code

    def encrypt(plaintext, key)
      cipher = OpenSSL::Cipher::AES256.new(:CBC)
      cipher.encrypt
      cipher.key = File.read(key)
      iv = cipher.random_iv
      encrypted = cipher.update(plaintext) + cipher.final
      puts Base64.encode64("#{Base64.encode64(encrypted)},#{Base64.encode64(iv)}")
      puts Base64.encode64("#{Base64.encode64(encrypted)},#{Base64.encode64(iv)}").inspect
    end

output

[failshell@manticore]:titan git:(master) ✗ $ ./bin/titan -k key -e 'some super secret'
OTZGdWtzM01id3pndEJzVlZRTjBKckFsclhzZm9TVElaRHJWc0s4Vm5Udz0K
LHdPdXpoMEdCM3ZvbU45N1pQdGdoYXc9PQo=
"OTZGdWtzM01id3pndEJzVlZRTjBKckFsclhzZm9TVElaRHJWc0s4Vm5Udz0K\nLHdPdXpoMEdCM3ZvbU45N1pQdGdoYXc9PQo=\n"