The One-Time Pad, or OTP is an encryption technique in which each character of the plaintext is combined with a character from a random key stream. Originally described in 1882 by banker Frank Miller (USA), it was re-invented in 1917 by Gilbert Vernam and Joseph Mauborgne. When applied correctly, the OTP provides a truely unbreakable cipher. It is named after the sheets of paper (pads) on which the key stream was usually printed. It also exists as One Time Tape (OTT).

Rather than books, today we can us a simple excel spreadsheet for an OTP.

To create your own encoded messages, get this OTP spreadsheet today as an instant download for only $24.99.

After your purchase, please read the instruction below…

One Time Pad Instructions – VERY IMPORTANT!

1. To use the one time pad, open it in EXCEL and click on the FORMULAS tab at the top.
2. On the far right side of the formulas header there is a button “Calculate Now”.
3. Every time that is clicked the entire pad and key are changed with random numbers. This is how it is updated.
4. DO NOT ever transmit the key and numbers that are to be used in the code, over the net. The NSA will have it and it will be child’s play to decipher the code.
5. Hand deliver the key and pad to be safest. Or if absolutely necessary use the USPS of even a courier service like UPS to distribute the key and OTP.