# Graphical Presentation – Displacement Crypto in a Nutshell.

This is a user-friendly graphical aid to understanding displacement cryptography.

Check,

or,
http://www.adacrypt.com/introduction.html - “How it All Works”
This algorithm can be used either to encrypt large files of plaintext or to create secure passwords for access control to secured sites.

Usage 1) Encryption.

http://www.adacrypt.com/introduction.html - “Skew Line Encryptions - The Eventual Cipher”, see the “Story of Displacement Cryptography.” also..

Usage 2) Same algorithm Doubles in a Secure Passwords Scheme.

The entities now are the ‘owner’ and the ‘user’ of a secure site such as say, an on-line bank account (or whatever) that relies on a secure password for safely allowing access to users.

User:

Username: a three-dimensional vector that has seven-digit coefficients – (see “ N “ in the schematic).

Password: a three-dimensional vector that has seven-digit coefficients – (see “Ciphertext” in the schematic).

Owner.

The owner has a set of 2 decryption keys.

Decryption key (1): A three-dimensional vector that has seven-digit coefficients – (see “Change-of-Origin” in the schematic).

Decryption key (2): A predetermined plaintext from a private set of alphanumeric characters (taken say from the writable ASCII alphanumeric subset that has been scrambled in a controlled way).

Summary:
The owner sets a decryption condition for the security of the password, i.e.. the user’s input must decrypt to some constant alphanumeric character that the owner has preset using the same algorithm and using keys that are privy to the owner alone, on the user’s username and password.

Clearly, this will only work when all is above board and the owners conditions have been satisfied .

Both of these schemes i.e. 1) large-scale text encryption and 2) doubling as the secure password generation scheme as described, are number-theoretic schemes and can be demonstrated as being theoretically unbreakable.

No amount of computer power will deduce the owner’s keys by brute force.

Enjoy,