Authentication: The process of reliably determining the identity of a communicating party.
Authorization: Permission to access a resource.
Confidentiality: The property of data not being divulged to unauthorized parties.
DES: Data Encryption Standard, a secret key cryptographic scheme.
Integrity: The system protects the data from unauthorized modification.
Public Key Cryptography: Also known as asymmetric cryptography, a cryptographic system where encryption and decryption are performed using different keys, one of which can be made public.
RFC: Internet request for comments is the Internet communities method of standardizing technology for the Internet.
Symmetric Key Crytography: The same key is used for encryption.