Enigma - encrypt text

Enigma is an easy to use application that allows you to ensure the absolute security of any transmitted information. All you need to do is to make an agreement with someone that it will be used as your "Key" encryption. For example, it may be a three-digit number, the true meaning of which is clear only to you two. In the texts of encrypted messages allowed to use any characters, including emoticons. To crack such a message, not knowing "Key" and not having special education, is almost impossible. The resulting cipher is encrypted again.