8 @item New optional @ref{Encless, encryptionless mode} of operation.
9 Technically no encryption functions are applied for outgoing packets, so
10 you can not be forced to reveal your encryption keys or sued for
12 @item @ref{MTU}s are configured on per-user basis.
13 @item Simplified payload padding scheme, saving one byte of data.
14 @item Ability to specify TAP interface name explicitly without any
15 up-scripts for convenience.
16 @item @code{govpn-verifier} utility also can use @ref{EGD}.
21 @item Fixed non-critical bug when server may fail if up-script is not
22 executed successfully.
27 @item @url{https://password-hashing.net/#argon2, Argon2d} is used instead
28 of PBKDF2 for password verifier hashing.
29 @item Client's identity is stored inside the verifier, so it simplifies
30 server-side configuration and the code.
35 @item Handshake messages can be noised: their messages lengths are
36 hidden. Now they are indistinguishable from transport messages.
37 @item Parallelized clients processing on the server side.
38 @item Much higher overall performance.
39 @item Single JSON file server configuration.
44 @item Ability to use @ref{Network, TCP} network transport.
45 Server can listen on both UDP and TCP sockets.
46 @item Ability to use @ref{Proxy, HTTP proxies} (through CONNECT method)
47 for accessing the server. Server can also emulate HTTP proxy behaviour.
48 @item Updated Poly1305 library with ARM-related bugfixes.
49 @item Go 1.5+ version is highly recommended because of performance
55 @item Ability to use external @ref{EGD}-compatible PRNGs. Now you are
56 able to use GoVPN even on systems with the bad @code{/dev/random},
57 providing higher quality entropy from external sources.
58 @item Removed @code{-noncediff} option. It is replaced with in-memory
59 storage of seen nonces, thus eliminating possible replay attacks at all
60 without performance degradation related to inbound packets reordering.
65 @item Compatibility with an old GNU Make 3.x. Previously only BSD Make
66 and GNU Make 4.x were supported.
67 @item /dev/urandom is used for correct client identity generation under
68 GNU/Linux systems. Previously /dev/random can produce less than required
70 @item Updated user manual examples.
76 Deterministic building: dependent libraries source code commits are
77 fixed in our makefiles.
79 No Internet connection is needed for building the source code: all
80 required libraries are included in release tarballs.
82 FreeBSD Make compatibility. GNU Make is not necessary anymore.
88 Diffie-Hellman public keys are encoded with Elligator algorithm when
89 sending over the wire, making them indistinguishable from the random
90 strings, preventing detection of successful decryption try when guessing
91 passwords (that are used to create DSA public keys). But this will
92 consume twice entropy for DH key generation in average.
98 EKE protocol is replaced by Augmented-EKE and static symmetric (both
99 sides have it) pre-shared key replaced with server-side verifier. This
100 requires, 64 more bytes in handshake traffic, Ed25519 dependency with
101 corresponding sign/verify computations, PBKDF2 dependency and its
102 usage on the client side during handshake.
104 A-EKE with PBKDF2-based verifiers is resistant to dictionary attacks,
105 can use human memorable passphrases instead of static keys and
106 server-side verifiers can not be used for authentication (compromised
107 server does not leak client's authentication keys/passphrases).
110 Changed transport message structure: added payload packet's length.
111 This will increase transport overhead for two bytes, but heartbeat
112 packets became smaller
115 Ability to hide underlying packets lengths by appending noise, junk
116 data during transmission. Each packet can be fill up-ed to its
120 Ability to hide underlying packets appearance rate, by generating
121 Constant Packet Rate traffic. This includes noise generation too.
123 Per-peer @code{-timeout}, @code{-noncediff}, @code{-noise} and
124 @code{-cpr} configuration options for server.
130 Added ability to optionally run built-in HTTP-server responding with
131 JSON of all known connected peers information. Real-time client's
135 Documentation is explicitly licenced under GNU FDL 1.3+.
141 Handshake packets became indistinguishable from the random.
142 Now all GoVPN's traffic is the noise for men in the middle.
145 Handshake messages are smaller (16% traffic reduce).
148 Adversary now can not create malicious fake handshake packets that
149 will force server to generate private DH key, preventing entropy
150 consuming and resource heavy computations.
155 @item Fixed several possible channel deadlocks.
160 @item Fixed Linux-related building.
165 @item Added clients identification.
166 @item Simultaneous several clients support by server.
167 @item Per-client up/down scripts.
172 @item Nonce obfuscation/encryption.
177 @item Performance optimizations.
182 @item Heartbeat feature.
183 @item Rehandshake feature.
184 @item up- and down- optinal scripts.
189 @item FreeBSD support.
194 @item Initial stable release.