



'''simple docstring'''


lowercase_      :				List[str]   					=    '''ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'''







def      SCREAMING_SNAKE_CASE				(				lowercase_    :      bytes						):
						# Make sure the supplied data is a bytes-like object
						if not isinstance(lowercase_ ,  lowercase_						):
												lowercase        =							F"""a bytes-like object is required, not '{data.__class__.__name__}'"""
												raise TypeError(lowercase_						)

						lowercase        =							"""""".join(bin(lowercase_						)[2:].zfill(8						) for byte in data						)

						lowercase        =							len(lowercase_						) % 6 != 0

						if padding_needed:
												# The padding that will be added later
												lowercase        =							B"""=""" * ((6 - len(lowercase_						) % 6) // 2)

												# Append binary_stream with arbitrary binary digits (0's by default) to make its
												# length a multiple of 6.
												binary_stream += "0" * (6 - len(lowercase_						) % 6)
						else:
												lowercase        =							B""""""

						# Encode every 6 binary digits to their corresponding Base64 character
						return (
						    "".join(
						        B64_CHARSET[int(binary_stream[index : index + 6] ,  2						)]
						        for index in range(0 ,  len(lowercase_						) ,  6						)						).encode()
						    + padding
						)







def      SCREAMING_SNAKE_CASE				(				lowercase_    :      str						):
						# Make sure encoded_data is either a string or a bytes-like object
						if not isinstance(lowercase_ ,  lowercase_						) and not isinstance(lowercase_ ,  lowercase_						):
												lowercase        =							(
												    """argument should be a bytes-like object or ASCII string, """
												    F"""not '{encoded_data.__class__.__name__}'"""
												)
												raise TypeError(lowercase_						)

						# In case encoded_data is a bytes-like object, make sure it contains only
						# ASCII characters so we convert it to a string object
						if isinstance(lowercase_ ,  lowercase_						):
												try:
																		lowercase        =							encoded_data.decode("""utf-8"""						)
												except UnicodeDecodeError:
																		raise ValueError("""base64 encoded data should only contain ASCII characters"""						)

						lowercase        =							encoded_data.count("""="""						)

						# Check if the encoded string contains non base64 characters
						if padding:
												assert all(
												    char in B64_CHARSET for char in encoded_data[:-padding]						), "Invalid base64 character(s) found."
						else:
												assert all(
												    char in B64_CHARSET for char in encoded_data						), "Invalid base64 character(s) found."

						# Check the padding
						assert len(lowercase_						) % 4 == 0 and padding < 3, "Incorrect padding"

						if padding:
												# Remove padding if there is one
												lowercase        =							encoded_data[:-padding]

												lowercase        =							"""""".join(
												    bin(B64_CHARSET.index(lowercase_						)						)[2:].zfill(6						) for char in encoded_data						)[: -padding * 2]
						else:
												lowercase        =							"""""".join(
												    bin(B64_CHARSET.index(lowercase_						)						)[2:].zfill(6						) for char in encoded_data						)

						lowercase        =							[
						    int(binary_stream[index : index + 8] ,  2						)
						    for index in range(0 ,  len(lowercase_						) ,  8						)
						]

						return bytes(lowercase_						)


if __name__ == "__main__":
						import doctest

						doctest.testmod()







'''simple docstring'''


def      SCREAMING_SNAKE_CASE				(				lowercase_    :      Union[str, Any] ,  lowercase_    :      str						):
						lowercase        =							""""""
						for i in table:
												res += inp[i - 1]
						return res







def      SCREAMING_SNAKE_CASE				(				lowercase_    :      List[Any]						):
						return data[1:] + data[0]







def      SCREAMING_SNAKE_CASE				(				lowercase_    :      Tuple ,  lowercase_    :      Dict						):
						lowercase        =							""""""
						for i in range(len(lowercase_						)						):
												if a[i] == b[i]:
																		res += "0"
												else:
																		res += "1"
						return res







def      SCREAMING_SNAKE_CASE				(				lowercase_    :      str ,  lowercase_    :      str						):
						lowercase        =							int("""0b""" + data[0] + data[-1] ,  2						)
						lowercase        =							int("""0b""" + data[1:3] ,  2						)
						return bin(s[row][col]						)[2:]







def      SCREAMING_SNAKE_CASE				(				lowercase_    :      Dict ,  lowercase_    :      Tuple ,  lowercase_    :      Tuple ,  lowercase_    :      str ,  lowercase_    :      Any						):
						lowercase        =							message[:4]
						lowercase        =							message[4:]
						lowercase        =							apply_table(lowercase_ ,  lowercase_						)
						lowercase        =							xor(lowercase_ ,  lowercase_						)
						lowercase        =							apply_sbox(lowercase_ ,  temp[:4]						)  # noqa: E741
						lowercase        =							apply_sbox(lowercase_ ,  temp[4:]						)
						lowercase        =							"""0""" * (2 - len(lowercase_						)) + l  # noqa: E741
						lowercase        =							"""0""" * (2 - len(lowercase_						)) + r
						lowercase        =							apply_table(l + r ,  lowercase_						)
						lowercase        =							xor(lowercase_ ,  lowercase_						)
						return temp + right


if __name__ == "__main__":
						lowercase_      :				Tuple   					=    input('''Enter 10 bit key: ''')
						lowercase_      :				Any   					=    input('''Enter 8 bit message: ''')

						lowercase_      :				Dict   					=    [6, 3, 7, 4, 8, 5, 10, 9]
						lowercase_      :				str   					=    [3, 5, 2, 7, 4, 10, 1, 9, 8, 6]
						lowercase_      :				List[Any]   					=    [2, 4, 3, 1]
						lowercase_      :				List[str]   					=    [2, 6, 3, 1, 4, 8, 5, 7]
						lowercase_      :				Tuple   					=    [4, 1, 3, 5, 7, 2, 8, 6]
						lowercase_      :				Optional[Any]   					=    [4, 1, 2, 3, 2, 3, 4, 1]
						lowercase_      :				List[str]   					=    [[1, 0, 3, 2], [3, 2, 1, 0], [0, 2, 1, 3], [3, 1, 3, 2]]
						lowercase_      :				List[Any]   					=    [[0, 1, 2, 3], [2, 0, 1, 3], [3, 0, 1, 0], [2, 1, 0, 3]]

						# key generation
						lowercase_      :				Union[str, Any]   					=    apply_table(key, paa_table)
						lowercase_      :				Optional[Any]   					=    temp[:5]
						lowercase_      :				int   					=    temp[5:]
						lowercase_      :				List[str]   					=    left_shift(left)
						lowercase_      :				int   					=    left_shift(right)
						lowercase_      :				Tuple   					=    apply_table(left + right, pa_table)
						lowercase_      :				List[str]   					=    left_shift(left)
						lowercase_      :				Optional[Any]   					=    left_shift(right)
						lowercase_      :				Union[str, Any]   					=    left_shift(left)
						lowercase_      :				Union[str, Any]   					=    left_shift(right)
						lowercase_      :				Optional[int]   					=    apply_table(left + right, pa_table)

						# encryption
						lowercase_      :				int   					=    apply_table(message, IP)
						lowercase_      :				Dict   					=    function(expansion, sa, sa, keya, temp)
						lowercase_      :				Any   					=    temp[4:] + temp[:4]
						lowercase_      :				List[Any]   					=    function(expansion, sa, sa, keya, temp)
						lowercase_      :				Tuple   					=    apply_table(temp, IP_inv)
						print('''Cipher text is:''', CT)

						# decryption
						lowercase_      :				List[str]   					=    apply_table(CT, IP)
						lowercase_      :				Optional[int]   					=    function(expansion, sa, sa, keya, temp)
						lowercase_      :				Optional[Any]   					=    temp[4:] + temp[:4]
						lowercase_      :				Optional[int]   					=    function(expansion, sa, sa, keya, temp)
						lowercase_      :				Optional[Any]   					=    apply_table(temp, IP_inv)
						print('''Plain text after decypting is:''', PT)


