AES, PGP, SSL, IPSEC and PKI
Pretty Good Privacy (PGP)
- “Public domain” encryption software
- Designed to protect eMail content
- Can be used to encrypt other types of messages
- Released by Phillip Zimmermann of MIT as “guerrilla freeware” in 1991
- Distributed via Internet - Globally
- Subject to 3 year criminal investigation
- Challenged US Export Restrictions on Cryptography
- Defense : PGP is “artistic expression”, covered under US Constitution as “freedom of expression”
“If privacy is outlawed, only outlaws will have privacy.”
Introduction to Encryption