On Mon, Aug 17, 2015 at 03:53:59PM +0000, Peter Gutmann wrote: > Viktor Dukhovni <ietf-d...@dukhovni.org> writes: > > >I can't answer why, but I know what and when: > > I was trying to avoid finger-pointing so I didn't go through the changelog to > see whodunnit, I was more interested in the motivation. Same for Apple, why > would you implement something that pretty much no-one else (at the time) > supported, and for good reason? > > Having said that though: > > DH-DSS-CAMELLIA256-SHA SSLv3 Kx=DH/DSS Au=DH Enc=Camellia(256) Mac=SHA1 > DH-DSS-CAMELLIA128-SHA SSLv3 Kx=DH/DSS Au=DH Enc=Camellia(128) Mac=SHA1 > DH-DSS-SEED-SHA SSLv3 Kx=DH/DSS Au=DH Enc=SEED(128) Mac=SHA1 > DH-DSS-DES-CBC-SHA SSLv3 Kx=DH/DSS Au=DH Enc=DES(56) Mac=SHA1 > DH-RSA-DES-CBC-SHA SSLv3 Kx=DH/RSA Au=DH Enc=DES(56) Mac=SHA1 > > that sort of stuff just compounds the WTF. Static DH + DSA + single DES, > added in 2012. > W. T. F.
The mechanics of how it happened are simple enough. The ciphers were there all along for around a decade or so, but they were all disabled because the key exchage method was not implemented. What happened in 2012 is that the key exchange got implemented, so presto-magic a new single-DES fixed-DH cipher. I'd like to see more attention paid to changes that explicitly or implicitly introduce new ciphers that fall into the WTF category. I hope we'll be able to exercise more discretion going forward. That said, has https://tools.ietf.org/html/rfc5469 been sufficiently well publicized? I've seen a lot of discussion around the deprecation of RC4, but DES and IDEA seem to have lingered on... -- Viktor. _______________________________________________ TLS mailing list TLS@ietf.org https://www.ietf.org/mailman/listinfo/tls
