needs testing. really could use the opinion on the crypto from
someone with more experience in this area. haven't done performance
this is cryptfile, an encrypted block file served over styx.
for more information, see the manual page, cryptfile(4).
see http://www.ueber.net/code/r/cryptfile for instructions.
change the "mkconfig" if you don't have $ROOT set. now "mk" to
compile and "mk install" to install the files.
when building from within inferno, insert SYSHOST=Inferno and ROOT=
in the mk invocations to override the values in the mkconfig.
# licence & author
this code is in the public domain, written by mechiel lukkien,
reachable at firstname.lastname@example.org.
- after a "forget" the user enters a password. if it is wrong, the
styx read/write on the file fails. this might upset file servers
such as kfs much. perhaps it is better not to respond to the styx
request until the user enters a correct password.
- add option to change the password (but keep the key of course).
involves making a new salt, deriving a new key, making a new iv and
making a new crypted data (with new random cookie, the same key and
the calculated sha1).