Suggested doc update to fwknop man pages to accurately describe the usage
of digits instead of bytes for SPA random data. About 53 bits of entropy
are actually used, although this is in addition to the 64-bit random salt
in for key derivation used by PBKDF1 in Rjindael CBC mode.
This commit bumps the fwknop version to 2.5 and sets the libfko version to 2.0 to
signal incompatibility with older libfko versions. Backwards compatibility is
maintained in SPA packet construction, but function prototypes in libfko-2.0 are
no longer compatible with older versions.
This commit also returns non-zero exit status under 'fwknopd --status' if there
is no existing fwknopd process. This is better than always exiting with a zero
status regardless of whether fwknopd is already running or not, and adds a level
of scriptability to --status usage. This change was suggested by George Herlin.
This change brings similar functionality to the client as the GPG_ALLOW_NO_PW
keyword in the server access.conf file. Although this option is less likely
to be used than the analogous server functionality, it stands to reason that
the client should offer this feature. The test suite has also been updated to
not use the --get-key option for the 'no password' GPG tests.
This change simplifies the fwknop client usage by allowing the -D argument to
be used as the stanza name if -n is not also specified in --save-rc-stanza
mode.
