Enigma Pro Encryption and Decryption Machine Download
The real mechanical machine was used during the World War II, not so long ago, just about 60 years ago :) People thought encrypted data couldn't be broken, just like today's popular 128 bit encryption, but in truth it wasn't so, the encryption was cracked down and decrypted using another machine. Today's technologies allow us to make a much simpler versions of the original mechanical machines.
I do not trust 128 and 512 bit encryptions, if there will something that I'd like to encrypt I'd use 32768 bit encryption because now the speed of encryption and decryption is much and much faster. In the old days it was required to have at least 2 people for easy operation, and a huge brute force of people who were intercepting the radio signals, and some luck for getting a real copy of the original machine :) Now days anyone can make such machine.