decode_asn1.py 文件源码

def _decode_name_constraints(backend, nc):
    nc = backend._ffi.cast("NAME_CONSTRAINTS *", nc)
    nc = backend._ffi.gc(nc, backend._lib.NAME_CONSTRAINTS_free)
    permitted = _decode_general_subtrees(backend, nc.permittedSubtrees)
    excluded = _decode_general_subtrees(backend, nc.excludedSubtrees)
    return x509.NameConstraints(
        permitted_subtrees=permitted, excluded_subtrees=excluded
    )