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Cipher MachineCipher Machine

is an elegant software application that is used to encrypt and decrypt text. Its ciphers are virtually unbreakable.

Latest Upgrade: Version 3.1

After executing his Cipher Machine for the first time, the owner can provide copies of his unit to those with whom he would like to establish a secure communication network.  These copies will all have the same serial number, an essential requirement for communication.

The Cipher Machine User Manual can be downloaded at:

User Manual

A free copy of the latest version of Cipher Machine (zip file) can be downloaded at:

Cipher Machine

When the download is complete, the ZIP file can be unzipped to reveal the Cipher Machine Folder.  The "Read Me" file in the folder explains how to execute the program.

Any user of Cipher Machine may receive a reasonable amount of free technical assistance by contacting the developer, David Williams, at

Cipher Machine is being offered free of charge in order to provide others with a secure text encryption tool for secure communication via email. Anyone who is inclined to express their appreciation is encouraged to donate to a worthy charity. Of special worthiness to the developer of Cipher Machine are children's hospitals. Four notable such hospitals are:

Children's of Alabama hospital in Birmingham, Alabama,
St. Jude Children's Hospital in Memphis, Tennessee, and
Cincinnati Children's Hospital in Cincinnati, Ohio.
Boston Children's Hospital in Boston, Massachusetts