Learn how symmetric encryption techniques help protect computer data.

A huge amount of private data is sent around the Internet every day: emails with details about our personal lives, passwords that we type into login screens, tax documents that we upload to servers. Learn more about the need for data...

Find out about data encryption, decryption and cracking computer data to avoid virsus and cyberattacks.

A thorough discussion of the business and professional uses of encryption.

Learn how public key encryption can protect computer data.

Learn how public key encryption can send that data safely between computer systems.

Find out why we need to encrypt computer data to avoid hackers.

This student activity about public key encryption allows learners to simulate encrypt and decrpyt messages without having to share a password to unlock them.

Julius Caesar encrypted messages two thousand years ago. By knowing the techniques of deciphering a code--frequency analysis, known text, and brute force--one can begin to understand the three key aspects of data encryption, decryption,...

Students simulate sending a secret message to a friend via the internet, attempting to deliver the message safely and securely.

Check your understanding of cryptography and public key encryption.

This activity explores the dominating set problem, and sets it up as the basis for a the public key encryption activity.

Wikipedia provides a basic definition of encryption, and distinguishes between the two encryption methods: symmetric and asymmetric key algorithms.

These guidelines describes the primary alternative methods for verifying the identities of computer system users, and provides recommendations toFederal agencies and departments for the acquisition and use of technology which supports...

Public Key Encryption, an asymmetric encryption technique, is used to allow computers to securely communicate. The high level process is explained in this article.

Symmetric encryption techniques are explained including the Vigenere Cipher and AES-128.

Test if you decrypted the secret code.

A comprehensive guide to protecting your business in today's digital world.

Based off of the hit television show NUMB3RS, this lesson introduced students to simple coding techniques (namely, the shift cipher). Students learn to translate codes from nonsense to English by quantifying each letter, and then...

Test to see if you successfully decrypted clues.

A quick comprehension check over congruence relation.

A quick check to practice decrypting messages.

Practice problems over modular multiplication in cryptography.

Practice problems for reviewing modular addition in cryptography.