NAME
Crypt::Perl::X509::Extension::keyUsage
SYNOPSIS
my $usage_obj = Crypt::Perl::X509::Extension::keyUsage->new(
    qw(
        digitalSignature
        contentCommitment
        keyEncipherment
        dataEncipherment
        keyAgreement
        keyCertSign
        cRLSign
        encipherOnly
        decipherOnly
    )
);