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Date: Sat, 17 Mar 2012 10:01:19 +0530
From: Dhiru Kholia <>
Subject: Re: SSH thread-safety

On Sat, Mar 17, 2012 at 9:45 AM, Solar Designer <> wrote:
> So I got an "undeclared" error about EVP_CIPH_FLAG_CUSTOM_CIPHER.
> I simply #if 0'ed that piece, and the thing compiled and seems to work.

Should be fixed now.

> The speed is slightly better than it was before this round of changes
> (that is, before your introduction of locking). :-)  I am getting almost
> 700k c/s on 8-core.  I am running the high thread count tests now.

Wish I had an 8-core (or 16-core) CPU. :-)

> My biggest concern is that the code is highly non-portable to different
> versions of OpenSSL now.  I am not sure what we can do about that.

The only way to ensure compatibility is to test with all major version
of OpenSSL between 0.9.7 and 1.0.1 (current). I think that the changes
required to ensure portability wouldn't be very hard to do.


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