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Five* non-cryptographic hash functions enter. One hash function leaves.
 
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Adam Harvey https://linux.conf.au/schedule/30208/view_talk When you say “hash function” in a room full of developers, people tend to think of the classics: MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, SHA-OHGODPLEASESTOP, and the like — cryptographic hash functions intended for cryptographic uses. There’s another world out there, though: non-cryptographic hashes. Sometimes you just need to figure out if you’ve already seen a string or structure. Sometimes you need a basic checksum. Sometimes you need a hash that’s just fast and can fit into a 32 bit integer. I’ll run through the state of the art in the world of non-cryptographic hashing — what your best options are, how they compare in terms of CPU and memory usage, and how they work. Who takes it? Whose mixing function reigns supreme? Let’s find out. * I’m saying “five”, but realistically I’m going to cover as many modern options as I can fit into the time available. Let’s say “five plus or minus two” in reality.
Introduction to Hashing Using Command Line in Linux
 
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Author: Jeremy Druin Twitter: @webpwnized Description: A light introduction using Linux command line tools to hash text and files. This is a practical use demonstration only. There is no cryptography theory discussed. Thank you for watching. Please support this channel. Up vote, subscribe or even donate by clicking "Support" at https://www.youtube.com/user/webpwnized! The webpwnized YouTube channel is dedicated to information security, security testing and ethical hacking. There is an emphasis on web application security but many other topics are covers. Some of these include forensics, network security, security testing tools and security testing processes. The channel provides videos to encourage software developers and system administrators to perform security testing. Also, the channel educates the next generation of security testers and bug bounty hunters who want to respectfully, legally and ethically help system owners that allow security testing.
Views: 1689 webpwnized
How Password Hashes Work in Linux, and Scripting Password Changes with Hashes
 
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Covers /etc/shadow, salts, hashes, using chpasswd to change passwords directly with hashes in scripts, generating sha512 hashes with python, copying hashes between servers, etc.
Python Hash-Decrypter Program | Decode Hash Encryption 🔐
 
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Hello Friends, In This Video, I'm Gonna Show You How You Can Encrypt & Decrypt The Hash String With The Help Of Hashlib Python Module Python-Hash-Cracker Program - https://goo.gl/zs3ikD HASHING : - If you need secure hashes or message digest algorithms, then Python’s standard library has you covered in the hashlib module. It includes the FIPS secure hash algorithms SHA1, SHA224, SHA256, SHA384, and SHA512 as well as RSA’s MD5 algorithm. Python also supports the adler32 and crc32 hash functions, but those are in the zlib module. One of the most popular uses of hashes is storing the hash of a password instead of the password itself. Of course, the hash has to be a good one or it can be decrypted. Another popular use case for hashes is to hash a file and then send the file and its hash separately. Then the person receiving the file can run a hash on the file to see if it matches the hash that was sent. If it does, then that means no one has changed the file in transit Cryptographic hashes are used in day-day life like in digital signatures, message authentication codes, manipulation detection, fingerprints, checksums (message integrity check), hash tables, password storage and much more. They are also used in sending messages over a network for security or storing messages in databases. There are many hash functions defined in the “hashlib” library in python. Some of the most used hash functions are: MD5: Message digest algorithm producing a 128 bit hash value. This is widely used to check data integrity. It is not suitable for use in other fields due to the security vulnerabilities of MD5. SHA: Group of algorithms designed by the U.S's NSA that are part of the U.S Federal Information processing standard. These algorithms are used widely in several cryptographic applications. The message length ranges from 160 bits to 512 bits. Functions associated : encode() : Converts the string into bytes to be acceptable by hash function. digest() : Returns the encoded data in byte format. hexdigest() : Returns the encoded data in hexadecimal format. ----------------------------------------------------------------------------------------------------------- Hope This Video Is Helpful For You ► Connect with me! ◄ Facebook - http://bit.ly/2tbOg3b Google+ - http://bit.ly/2jrWz6g Instagram - http://bit.ly/2tbR14z Reddit - https://bit.ly/2J5Vqfm ★★★Watch my most recent videos playlist★★★ Kali Linux - https://goo.gl/36M3JD Deep Web - https://goo.gl/7ueKNh Python Coding - https://goo.gl/dCtyrS Java Coding - https://goo.gl/oxFo8W Basic Computer - https://goo.gl/kwFXM3 Hacking - https://goo.gl/vjT916 Games Benchmark - https://goo.gl/eshw3T Gaming - https://goo.gl/mLuQwf Notepad Tricks -https://goo.gl/3uapMJ CMD Tricks - https://goo.gl/x1KH8C Facebook Tricks - https://goo.gl/1JV9Fz Problem Solved - https://goo.gl/eJwjXq Gmail Tricks - https://goo.gl/fSpbaB And talking about subscribing, please subscribe to my channel, if you enjoyed this video and want more how-to, Thanks so much for watching!
Views: 9957 Mighty Ghost Hack
Password Hashing, Salts, Peppers | Explained!
 
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Views: 69084 Seytonic
how to calculate hash value in ubuntu || sha1 md5 sha256
 
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A hash function is any function that can be used to map data of arbitrary size to data of fixed size. The values returned by a hash function are called hash values, hash codes, digests, or simply hashes. One use is a data structure called a hash table, widely used in computer software for rapid data lookup. source:-https://en.wikipedia.org/wiki/Hash_function -------------------------------------------------------------------------------------------------- sha1sum {file} sha256sum {file} md5sum {file} --------------------------------------------------------------------------------------------------
Views: 1665 Tech ind
Cryptography And Hash Algorithms: Tech, Linux, & Hacker Culture : Episode 009
 
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- What are hash algorithms? - What is a cryptographic has algorithm? - Degree of difficulty - Uses for hashes - Types of hashes algorithms This podcast is all about technology, Linux, open source, and the traditional hacker culture. RSS Feed: https://anchor.fm/s/13249c4/podcast/rss
Views: 25 J. R. Swab
C/C++ Cryptography — Simple Hashing Algorithm | Simple Hash Function
 
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• Support me on Patreon: http://www.patreon.com/Zer0Mem0ry • Donate Bitcoin: 1JhSKGgRQmir8rRF4Sm5CP4fDDofKFAypd • Facebook: https://www.facebook.com/Zer0Mem0ry • Twitter: https://www.twitter.com/Zer0Mem0ry
Views: 10158 Zer0Mem0ry
How to Crack Encrypted Hash Password - Using John The Ripper
 
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Hello Friends In this video I will talk about How to Crack Encrypted Hash Password - Using John The Ripper. ------------------------------------------------------------------------------------- Start Your Hacking Career with my video courses ! ------------------------------------------------------------------------------------- Do Leave A Like And Subscribe For More Awesome Videos Like This Daily ! -------------------------------------------------------------------------------------------------- Support Us :- https://www.paypal.me/AkashChugh Follow us on Website - http://www.techtrick.in Follow us on facebook- https://www.facebook.com/ByAkashChugh/ Follow us on twitter- https://twitter.com/ByAkashChugh Follow us on google+- https://plus.google.com/108843834041933059587 Follow us on Linkedin - https://www.linkedin.com/in/akash-chugh-712045124/ ------------------------------------------------------------------------------------------------ Disclaimer All the tricks and tips that TechTrick provides only for educational purpose. If you choose to use the information in TechTrick to break into computer systems maliciously and without authorization, you are on your own. Neither I (TechTrick Admin) nor anyone else associated with TechTrick shall be liable. We are not responsibe for any issues that caused due to informations provided here. So, Try yourself and see the results. You are not losing anything by trying... We are humans, Mistakes are quite natural. Here on TechTrick also have many mistakes.. ------------------------------------------------------------------------------------------------ Thanks and Love TechTrick! LIKE | COMMENT | SHARE | SUBSCRIBE #johntheripper #encryptedhashpassword #hashpassword #johntherippercrack #crackencryptedhash
Views: 3758 TechTrick
Hashing Demonstration
 
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Short demonstration illustrating use of the md5 and sha1sum commands, as well as an md5 hash collision
Views: 1887 Mike Murphy
How To Use MD5SUM To Verify Data Integrity On Ubuntu Linux
 
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How To Use MD5SUM To Verify Data Integrity On Ubuntu Linux MD5 Sums are 128-bit character strings (numerals and letters) resulting from running the MD5 algorithm against a specific file. A simple tool called md5sum is used for working with hashes in Linux. It allows hashes to be created and compared using the MD5 hash function. md5sum comes installed by default in Ubuntu and virtually every other Linux distribution. 🌸 Support channel & make donation : https://www.paypal.me/aminenina/5 🌸 Subscribe for more videos : Youtube: https://www.youtube.com/user/aminosninatos 🌸 Follow me On Social Media Facebook : https://www.facebook.com/aminosninatos/ *********************************************************************** 🌸 How To Convert Public Private Putty's ppk Keys To OpenSSH Keys On Ubuntu Linux https://youtu.be/3aApOFQL44o 🌸 How To Use GPG Private Public Keys To Encrypt And Encrypt Files On Ubuntu Linux https://youtu.be/I-4dcpTDWys 🌸 How To Encrypt And Decrypt Files Using Private Public Keys With OpenSSL On Ubuntu Linux https://youtu.be/g9XN1-bANKU 🌸 How To Encrypt And Decrypt Files Using OpenSSL On Ubuntu Linux https://youtu.be/YU1AI62khIY 🌸 How To Use MD5SUM To Verify Data Integrity On Ubuntu Linux https://youtu.be/V1fgjXRFB2k 🌸 How To Generate Random Password From The Command Line On Ubuntu Linux https://youtu.be/TQ4QMJWVd8U 🌸 Linux How To Crack And Recover A Password Protected Zip File https://youtu.be/C9a6BPxUN_4 🌸 Password cracking with John the Ripper on Linux https://youtu.be/KK2bNgX1mRA 🌸 Linux : HowTo Encrypt And Decrypt Files With A Password using GPG https://youtu.be/a91v1bz_ZU4 🌸 How To Secure Copy Files In Linux Using SCP Command https://youtu.be/3Y8pVDhc3RQ 🌸 How To Sync And Backup Files In Linux Using Rsync Command https://youtu.be/aIMbg7vG6Rg ***********************************************************************
Views: 347 Liv4IT
Retrive password Hash from linux box and Windows
 
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Simple video show you how to find Hash next video will teach you how to crack https://www.facebook.com/TijiNostalgia
Views: 1774 Cyberlove's Security
Cracking a Password Hash with John (JTR)
 
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Here I show you how to crack a number of MD5 password hashes using John the Ripper (JTR), John is a great brute force and dictionary attack tool that should be the first port of call when password cracking.
Views: 70550 Latest Hacking News
Salted Password Scheme - 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: 15004 Udacity
C Programming in Linux Tutorial #063 - Hash Program
 
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C Programming in Linux Tutorial using GCC compiler. Tutorial should also be applicable in C/UNIX programming. An example on how to create a hash program.
Views: 7945 ShellWave
Hashing MD5 - SHA1 - SHA256 -SHA512 | Windows & linux & MAC OSX
 
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Sencillo programa de código abierto multiplataforma que permite, comparaciones de archivos, mediante hash, comparaciones de carpetas, discos y volúmenes de unidades (como administrador), datos de Base64, así como permitir que los archivos en una carpeta se copien en otra con hashing de datos realizado en cualquier lado para comparaciones e integridad de datos. Link de DESCARGA - http://adpop.me/LlSbBB Link Proyecto en GitHub -http://adpop.me/F3hd Que es y para que sirve una función HASH http://adpop.me/D3SoY45 Los algoritmos de hash MD5, SHA1, SHA256, SHA512 y xxHash están disponibles. Originalmente fue diseñado para Linux, pero también está disponible para Windows y Apple Mac OSX.
Views: 605 BLESSED
Hash Function
 
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I cover what a hash function is, 2 of the many use cases for it, passwords and file differences, and show some examples in code.
Views: 311 Jesse Warden
How To Encrypt And Decrypt Files Using OpenSSL On Ubuntu Linux
 
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How To Encrypt And Decrypt Files Using OpenSSL On Ubuntu Linux OpenSSL is a program and library that supports many different cryptographic operations, including: Symmetric key encryption Public/private key pair generation Public key encryption Hash functions Certificate creation Digital signatures Random number generation The most common cryptographic operation is encryption. Lets encrypt some files using selected symmetric key (conventional) ciphers such as DES, 3DES and AES. 🌸 Support channel & make donation : https://www.paypal.me/aminenina/5 🌸 Subscribe for more videos : Youtube: https://www.youtube.com/user/aminosninatos 🌸 Follow me On Social Media Facebook : https://www.facebook.com/aminosninatos/ *********************************************************************** 🌸 How To Convert Public Private Putty's ppk Keys To OpenSSH Keys On Ubuntu Linux https://youtu.be/3aApOFQL44o 🌸 How To Use GPG Private Public Keys To Encrypt And Encrypt Files On Ubuntu Linux https://youtu.be/I-4dcpTDWys 🌸 How To Encrypt And Decrypt Files Using Private Public Keys With OpenSSL On Ubuntu Linux https://youtu.be/g9XN1-bANKU 🌸 How To Encrypt And Decrypt Files Using OpenSSL On Ubuntu Linux https://youtu.be/YU1AI62khIY 🌸 How To Use MD5SUM To Verify Data Integrity On Ubuntu Linux https://youtu.be/V1fgjXRFB2k 🌸 How To Generate Random Password From The Command Line On Ubuntu Linux https://youtu.be/TQ4QMJWVd8U 🌸 Linux How To Crack And Recover A Password Protected Zip File https://youtu.be/C9a6BPxUN_4 🌸 Password cracking with John the Ripper on Linux https://youtu.be/KK2bNgX1mRA 🌸 Linux : HowTo Encrypt And Decrypt Files With A Password using GPG https://youtu.be/a91v1bz_ZU4 🌸 How To Secure Copy Files In Linux Using SCP Command https://youtu.be/3Y8pVDhc3RQ 🌸 How To Sync And Backup Files In Linux Using Rsync Command https://youtu.be/aIMbg7vG6Rg ***********************************************************************
Views: 1164 Liv4IT
OpenSSL : md5 hash, HMAC and RSA signature
 
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Demo of md5 hash, HMAC and RSA signature using Openssl toolkit in Ubuntu.
MD5 hash cracker on Kali linux 2016.2 ✔ *
 
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MD5 hash cracker on Kali linux 2016.2 PyBozoCrack - A effective MD5 cracker in Python for cracking md5 hash passwords. Hi viewers, Today in this tutorial i'm gonna show you how to crack any md5 hash password very easily with md5 cracker tool name pybozocrack python script on kali linux 2016.2 It's can crack almost any md5 hash password. What is MD5 Hash? MD5 is an algorithm that is used to verify data integrity through the creation of a 128-bit message digest from data input (which may be a message of any length) that is claimed to be as unique to that specific data as a fingerprint is to the specific individual. The MD5 algorithm is a widely used hash function producing a 128-bit hash value. Although MD5 was initially designed to be used as a cryptographic hash function, it has been found to suffer from extensive vulnerabilities. ... Like most hash functions, MD5 is neither encryption nor encoding. #PyBozoCrack PyBozoCrack is a depressingly effective MD5 password hash cracker with almost zero CPU/GPU load written in Python. Instead of rainbow tables, dictionaries, or brute force, PyBozoCrack simply finds the plaintext password. Specifically, it googles the MD5 hash and hopes the plaintext appears somewhere on the first page of results. Download : https://github.com/ikkebr/PyBozoCrack.git Don't misuse it. STAY LEGAL!!! Educational purpose only ! DON'T FORGET TO SUBSCRIBE!!! Thank You!!!
Views: 901 The Shadow Brokers
What is a Hash? / Verifying a Hash
 
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What a hashing function is and why it's important. In this video we are using the SHA-256 hashing algorithm, which was developed by the NSA, in cryptography we generally abide ;) https://voluntary.net/bitmarkets/ Bitmarkets is a peer-to-peer market place that features a two party escrow as opposed to the traditional 3 party escrow
Views: 654 #Blocktalk
How to calculate hash value of any file and hard drive in linux operating system | Digital Forensics
 
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What is hash and how to extract hash values from files? In this video, you are going to see a small briefing about the hash concept when you are working with files specifically. This is generally known as the first step in cyber/digital forensics. In this tutorial you can learn to calculate hash value through linux operating system For more tutorials: Subscribe us Website: http://cyberops.in Facebook Page: https://fb.com/cyberops.infosec Twitter Handler : https://twitter.com/cyberops_in
Views: 1157 Cyberops Infosec
Cryptography Hash Functions (CSS322, L18, Y14)
 
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Introduction to hash functions and the properties required for their use in cryptography; Examples of MD5 and SHA of files, including a collision. Course material via: http://sandilands.info/sgordon/teaching
Views: 830 Steven Gordon
Python Encryption Tutorial with PyCrypto
 
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Sentdex.com Facebook.com/sentdex Twitter.com/sentdex How to use python to encrypt sensitive information, and later decrypt it, using PyCrypto! PyCrypto: https://www.dlitz.net/software/pycrypto/ The Code: http://sentdex.com/sentiment-analysisbig-data-and-python-tutorials/encryption-and-decryption-in-python-code-example-with-explanation/
Views: 88793 sentdex
How To Generate A Password Hash With Salt Via the Command OpenSSL On Linux
 
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How To Generate A Password Hash With Salt Via the Command OpenSSL On Linux For security reasons, you may want to store passwords in hashed form. This guards against the possibility that someone who gains unauthorized access to the database can retrieve the passwords of every user in the system. Hashing performs a one-way transformation on a password, turning the password into another String, called the hashed password. 🌸 Support channel & make donation : https://www.paypal.me/aminenina/5 🌸 Subscribe for more videos : Youtube: https://www.youtube.com/user/aminosninatos 🌸 Follow me On Social Media Facebook : https://www.facebook.com/aminosninatos/ *********************************************************************** 🌸 How To Convert Public Private Putty's ppk Keys To OpenSSH Keys On Ubuntu Linux https://youtu.be/3aApOFQL44o 🌸 How To Use GPG Private Public Keys To Encrypt And Encrypt Files On Ubuntu Linux https://youtu.be/I-4dcpTDWys 🌸 How To Encrypt And Decrypt Files Using Private Public Keys With OpenSSL On Ubuntu Linux https://youtu.be/g9XN1-bANKU 🌸 How To Encrypt And Decrypt Files Using OpenSSL On Ubuntu Linux https://youtu.be/YU1AI62khIY 🌸 How To Use MD5SUM To Verify Data Integrity On Ubuntu Linux https://youtu.be/V1fgjXRFB2k 🌸 How To Generate Random Password From The Command Line On Ubuntu Linux https://youtu.be/TQ4QMJWVd8U 🌸 Linux How To Crack And Recover A Password Protected Zip File https://youtu.be/C9a6BPxUN_4 🌸 Password cracking with John the Ripper on Linux https://youtu.be/KK2bNgX1mRA 🌸 Linux : HowTo Encrypt And Decrypt Files With A Password using GPG https://youtu.be/a91v1bz_ZU4 🌸 How To Secure Copy Files In Linux Using SCP Command https://youtu.be/3Y8pVDhc3RQ 🌸 How To Sync And Backup Files In Linux Using Rsync Command https://youtu.be/aIMbg7vG6Rg ***********************************************************************
Views: 222 Liv4IT
Using File Hashes/Checksums to Compare Files on Linux
 
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Video #12 in my daily Linux Video series. Today we cover using file hashes/checksums such as md5sum, sha1sum, sha512sum, etc. to compare files on Linux servers, especially when comparing files on different servers.
Using MD5/SHA256 Hashes to Verify File Integrity
 
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Windows PowerShell command: Get-FileHash [-Algorithm MD5] .\filename Remove the bracket if you want to use MD5 instead of the default SHA256. Make sure you are either navigated to your desired file’s directory using the “cd” command or you input the full path to the file. A full path looks like “C:\Program Files\Mozilla\firefox.exe” and a ‘current directory’ file has to have the “.\” appended to the filename. In the years that I have spent downloading files from the internet, I have learned that it is important to check the integrity of major files. The common user does not know and understand hashing, but this isn't your Grandma's house.
Views: 17327 odah
"HOW to Decrypt PASSWORDS(encrypted in  functions like MD5,SHA256,SHA512..etc)   in Kali-Linux"
 
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"HOW to Decrypt PASSWORDS(encrypted in functions like MD5,SHA256,SHA512..etc) in Kali-Linux" Using HASHCAT TOOLS. md5 hash link: http://www.md5.cz/ sha512 hash link: http://passwordsgenerator.net/sha512-hash-generator/ official hashcat link : https://hashcat.net/hashcat/
Views: 1930 Lonewolf
How SSH key Works ?
 
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What is SSH key pair? Why we need SSH key? How SSH key works? Authentication via ssh key pair. Generate and Use SSH key : https://goo.gl/hK9h54 Become My Patron here https://goo.gl/NcvDQh You can donate any amount via Paypal follow this link https://goo.gl/JhWsKC ============================================== Deploy Laravel on Digital Ocean Full series: 1. Log Into Server via SSH ? https://youtu.be/hlZk0BkX6XY 2. High Server Security https://youtu.be/T7WinEDS7e4 3. Install LEMP stack on Ubuntu server https://youtu.be/QY_eT7wBqwA 4. Install Laravel via Github on server https://youtu.be/oRGoN-2G-7w ============================================== Join Our Slack Community - https://goo.gl/pqCjZH --You May Also Like -- Real Time Chat Series - https://goo.gl/ri42FD Git ans Github series - https://goo.gl/BXyPxf Blog with Admin panel Series - https://goo.gl/S5JGyt Laravel Authentication Series: Multi Auth - https://goo.gl/TyCLlX Vue Beginner To advanced Series - https://goo.gl/1bjdGg Sublime Text Best Package Series - https://goo.gl/6phTPP Laravel Ajax Todo Project - https://goo.gl/p2xTPW Laravel 5.4 Full Beginner Playlist - https://goo.gl/zpKzhM Laravel 5.3 Hindi Beginner Tutorials - https://goo.gl/Kb3ikd Full Playlist for the "Laravel 5.3 Hindi Beginner Tutorials" Series: https://www.youtube.com/playlist?list=PLe30vg_FG4OS38IkXcimlq7bI1mzD8wB- ==================FOLLOW ME ================== Subscribe for New Releases! Twitter - https://twitter.com/bitfumes Facebook - https://www.facebook.com/Bitfumes/ Instagram - https://www.instagram.com/bitfumes/ (ask me questions!) --- QUESTIONS? --- Leave a comment below and I or someone else can help you. For quick questions you may also want to ask me on Twitter, I respond almost immediately. Email me [email protected] Thanks for all your support! LARAVEL 5.4 Tutorial | Cara Instal LARAVEL 5,4 dari awal Part 1 | Bitfumes Laravel 5.4 Tutorial | Come installare laravel 5,4 da zero Parte 1 | Bitfumes -~-~~-~~~-~~-~- Please watch: "Laravel 5.4 Tutorial | Email From Server (Godaddy) #3 | Part 26 | Bitfumes" https://www.youtube.com/watch?v=QQqJUypWctU -~-~~-~~~-~~-~- que es api ما هو أبي o que é api
Views: 45889 Bitfumes Webnologies
Public Key Cryptography - Computerphile
 
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Spies used to meet in the park to exchange code words, now things have moved on - Robert Miles explains the principle of Public/Private Key Cryptography note1: Yes, it should have been 'Obi Wan' not 'Obi One' :) note2: The string of 'garbage' text in the two examples should have been different to illustrate more clearly that there are two different systems in use. http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer 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: 441309 Computerphile
Bao, a general purpose cryptographic tree hash, and perhaps the fastest hash function in the world
 
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Project: https://github.com/oconnor663/bao Slides: https://jacko.io/bao_presentation/presentation.html Event URL: https://www.meetup.com/Rust-NYC/events/256499782 This is the talk I gave at the Rust NYC meetup on November 27, 2018. Speed demos are at 3m48s and 43m08s, and the encoding/decoding demo ("Barney the Demosaur") starts at 12m36s.
Views: 984 Jack O'Connor
IOTA tutorial 18: Merkle Tree
 
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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 18 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 provide you with some basic knowledge about the Merkle tree. The Merkle tree is used in IOTA's Masked Authenticated Messaging. IOTA's Masked Authenticated Messaging will be explained in IOTA tutorial 19. A hash tree or Merkle tree is a tree structure in which each leaf node is a hash of a block of data and each non-leaf node is a hash of its children. This results in a single hash called the Merkle root. If every node has two children, the tree is called a binary hash tree. Why use a Merkle tree? Why not hash all messages (m0-m15), append the hashed messages and then hash it all to get one root hash value. Bob get the root hash from a trusted source. If Alice wants to proof to Bob that m6 is not tampered with, she needs to send message m6 and all other hashed values: H(m0), H(m1), H(m2), H(m3), H(m4), H(m5), H(m7), H(m8), H(m9), H(m10), H(m11), H(m12), H(m13), H(m14) and H(m15) to Bob. Bob hashes message m6, append all hashes to a single string and hash this string to get one root hash. Bob compares this new root hash with the trusted source root hash to check if message m6 is not tampered with. In this example Alice has to provide 15 hashed values and the message m6 to Bob to prove that message m6 is not tampered with. A much better solution is using a Merkle tree (16 leaves) Again as before Bob gets the root hash from a trusted source. If Alice wants to proof that m6 is not tampered with, she needs to send m6 and 4 hashed values to Bob. With the received information Bob calculates the root hash value. Bob compares this root hash with the trusted source root hash to check if message m6 is not tampered with. In this example Alice only needs to provide 4 hashed values and the message m6 to Bob to prove that message m6 is not tampered with. Using a Merkle tree provides integrity and validity of your data using a small amount of data that a trusted authority has to maintain. This also means little memory / disk space is needed. If a Merkle tree has more leaves less hashed values are needed, in comparison to the number of leaves, to validate if a message is not tampered with. A perfect Merkle binary tree has the following properties: - The number of leaves is always 2n (n=0, 1, 2, 3,..). - Each node has 0 or 2 children. - All leaves are on the same level. In a perfect binary tree the following formulas can be applied: Total number of leaves = L = (N + 1) / 2 Total number of nodes = N = 2L - 1 Total number of levels = LV = log2(L) + 1 = (ln(L) / ln(2)) + 1 Number of leaves = L = 1 Number of nodes = N = 1 Number of levels = LV = 1 Number of leaves = L = 2 Number of nodes = N = 3 Number of levels = LV = 2 Number of leaves = L = 4 Number of nodes = N = 7 Number of levels = LV = 3 Number of leaves = L = 8 Number of nodes = N = 15 Number of levels = LV = 4 Number of leaves = L = 16 Number of nodes = N = 31 Number of levels = LV = 5 Check out all my other IOTA tutorial videos: https://goo.gl/aNHf1y Subscribe to my YouTube channel: https://goo.gl/61NFzK 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: 9910 Mobilefish.com
How to Convert MD5 Hash Value To Plain Text
 
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Hello Friends in This Video We Will learn About How to create A Strong Password And Convert MD5 Hash Value to Plain Text Value. Follow Us On Facebook link https://www.facebook.com/TechnicalExpertHackers/ Like Share and Subscribe YouTube Channel For more Videos https://youtu.be/fxvJc0kBV64 Kali Linux First Class https://youtu.be/H9UIaua7Nwk?list=PLAaMs54jGf5VinRN1DayB6or_FKEMk5JI Ethical Hacking Course In Hindi Series https://youtu.be/v4DfOwN_Yac?list=PLAaMs54jGf5V7-2nn2RkKCfaWhw1InRIF Ethical Hacking In English Series https://youtu.be/odaHqorKKyw?list=PLAaMs54jGf5W_yRcUwVk8LoeJ1oXLTwhr
MD5 Encryption & Decryption | Hackers best friend ? | Practical Explanation
 
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Simple Explanation On Encryption (Encryption kya hota hai usko janne ke liye ye video dekhe) : https://www.youtube.com/watch?v=tXR1N_D-9UU ======================================================================= Hello Dosto !! Is video me main aapko md5 encryption ke bare me bataunga aur sikhaunga ki kaise aap encrypted string ko decrypt kar sakte hai. aur aap kisi simple text ko encrypt kar sakte hai. ye tools ethical hackers, crackers, pen-testers, security experts use karte hai. aasha karta hoo apko ye video pasand ayegi. aisi he aur video dekhte rehne ke liye is channel ko subscribe jarur kare. Subscribe to my channel for more videos like this and to support my efforts. Thanks and Love #TechnicalSagar LIKE | COMMENT | SHARE | SUBSCRIBE ---------------------------------------------------------------------------------- For all updates : SUBSCRIBE Us on Technical Sagar : www.youtube.com/technicalsagarindia LIKE us on Facebook https://www.facebook.com/technicalsagarindia Follow us on Twitter : http://www.twitter.com/iamasagar
Views: 29986 Technical Sagar
Python AES Encryption/Decryption using PyCrypto Tutorial
 
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In this tutorial, we will learn Encryption/Decryption for AES CBC mode using PyCrypto. All links for source code, text based tutorial and further reading material will be in the description below. Detailed Text Based Tutorial http://www.letscodepro.com/encryption-in-python-using-pycrypto/ Gihub Source Code Link https://github.com/the-javapocalypse/Python-File-Encryptor Further Reading Material http://searchsecurity.techtarget.com/definition/cipher https://defuse.ca/cbcmodeiv.htm https://www.di-mgt.com.au/cryptopad.html http://www.cryptofails.com/post/70059609995/crypto-noobs-1-initialization-vectors Please Subscribe! And like. And comment. That's what keeps me going. Follow Me Facebook: https://www.facebook.com/javapocalypse Instagram: https://www.instagram.com/javapocalypse
Views: 23457 Javapocalypse
How to easily identify hash type? | पासवर्ड हैश की पहचान कैसे करें ?
 
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In this video I will show you that how to easily identify password hashes in Kali Linux? #TechChip Password hash recover with HashCat GUI on Windows | Easy Guide in Hindi https://youtu.be/JVwsYZlcwFE Hashcat : advanced password recovery tool for MacOS & Linux | beginner's guide in Hindi https://youtu.be/_PWetlSzlns Watch advance video tutorials- please visit https://techchip.net/products/ ▀▄▀▄▀▄ [ Follow Me on ] ▄▀▄▀▄▀ twitter: https://twitter.com/techchipnet facebook: https://facebook.com/techchip website:https://techchip.net Youtube: https://youtube.com/techchipnet Instagram: https://www.instagram.com/techchipnet/
Views: 5181 TechChip
CNIT 141: 6. Hash Function
 
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A lecture for a college course -- CNIT 141: Cryptography for Computer Networks, at City College San Francisco Based on "Serious Cryptography: A Practical Introduction to Modern Encryption", by Jean-Philippe Aumasson, No Starch Press (November 6, 2017), ISBN-10: 1593278268 ISBN-13: 978-1593278267 Instructor: Sam Bowne More info: https://samsclass.info/141/141_S19.shtml
Views: 91 Sam Bowne
Criptografia - Hash MD5 - Usando no Windows e no Linux - 11
 
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Curso de Criptografia - Hash MD5 - Usando no Windows e no Linux - 11 Contribua com a Bóson Treinamentos!: Como contribuir: http://www.bosontreinamentos.com.br/contribuir/ Por Fábio dos Reis Bóson Treinamentos: http://www.bosontreinamentos.com.br Facebook: https://www.facebook.com/bosontreinamentos/ Pinterest: https://br.pinterest.com/bosontreina/ Twitter: https://twitter.com/bosontreina Instagram: https://www.instagram.com/bosontreinamentos/ LInkedin: https://www.linkedin.com/in/f%C3%A1bio-dos-reis-06ba192a/ Outros projetos do autor: Diário do Naturalista: http://www.diariodonaturalista.com.br
Views: 8692 Bóson Treinamentos
HOW TO CRACK AN MD5 HASH USING HASHCAT [WINDOWS AND LINUX]
 
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Hashcat Wiki: https://hashcat.net/wiki/doku.php?id=hashcat
Views: 86 Chris
David Ashby on SHA256 [PWL NYC]
 
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PWLMini by David Ashby on SHA256! Meetup: http://bit.ly/2EBpwVL Paper: http://bit.ly/2EFx1uP Slides: http://bit.ly/2CI2r5X Audio: http://bit.ly/2CuJsfG ----------------------------------------------------------------------------------- Sponsored and hosted by Two Sigma (@twosigma) ----------------------------------------------------------------------------------- Description ------------------ While most of us use hash functions on a daily basis, few people can say that they truly understand what’s actually going on when they call SHA2("hello world"). Even fewer can say they’ve bothered to implement the function themselves, considering every introduction to cryptography starts off with a big warning saying to never, ever implement cryptographic primitives and just use vetted libraries due to the security implications. Of course, that important warning didn’t stop me from digging into the FIPS 180-4 spec (http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.180-4.pdf) to scratch the itch to understand how exactly it works, and along the way get a much better intuition about what bitwise operators actually do, what a bit rotation is, and why hex notation actually matters. Bio ----- David Ashby (https://twitter.com/alazyreader) is a self-taught programmer and systems engineer who sometimes spends his weekends implementing hash functions in high-level languages. He also helps organize the meetup, but no nepotism was to blame for the existence of this presentation.
Views: 699 PapersWeLove
Importance Of Developers Salting User Passwords
 
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Racker Bret McGowen discusses the importance of developers salting their user's passwords to help increase security for their app.
Views: 36214 Rackspace
Ubuntu 12.04 Forensics - Hashing Overview
 
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This video is part of a series on Computer Forensics using Ubuntu 12.04. In this Lecture Snippet I give an overview of what hashing is and why we use hashing in forensics. I examine a few popular hashing algorithms including :md5 sha-1, and sha-2. I also briefly discuss some of the tools used such as md5sus, md5deep, and ssdeep.
Views: 1082 Lecture Snippets
CTF365 - How to locate and crack password hashes (Metasploitable)
 
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In this tutorial, we're going to work with Metasploitable to show you how to locate and crack password hashes stored in a MySQL database. You can use Metasploitable in the cloud for free at CTF365. Just sign up for a free account at http://CTF365.com, connect to the VPN, and then follow our Metasploitable tutorials. ============================================= PREREQUISITES ============================================= To complete this tutorial, you need root access to the Metasploitable server. We covered this in a previous Metasploitable tutorial called how to exploit a misconfigured NFS server. You can watch it here: http://youtu.be/FlRAA-1UXWQ ============================================= CTF365 ============================================= CTF365 - http://www.ctf365.com CTF365 Blog - http://blog.ctf365.com ============================================= USEFUL TUTORIALS ============================================= If you're new to CTF365 and need help connecting to the VPN, follow one of the tutorials below. CTF365 Tutorial - How to set up VPN on Mac OS X: http://youtu.be/e3WIkFPsokE CTF365 Tutorial - How to set up VPN on Linux: http://youtu.be/dvznrKPRkrw ============================================= GET SOCIAL WITH US ============================================= Facebook - http://www.facebook.com/ctf365 Twitter - http://www.twitter.com/ctf365 LinkedIn - http://www.linkedin.com/company/ctf365
Views: 71679 Hack Ademy
Write Your Own Script Password Finder using Python ✔️
 
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How T code a Password Finder using Python ? The MD5 hashing is a one-way cryptographic function that accepts a Password of any length as input and returns as output a fixed-length digest value to be used for authenticating the original Password The MD5 hash function was originally designed for use as a secure cryptographic hash algorithm for authenticating digital signatures. MD5 has been deprecated for uses other than as a non-cryptographic checksum to verify data integrity and detect unintentional data corruption. download CODE : https://pastebin.com/zaYpLwMe I Hope you enjoyed my video. If you have any questions or suggestions feel free to ask me bellow in the comment !! -------------------------------- Keep coming for more! ☑️Subscribe for More Videos: https://goo.gl/o7GS17 Follow Me on : SOCIAL NETWORKS ✔️ Facebook page : https://goo.gl/5rn2sx Blog : https://goo.gl/fJjGZk Patreon : https://www.patreon.com/Linuxskills Google+ : https://goo.gl/kCBB5M -------------------------------- Thanks for watching!
Views: 1201 linux skills
How to use Oracle SHA 256 Bit & 512 Bit Data Encryption Algorithms?
 
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Function And Java Class You Can get from Below Link... https://github.com/arulxaviers/Oracle_PLSQL_SHA_256_512_Encryption A Complete Brief Video about How to use Oracle Database Encryption By Using SHA 256 Bit & 512 Bit Algorithms? How to use Oracle SHA 256 Bit & 512 Bit Data Encryption Algorithms? Oracle Data Encryption Database Encryption dbms_crypto.hash example 11g dbms_crypto.hash sha256 dbms_crypto.hash invalid identifier dbms_crypto.hash 12c dbms_crypto.encrypt example encryption and decryption in oracle 11g sys.dbms_crypto.hash example SHA 256 Bit SHA 512 Bit Encryption
Views: 1655 Oracle PL/SQL World
Hash-identifier Kali linux Tool
 
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hello every today going on how identifier hash md5 ,sha-1, sha-256 , sha512 and etc.................. see this video subscribe this channel linux user only not illegal purpose only education purpose thanks for watching
Views: 34 kktech
Boom-Hash | New Script Finding password of a Hash Without Wordlist ✔️
 
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Bash-Boom - New Script Finding password of a Hash Without Wordlist ✔️ Boom-Hash is a python script which scraps online hash crackers to find the right password of a hash. made by #linux_skills_channel_Team. You may have asked yourself, "How do hackers take my password, if the website owner can't?" The answer is simple. When a website stores your login password for the site, it is run through a cryptographic hash function before it enters the database, this script can destroy any hash ! Download Boom-Hash : git clone https://github.com/linuxskills/Boomhash/ Installing and Using Boomhash Open your terminal and enter : git clone https://github.com/linuxskills/Boomhash Now enter the following command : cd Boomhash Now run BoomHash Script by entering : python hash.py I would gladly take any ways to improve in both my how-to's and my coding. Finally, feel free to test this code out :D and comment bellow !! I Hope you enjoyed my video. If you have any questions or suggestions feel free to ask me bellow in the comment !! -------------------------------- Keep coming for more! ☑️Subscribe for More Videos: https://goo.gl/o7GS17 Follow Me on : SOCIAL NETWORKS ✔️ Facebook page : https://goo.gl/5rn2sx Blog : https://goo.gl/fJjGZk Patreon : https://www.patreon.com/Linuxskills Google+ : https://goo.gl/kCBB5M Twitter : https://twitter.com/linux_skills -------------------------------- Thanks for watching!
Views: 3130 linux skills
Looking At SHA-1 Collision
 
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Looking at the recent SHA-1 collision discovered by Google researchers where two different PDF share the same hash value. https://shattered.it
Views: 3629 quidsup
Introduction to Symmetric Encryption using Openssl
 
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Author: Jeremy Druin Twitter: @webpwnized Description: A light introduction to using OpenSSL to symmetrically encrypt text. The AES cipher is used in the sample with a 256 key, a salt and cipher block chaining mode. The sample is decrypted as well. Encryption theory is not discussed. This is only a practical exercise in performing symmetric encryption. Thank you for watching. Please support this channel. Up vote, subscribe or even donate by clicking "Support" at https://www.youtube.com/user/webpwnized! The webpwnized YouTube channel is dedicated to information security, security testing and ethical hacking. There is an emphasis on web application security but many other topics are covers. Some of these include forensics, network security, security testing tools and security testing processes. The channel provides videos to encourage software developers and system administrators to perform security testing. Also, the channel educates the next generation of security testers and bug bounty hunters who want to respectfully, legally and ethically help system owners that allow security testing.
Views: 2262 webpwnized