NAME
kaya-rekey - Binary key regeneration for kaya web applications
SYNOPSIS
kaya-rekey FILE1 [FILE2 [...]]
DESCRIPTION
kaya-rekey gives all Kaya binaries specified on the command line a new
application secret key
The application secret key makes webapps and CGI programs secure, by
encrypting the state transfers. If you receive a webapp or CGI binary
from someone else, or you believe someone untrusted has had read access
to your binary, you can use the kaya-rekey application to generate a
new application secret key without needing a recompile.
Binary distributors of Kaya applications are strongly recommended to
use ’kaya-rekey’ as part of the installation process.
Prior to Kaya 0.3.0 this utility was called rekey
OBTAINING
The latest release of Kaya can be obtained from
<http://kayalang.org/download>
Development versions can be obtained using darcs(1) from
<http://kayalang.org/darcs/>
SECURITY
kaya-rekey will use /dev/random to generate the new key if possible. If
/dev/random is unavailable (Windows without MinGW, for example), the
new key will be generated pseudo-randomly. This may allow an attacker
to easily guess the new key. In environments where security is a
concern, therefore, we strongly recommend recompiling with kayac(1)
rather than using kaya-rekey if /dev/random is unavailable.
kaya-rekey will give a warning when rekeying if /dev/random is
unavailable.
BUGS
Please report bugs in kaya-rekey to <kaya@kayalang.org>
kaya-rekey cannot rekey Kaya binaries generated with a compiler older
than the switch to AES256 encryption (i.e. older than 0.2.0 final
version)
In rare cases, kaya-rekey may not be able to successfully rekey a file
and will print an error instead. You must recompile in this case to get
a new application key.
LICENSE
kaya-rekey is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License (version 2 or any
later version) as published by the Free Software Foundation.
SEE ALSO
kayac(1)