--- gvpe/NEWS	2013/07/17 04:36:09	1.115
+++ gvpe/NEWS	2015/07/30 19:03:44	1.127
@@ -5,39 +5,56 @@
 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)
-
-TODO: very much larger intiial seed
-TODO: don't use RAND_pseudo_bytes :/
+TODO: verify
+TODO: make sense of overhead calculation
+TODO: if-up &c should not be scripts?
+TODO: ipv6
+TODO: gvpectrl should not use default privatekey,. or maybe document it better
 	- INCOMPATIBLE CHANGE: core protocol version 1.0.
+        - INCOMPATIBLE CHANGE: node sections are now introduced
+          with "node nodename", not "node = nodename".
         - while individual packets couldn't be replayed, a whole session
           could be replayed - this has been fixed by an extra key exchange.
+        - fix a delete vs. delete [] mismatch in the central logging function.
         - 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.
+        - new per-node low-power setting that tries to reduce cpu/network usage.
+        - router reconnects could cause excessive rekeying on other connections.
         - 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.
+        - switch to counter mode (only aes supported at the moment in
+          openssl). this gets rid of the need to generate a random iv,
+          is likely more secure (and, as a side effect, gets rid of
+          slow randomness generation. counter mode is often faster
+          then cbc mode as well, and packets are smaller).
         - no longer use RAND_bytes to generate session keys - you NEED
           a real source of entropy now (e.g. egd or /dev/random - see the
           openssl documentation).
-
+        - multiple node statements for the same node are now supported
+          and will be merged.
+        - a new directive "global" switches back to the global section
+          of the config file.
+        - if-up scripts can now be specified with absolute paths.
+        - new global option: serial, to detect configuration mismatches.
+        - use HKDF as authentication proof, not HMAC or a plain hash
+          (hint by Ilmari Karonen).
+        - during rekeying or conenction establishments, hmac authentication
+          errors could occur and reset the connection. Transient hmac
+          authentication errors are now being ignored for 3 seconds.
+        - log the reason for a conneciton loss.
+        - use a (hopefully) constant time memcmp to compare internal secrets.
+        - fix a (harmless) errornous out of bounds stack read that would trigger
+          gcc's -fsanitize=address.
+          
 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
@@ -56,7 +73,7 @@
           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.
+          and to configure a regular interval 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
@@ -71,7 +88,7 @@
         - major, but incremental, dns transport improvements:
            - do not simply abort in some error cases in the dns transport,
              but try to recover.
-           - allow lowercase/uppercase alises for base-n encodings that do
+           - allow lowercase/uppercase aliases for base-n encodings that do
              not rely on case.
            - use base26 instead of base22 encoding for dns syn's, and
              base36 instead of base22 for headers (saves one byte/packet).