Secure Electronic Messaging (2)

• PGP - Pretty Good Privacy

  • Owned by Network Associates; developed by Phil Zimmermann in 1991)
  • World-Wide deployment
  • provides encryption and digital signature for e-mail and files
  • asymmetric encryption: RSA, Diffie Hellman
  • symmetric encryption: CAST, IDEA, Triple DES
  • PGP is a hybrid cryptographic system which combines the best features of symmetric and asymmetric encryption
  • widely available: http://www.pgp.com; http://www.pgpi.com
  • Windows: version 6.0.2; Unix : version 5.x.I

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