src/usr.bin/ssh/ssh.1 - diff

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-version 1.300, 2010/03/05 06:50:34
+version 1.301, 2010/03/05 08:31:20
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  per line, though the lines can be very long.
  After this, the user can log in without giving the password.
  .Pp
- The most convenient way to use public key authentication may be with an
+ A variation on public key authentication
- authentication agent.
+ is available in the form of certificate authentication:
+ instead of a set of public/private keys,
+ signed certificates are used.
+ This has the advantage that a single trusted certification authority
+ can be used in place of many public/private keys.
+ See the
+ .Sx CERTIFICATES
+ section of
+ .Xr ssh-keygen 1
+ for more information.
+ .Pp
+ The most convenient way to use public key or certificate authentication
+ may be with an authentication agent.
  See
  .Xr ssh-agent 1
  for more information.