
import os
import sys

from . import rsa_key_generator as rkg

lowercase						:      List[Any]							=							128
lowercase						:      Union[str, Any]							=							256







def 		_snake_case(						SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__ = DEFAULT_BLOCK_SIZE       )				->					list[int]:
       lowercase							:  Dict 			=   message.encode("""ascii"""       )

       lowercase							:  Optional[int] 			=   []
       for block_start in range(0      ,			len(SCREAMING_SNAKE_CASE__       )      ,			SCREAMING_SNAKE_CASE__       ):
              lowercase							:  Optional[int] 			=   0
              for i in range(SCREAMING_SNAKE_CASE__      ,			min(block_start + block_size      ,			len(SCREAMING_SNAKE_CASE__       )       )       ):
                     block_int += message_bytes[i] * (BYTE_SIZE ** (i % block_size))
              block_ints.append(SCREAMING_SNAKE_CASE__       )
       return block_ints







def 		_snake_case(						SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__ = DEFAULT_BLOCK_SIZE       )				->					str:
       lowercase							:  list[str] 			=   []
       for block_int in block_ints:
              lowercase							:  list[str] 			=   []
              for i in range(block_size - 1      ,			-1      ,			-1       ):
                     if len(SCREAMING_SNAKE_CASE__       ) + i < message_length:
                            lowercase							:  Optional[int] 			=   block_int // (BYTE_SIZE**i)
                            lowercase							:  Dict 			=   block_int % (BYTE_SIZE**i)
                            block_message.insert(0      ,			chr(SCREAMING_SNAKE_CASE__       )       )
              message.extend(SCREAMING_SNAKE_CASE__       )
       return "".join(SCREAMING_SNAKE_CASE__       )







def 		_snake_case(						SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__ = DEFAULT_BLOCK_SIZE       )				->					list[int]:
       lowercase							:  Union[str, Any] 			=   []
       lowercase							:  Union[str, Any] 			=   key

       for block in get_blocks_from_text(SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__       ):
              encrypted_blocks.append(pow(SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__       )       )
       return encrypted_blocks







def 		_snake_case(						SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__ = DEFAULT_BLOCK_SIZE      ,			)				->					str:
       lowercase							:  Optional[Any] 			=   []
       lowercase							:  Union[str, Any] 			=   key
       for block in encrypted_blocks:
              decrypted_blocks.append(pow(SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__       )       )
       return get_text_from_blocks(SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__       )







def 		_snake_case(						SCREAMING_SNAKE_CASE__       )				->					tuple[int, int, int]:
       with open(SCREAMING_SNAKE_CASE__       ) as fo:
              lowercase							:  int 			=   fo.read()
       lowercase							:  int 			=   content.split(""","""       )
       return (int(SCREAMING_SNAKE_CASE__       ), int(SCREAMING_SNAKE_CASE__       ), int(SCREAMING_SNAKE_CASE__       ))







def 		_snake_case(						SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__ = DEFAULT_BLOCK_SIZE      ,			)				->					str:
       lowercase							:  Union[str, Any] 			=   read_key_file(SCREAMING_SNAKE_CASE__       )
       if key_size < block_size * 8:
              sys.exit(
                  """ERROR: Block size is {} bits and key size is {} bits. The RSA cipher """
                  """requires the block size to be equal to or greater than the key size. """
                  """Either decrease the block size or use different keys.""".format(
                      block_size * 8      ,			SCREAMING_SNAKE_CASE__       )       )

       lowercase							:  int 			=   [str(SCREAMING_SNAKE_CASE__       ) for i in encrypt_message(SCREAMING_SNAKE_CASE__      ,			(n, e)      ,			SCREAMING_SNAKE_CASE__       )]

       lowercase							:  Any 			=   """,""".join(SCREAMING_SNAKE_CASE__       )
       lowercase							:  List[str] 			=   f"{len(SCREAMING_SNAKE_CASE__       )}_{block_size}_{encrypted_content}"
       with open(SCREAMING_SNAKE_CASE__      ,			"""w"""       ) as fo:
              fo.write(SCREAMING_SNAKE_CASE__       )
       return encrypted_content







def 		_snake_case(						SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__       )				->					str:
       lowercase							:  str 			=   read_key_file(SCREAMING_SNAKE_CASE__       )
       with open(SCREAMING_SNAKE_CASE__       ) as fo:
              lowercase							:  Tuple 			=   fo.read()
       lowercase							:  List[Any] 			=   content.split("""_"""       )
       lowercase							:  Optional[Any] 			=   int(SCREAMING_SNAKE_CASE__       )
       lowercase							:  Optional[int] 			=   int(SCREAMING_SNAKE_CASE__       )

       if key_size < block_size * 8:
              sys.exit(
                  """ERROR: Block size is {} bits and key size is {} bits. The RSA cipher """
                  """requires the block size to be equal to or greater than the key size. """
                  """Did you specify the correct key file and encrypted file?""".format(
                      block_size * 8      ,			SCREAMING_SNAKE_CASE__       )       )

       lowercase							:  Union[str, Any] 			=   []
       for block in encrypted_message.split(""","""       ):
              encrypted_blocks.append(int(SCREAMING_SNAKE_CASE__       )       )

       return decrypt_message(SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__      ,			(n, d)      ,			SCREAMING_SNAKE_CASE__       )







def 		_snake_case(						)				->					None:
       lowercase							:  Union[str, Any] 			=   """encrypted_file.txt"""
       lowercase							:  Any 			=   input(R"""Encrypt\Decrypt [e\d]: """       )

       if response.lower().startswith("""e"""       ):
              lowercase							:  str 			=   """encrypt"""
       elif response.lower().startswith("""d"""       ):
              lowercase							:  str 			=   """decrypt"""

       if mode == "encrypt":
              if not os.path.exists("""rsa_pubkey.txt"""       ):
                     rkg.make_key_files("""rsa"""      ,			1_024       )

              lowercase							:  List[str] 			=   input("""\nEnter message: """       )
              lowercase							:  Any 			=   """rsa_pubkey.txt"""
              print(f"Encrypting and writing to {filename}..."       )
              lowercase							:  Tuple 			=   encrypt_and_write_to_file(SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__       )

              print("""\nEncrypted text:"""       )
              print(SCREAMING_SNAKE_CASE__       )

       elif mode == "decrypt":
              lowercase							:  str 			=   """rsa_privkey.txt"""
              print(f"Reading from {filename} and decrypting..."       )
              lowercase							:  Optional[int] 			=   read_from_file_and_decrypt(SCREAMING_SNAKE_CASE__      ,			SCREAMING_SNAKE_CASE__       )
              print("""writing decryption to rsa_decryption.txt..."""       )
              with open("""rsa_decryption.txt"""      ,			"""w"""       ) as dec:
                     dec.write(SCREAMING_SNAKE_CASE__       )

              print("""\nDecryption:"""       )
              print(SCREAMING_SNAKE_CASE__       )


if __name__ == "__main__":
  main()




from __future__ import annotations







def 		_snake_case(						SCREAMING_SNAKE_CASE__       )				->					bool:
       lowercase							:  int
       lowercase							:  list[str] 			=   list(SCREAMING_SNAKE_CASE__       )
       lowercase			,    lowercase							:  Union[str, Any] 			=   _vector[:-1], int(_vector[-1]       )
       lowercase							:  list[int] 			=   [int(SCREAMING_SNAKE_CASE__       ) for digit in __vector]

       vector.reverse()
       for i, digit in enumerate(SCREAMING_SNAKE_CASE__       ):
              if i & 1 == 0:
                     lowercase							:  int 			=   digit * 2
                     if doubled > 9:
                            doubled -= 9
                     check_digit += doubled
              else:
                     check_digit += digit

       return check_digit % 10 == 0


if __name__ == "__main__":
  import doctest

  doctest.testmod()
  assert is_luhn("""79927398713""")
  assert not is_luhn("""79927398714""")
