import sys
sys.path.append(r'/home/pycades/pycades_0.1.22769/build')
import pycades
import base64


class File:
    def __init__(self, file_path):
        self.__file_path = file_path
    
    def get_content_in_bytes(self):
        file = open(self.__file_path, 'rb')
        content = file.read()
        file.close()
        return content

    def get_content_in_base64(self):
        bytes = self.get_content_in_bytes()
        return base64.encodebytes(bytes).decode('ascii') #base64 - это кодировка ascii


class InternalSign:

    def __init__(self, file_path):
        self.__file = File(file_path)
    
    def handle(self):
        signed_data = pycades.SignedData()
        signed_data.ContentEncoding = pycades.CADESCOM_BASE64_TO_BINARY
        signed_data.VerifyCades(self.__file.get_content_in_base64(), pycades.CADESCOM_CADES_BES, False)
        
        signers = signed_data.Signers