The "Cipher Data Manager" encrypt every type of files on Windows xx, and decode encrypted files. This software was made for looking foward to established security, for example, files transfer in E-Mail additional files.
The "Double Keys" is as follows
> Setting "Encrypt Theory Selection Password". This strings are used for select a method of encryption at random.
> Setting "Encrypt Key Word". This strings means keyword of encryption.
> "Encrypt Key Word" will be stored in encrypted file named "PASS.DI". Some other computer will be able to have same keyword by copying of "PASS.DI". But, Cause this file is encrypted by "Encrypt Theory Selection Password", You must register same "Encrypt Theory Selection Password" at computer that you want to copy "PASS.DI" before copying. If you change "Encrypt Theory Selection Password" after copy "PASS.DI", This program change your "Encrypt Key Word" too. This makes you to lost your "Encrypt Key Word". Be careful.
> "Encrypt Theory Selection Password" will be not copyed by copying "PASS.DI". If you need using same password with other computer, then you must type same password in that computer.
Notice limitation in "1. Introduction " in this manual.