In message <[email protected]> on Sat, 10 Feb 2018 
22:32:53 +0000, Viktor Dukhovni <[email protected]> said:

viktor> On Sat, Feb 10, 2018 at 10:19:20PM +0000, Salz, Rich wrote:
viktor> 
viktor> >     > Is blowfish actually outdated?  I thought it had some 
significant use,
viktor> >     > and don't recall any major weakness...
viktor> >     
viktor> >     In particular, IIRC OpenSSH uses blowfish, and links to OpenSSL 
for
viktor> >     the underlying cipher...
viktor> > 
viktor> > PGP use to be a heavy user, but now it only decrypts or does 
key-wrapping for compatibility; it no longer uses blowfish to encrypt data.
viktor> > 
viktor> > SSH uses it, but according to 
https://bbs.archlinux.org/viewtopic.php?id=188613 it has been removed, circa 
2014.
viktor> > Schneier recommends not using it, and use its successor(s) instead, 
which we don't implement.
viktor> 
viktor> Removed in 2014 is much too recent, there are still LTS systems
viktor> with older SSH versions, and modern platforms that may want to
viktor> interoperate.  So I'm very reluctant to support removal of blowfish
viktor> ASM at this time...

Those same systems will probably not have the newest OpenSSL either,
and OpenSSH on those machines will certainly not be linked with a
newer OpenSSL...

Cheers,
Richard

-- 
Richard Levitte         [email protected]
OpenSSL Project         http://www.openssl.org/~levitte/
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