Basic example script for encrypting/decrypting with 3DES.

des3.rb

require 'openssl'
require 'base64'


# Generate with this: OpenSSL::Cipher::Cipher.new("des-ede-cbc").tap{|c| c.encrypt}.random_key
key = "\xBEB\xBA;\xA5\xEA-\x1A4\x0E8\xAC\x13\xF1s9\xB2\x87\xD3D\x9A\xC2\xA8\xC7"

def encrypt(message, key)
  des_cbc=OpenSSL::Cipher::Cipher.new("des-ede-cbc")
  des_cbc.encrypt
  des_cbc.key = key
  ciphertext = des_cbc.update(message)
  ciphertext << des_cbc.final
  Base64.encode64(ciphertext)
end

def decrypt(message_enc, key)
  des_cbc=OpenSSL::Cipher::Cipher.new("des-ede-cbc")
  des_cbc.decrypt
  des_cbc.key = key
  des_cbc.update(Base64.decode64(message_enc))
end

# puts encrypt("hi boss, this better be good, asdfasdl;kfj;asdlkfja;sdlkfj;asldkfj", key)
# puts decrypt("wxJqJkPmgEEdlEaPPieERgH7zCVJFmyCLa4MAUUx7T1/jN33E1/bLjhqIbTz\nah4IsytZpuytSC9J6j2ICg8U5rD6I+1S0Cxk\n", key)