from __future__ import annotations
import io
from typing import List, Iterator, Tuple, Optional, Any, TYPE_CHECKING, Callable
from ctypes import *
from datetime import datetime
from numbers import Number
from pdftools_sdk.internal import _lib
from pdftools_sdk.internal.utils import _string_to_utf16, _utf16_to_string
from pdftools_sdk.internal.streams import _StreamDescriptor, _NativeStream
from pdftools_sdk.internal.native_base import _NativeBase
from pdftools_sdk.internal.native_object import _NativeObject
import pdftools_sdk.internal
import pdftools_sdk.pdf.signature
if TYPE_CHECKING:
from pdftools_sdk.pdf.mdp_permissions import MdpPermissions
else:
MdpPermissions = "pdftools_sdk.pdf.mdp_permissions.MdpPermissions"
[docs]
class CertificationSignature(pdftools_sdk.pdf.signature.Signature):
"""
A document certification (MDP) signature that certifies the document
These signatures are also called Document Modification Detection and Prevention (MDP) signatures.
This type of signature enables the detection of rejected changes specified by the author.
"""
@property
def permissions(self) -> MdpPermissions:
"""
The access permissions granted for this document
Note that for encrypted PDF documents, the restrictions defined by this `CertificationSignature` are in addition
to the document's :attr:`pdftools_sdk.pdf.document.Document.permissions` .
Returns:
pdftools_sdk.pdf.mdp_permissions.MdpPermissions
Raises:
StateError:
If the object has already been closed
"""
from pdftools_sdk.pdf.mdp_permissions import MdpPermissions
_lib.PdfToolsPdf_CertificationSignature_GetPermissions.argtypes = [c_void_p]
_lib.PdfToolsPdf_CertificationSignature_GetPermissions.restype = c_int
ret_val = _lib.PdfToolsPdf_CertificationSignature_GetPermissions(self._handle)
if ret_val == 0:
_NativeBase._throw_last_error()
return MdpPermissions(ret_val)
@staticmethod
def _create_dynamic_type(handle):
return CertificationSignature._from_handle(handle)
@classmethod
def _from_handle(cls, handle):
"""
Internal factory method for constructing an instance using an internal handle.
This method creates an instance of the class by bypassing the public constructor.
"""
instance = CertificationSignature.__new__(cls) # Bypass __init__
instance._initialize(handle)
return instance
def _initialize(self, handle):
super()._initialize(handle)