8 @item @url{https://password-hashing.net/#argon2, Argon2d} is used instead
9 of PBKDF2 for password verifier hashing.
10 @item Client's identity is stored inside the verifier, so it simplifies
11 server-side configuration and the code.
16 @item Handshake messages can be noised: their messages lengths are
17 hidden. Now they are indistinguishable from transport messages.
18 @item Parallelized clients processing on the server side.
19 @item Much higher overall performance.
20 @item Single JSON file server configuration.
25 @item Ability to use @ref{Network, TCP} network transport.
26 Server can listen on both UDP and TCP sockets.
27 @item Ability to use @ref{Proxy, HTTP proxies} (through CONNECT method)
28 for accessing the server. Server can also emulate HTTP proxy behaviour.
29 @item Updated Poly1305 library with ARM-related bugfixes.
30 @item Go 1.5+ version is highly recommended because of performance
36 @item Ability to use external @ref{EGD}-compatible PRNGs. Now you are
37 able to use GoVPN even on systems with the bad @code{/dev/random},
38 providing higher quality entropy from external sources.
39 @item Removed @code{-noncediff} option. It is replaced with in-memory
40 storage of seen nonces, thus eliminating possible replay attacks at all
41 without performance degradation related to inbound packets reordering.
46 @item Compatibility with an old GNU Make 3.x. Previously only BSD Make
47 and GNU Make 4.x were supported.
48 @item /dev/urandom is used for correct client identity generation under
49 GNU/Linux systems. Previously /dev/random can produce less than required
51 @item Updated user manual examples.
57 Deterministic building: dependent libraries source code commits are
58 fixed in our makefiles.
60 No Internet connection is needed for building the source code: all
61 required libraries are included in release tarballs.
63 FreeBSD Make compatibility. GNU Make is not necessary anymore.
69 Diffie-Hellman public keys are encoded with Elligator algorithm when
70 sending over the wire, making them indistinguishable from the random
71 strings, preventing detection of successful decryption try when guessing
72 passwords (that are used to create DSA public keys). But this will
73 consume twice entropy for DH key generation in average.
79 EKE protocol is replaced by Augmented-EKE and static symmetric (both
80 sides have it) pre-shared key replaced with server-side verifier. This
81 requires, 64 more bytes in handshake traffic, Ed25519 dependency with
82 corresponding sign/verify computations, PBKDF2 dependency and its
83 usage on the client side during handshake.
85 A-EKE with PBKDF2-based verifiers is resistant to dictionary attacks,
86 can use human memorable passphrases instead of static keys and
87 server-side verifiers can not be used for authentication (compromised
88 server does not leak client's authentication keys/passphrases).
91 Changed transport message structure: added payload packet's length.
92 This will increase transport overhead for two bytes, but heartbeat
93 packets became smaller
96 Ability to hide underlying packets lengths by appending noise, junk
97 data during transmission. Each packet can be fill up-ed to its
101 Ability to hide underlying packets appearance rate, by generating
102 Constant Packet Rate traffic. This includes noise generation too.
104 Per-peer @code{-timeout}, @code{-noncediff}, @code{-noise} and
105 @code{-cpr} configuration options for server.
111 Added ability to optionally run built-in HTTP-server responding with
112 JSON of all known connected peers information. Real-time client's
116 Documentation is explicitly licenced under GNU FDL 1.3+.
122 Handshake packets became indistinguishable from the random.
123 Now all GoVPN's traffic is the noise for men in the middle.
126 Handshake messages are smaller (16% traffic reduce).
129 Adversary now can not create malicious fake handshake packets that
130 will force server to generate private DH key, preventing entropy
131 consuming and resource heavy computations.
136 @item Fixed several possible channel deadlocks.
141 @item Fixed Linux-related building.
146 @item Added clients identification.
147 @item Simultaneous several clients support by server.
148 @item Per-client up/down scripts.
153 @item Nonce obfuscation/encryption.
158 @item Performance optimizations.
163 @item Heartbeat feature.
164 @item Rehandshake feature.
165 @item up- and down- optinal scripts.
170 @item FreeBSD support.
175 @item Initial stable release.