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...50 ms. Adding random noise would be less effective than what we are doing. Random noise would dilute the signal of inter-keystroke timing, we are eliminating the signal altogether. By pacing the inter-packet timing we completely remove the inter-keystroke timing information. regards, -Jason Coit -------- Original Message -------- Subject: Re: Defeating Timing Attacks Patch for OpenSSH 2.9.9p2 and 2.9p2 Date: Tue, 16 Oct 2001 17:36:18 -0400 From: Nicolas Williams <Nicolas.Williams at ubsw.com> To: "C. Jason Coit" <jasonc at silicondefense.com> CC: openssh-unix-dev at...

Hello, In response to the timing analysis attacks presented by Dawn Song et. al. in her paper http://paris.cs.berkeley.edu/~dawnsong/ssh-timing.html we at Silicon Defense developed a patch for openssh to avoid such measures. Timing Analysis Evasion changes were developed by C. Jason Coit and Roel Jonkman of Silicon Defense. These changes cause SSH to send packets unless request not to, exactly every 50 ms. IF no data is ready to be sent, SSH will send a bogus packet with 16 bytes of data (which is the same size as most keystrokes). Thus someone performing timing analysis cannot...

Hello, In response to the timing analysis attacks presented by Dawn Song et. al. in her paper http://paris.cs.berkeley.edu/~dawnsong/ssh-timing.html we at Silicon Defense developed a patch for openssh to avoid such measures. Timing Analysis Evasion changes were developed by C. Jason Coit and Roel Jonkman of Silicon Defense. These changes cause SSH to send packets unless request not to, exactly every 50 ms. IF no data is ready to be sent, SSH will send a bogus packet with 16 bytes of data (which is the same size as most keystrokes). Thus someone performing timing analysis cannot...

...s concerning keystroke timing being revealed by the timing of openssh packet network transmission. The issue is that keystroke timing is correlated with the plaintext, and openssh users expect their communications to be kept entirely secret. Despite some excellent ideas and patches, such as Jason Coit's http://marc.info/?l=openssh-unix-dev&m=100326089315915&w=2 there has been little done to address this problem. As far as I can tell, the only countermeasure implemented in OpenSSH is that the server will echo back dummy messages (rather than nothing) when users enter passwords. Bu...

...thread [kernel] 0x26 Jul 16 01:45:34 ETG3 kernel: [<f88616a0>] kjournald [jbd] 0x0 Jul 16 01:45:34 ETG3 kernel: Jul 16 01:45:34 ETG3 kernel: Jul 16 01:45:34 ETG3 kernel: Code: 0f 0b 5a 59 6a 04 8b 44 24 18 50 56 e8 4b f1 ff ff 8d 47 48 John Gruber Energy Transfer Group Communications 13150 Coit Road, Suite 126 Dallas, TX 75244 jgruber@energytransfer.com cell: 469.323.0667 office: 214-521-2000 fax: 214-521-8076

I'm reading this fine article on O'Reilly: http://linux.oreillynet.com/lpt/a//linux/2001/11/08/ssh_keystroke.html <quote> The paper concludes that the keystroke timing data observable from today's SSH implementations reveals a dangerously significant amount of information about user terminal sessions--enough to locate typed passwords in the session data stream and reduce the

I am trying to install a Windows program and it claim for install MDAC 2.8 sp1, but an error occur and the program stop. How do I get arround this? Thanks JJ -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.winehq.org/pipermail/wine-users/attachments/20070427/de400314/attachment.htm