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authorKim Alvefur <zash@zash.se>2019-08-25 20:22:35 +0200
committerKim Alvefur <zash@zash.se>2019-08-25 20:22:35 +0200
commitdf3f84ce546ea55074a11a69aab473012369af8f (patch)
treefab97144b71090320f422c0afb46c0f1457cf8e5 /tools
parentd45b4c026faac9849324a8db0747e2729f19362c (diff)
downloadprosody-df3f84ce546ea55074a11a69aab473012369af8f.tar.gz
prosody-df3f84ce546ea55074a11a69aab473012369af8f.zip
core.certmanager: Move EECDH ciphers before EDH in default cipherstring
The original intent of having kEDH before kEECDH was that if a `dhparam` file was specified, this would be interpreted as a preference by the admin for old and well-tested Diffie-Hellman key agreement over newer elliptic curve ones. Otherwise the faster elliptic curve ciphersuites would be preferred. This didn't really work as intended since this affects the ClientHello on outgoing s2s connections, leading to some servers using poorly configured kEDH. With Debian shipping OpenSSL settings that enforce a higher security level, this caused interoperability problems with servers that use DH params smaller than 2048 bits. E.g. jabber.org at the time of this writing has 1024 bit DH params. MattJ says > Curves have won, and OpenSSL is less weird about them now
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