@node Developer manual
@unnumbered Developer manual

Pay attention how to get @ref{Development source code}.

@table @asis
@item Nonce and identity encryption
@url{http://143.53.36.235:8080/tea.htm, XTEA}.
@item Data encryption
@url{http://cr.yp.to/snuffle.html, Salsa20}.
@item Message authentication
@url{http://cr.yp.to/mac.html, Poly1305}.
@item Password authenticated key agreement
DH-A-EKE powered by @url{http://cr.yp.to/ecdh.html, Curve25519}
and @url{http://ed25519.cr.yp.to/, Ed25519}.
@item DH elliptic-curve point encoding for public keys
@url{http://elligator.cr.yp.to/, Elligator}.
@item Key derivation function for verifier generation
@url{https://en.wikipedia.org/wiki/PBKDF2, PBKDF2} based on
@url{https://en.wikipedia.org/wiki/SHA-2, SHA-512}.
@item Packet overhead
26 bytes per packet. Two more bytes in TCP mode.
@item Handshake overhead
4 UDP (2 from client, 2 from server) packets (round-trips for TCP),
264 bytes total payload (8 bytes more in TCP mode).
@item Entropy required
832 bits in average on client, 832 bits in average on server side per
handshake.
@end table

@menu
* Verifier structure::
* Transport protocol::
* Handshake protocol::
@end menu

@include verifierstruct.texi
@include transport.texi
@include handshake.texi