
import os
import sys

from . import rsa_key_generator as rkg

SCREAMING_SNAKE_CASE__				=							128
SCREAMING_SNAKE_CASE__				=							256




def 				__SCREAMING_SNAKE_CASE  (						SCREAMING_SNAKE_CASE			: Union[str, Any]       ,				SCREAMING_SNAKE_CASE			: Optional[Any] = DEFAULT_BLOCK_SIZE     )	->		list[int]:
				__lowercase								=   message.encode('ascii'     )

				__lowercase								=   []
				for block_start in range(0       ,				len(SCREAMING_SNAKE_CASE     )       ,				SCREAMING_SNAKE_CASE     ):
								__lowercase								=   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 				__SCREAMING_SNAKE_CASE  (						SCREAMING_SNAKE_CASE			: Optional[int]       ,				SCREAMING_SNAKE_CASE			: Tuple       ,				SCREAMING_SNAKE_CASE			: Optional[Any] = DEFAULT_BLOCK_SIZE     )	->		str:
				__lowercase								=   []
				for block_int in block_ints:
								__lowercase								=   []
								for i in range(block_size - 1       ,				-1       ,				-1     ):
												if len(SCREAMING_SNAKE_CASE     ) + i < message_length:
																__lowercase								=   block_int // (BYTE_SIZE**i)
																__lowercase								=   block_int % (BYTE_SIZE**i)
																block_message.insert(0       ,				chr(SCREAMING_SNAKE_CASE     )     )
								message.extend(SCREAMING_SNAKE_CASE     )
				return "".join(SCREAMING_SNAKE_CASE     )




def 				__SCREAMING_SNAKE_CASE  (						SCREAMING_SNAKE_CASE			: Tuple       ,				SCREAMING_SNAKE_CASE			: Optional[Any]       ,				SCREAMING_SNAKE_CASE			: int = DEFAULT_BLOCK_SIZE     )	->		list[int]:
				__lowercase								=   []
				__lowercase						,   __lowercase								=   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 				__SCREAMING_SNAKE_CASE  (						SCREAMING_SNAKE_CASE			: Union[str, Any]       ,				SCREAMING_SNAKE_CASE			: Optional[Any]       ,				SCREAMING_SNAKE_CASE			: str       ,				SCREAMING_SNAKE_CASE			: Any = DEFAULT_BLOCK_SIZE       ,				)	->		str:
				__lowercase								=   []
				__lowercase						,   __lowercase								=   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 				__SCREAMING_SNAKE_CASE  (						SCREAMING_SNAKE_CASE			: List[str]     )	->		tuple[int, int, int]:
				with open(SCREAMING_SNAKE_CASE     ) as fo:
								__lowercase								=   fo.read()
				__lowercase						,   __lowercase						,   __lowercase								=   content.split(','     )
				return (int(SCREAMING_SNAKE_CASE     ), int(SCREAMING_SNAKE_CASE     ), int(SCREAMING_SNAKE_CASE     ))




def 				__SCREAMING_SNAKE_CASE  (						SCREAMING_SNAKE_CASE			: Union[str, Any]       ,				SCREAMING_SNAKE_CASE			: Tuple       ,				SCREAMING_SNAKE_CASE			: Union[str, Any]       ,				SCREAMING_SNAKE_CASE			: Tuple = DEFAULT_BLOCK_SIZE       ,				)	->		str:
				__lowercase						,   __lowercase						,   __lowercase								=   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								=   [str(SCREAMING_SNAKE_CASE     ) for i in encrypt_message(SCREAMING_SNAKE_CASE       ,				(n, e)       ,				SCREAMING_SNAKE_CASE     )]

				__lowercase								=   ','.join(SCREAMING_SNAKE_CASE     )
				__lowercase								=   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 				__SCREAMING_SNAKE_CASE  (						SCREAMING_SNAKE_CASE			: int       ,				SCREAMING_SNAKE_CASE			: Any     )	->		str:
				__lowercase						,   __lowercase						,   __lowercase								=   read_key_file(SCREAMING_SNAKE_CASE     )
				with open(SCREAMING_SNAKE_CASE     ) as fo:
								__lowercase								=   fo.read()
				__lowercase						,   __lowercase						,   __lowercase								=   content.split('_'     )
				__lowercase								=   int(SCREAMING_SNAKE_CASE     )
				__lowercase								=   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								=   []
				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 				__SCREAMING_SNAKE_CASE  (						)	->		None:
				__lowercase								=   'encrypted_file.txt'
				__lowercase								=   input(R'Encrypt\Decrypt [e\d]: '     )

				if response.lower().startswith('e'     ):
								__lowercase								=   'encrypt'
				elif response.lower().startswith('d'     ):
								__lowercase								=   'decrypt'

				if mode == "encrypt":
								if not os.path.exists('rsa_pubkey.txt'     ):
												rkg.make_key_files('rsa'       ,				1024     )

								__lowercase								=   input('\nEnter message: '     )
								__lowercase								=   'rsa_pubkey.txt'
								print(F"""Encrypting and writing to {filename}..."""     )
								__lowercase								=   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								=   'rsa_privkey.txt'
								print(F"""Reading from {filename} and decrypting..."""     )
								__lowercase								=   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()






"""simple docstring"""


from math import factorial







def    UpperCAmelCase       (						UpperCAmelCase		,   UpperCAmelCase   )							-> List[str]:
     return factorial(UpperCAmelCase   ) / (factorial(UpperCAmelCase   ) * factorial(n - r   ))







def    UpperCAmelCase       (						)							-> Optional[Any]:
     snake_case_   			=   0

     for i in range(1		,   101   ):
          for j in range(1		,   i + 1   ):
               if combinations(UpperCAmelCase		,   UpperCAmelCase   ) > 1e6:
                    total += 1
     return total


if __name__ == "__main__":
    print(solution())

