> From: owner-openssl-us...@openssl.org [mailto:owner-openssl-
> us...@openssl.org] On Behalf Of Salz, Rich
> Sent: Tuesday, 09 September, 2014 11:35
> To: openssl-users@openssl.org
> Subject: RE: Value of DEFAULT cipher suite
>
> > Far more productive than disabling RC4 would be ensuring that it is not the
> > preferred cipher suite when better options are enabled.
>
> I am not disabling RC4. I am saying that applications that want to use it
> will, after the post-1.0.2 release is adopted, need to take pro-active
> action.
Which is tantamount to disabling it, for any applications that:
- Link OpenSSL dynamically and don't set a non-default cipher suite list
- Are rebuilt with the new OpenSSL but aren't changed to set a non-default
cipher suite list
You're talking about violating the Principle of Least Surprise, which is rarely
a good idea.
> This follows the current thinking of the IETF.
Glossing "what's currently in an I-D" as "the current thinking of the IETF" is
quite a stretch.
And UTA applies to *applications*, not to libraries.
And personally I think UTA is somewhat misguided, particularly in its excessive
use of RFC 2119 conditional-compliance ("MUST") requirements in sections that
the text refers to as "recommendations"; and I'm not convinced the authors have
done a good job of considering the ramifications.
As for the PRC4 I-D: It too applies to applications; and unless OpenSSL is
going to enforce the final requirement of part 2 ("the TLS server MUST
terminate the handshake"), I can't see how you can claim your proposed change
is "following" the I-D. Without that final requirement, the other two are
potentially more dangerous than allowing RC4.
> It's just being standards-compliant.
Which standard are we talking about? In your other message you cited to I-Ds,
which are NOT standards.
--
Michael Wojcik
Technology Specialist, Micro Focus
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