NAME

     certpatch — add subjectAltName identities to X.509 certificates

SYNOPSIS

     certpatch [-t identity-type] -i identity -k signing-key input-certificate output-certificate

DESCRIPTION

     certpatch alters PEM-encoded X.509 certificates by adding a subjectAltName extension containing an identity
     used by the signature-based authentication schemes of the ISAKMP protocol.  After the addition the
     certificate will be signed once again with the supplied CA signing key.

     The options are as follows:

     -t identity-type
             If given, the -t option specifies the type of the given identity.  Currently ip, fqdn, and ufqdn
             are recognized.  The default is ip.

     -i identity
             The -i option takes an argument which is the identity to put into the subjectAltName field of the
             certificate.  If the identity-type is ip, this argument should be an IPv4 address in dotted decimal
             notation.

     -k signing-key
             The -k option specifies the key used for signing the certificate once the subjectAltName extension
             has been added.  The key is specified by the filename where it is stored in PEM format.

SEE ALSO

     isakmpd(8), ssl(8)