
import os
import sys

from . import rsa_key_generator as rkg

__lowerCAmelCase      :					List[str]   	=       128
__lowerCAmelCase      :					Optional[int]   	=       256

def a__   (	UpperCAmelCase__,					UpperCAmelCase__ = DEFAULT_BLOCK_SIZE ):






  '''simple docstring'''





  __magic_name__    					=	message.encode("""ascii""" )

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

def a__   (	UpperCAmelCase__,					UpperCAmelCase__,					UpperCAmelCase__ = DEFAULT_BLOCK_SIZE ):






  '''simple docstring'''





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

def a__   (	UpperCAmelCase__,					UpperCAmelCase__,					UpperCAmelCase__ = DEFAULT_BLOCK_SIZE ):






  '''simple docstring'''





  __magic_name__    					=	[]
  __magic_name__					,   __magic_name__    					=	key

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

def a__   (	UpperCAmelCase__,					UpperCAmelCase__,					UpperCAmelCase__,					UpperCAmelCase__ = DEFAULT_BLOCK_SIZE,					):






  '''simple docstring'''





  __magic_name__    					=	[]
  __magic_name__					,   __magic_name__    					=	key
  for block in encrypted_blocks:
    decrypted_blocks.append(pow(A_,					A_,					A_ ) )
  return get_text_from_blocks(A_,					A_,					A_ )

def a__   (	UpperCAmelCase__ ):






  '''simple docstring'''





  with open(A_ ) as fo:
    __magic_name__    					=	fo.read()
  __magic_name__					,   __magic_name__					,   __magic_name__    					=	content.split(""",""" )
  return (int(A_ ), int(A_ ), int(A_ ))

def a__   (	UpperCAmelCase__,					UpperCAmelCase__,					UpperCAmelCase__,					UpperCAmelCase__ = DEFAULT_BLOCK_SIZE,					):






  '''simple docstring'''





  __magic_name__					,   __magic_name__					,   __magic_name__    					=	read_key_file(A_ )
  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,					A_ ) )

  __magic_name__    					=	[str(A_ ) for i in encrypt_message(A_,					(n, e),					A_ )]

  __magic_name__    					=	""",""".join(A_ )
  __magic_name__    					=	f'''{len(A_ )}_{block_size}_{encrypted_content}'''
  with open(A_,					"""w""" ) as fo:
    fo.write(A_ )
  return encrypted_content

def a__   (	UpperCAmelCase__,					UpperCAmelCase__ ):






  '''simple docstring'''





  __magic_name__					,   __magic_name__					,   __magic_name__    					=	read_key_file(A_ )
  with open(A_ ) as fo:
    __magic_name__    					=	fo.read()
  __magic_name__					,   __magic_name__					,   __magic_name__    					=	content.split("""_""" )
  __magic_name__    					=	int(A_ )
  __magic_name__    					=	int(A_ )

  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,					A_ ) )

  __magic_name__    					=	[]
  for block in encrypted_message.split(""",""" ):
    encrypted_blocks.append(int(A_ ) )

  return decrypt_message(A_,					A_,					(n, d),					A_ )

def a__   (	):






  '''simple docstring'''





  __magic_name__    					=	"""encrypted_file.txt"""
  __magic_name__    					=	input(R"""Encrypt\Decrypt [e\d]: """ )

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

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

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

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

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

    print("""\nDecryption:""" )
    print(A_ )


if __name__ == "__main__":
    main()



from itertools import compress, repeat
from math import ceil, sqrt

def a__   (	A_ ):






  '''simple docstring'''





  if num <= 2:
    return []
  if num == 3:
    return [2]

  # Odd sieve for numbers in range [3, num - 1]
  __magic_name__    					=	bytearray(b"""\x01""" ) * ((num >> 1) - 1)

  for i in range(3,					int(sqrt(A_ ) ) + 1,					2 ):
    if sieve[(i >> 1) - 1]:
      __magic_name__    					=	i**2
      __magic_name__    					=	repeat(
          0,					ceil((num - i_squared) / (i << 1) ) )

  return [2] + list(compress(range(3,					A_,					2 ),					A_ ) )


if __name__ == "__main__":
    import doctest

    doctest.testmod()

