Encryption (or, to be more precise, cryptography) is the art of storing information on paper or anywhere else in a form which allows only authorized personnel to understand and use it. If an unauthorized person were to look at the information he or she would only see sequences of meaningless characters and symbols. An encryption system is what is used to accomplish cryptography. An encryption system is used to translate the stored information into useful, meaningful information (decryption).

General Encryption:

• Encryption Concepts
  
• Steganography
  
• Public Key Encryption (RSA)
  

Encryption Techniques:

• XOR Encryption
  
• Cipher Analysis Tool
  

Pretty Good Privacy (PGP):

• PGP Help
  
• PGP Application Wrapper
  

Encryption Links:

• Handbook of Applied Cryptography
  
• Enkryptonator Home Page
  
• Encryption Information
  
• Secure Deletion of Data from Magnetic and Solid-State Memory
  
• MIT distribution site for PGP
  
• RadiusNet's archive of every free version of PGP ever made