Authentication option

This section proposes a new authentication type based on PGP. The Telnet Authentication Option [14] standard defines RSA and SPX [16] as authentication types, which both are public-key based methods. Currently no standard, describe the use of the RSA authentication type, and the specification of the SPX type is not yet complete.

• Why use PGP?
• Design goals
• PGP authentication scheme
  • Authentication information
  • Format of the ``challenge''
  • Selecting encryption keys
• Command name and codes
• Sub-option command meanings
• Example