strongSwan

= openac =

'''openac''' is intended to be used by an ''Authorization Authority (AA)'' to generate and sign X.509 attribute
certificates. Currently only the inclusion of ''group attributes'' is supported. An attribute certificate is linked
to a holder by including the issuer and serial number of the holder's X.509 certificate.

The following command line options are supported:

''--help''
display the usage message.

''--version''
display the version of ''openac''.

''--optionsfrom <filename>''
adds the contents of the file to the argument list. If ''<filename>'' is a relative path then the
file is searched in the ''/etc/openac'' directory.

''--quiet''
By default ''openac'' logs all control output both to syslog and stderr. With the ''--quiet'' option no
output is written to stderr.

''--days <days>''
Validity of the X.509 attribute certificate in days. If neither the ''--days'' nor the ''--hours'' option
is specified then a default validity interval of 1 day is assumed. The ''--days'' option can be
combined with the ''--hours'' option.

''--hours <hours>''
Validity of the X.509 attribute certificate in hours. If neither the ''--hours'' nor the ''--days'' option
is specified then a default validity interval of 24 hours is assumed. The ''--hours'' option can be
combined with the ''--days'' option.

''--startdate YYYYMMDDHHMMSSZ''
defines the ''notBefore'' date when the X.509 attribute certificate becomes valid. The date ''YYYYMMDDHHMMSS''
must be specified in UTC (Zulu time). If the ''--startdate'' option is not specified then
the current time is taken as a default.

''--stopdate YYYYMMDDHHMMSSZ''
defines the ''notAfter'' date when the X.509 attribute certificate will expire. The date ''YYYYMMDDHHMMSS''
must be specified in UTC (Zulu time). If the ''--stopdate'' option is not specified then the default
''notAfter'' value is computed by adding the validity interval specified by the ''--days'' and/or
''--days'' options to the ''notBefore'' date.

''--cert <certfile>''
specifies the file containing the X.509 certificate of the Authorization Authority.
Thanks to the automatic format recognition the certificate can be stored either in PEM or DER format.

''--key <keyfile>''
specifies the encrypted file containing the private RSA key of the Authoritzation Authority.
The private key is stored in PKCS#1 format.

''--password <password>''
specifies the password with which the private RSA keyfile defined by the ''--key'' option has been
protected. If the option is missing then the password is prompted for on the command line.

''--usercert <certfile>''
specifies file containing the X.509 certificate of the user to which the generated attribute
certificate will apply. Thanks to the automatic format recognition the certificate file can be
stored either in PEM or DER format.

''--groups <attr1>,<attr2>''
specifies a comma-separated list of ''group attributes'' that will go into the X.509 attribute
certificate.

''--out <filename>
specifies the file where the generated X.509 attribute certificate will be stored to in binary
DER format.