https://wiki.estaca.net/ 2026-08-01T15:09:25+00:00 https://wiki.estaca.net/ https://wiki.estaca.net/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2026-06-19T09:14:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.estaca.net/doku.php?id=backup&rev=1781860472&do=diff Encrypted backups The 3-2-1 rule It is generally recommended to try to follow the 3-2-1 rule: at least 3 copies, on at least 2 devices, with at least one off-site copies. For example: 1) your computer 2) a local backup on an external disk 3) a cloud to store another backup text/html 2025-04-30T12:18:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.estaca.net/doku.php?id=balena-etcher&rev=1746015527&do=diff Using Balena Etcher Balena Etcher, is an Open Source, user friendly and cross platform software used to flash USB disks with disk images in order to make them bootable. You can download it here. For Debian based distributions (like Linux Mint, Ubuntu or Debian), download the .deb file, and the checksum file for Linux: (this is an example for the version v2.1.0, change the filenames accordingly if needed): text/html 2025-04-30T12:28:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.estaca.net/doku.php?id=boot_live_usb&rev=1746016082&do=diff Booting From a Live USB Many time, you will need to load another operating system than the one you are currently using, just to modify some things on your operating system. The system will then live on your RAM and not on your hard drive. To do this, you need to prepare a USB key (usually more than 8GB) dedicated for this. You will download the installer of some popular linux distributions that offer this possibility. Here, we will take the example of Ubuntu. text/html 2026-06-11T07:50:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.estaca.net/doku.php?id=diceware&rev=1781164222&do=diff Making a good passphrase: the diceware method A good passphrase is a passphrase that: * is long enough that you cannot guess it easily with random trials (also called brute force attacks) * if made from elements, is random enough that you cannot guess it from random trials of elements combinations (also called dictionary attacks) text/html 2026-06-19T12:28:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.estaca.net/doku.php?id=e2ee&rev=1781872087&do=diff End To End Encryption Workshop Here are the slides: What is end to end Encryption Usually, this is how you interact with someone: each time you make a request to the internet (a Google search, sending a mail, sending a Signal message, going to Facebook, everything), you do not talk directly to the person you want to talk to (in case you want to share something with someone). There is always a middle man, called a text/html 2025-11-13T09:28:03+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.estaca.net/doku.php?id=git_workshop&rev=1763026083&do=diff Git Workshop Here is a small tutorial for using Git, aimed at absolute beginners. For now I will just put the slides and the cheat cheat, but a more beautiful version will come. The slides: The cheat cheet: text/html 2025-05-20T12:38:43+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.estaca.net/doku.php?id=hashed&rev=1747744723&do=diff Hash function To hash means to apply a hash function, which is function that takes an input and return a gibberish output, usually of a fixed length. The idea is that it should be relatively easy to apply the hash function, but impossible to do the reverse operation. It is used in many situations. On websites and applications, for example, your passwords are hashed before being stored, and when you enter a password, it is hashed and compared to the hash. This means that if the passwords are le… text/html 2026-07-16T12:37:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.estaca.net/doku.php?id=pgp_workshop&rev=1784205457&do=diff PGP Workshop Important note on PGP: PGP has been more and more criticized in the security community over the years (see for example here and here) for its complexity and flawed design. Therefore, it is not really a good idea to use PGP for sending ourselves encrypted mails, as opposed to use Signal (until some other better protocol is ready). As PGP is still quite used for signing packages, it can still be a good idea to learn it for verifying those packages. text/html 2026-06-19T09:25:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.estaca.net/doku.php?id=reencrypt_linux_post_install&rev=1781861125&do=diff Reencrypt Linux Post Install This procedure is here to set up Full disk encryption on a Linux distribution (here we will show a procedure tested on Linux Mint that should work with other Debian based distributions such as Debian and Ubuntu) when this feature has not been set up during the installation. text/html 2026-05-28T17:00:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.estaca.net/doku.php?id=signal_install_burner&rev=1779987601&do=diff Install Signal without a smartphone Imagine you do not want to have a smartphone for some reasons, but still need to have a little bit of privacy. Signal is considered one of the most secure and private app for messaging, using a very advanced end to end encryption technology, and being open source and developed by a Foundation caring for our privacy and not an evil corporation. Besides, it is super user friendly and easy to use. However, most people consider that it requires the use of a smar… text/html 2026-06-17T10:41:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.estaca.net/doku.php?id=start&rev=1781692876&do=diff Welcome to the workshops Dokuwiki ! * Tor Workshop * PGP Workshop * Reencrypt Linux post install * Git workshop * Install Signal without a smartphone * Making a good passphrase: the diceware method * End To End Encryption workshop * Backup your system in an encrypted way text/html 2026-06-19T11:20:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.estaca.net/doku.php?id=tor_workshop&rev=1781868021&do=diff Tor workshop The three types of encryption we usually talk about End to End Encryption Usually, this is how you interact with someone: each time you make a request to the internet (a Google search, sending a mail, sending a Signal message, going to Facebook, everything), you do not talk directly to the person you want to talk to (in case you want to share something with someone). There is always a middle man, called a