IOTA tutorial 3: IOTA Seed

If you like this video and want to support me, go this page for my donation crypto addresses:    / mobilefish   This is part 3 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. An IOTA seed is 81 characters long and only consists of the latin alphabet characters and the number 9: ABCDEFGHIJKLMNOPQRSTUVWXYZ9 The characters A-Z are all upper case. With the seed the IOTA wallet can generate corresponding addresses. Each specific seed generate addresses belonging to the seed. An IOTA seed looks like: C9RQFODNSAEOZVZKEYNVZDHYUJSA9QQRCUJVBJD9KHAKPTAKZSNNKLJHEFFVK9AWVDAUJRYYKHGWQIAWT According to the official IOTA knowledge base: https://kb.helloiota.com/Knowledgebas... you can use the following methods to generate IOTA seeds: Linux Operating System: Open a terminal and enter the following command: cat /dev/urandom |tr -dc A-Z9|head -c${1:-81} Mac Operating System: Open a terminal and enter the following command: cat /dev/urandom |LC_ALL=C tr -dc 'A-Z9' | fold -w 81 | head -n 1 The function /dev/urandom creates cryptographically random numbers by gathering random data for example environmental noise (entropy) from device drivers, network packet timings and other sources into an entropy pool. The data from the entropy pool is used as input for the Cryptographically Secure PseudoRandom Number Generator (CSPRNG) This generator will generate the random numbers. urandom means unlimited random On the Mac there is no difference between /dev/random and /dev/urandom, both behave identically. On Linux systems there are differences between /dev/random and /dev/urandom. In this presentation these differences will not be discussed. Another solution the IOTA knowledge base recommends to generate an IOTA seed is using this web application: https://ipfs.io/ipfs/QmdqTgEdyKVQAVnf... The source code for this seed generator can be found at: https://github.com/knarz/seedgen The knarz/seedgen uses the Stanford Javascript Crypto Library. This library can be found at: https://github.com/bitwiseshiftleft/sjcl More information about this library can be found at: http://bitwiseshiftleft.github.io/sjcl/ http://bitwiseshiftleft.github.io/sjc... The Stanford Javascript Crypto Library (SJCL) is a project by the Stanford Computer Security Lab to build a secure, powerful, fast, small, easy-to-use, cross-browser library for cryptography in Javascript. The SJCL library is used in many web applications. If you want to use the web application to generate an IOTA seed do the following: Goto https://ipfs.io/ipfs/QmdqTgEdyKVQAVnf... and save the webpage locally on your computer. Disconnect your computer from the Internet (disable WiFi, or remove your Ethernet cable) Open the webpage and move your mouse until its reaches 100% Store your IOTA seed in a secure location. You should NEVER create an IOTA seed by entering 81 characters (A-Z9) yourself on a keyboard. You should NEVER create an IOTA seed using an web application while you are online. You should NEVER use unknown IOTA seed generators. Use the seed generators recommended by the official IOTA knowledge base: https://kb.helloiota.com/Knowledgebas... There are several online IOTA seed generators which do not generate Cryptographically Secure Random Numbers which means there is big chance someone else can generate the same seed as you have. 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/... #mobilefish #howto #iota