Printables:
Perhaps your supercomputer cluster was infiltrated by an enemy virus. Perhaps your adversaries are scanning for RF radiation and you can't turn your laptop on. Perhaps you are participating in a treasure hunt where they don't allow anything digital except text messaging... Whatever the case, these printables should form an integral part of your mobile toolset!
<< One Time Pad grid:
The one time pad is amazingly secure, and can be performed with a pencil and pad of paper. To use:
These numbers by PHP's mt_rand
- Convert your plaintext letters to numbers (a=1, b=2)
- Starting in the upper left grid square and moving to the right, add the numeric value of each square to the corresponding number in your plaintext using mod26 arithmetic (if you get a number above 26, "loop" and subtract 26).
- Reverse process to decode
These numbers by PHP's mt_rand
(Print black and white on 8.5" X 11" paper in "Portrait" mode)
