- Developer
- Custom Solutions of Maryland
- Size
- 3.4 MB
- Operating System
- Mac
- License
- Trial
- Category
- System-Security
Download Links
- Download
- Simple Cypher
Simple Cypher is a computer version of a cypher system developed by
Thomas Jefferson. The original system used 24 numbered, wooden wheels
and a spindle with two end caps. Each wheel had all 26 letters around
the edge in random order. The Sender noted the order in which wheels
were placed on the spindle. Then, each wheel was rotated as necessary
to spell out the message. Finally, the caps were pressed tight so that
all wheels rotated together and the spindle was rotated to any other row
which became the encyphered message. The wheel order and the
encyphered message were sent to the Receiver (separate messages) who
reversed the steps to recover the plain text message. Simple Cypher is
$10 shareware. The User may try Simple Cypher in Demo Mode for five
launches before registration is required.
