





import os
import sys

from . import rsa_key_generator as rkg

UpperCamelCase__          =128
UpperCamelCase__          =256






def 			lowerCamelCase__	(__lowerCamelCase,				__lowerCamelCase = DEFAULT_BLOCK_SIZE		):
     _SCREAMING_SNAKE_CASE				:		List[Any]  			=							message.encode("ascii"		)

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






def 			lowerCamelCase__	(__lowerCamelCase,				__lowerCamelCase,				__lowerCamelCase = DEFAULT_BLOCK_SIZE		):
     _SCREAMING_SNAKE_CASE				:		list[str]  			=							[]
     for block_int in block_ints:
          _SCREAMING_SNAKE_CASE				:		list[str]  			=							[]
          for i in range(block_size - 1,				-1,				-1		):
               if len(__lowerCamelCase		) + i < message_length:
                    _SCREAMING_SNAKE_CASE				:		List[str]  			=							block_int // (BYTE_SIZE**i)
                    _SCREAMING_SNAKE_CASE				:		Any  			=							block_int % (BYTE_SIZE**i)
                    block_message.insert(0,				chr(__lowerCamelCase		)		)
          message.extend(__lowerCamelCase		)
     return "".join(__lowerCamelCase		)






def 			lowerCamelCase__	(__lowerCamelCase,				__lowerCamelCase,				__lowerCamelCase = DEFAULT_BLOCK_SIZE		):
     _SCREAMING_SNAKE_CASE				:		str  			=							[]
     _SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE				:		List[Any]  			=							key

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






def 			lowerCamelCase__	(__lowerCamelCase,				__lowerCamelCase,				__lowerCamelCase,				__lowerCamelCase = DEFAULT_BLOCK_SIZE,				):
     _SCREAMING_SNAKE_CASE				:		List[str]  			=							[]
     _SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE				:		str  			=							key
     for block in encrypted_blocks:
          decrypted_blocks.append(pow(__lowerCamelCase,				__lowerCamelCase,				__lowerCamelCase		)		)
     return get_text_from_blocks(__lowerCamelCase,				__lowerCamelCase,				__lowerCamelCase		)






def 			lowerCamelCase__	(__lowerCamelCase		):
     with open(__lowerCamelCase		) as fo:
          _SCREAMING_SNAKE_CASE				:		Optional[int]  			=							fo.read()
     _SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE				:		Optional[int]  			=							content.split(","		)
     return (int(__lowerCamelCase		), int(__lowerCamelCase		), int(__lowerCamelCase		))






def 			lowerCamelCase__	(__lowerCamelCase,				__lowerCamelCase,				__lowerCamelCase,				__lowerCamelCase = DEFAULT_BLOCK_SIZE,				):
     _SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE				:		Dict  			=							read_key_file(__lowerCamelCase		)
     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,				__lowerCamelCase		)		)

     _SCREAMING_SNAKE_CASE				:		Union[str, Any]  			=							[str(__lowerCamelCase		) for i in encrypt_message(__lowerCamelCase,				(n, e),				__lowerCamelCase		)]

     _SCREAMING_SNAKE_CASE				:		Any  			=							",".join(__lowerCamelCase		)
     _SCREAMING_SNAKE_CASE				:		Optional[int]  			=							f"""{len(__lowerCamelCase		)}_{block_size}_{encrypted_content}"""
     with open(__lowerCamelCase,				"w"		) as fo:
          fo.write(__lowerCamelCase		)
     return encrypted_content






def 			lowerCamelCase__	(__lowerCamelCase,				__lowerCamelCase		):
     _SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE				:		Any  			=							read_key_file(__lowerCamelCase		)
     with open(__lowerCamelCase		) as fo:
          _SCREAMING_SNAKE_CASE				:		List[str]  			=							fo.read()
     _SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE			,	_SCREAMING_SNAKE_CASE				:		Union[str, Any]  			=							content.split("_"		)
     _SCREAMING_SNAKE_CASE				:		List[Any]  			=							int(__lowerCamelCase		)
     _SCREAMING_SNAKE_CASE				:		Any  			=							int(__lowerCamelCase		)

     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,				__lowerCamelCase		)		)

     _SCREAMING_SNAKE_CASE				:		Optional[int]  			=							[]
     for block in encrypted_message.split(","		):
          encrypted_blocks.append(int(__lowerCamelCase		)		)

     return decrypt_message(__lowerCamelCase,				__lowerCamelCase,				(n, d),				__lowerCamelCase		)






def 			lowerCamelCase__	():
     _SCREAMING_SNAKE_CASE				:		Tuple  			=							"encrypted_file.txt"
     _SCREAMING_SNAKE_CASE				:		Union[str, Any]  			=							input(R"Encrypt\Decrypt [e\d]: "		)

     if response.lower().startswith("e"		):
          _SCREAMING_SNAKE_CASE				:		List[Any]  			=							"encrypt"
     elif response.lower().startswith("d"		):
          _SCREAMING_SNAKE_CASE				:		Any  			=							"decrypt"

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

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

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

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

          print("\nDecryption:"		)
          print(__lowerCamelCase		)


if __name__ == "__main__":
       main()






from typing import Literal

UpperCamelCase__          ='ABCDEFGHIJKLMNOPQRSTUVWXYZ'






def 			lowerCamelCase__	(__lowerCamelCase,				__lowerCamelCase,				__lowerCamelCase		):
     _SCREAMING_SNAKE_CASE				:		Tuple  			=							LETTERS if mode == "decrypt" else key
     _SCREAMING_SNAKE_CASE				:		Tuple  			=							key if mode == "decrypt" else LETTERS
     _SCREAMING_SNAKE_CASE				:		Dict  			=							""
     # loop through each symbol in the message
     for symbol in message:
          if symbol.upper() in chars_a:
               # encrypt/decrypt the symbol
               _SCREAMING_SNAKE_CASE				:		List[str]  			=							chars_a.find(symbol.upper()		)
               if symbol.isupper():
                    translated += chars_b[sym_index].upper()
               else:
                    translated += chars_b[sym_index].lower()
          else:
               # symbol is not in LETTERS, just add it
               translated += symbol
     return translated






def 			lowerCamelCase__	(__lowerCamelCase,				__lowerCamelCase		):
     return translate_message(__lowerCamelCase,				__lowerCamelCase,				"encrypt"		)






def 			lowerCamelCase__	(__lowerCamelCase,				__lowerCamelCase		):
     return translate_message(__lowerCamelCase,				__lowerCamelCase,				"decrypt"		)






def 			lowerCamelCase__	():
     _SCREAMING_SNAKE_CASE				:		str  			=							"Hello World"
     _SCREAMING_SNAKE_CASE				:		List[str]  			=							"QWERTYUIOPASDFGHJKLZXCVBNM"
     _SCREAMING_SNAKE_CASE				:		Any  			=							"decrypt"  # set to 'encrypt' or 'decrypt'

     if mode == "encrypt":
          _SCREAMING_SNAKE_CASE				:		int  			=							encrypt_message(__lowerCamelCase,				__lowerCamelCase		)
     elif mode == "decrypt":
          _SCREAMING_SNAKE_CASE				:		Optional[int]  			=							decrypt_message(__lowerCamelCase,				__lowerCamelCase		)
     print(f"""Using the key {key}, the {mode}ed message is: {translated}"""		)


if __name__ == "__main__":
       import doctest

       doctest.testmod()
       main()