Alexander Marychev killondark

## encrypt_decrypt.rb
require 'openssl'

class String
  def encrypt(key)
    cipher = OpenSSL::Cipher.new('DES-EDE3-CBC').encrypt
    cipher.key = Digest::SHA1.hexdigest key
    s = cipher.update(self) + cipher.final

    s.unpack('H*')[0].upcase
  end

## keychron_linux.md

      
        
          
            
              
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                killondark
                / keychron_linux.md
            
            
              Created
              December 9, 2023 07:38
                — forked from andrebrait/keychron_linux.md
            
              
                Keychron keyboards on Linux + Bluetooth fixes
              
          
        
      
        
  
      
    Here is the best setup (I think so :D) for K-series Keychron keyboards on Linux.
Most of these commands have been tested on Ubuntu 20.04 and should also work on most Debian-based distributions.
If a command happens not to work for you, take a look in the comment section.
Make Fn + F-keys work

Keychron Keyboards on Linux use the hid_apple driver (even in Windows/Android mode), both in Bluetooth and Wired modes.
By default, this driver uses the F-keys as multimedia shortcuts and you have to press Fn + the key to get the usual F1 through F12 keys.
	require 'openssl'

	class String
	def encrypt(key)
	cipher = OpenSSL::Cipher.new('DES-EDE3-CBC').encrypt
	cipher.key = Digest::SHA1.hexdigest key
	s = cipher.update(self) + cipher.final

	s.unpack('H*')[0].upcase
	end