--- gvpe/NEWS 2011/06/21 16:27:32 1.102 +++ gvpe/NEWS 2013/07/16 16:44:36 1.114 @@ -1,12 +1,63 @@ GVPE NEWS +TODO: bridge mode, finally? +TODO: gcm mode? +TODO: replace ripemd160 as the only authentication hash. +TODO: increase rsa size. +TODO: replace transport bits by transport endpoint structs? +TODO: ecdh to avoid session replay attacks +TODO: http://incog-izick.blogspot.de/2011/08/using-openssl-aes-gcm.html +TODO: http://stackoverflow.com/questions/12153009/openssl-c-example-of-aes-gcm-using-evp-interfaces + +proposed: 3 types, req, resreq, res + +req (hmac1) rsa(seqno1 hmac1 aes1 seqno2 hmac2 aes2 auth) ecdh1 +res (hmac1) hash(rsa-contents) ecdh2 + +req hmac0(*) rsa(seqno hmac0 hmac aes auth) hkdf-salt ecdh1 +res hmac0(rsa-contents ecdh2) + hmac_key = hkdf(hkdf-salt, hmac | ecdh) + aes_key = hkdf(hkdf-salt, aes | ecdh) + + - INCOMPATIBLE CHANGE: core protocol version 1.0. + - while individual packets couldn't be replayed, a whole session + could be replayed - this has been fixed by an extra key exchange. + - in addition to rsa key exchange and authentication, the handshake now + adds a diffie-hellman key exchange (using curve25119) for perfect + forward secrecy. mac and cipher keys are derived using HKDF. + - rsa key sizes are now configurable and larger (default is 3072). + correspondingly, the minimum mtu is no longer 296 but 576. + - fixed a potential (unverified) buffer overrun on rsa decryption. + - RAND_bytes was used when generating session keys, potentially + leading to temporary freezes when entropy was low. + - gvpectrl no longer generates all missing public keys, but + only missing private keys. private keys are also put + into the configured location. + - the pid-file now accepts %s as nodename as elsewhere. + +2.25 Sat Jul 13 06:42:33 CEST 2013 - INCOMPATIBLE CHANGE: no longer enable udp protocol if no other protocols are enabled - this is necessary when you have nodes with completely unknown protocols, to force mediated connection requests. - INCOMPATIBLE CHANGE: dns transport protocol bumped to version 2. + - core protocol version 0.1, compatible with older releases. + - switch to using RSA_generate_key_ex, which is the badly documented + and needlessly more complicated replacement for the RSA_generate_key + function which is now deprecated. + - support additional hmac hashes: sha256 and sha512, usually truncated. + - change public exponent for rsa keys from 65535 to 65537, for + efficiency reasons - only affects new keys. + - nodes would sometimes declare transport endpoints valid despite + the protocol not being configured locally. + - new global configuration options: chroot, chuser, chuid, chgid, + to chroot to a specified or anonymous new root, and change user id. + - new global configuration options seed_device and seed_interval, + to configure another device than /dev/urandom for random seeds, + and to configure a regular imterval to reseed the rng. + - prefer inet_aton over gethostbyname, as the latter is not guaranteed + to "resolve" literal ip addresses. - configure didn't detect openssl 1.0 because SHA1_version became private (patch by TANIGUCHI Takaki). - - core protocol version 0.1, compatible with older releases. - fix a bug where nodes would tell the other side that it supports the same protocols as that other side, instead of its own. - add zlib when found, as openssl depends on it in newer versions. @@ -26,7 +77,14 @@ needless packets. - poll more aggressively when idling in dns (poll once per second as opposed to once per 5 seconds). + - reduce dns send payload size to allow greater rate of ack + messages (should help sack and ipv6). + - allow for ip options in rawip/icmp transports, even though gvpe + doesn't generate them. + - upgrade to autoconf 2.69, automake 1.11. - upgrade to libev 4 API. + - replace COPYING file by actual GPLv3 - files were relicensed to GPLv3 + earlier but COPYING was forgotten. 2.24 Sat Feb 12 05:15:48 CET 2011 - protocol version 0.1, compatible with older releases.