=head1 SYNOPSIS

B<webjob-dsvtool> B<{-s|--sign-payload}> B<{-k|--key-file}> B<key> B<payload> B<[payload ...]>

B<webjob-dsvtool> B<{-V|--verify-signature}> B<{-f|--cert-file}> B<cert> B<payload> B<signature>

B<webjob-dsvtool> B<{-V|--verify-signature}> B<{-t|--cert-tree}> B<tree> B<payload> B<signature>

B<webjob-dsvtool> B<{-v|--version}>

Note: Command line arguments are position dependent, and argument
snuggling (e.g., '-sk' or '-Vf') is not supported.  All arguments and
their values (if any) must be separated by whitespace.