

import os
import sys

from . import rsa_key_generator as rkg

_UpperCamelCase			      =		128
_UpperCamelCase			      =		256







def 		_lowercase			(					lowercase__       ,     lowercase__ = DEFAULT_BLOCK_SIZE						):
      __lowerCAmelCase :						Optional[int] = message.encode('''ascii'''						)

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







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







def 		_lowercase			(					lowercase__       ,     lowercase__       ,     lowercase__ = DEFAULT_BLOCK_SIZE						):
      __lowerCAmelCase :						Union[str, Any] = []
      __lowerCAmelCase,							__lowerCAmelCase :						List[str] = key

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







def 		_lowercase			(					lowercase__       ,     lowercase__       ,     lowercase__       ,     lowercase__ = DEFAULT_BLOCK_SIZE       ,     ):
      __lowerCAmelCase :						str = []
      __lowerCAmelCase,							__lowerCAmelCase :						str = key
      for block in encrypted_blocks:
            decrypted_blocks.append(pow(lowercase__       ,     lowercase__       ,     lowercase__						)						)
      return get_text_from_blocks(lowercase__       ,     lowercase__       ,     lowercase__						)







def 		_lowercase			(					lowercase__						):
      with open(lowercase__						) as fo:
            __lowerCAmelCase :						Optional[Any] = fo.read()
      __lowerCAmelCase,							__lowerCAmelCase,							__lowerCAmelCase :						Tuple = content.split(''','''						)
      return (int(lowercase__						), int(lowercase__						), int(lowercase__						))







def 		_lowercase			(					lowercase__       ,     lowercase__       ,     lowercase__       ,     lowercase__ = DEFAULT_BLOCK_SIZE       ,     ):
      __lowerCAmelCase,							__lowerCAmelCase,							__lowerCAmelCase :						List[str] = read_key_file(lowercase__						)
      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       ,     lowercase__						)						)

      __lowerCAmelCase :						List[str] = [str(lowercase__						) for i in encrypt_message(lowercase__       ,     (n, e)       ,     lowercase__						)]

      __lowerCAmelCase :						List[str] = ''','''.join(lowercase__						)
      __lowerCAmelCase :						Optional[int] = f"""{len(lowercase__						)}_{block_size}_{encrypted_content}"""
      with open(lowercase__       ,     '''w'''						) as fo:
            fo.write(lowercase__						)
      return encrypted_content







def 		_lowercase			(					lowercase__       ,     lowercase__						):
      __lowerCAmelCase,							__lowerCAmelCase,							__lowerCAmelCase :						Union[str, Any] = read_key_file(lowercase__						)
      with open(lowercase__						) as fo:
            __lowerCAmelCase :						Union[str, Any] = fo.read()
      __lowerCAmelCase,							__lowerCAmelCase,							__lowerCAmelCase :						int = content.split('''_'''						)
      __lowerCAmelCase :						List[Any] = int(lowercase__						)
      __lowerCAmelCase :						Union[str, Any] = int(lowercase__						)

      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       ,     lowercase__						)						)

      __lowerCAmelCase :						Optional[Any] = []
      for block in encrypted_message.split(''','''						):
            encrypted_blocks.append(int(lowercase__						)						)

      return decrypt_message(lowercase__       ,     lowercase__       ,     (n, d)       ,     lowercase__						)







def 		_lowercase			(					):
      __lowerCAmelCase :						Tuple = '''encrypted_file.txt'''
      __lowerCAmelCase :						Union[str, Any] = input(r'''Encrypt\Decrypt [e\d]: '''						)

      if response.lower().startswith('''e'''						):
            __lowerCAmelCase :						List[str] = '''encrypt'''
      elif response.lower().startswith('''d'''						):
            __lowerCAmelCase :						Optional[int] = '''decrypt'''

      if mode == "encrypt":
            if not os.path.exists('''rsa_pubkey.txt'''						):
                  rkg.make_key_files('''rsa'''       ,     1_0_2_4						)

            __lowerCAmelCase :						int = input('''\nEnter message: '''						)
            __lowerCAmelCase :						Dict = '''rsa_pubkey.txt'''
            print(f"""Encrypting and writing to {filename}..."""						)
            __lowerCAmelCase :						int = encrypt_and_write_to_file(lowercase__       ,     lowercase__       ,     lowercase__						)

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

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

            print('''\nDecryption:'''						)
            print(lowercase__						)


if __name__ == "__main__":
 main()





def 		_lowercase			(					lowercase__						):
      return "".join(chr(ord(lowercase__						) + 3_2						) if '''A''' <= char <= '''Z''' else char for char in word						)


if __name__ == "__main__":
 from doctest import testmod

 testmod()


