8 @item @anchor{Release_5.3} Release 5.3
11 @item Fixed minor bug with @code{newclient.sh} that caught
12 "Passphrase:" prompt and inserted it into example YAML output.
13 Just replaced stdout output to stderr for that prompt.
16 @item @anchor{Release_5.2} Release 5.2
19 @item Ability to read passphrases directly from the terminal (user's
20 input) without using of keyfiles. @code{storekey.sh} utility removed.
23 @item @anchor{Release_5.1} Release 5.1
26 @item Server is configured using @url{http://yaml.org/, YAML} file. It
27 is very convenient to have comments and templates, comparing to JSON.
28 @item Incompatible with previous versions replacement of @emph{HSalsa20}
29 with @emph{BLAKE2b} in handshake code.
32 @item @anchor{Release_5.0} Release 5.0
35 @item New optional @ref{Encless, encryptionless mode} of operation.
36 Technically no encryption functions are applied for outgoing packets, so
37 you can not be forced to reveal your encryption keys or sued for
39 @item @ref{MTU}s are configured on per-user basis.
40 @item Simplified payload padding scheme, saving one byte of data.
41 @item Ability to specify TAP interface name explicitly without any
42 up-scripts for convenience.
43 @item @code{govpn-verifier} utility also can use @ref{EGD}.
46 @item @anchor{Release_4.2} Release 4.2
49 @item Fixed non-critical bug when server may fail if up-script is not
50 executed successfully.
53 @item @anchor{Release_4.1} Release 4.1
56 @item @url{https://password-hashing.net/#argon2, Argon2d} is used instead
57 of PBKDF2 for password verifier hashing.
58 @item Client's identity is stored inside the verifier, so it simplifies
59 server-side configuration and the code.
62 @item @anchor{Release_4.0} Release 4.0
65 @item Handshake messages can be noised: their messages lengths are
66 hidden. Now they are indistinguishable from transport messages.
67 @item Parallelized clients processing on the server side.
68 @item Much higher overall performance.
69 @item Single JSON file server configuration.
72 @item @anchor{Release_3.5} Release 3.5
75 @item Ability to use @ref{Network, TCP} network transport.
76 Server can listen on both UDP and TCP sockets.
77 @item Ability to use @ref{Proxy, HTTP proxies} (through CONNECT method)
78 for accessing the server. Server can also emulate HTTP proxy behaviour.
79 @item Updated Poly1305 library with ARM-related bugfixes.
80 @item Go 1.5+ version is highly recommended because of performance
84 @item @anchor{Release_3.4} Release 3.4
87 @item Ability to use external @ref{EGD}-compatible PRNGs. Now you are
88 able to use GoVPN even on systems with the bad @code{/dev/random},
89 providing higher quality entropy from external sources.
90 @item Removed @code{-noncediff} option. It is replaced with in-memory
91 storage of seen nonces, thus eliminating possible replay attacks at all
92 without performance degradation related to inbound packets reordering.
95 @item @anchor{Release_3.3} Release 3.3
98 @item Compatibility with an old GNU Make 3.x. Previously only BSD Make
99 and GNU Make 4.x were supported.
100 @item /dev/urandom is used for correct client identity generation under
101 GNU/Linux systems. Previously /dev/random can produce less than required
103 @item Updated user manual examples.
106 @item @anchor{Release_3.2} Release 3.2
110 Deterministic building: dependent libraries source code commits are
111 fixed in our makefiles.
113 No Internet connection is needed for building the source code: all
114 required libraries are included in release tarballs.
116 FreeBSD Make compatibility. GNU Make is not necessary anymore.
119 @item @anchor{Release_3.1} Release 3.1
123 Diffie-Hellman public keys are encoded with Elligator algorithm when
124 sending over the wire, making them indistinguishable from the random
125 strings, preventing detection of successful decryption try when guessing
126 passwords (that are used to create DSA public keys). But this will
127 consume twice entropy for DH key generation in average.
130 @item @anchor{Release_3.0} Release 3.0
134 EKE protocol is replaced by Augmented-EKE and static symmetric (both
135 sides have it) pre-shared key replaced with server-side verifier. This
136 requires, 64 more bytes in handshake traffic, Ed25519 dependency with
137 corresponding sign/verify computations, PBKDF2 dependency and its
138 usage on the client side during handshake.
140 A-EKE with PBKDF2-based verifiers is resistant to dictionary attacks,
141 can use human memorable passphrases instead of static keys and
142 server-side verifiers can not be used for authentication (compromised
143 server does not leak client's authentication keys/passphrases).
146 Changed transport message structure: added payload packet's length.
147 This will increase transport overhead for two bytes, but heartbeat
148 packets became smaller
151 Ability to hide underlying packets lengths by appending noise, junk
152 data during transmission. Each packet can be fill up-ed to its
156 Ability to hide underlying packets appearance rate, by generating
157 Constant Packet Rate traffic. This includes noise generation too.
159 Per-peer @code{-timeout}, @code{-noncediff}, @code{-noise} and
160 @code{-cpr} configuration options for server.
163 @item @anchor{Release_2.4} Release 2.4
167 Added ability to optionally run built-in HTTP-server responding with
168 JSON of all known connected peers information. Real-time client's
172 Documentation is explicitly licenced under GNU FDL 1.3+.
175 @item @anchor{Release_2.3} Release 2.3
179 Handshake packets became indistinguishable from the random.
180 Now all GoVPN's traffic is the noise for men in the middle.
183 Handshake messages are smaller (16% traffic reduce).
186 Adversary now can not create malicious fake handshake packets that
187 will force server to generate private DH key, preventing entropy
188 consuming and resource heavy computations.
191 @item @anchor{Release_2.2} Release 2.2
194 @item Fixed several possible channel deadlocks.
197 @item @anchor{Release_2.1} Release 2.1
200 @item Fixed Linux-related building.
203 @item @anchor{Release_2.0} Release 2.0
206 @item Added clients identification.
207 @item Simultaneous several clients support by server.
208 @item Per-client up/down scripts.
211 @item @anchor{Release_1.5} Release 1.5
214 @item Nonce obfuscation/encryption.
217 @item @anchor{Release_1.4} Release 1.4
220 @item Performance optimizations.
223 @item @anchor{Release_1.3} Release 1.3
226 @item Heartbeat feature.
227 @item Rehandshake feature.
228 @item up- and down- optinal scripts.
231 @item @anchor{Release_1.1} Release 1.1
234 @item FreeBSD support.
237 @item @anchor{Release_1.0} Release 1.0
240 @item Initial stable release.