For symmetic encryption, you can use the following:
To encrypt:
openssl aes-256-cbc -salt -a -e -in plaintext.txt -out encrypted.txt
To decrypt:
Maxime Lapointe MaxLap
MaxLap
/ encrypt_openssl.md
Created
October 24, 2024 20:44
— forked from dreikanter/encrypt_openssl.md
File encryption using OpenSSL
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| class NegatedMethodRewriter < Parser::TreeRewriter | |
| def on_send(node) | |
| receiver_node, method_name, *arg_nodes = *node | |
| if receiver_node && method_name == :! && arg_nodes.size == 1 | |
| remove(node.location.selector) | |
| insert_before(node.location.expression, "!(") | |
| insert_after(node.location.expression, ")") | |
| else |
MaxLap
/ gist:541d4e46fbfe0188b251eef50f997915
Created
December 2, 2020 00:53
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| # frozen_string_literal: true | |
| require "bundler/inline" | |
| gemfile(true) do | |
| source "https://rubygems.org" | |
| git_source(:github) { |repo| "https://github.com/#{repo}.git" } | |
| gem "rails", github: "rails/rails" |
MaxLap
/ gist:4b66607c23c8c00483a13f06acfb6018
Created
December 1, 2020 13:34
ActiveRecord `associated` duplicate bug
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| # frozen_string_literal: true | |
| require "bundler/inline" | |
| gemfile(true) do | |
| source "https://rubygems.org" | |
| git_source(:github) { |repo| "https://github.com/#{repo}.git" } | |
| gem "rails", github: "rails/rails" |
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| # This script will list asset files which are used and those which aren't for a Rails 3.2 application. | |
| # | |
| # It works by prefixing/suffixing all (js css less scss sass coffee) files. Then, after having run | |
| # rake assets:precompile, you can run the script again and it will search in public/assets for | |
| # those prefix to know if the file is definetly not used, or if it could be used. | |
| root_dirs = %w(app/assets vendor) | |
| file_endings = %w(js css less scss sass coffee) | |
| file_paths_to_handle = root_dirs.flat_map {|d| file_endings.flat_map {|fe| Dir["#{d}/**/*.#{fe}"] } }.sort |
MaxLap
/ short_source_rabin_karp.cr
Created
January 13, 2017 00:36
— forked from sdogruyol/short_source_rabin_karp.cr
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| require "benchmark" | |
| require "colorize" | |
| require "http" | |
| require "spec/dsl" | |
| class String | |
| private PRIME_RK = 2097169u32 | |
| def index_old(search : String, offset = 0) | |
| offset += size if offset < 0 |
MaxLap
/ rubocop.rb
Last active
March 12, 2024 17:15
— forked from skanev/rubocop.rb
A Rubocop wrapper that checks only added/modified code
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| #!/usr/bin/env ruby | |
| # A sneaky wrapper around Rubocop that allows you to run it only against | |
| # the recent changes, as opposed to the whole project. It lets you | |
| # enforce the style guide for new/modified code only, as opposed to | |
| # having to restyle everything or adding cops incrementally. It relies | |
| # on git to figure out which files to check. | |
| # | |
| # Here are some options you can pass in addition to the ones in rubocop: | |
| # |
MaxLap
/ haml_helper.rb
Last active
December 25, 2015 20:08
Helper to allow passing locales to :coffeescript filters and javascript filters if you wrap your javascript in (function() { ... without having to use interpolation, saving you against slow rendering on Windows servers.
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| module HamlHelper | |
| def coffee_with_locals locals={}, &block | |
| # This helper will set locals as values inside of the :coffeescript filter that follows. | |
| # Doing this instead of using regular interpolation allows haml to keep a compiled version of the CoffeeScript | |
| # instead of having to compile on every render after the interpolation is applied. On Linux, the impact is | |
| # negligible because V8 is fast, but Windows environments don't have this chance and page rendering can be slowed | |
| # heavily from having to compile CoffeeScript. | |
| block_content = capture_haml do |