Hi,

   +-From: Paul Ebermann <paul-eberm...@gmx.de> --
   |_Date: Fri, 10 Jun 2011 01:28:28 +0200 _______
   |
   ...
   |You should rekey after about each gigabyte of data, to avoid some
   |attacks from data analysis.  (I'm not sure if JSch or the ChannelSftp
   |does this automatically, maybe it should.)

The usual sshd like OpenSSH will automatically invoke the re-keying process
in every gigabyte of data transferring, so you don't have to do in the
usual scenario.  Of course, you can start the re-keying by using
Session#rekey() method from the client side.


Sincerely,
--
Atsuhiko Yamanaka
JCraft,Inc.
1-14-20 HONCHO AOBA-KU,
SENDAI, MIYAGI 980-0014 Japan.
Tel +81-22-723-2150
    +1-415-578-3454
Skype callto://jcraft/
Twitter: http://twitter.com/ymnk
Facebook: http://facebook.com/aymnk

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