



import os
import sys

from . import rsa_key_generator as rkg

__A       =1_2_8
__A       =2_5_6

def 			a		( _UpperCAmelCase				:   Dict					,  _UpperCAmelCase				:   List[str] = DEFAULT_BLOCK_SIZE		):







		'''simple docstring'''





		__UpperCAmelCase       :	List[str]						=      message.encode('''ascii'''		)

		__UpperCAmelCase       :	Any						=      []
		for block_start in range(0					,  len(_UpperCAmelCase		)					,  _UpperCAmelCase		):
				__UpperCAmelCase       :	Any						=      0
				for i in range(_UpperCAmelCase					,  min(block_start + block_size					,  len(_UpperCAmelCase		)		)		):
						block_int += message_bytes[i] * (BYTE_SIZE ** (i % block_size))
				block_ints.append(_UpperCAmelCase		)
		return block_ints

def 			a		( _UpperCAmelCase				:   Tuple					,  _UpperCAmelCase				:   str					,  _UpperCAmelCase				:   Any = DEFAULT_BLOCK_SIZE		):







		'''simple docstring'''





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

def 			a		( _UpperCAmelCase				:   Any					,  _UpperCAmelCase				:   List[str]					,  _UpperCAmelCase				:   Tuple = DEFAULT_BLOCK_SIZE		):







		'''simple docstring'''





		__UpperCAmelCase       :	Optional[int]						=      []
		__UpperCAmelCase				,   __UpperCAmelCase       :	List[str]						=      key

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

def 			a		( _UpperCAmelCase				:   Optional[int]					,  _UpperCAmelCase				:   int					,  _UpperCAmelCase				:   Any					,  _UpperCAmelCase				:   Tuple = DEFAULT_BLOCK_SIZE					,  ):







		'''simple docstring'''





		__UpperCAmelCase       :	Optional[int]						=      []
		__UpperCAmelCase				,   __UpperCAmelCase       :	Any						=      key
		for block in encrypted_blocks:
				decrypted_blocks.append(pow(_UpperCAmelCase					,  _UpperCAmelCase					,  _UpperCAmelCase		)		)
		return get_text_from_blocks(_UpperCAmelCase					,  _UpperCAmelCase					,  _UpperCAmelCase		)

def 			a		( _UpperCAmelCase				:   Optional[int]		):







		'''simple docstring'''





		with open(_UpperCAmelCase		) as fo:
				__UpperCAmelCase       :	str						=      fo.read()
		__UpperCAmelCase				,   __UpperCAmelCase				,   __UpperCAmelCase       :	str						=      content.split(''','''		)
		return (int(_UpperCAmelCase		), int(_UpperCAmelCase		), int(_UpperCAmelCase		))

def 			a		( _UpperCAmelCase				:   int					,  _UpperCAmelCase				:   Union[str, Any]					,  _UpperCAmelCase				:   Union[str, Any]					,  _UpperCAmelCase				:   Dict = DEFAULT_BLOCK_SIZE					,  ):







		'''simple docstring'''





		__UpperCAmelCase				,   __UpperCAmelCase				,   __UpperCAmelCase       :	Tuple						=      read_key_file(_UpperCAmelCase		)
		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					,  _UpperCAmelCase		)		)

		__UpperCAmelCase       :	Dict						=      [str(_UpperCAmelCase		) for i in encrypt_message(_UpperCAmelCase					,  (n, e)					,  _UpperCAmelCase		)]

		__UpperCAmelCase       :	List[str]						=      ''','''.join(_UpperCAmelCase		)
		__UpperCAmelCase       :	str						=      f'{len(_UpperCAmelCase		)}_{block_size}_{encrypted_content}'
		with open(_UpperCAmelCase					,  '''w'''		) as fo:
				fo.write(_UpperCAmelCase		)
		return encrypted_content

def 			a		( _UpperCAmelCase				:   Optional[int]					,  _UpperCAmelCase				:   Tuple		):







		'''simple docstring'''





		__UpperCAmelCase				,   __UpperCAmelCase				,   __UpperCAmelCase       :	List[Any]						=      read_key_file(_UpperCAmelCase		)
		with open(_UpperCAmelCase		) as fo:
				__UpperCAmelCase       :	Tuple						=      fo.read()
		__UpperCAmelCase				,   __UpperCAmelCase				,   __UpperCAmelCase       :	Union[str, Any]						=      content.split('''_'''		)
		__UpperCAmelCase       :	Optional[Any]						=      int(_UpperCAmelCase		)
		__UpperCAmelCase       :	Tuple						=      int(_UpperCAmelCase		)

		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					,  _UpperCAmelCase		)		)

		__UpperCAmelCase       :	List[Any]						=      []
		for block in encrypted_message.split(''','''		):
				encrypted_blocks.append(int(_UpperCAmelCase		)		)

		return decrypt_message(_UpperCAmelCase					,  _UpperCAmelCase					,  (n, d)					,  _UpperCAmelCase		)

def 			a		( ):







		'''simple docstring'''





		__UpperCAmelCase       :	Any						=      '''encrypted_file.txt'''
		__UpperCAmelCase       :	Union[str, Any]						=      input(R'''Encrypt\Decrypt [e\d]: '''		)

		if response.lower().startswith('''e'''		):
				__UpperCAmelCase       :	str						=      '''encrypt'''
		elif response.lower().startswith('''d'''		):
				__UpperCAmelCase       :	Any						=      '''decrypt'''

		if mode == "encrypt":
				if not os.path.exists('''rsa_pubkey.txt'''		):
						rkg.make_key_files('''rsa'''					,  10_24		)

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

				print('''\nEncrypted text:'''		)
				print(_UpperCAmelCase		)

		elif mode == "decrypt":
				__UpperCAmelCase       :	str						=      '''rsa_privkey.txt'''
				print(f'Reading from {filename} and decrypting...'		)
				__UpperCAmelCase       :	Union[str, Any]						=      read_from_file_and_decrypt(_UpperCAmelCase					,  _UpperCAmelCase		)
				print('''writing decryption to rsa_decryption.txt...'''		)
				with open('''rsa_decryption.txt'''					,  '''w'''		) as dec:
						dec.write(_UpperCAmelCase		)

				print('''\nDecryption:'''		)
				print(_UpperCAmelCase		)


if __name__ == "__main__":
				main()









def 			__lowerCAmelCase       (SCREAMING_SNAKE_CASE   )->    list:




      """simple docstring"""

      snake_case_			= [True for i in range(n + 1   )]
      snake_case_			= [i - 1 for i in range(n + 1   )]
      snake_case_			= []
      for i in range(2   ,   n + 1   ):
            if is_prime[i]:
                  primes.append(SCREAMING_SNAKE_CASE   )
            for j in range(0   ,   len(SCREAMING_SNAKE_CASE   )   ):
                  if i * primes[j] >= n:
                        break
                  snake_case_			= False

                  if i % primes[j] == 0:
                        snake_case_			= totients[i] * primes[j]
                        break

                  snake_case_			= totients[i] * (primes[j] - 1)

      return totients


if __name__ == "__main__":
   import doctest

   doctest.testmod()