@node Top
@top GoVPN
-This manual is for GoVPN -- simple secure free software
-virtual private network (VPN) daemon.
+This manual is for GoVPN -- simple secure free software virtual private
+network (VPN) daemon, written entirely on Go programming language.
@end ifnottex
@menu
* Overview::
* News::
-* Getting source code::
+* Getting and building source code::
* User manual::
* Developer manual::
* Reporting bugs::
@unnumbered Overview
GoVPN is simple secure virtual private network daemon. It uses
-Diffie-Hellman Encrypted Key Exchange (DH-EKE) for mutual zero-knowledge
-peers authentication and authenticated encrypted data transport.
+@url{https://en.wikipedia.org/wiki/Encrypted_key_exchange, Diffie-Hellman Encrypted Key Exchange}
+(DH-EKE) for mutual zero-knowledge peers authentication and
+authenticated encrypted data transport. It is written entirely on
+@url{http://golang.org/, Go programming language}.
All packets captured on network interface are encrypted, authenticated
and sent to remote server, that writes them to his interface, and vice
encrypted (obfuscated) during transmission.
@itemize @bullet
-@item GNU/Linux and FreeBSD support
+@item
+Works with @url{https://en.wikipedia.org/wiki/TAP_(network_driver), TAP}
+network interfaces on top of UDP entirely
+@item
+@url{https://www.gnu.org/, GNU}/Linux and
+@url{http://www.freebsd.org/, FreeBSD} support
@item IPv6 compatible
@item Encrypted and authenticated transport
@item Relatively fast handshake
-@item Replay attack protection
@item
-Perfect forward secrecy (if long-term pre-shared keys are compromised,
-no captured traffic can be decrypted anyway)
+@url{https://en.wikipedia.org/wiki/Replay_attack, Replay attack} protection
+@item
+@url{https://en.wikipedia.org/wiki/Forward_secrecy, Perfect forward secrecy}
+(if long-term pre-shared keys are compromised, no captured traffic can
+be decrypted anyway)
@item
Mutual two-side authentication (noone will send real network interface
data unless the other side is authenticated)
@item
-Zero knowledge authentication (pre-shared key is not transmitted in
-any form between the peers, not even it's hash value)
+@url{https://en.wikipedia.org/wiki/Zero-knowledge_password_proof, Zero knowledge}
+authentication (pre-shared key is not transmitted in any form between
+the peers, not even it's hash value)
@item Built-in rehandshake and heartbeat features
@item Several simultaneous clients support
@end itemize
@verbatiminclude ../NEWS
-@node Getting source code
-@unnumbered Getting source code
+@node Getting and building source code
+@unnumbered Getting and building source code
-GoVPN is written on Go programming language and depends on
-@code{golang.org/x/crypto} libraries.
+GoVPN is written on Go programming language, But
+@url{https://www.gnu.org/software/make/, Make} program is recommended
+also to be used. @url{https://www.gnu.org/software/texinfo/, Texinfo} is
+used for building documentation. Also it depends on
+@code{golang.org/x/crypto} Go libraries.
@include download.texi
trusted source. Alternatively check this page from other sources and
look for the mailing list announcements.
-@verbatim
-pub rsa2048/FFE2F4A1 2015-03-10
-uid [ultimate] Sergey Matveev (GoVPN release signing key) <stargrave@stargrave.org>
-sub rsa2048/8A6C750A 2015-03-10
-
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------END PGP PUBLIC KEY BLOCK-----
-@end verbatim
+You have to set up @code{$GOPATH} properly first. After that you can
+just type @code{make} and all necessary Go libraries will be installed
+and client/server binaries are built in the current directory.
+
+@include pubkey.texi
@node User manual
@unnumbered User manual
@table @asis
@item Nonce and identification encryption
-XTEA
+@url{http://143.53.36.235:8080/tea.htm, XTEA}
@item Data encryption
-Salsa20
+@url{http://cr.yp.to/snuffle.html, Salsa20}
@item Message authentication
-Poly1305
+@url{http://cr.yp.to/mac.html, Poly1305}
@item Password authenticated key agreement
-Curve25519 based DH-EKE
+@url{http://cr.yp.to/ecdh.html, Curve25519} based DH-EKE
@item Packet overhead
24 bytes per packet
@item Handshake overhead
Each transport message is indistinguishable from pseudo random noise.
-@code{SERIAL} is message's serial number. Odds are reserved for client(→server)
-messages, evens for server(→client) messages.
+@code{SERIAL} is message's serial number. Odds are reserved for
+client(→server) messages, evens for server(→client) messages.
@code{ENCn} is XTEA block cipher algorithm used here as PRP (pseudo
random permutation) to randomize, obfuscate @code{SERIAL}. Plaintext
--- /dev/null
+@verbatim
+pub rsa2048/FFE2F4A1 2015-03-10
+uid [ultimate] Sergey Matveev (GoVPN release signing key) <stargrave@stargrave.org>
+sub rsa2048/8A6C750A 2015-03-10
+
+-----BEGIN PGP PUBLIC KEY BLOCK-----
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+-----END PGP PUBLIC KEY BLOCK-----
+@end verbatim