Communications Security Guides

Cipher Table Guide

The cipher table is designed to help you encode and decode messages using a keyword. This method, known as the Vigenere cipher, offers a step up in security from simple...

Cipher Table Guide

The cipher table is designed to help you encode and decode messages using a keyword. This method, known as the Vigenere cipher, offers a step up in security from simple...

Card of the Day Guide

The Card of the Day provides a robust security system to enhance discreet communication within your group. It includes a 10-letter heterogram for securely sharing numbers, unique code words for...

Card of the Day Guide

The Card of the Day provides a robust security system to enhance discreet communication within your group. It includes a 10-letter heterogram for securely sharing numbers, unique code words for...

One-Time Pad Guide

The One-Time Pad (OTP) is a highly secure encryption method used for confidential communication. Its strength lies in the fact that each encryption key is used only once, making it...

One-Time Pad Guide

The One-Time Pad (OTP) is a highly secure encryption method used for confidential communication. Its strength lies in the fact that each encryption key is used only once, making it...

Authentication Table Guide

The Authentication Table sheet enhances communication security through a challenge-response system for verifying identities. By filling out the sheet with random letters and numbers, you can greatly enhance your identity...

Authentication Table Guide

The Authentication Table sheet enhances communication security through a challenge-response system for verifying identities. By filling out the sheet with random letters and numbers, you can greatly enhance your identity...