Pretty Good Privacy (PGP)

• PGP - A suite of tools for encrypting, decrypting and veri- fying messages.
• Phil Zimmerman, 1991
• Legal Problems (patents for RSA, US govt. laws) until 1994
• ``Free'' since 1994

How PGP is useful to you?

• Keep your files/data confidential. No super-user (root) or hacker can read it.
• Send ``private'' email (no snooper can read/alter)
• Be sure who sent you the email (authentication)