounded out by putting all these elements together into a multi-layered, in-depth security architecture, followed by recommendations on how to integrate a culture of security into your organization or team. At the end of this course, you’ll understand: - how various encryption algorithms and techniques work and their benefits and limitations. - various authentication systems and types. - the difference between authentication and authorization. At the end of this course, you’ll be able to: - evaluate potential risks and recommend ways to reduce risk. - make recommendations on how best to secure a network. - help others to understand security concepts and protect themselves Who is this class for: This program is intended for beginners who are interested in developing the skills necessary to perform entry-level IT support. No pre-requisite knowledge is required. However, if you do have some familiarity with IT, you can skip through any content that you might already know and speed ahead to the graded assessments. Module 2 - Cryptology In the second module of this course, we'll learn about cryptology. We'll explore different types of encryption practices and how they work. We'll show you the most common algorithms used in cryptography and how they've evolved over time. By the end of this module, you'll understand how symmetric encryption, asymmetric encryption, and hashing work; you'll also know how to choose the most appropriate cryptographic method for a scenario you may see in the workplace. Learning Objectives • Understand the how symmetric encryption, asymmetric encryption, and hashing work. • Describe the most common algorithms of cryptography. • Choose the most appropriate cryptographic method given a scenario.
Views: 264 intrigano
5. What is the Difference Between Authentication and Authorization in PHP?
What is the Difference Between Authentication and Authorization in PHP
What is Encryption and Decryption ? | Concept Explained (in Hindi)
In this video we will discuss about encryption and decryption. How these things works and why we need these. Watch the full video to know more about this topic. Like the video and please share with your friends. Subscribe to my channel for more video like this and to support my effort. Catch me on Social Networking Websites Like my Facebook Page: https://www.facebook.com/technicalsagarindia Twitter: https://twitter.com/iamasagar
Views: 127236 Technical Sagar
International Journal on Cryptography and Information Security ( IJCIS)
International Journal on Cryptography and Information Security (IJCIS) ISSN : 1839-8626 http://airccse.org/journal/ijcis/index.html Scope & Topics International Journal on Cryptography and Information Security ( IJCIS) is an open access peer reviewed journal that focuses on cutting-edge results in applied cryptography and Information security. It aims to bring together scientists, researchers and students to exchange novel ideas and results in all aspects of cryptography, coding and Information security. Topics of interest include, but are not limited to the following: • Cryptographic protocols • Cryptography and Coding • Untraceability • Privacy and authentication • Key management • Authentication • Trust Management • Quantum cryptography • Computational Intelligence in Security • Artificial Immune Systems • Biological & Evolutionary Computation • Intelligent Agents and Systems • Reinforcement & Unsupervised Learning • Autonomy-Oriented Computing • Coevolutionary Algorithms • Fuzzy Systems • Biometric Security • Trust models and metrics • Regulation and Trust Mechanisms • Data Integrity • Models for Authentication, Trust and Authorization • Wireless Network Security • Information Hiding • E- Commerce • Data & System Integrity • Access Control and Intrusion Detection • Intrusion Detection and Vulnerability Assessment • Authentication and Non-repudiation • Identification and Authentication • Insider Threats and Countermeasures • Intrusion Detection & Prevention • Secure Cloud Computing • Security Information Systems Architecture and Design and Security Patterns • Security Management • Security Requirements (threats, vulnerabilities, risk, formal methods, etc.) • Sensor and Mobile Ad Hoc Network Security • Service and Systems Design and QoS Network Security • Software Security • Security and Privacy in Mobile Systems • Security and Privacy in Pervasive/Ubiquitous Computing • Security and Privacy in Web Sevices • Security and Privacy Policies • Security Area Control • Security Deployment • Security Engineering • Security for Grid Computing • Security in Distributed Systems Paper Submission Authors are invited to submit papers for this journal through E-mail : [email protected] . Submissions must be original and should not have been published previously or be under consideration for publication while being evaluated for this Journal. For other details please visit http://airccse.org/journal/ijcis/index.html
Views: 32 ijcis journal
What is STEGANOGRAPHY? What does STEGANOGRAPHY mean? STEGANOGRAPHY meaning & explanation
What is STEGANOGRAPHY? What does STEGANOGRAPHY mean? STEGANOGRAPHY meaning - STEGANOGRAPHY pronunciation - STEGANOGRAPHY definition - STEGANOGRAPHY explanation - How to pronounce STEGANOGRAPHY? Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The word steganography combines the Greek words steganos, meaning "covered, concealed, or protected", and graphein, meaning "writing". The first recorded use of the term was in 1499 by Johannes Trithemius in his Steganographia, a treatise on cryptography and steganography, disguised as a book on magic. Generally, the hidden messages appear to be (or be part of) something else: images, articles, shopping lists, or some other cover text. For example, the hidden message may be in invisible ink between the visible lines of a private letter. Some implementations of steganography that lack a shared secret are forms of security through obscurity, whereas key-dependent steganographic schemes adhere to Kerckhoffs's principle. The advantage of steganography over cryptography alone is that the intended secret message does not attract attention to itself as an object of scrutiny. Plainly visible encrypted messages—no matter how unbreakable—arouse interest, and may in themselves be incriminating in countries where encryption is illegal. Thus, whereas cryptography is the practice of protecting the contents of a message alone, steganography is concerned with concealing the fact that a secret message is being sent, as well as concealing the contents of the message. 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. Media files are ideal for steganographic transmission because of their large size. For example, a sender might start with an innocuous image file and adjust the color of every 100th pixel to correspond to a letter in the alphabet, a change so subtle that someone not specifically looking for it is unlikely to notice it. Discussions of steganography generally use terminology analogous to (and consistent with) conventional radio and communications technology. However, some terms show up in software specifically, and are easily confused. These are most relevant to digital steganographic systems. The payload is the data covertly communicated. The carrier is the signal, stream, or data file that hides the payload—which differs from the channel (which typically means the type of input, such as a JPEG image). The resulting signal, stream, or data file with the encoded payload is sometimes called the package, stego file, or covert message. The percentage of bytes, samples, or other signal elements modified to encode the payload is called the encoding density, and is typically expressed as a number between 0 and 1. In a set of files, those files considered likely to contain a payload are suspects. A suspect identified through some type of statistical analysis might be referred to as a candidate.
Views: 5696 The Audiopedia
Short description of non-repudiation
Gematria For Beginners: The Art and Science Behind Jewish Numerology
We all know -- and science is making it increasingly clear -- that what you see is not what you get: There are multiple dimensions to life and all of existence; layers upon layers with no definitive end in sight. How far down does the rabbit hole go? Can we strip the outer layers and peer beneath the surface? Gematria -- or numerology -- is one of the tools we've been gifted with to help us examine and dissect the inner workings of existence. The numerical equivalent of any given word or name reveals its deeper meaning. No wonder so many are intrigued by the study of gematria. What is the numerology of my name, and what secrets does it hold about me? Please join Rabbi Jacobson for a journey down the "rabbit hole" and discover the elegant art and science of gematria. Learn the rules of how it works, what it means, explore the mysterious "numbers of your name", and your inner workings... Join the journey and see how your gematria can enhance your life, your relationships, and your destiny. WHERE TO FIND THE MEANINGFUL LIFE CENTER: WEBSITE: http://www.meaningfullife.com FACEBOOK PAGE: https://www.facebook.com/MeaningfulLifeCenter TWITTER: http://www.twitter.com/MeaningfulLife LINKEDIN: http://www.linkedin.com/simonjacobson1 YOUTUBE CHANNEL: http://www.youtube.com/in/meaningfullife PINTEREST: http://www.pinterest.com/meaningful EMAIL US: [email protected]
Views: 81134 Meaningfullife
Cryptanalysis of Classical Ciphers
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: 13411 nptelhrd
Cipher Block Chaining Mode - Applied Cryptography
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 64126 Udacity
Introducing CODE | Celebrating Our Diverse Employees
Introducing CODE: Celebrating Our Diverse Employees | Our mission is to strengthen our relationships with our colleagues, our clients and our communities through celebrating ethnic and cultural diversity for the development of our people, our communities and our organization. We achieve our mission by partnering internally with Slalom Affinity Groups (or the local Slalom market) and People Experience (Talent Management, Talent Acquisition etc.), and externally with client organizations and our communities to embed diversity and inclusion into how we attract, grow, and engage our employees. To learn more about opportunities to join our team go to: https://slalom.secure.force.com/careers
Views: 561 Slalom
Cipher Feedback Mode - Applied Cryptography
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 37844 Udacity