




"""simple docstring"""





import os
import sys

from . import rsa_key_generator as rkg

_lowercase		 =      1_28
_lowercase		 =      2_56



def 						lowerCAmelCase							(	lowerCamelCase ,     lowerCamelCase = DEFAULT_BLOCK_SIZE						):
						'''simple docstring'''


						snake_case__    :   Optional[int]							     =   message.encode('''ascii'''						)

						snake_case__    :   List[Any]							     =   []
						for block_start in range(0 ,     len(lowerCamelCase						) ,     lowerCamelCase						):
												snake_case__    :   Union[str, 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						):
						'''simple docstring'''


						snake_case__    :   list[str]							     =   []
						for block_int in block_ints:
												snake_case__    :   list[str]							     =   []
												for i in range(block_size - 1 ,     -1 ,     -1						):
																		if len(lowerCamelCase						) + i < message_length:
																								snake_case__    :   Any							     =   block_int // (BYTE_SIZE**i)
																								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						):
						'''simple docstring'''


						snake_case__    :   Any							     =   []
						snake_case__    :   str							     =   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 ,     ):
						'''simple docstring'''


						snake_case__    :   List[str]							     =   []
						snake_case__    :   Tuple							     =   key
						for block in encrypted_blocks:
												decrypted_blocks.append(pow(lowerCamelCase ,     lowerCamelCase ,     lowerCamelCase						)						)
						return get_text_from_blocks(lowerCamelCase ,     lowerCamelCase ,     lowerCamelCase						)



def 						lowerCAmelCase							(	lowerCamelCase						):
						'''simple docstring'''


						with open(lowerCamelCase						) as fo:
												snake_case__    :   Dict							     =   fo.read()
						snake_case__    :   List[Any]							     =   content.split(''','''						)
						return (int(lowerCamelCase						), int(lowerCamelCase						), int(lowerCamelCase						))



def 						lowerCAmelCase							(	lowerCamelCase ,     lowerCamelCase ,     lowerCamelCase ,     lowerCamelCase = DEFAULT_BLOCK_SIZE ,     ):
						'''simple docstring'''


						snake_case__    :   List[str]							     =   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						)						)

						snake_case__    :   Any							     =   [str(lowerCamelCase						) for i in encrypt_message(lowerCamelCase ,     (n, e) ,     lowerCamelCase						)]

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



def 						lowerCAmelCase							(	lowerCamelCase ,     lowerCamelCase						):
						'''simple docstring'''


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

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

						return decrypt_message(lowerCamelCase ,     lowerCamelCase ,     (n, d) ,     lowerCamelCase						)



def 						lowerCAmelCase							(	):
						'''simple docstring'''


						snake_case__    :   str							     =   """encrypted_file.txt"""
						snake_case__    :   List[Any]							     =   input(R'''Encrypt\Decrypt [e\d]: '''						)

						if response.lower().startswith('''e'''						):
												snake_case__    :   Union[str, Any]							     =   """encrypt"""
						elif response.lower().startswith('''d'''						):
												snake_case__    :   List[Any]							     =   """decrypt"""

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

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

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

						elif mode == "decrypt":
												snake_case__    :   Union[str, Any]							     =   """rsa_privkey.txt"""
												print(f'''Reading from {filename} and decrypting...'''						)
												snake_case__    :   Dict							     =   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()








"""simple docstring"""





from __future__ import annotations

import math
import random

def 						lowerCAmelCase							(	lowerCamelCase ,     lowerCamelCase ,     lowerCamelCase						):
						'''simple docstring'''


						snake_case__    :   Tuple							     =   d * e - 1
						snake_case__    :   Optional[int]							     =   0
						snake_case__    :   Tuple							     =   0
						while p == 0:
												snake_case__    :   Optional[int]							     =   random.randint(2 ,     n - 1						)
												snake_case__    :   Tuple							     =   k
												while True:
																		if t % 2 == 0:
																								snake_case__    :   List[Any]							     =   t // 2
																								snake_case__    :   Union[str, Any]							     =   (g**t) % n
																								snake_case__    :   Dict							     =   math.gcd(x - 1 ,     lowerCamelCase						)
																								if x > 1 and y > 1:
																														snake_case__    :   Union[str, Any]							     =   y
																														snake_case__    :   str							     =   n // y
																														break  # find the correct factors
																		else:
																								break  # t is not divisible by 2, break and choose another g
						return sorted([p, q]						)


if __name__ == "__main__":
							import doctest

							doctest.testmod()


