Cryptography

Cryptography Overview

This week we will discuss Cryptography. We will cover hashing and symmetric and asymmetric Encryption

Here are links to the resources. You should visit these sites, bookmark the links and download the tools:

Use CrypTool to Encrypt and Decrypt messages

1)  Download the CrypTool from the web. You can find it here: http://www.cryptool.org/en/ct1-download-en. (You can see a demonstration of this tool in LabSim 2.3)
2)  Download this file, decrypt it and reveal the hidden message:  Cry-RC4-message.zip

Tip:  You will have to figure out the correct settings for the analysis to work.

Extra Credit: First one who decrypts this message and posts the message in a comment at the bottom of this page gets extra credit:  Encrypted-extra-credit.zip

Author: Dan

Dan teaches computer networking and security classes at Central Oregon Community College.

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