PPT Slide
(Authenticating Human’s Digitally)
Complicated Mathematical functions which can simulate every feature of digital signatures.
Encryption systems scramble date so that is only understood by one person(s) holding a single key. Oldest and best known form of encryption. Examples: DES, triple-DES, RC-4, RSA, IDEA.
(Keeping Data Secret from everyone but Two communicating parties.)
Encryption systems scramble data with two separate keys. One is used for Locking and the other is used for Unlocking. The one which Locks can’t Unlock and vice versa. Each party publishes one of their keys (for unlocking) called the public key, while keeping the other secret. Messages sent have digitally signed and encrypted the signature line. Anyone holding the proper public key can decrypt the message and authenticate it. Public keys are kept in a public phone book.