def encryptor(entire_msg, key):
K1, K2 = toy_des.key_getter(key)
# see, I'm going to operate under the assumption that entire_msg is already in bits
# so I don't need to do text_to_bits
# turning bits to bits because it'll convert easier lollllllll
bits_of_bits = toy_des.text_to_bits(entire_msg)
block_list = []
block = ""
for i in range(0, len(bits_of_bits), 8):
for j in range(i, i + 8):
if j == len(bits_of_bits):
break
block += bits_of_bits[j]
block_list.append(block)
block = ""
encrypt_list = []
encrypt_string = ""
for i in range(len(block_list)):
encrypt_list.append(toy_des.encryptor(block_list[i], K1, K2))
for i in range(len(encrypt_list)):
encrypt_string += toy_des.text_from_bits(encrypt_list[i])
return encrypt_string
def decryptor(entire_msg, key):
K1, K2 = toy_des.key_getter(key)
decrypt_list = []
encrypt_bits = toy_des.text_to_bits(entire_msg)
block = ""
for i in range(0, len(encrypt_bits), 8):
for j in range(i, i + 8):
block += encrypt_bits[j]
decrypt_list.append(block)
block = ""
decrypt_bits = []
for i in range(len(decrypt_list)):
decrypt_bits.append(toy_des.decryptor(decrypt_list[i], K1, K2))
block = ""
for i in range(len(decrypt_bits)):
block += toy_des.text_from_bits(decrypt_bits[i])
return block
# encrypt the file to send upon a connection
# code from toy_des.py
secret_bin = toy_des.text_to_bits(entire_message)
block_list = []
block = ""
# print(len(secret_bin))
for i in range(0, len(secret_bin), 8):
for j in range(i, i + 8):
if j == len(secret_bin):
break
block += secret_bin[j]
block_list.append(block)
block = ""
Key1, Key2 = toy_des.key_getter(key)
encrypt_list = []
encrypt_string = ""
for i in range(len(block_list)):
encrypt_list.append(toy_des.encryptor(block_list[i], Key1, Key2))
for i in range(len(encrypt_list)):
encrypt_string += toy_des.text_from_bits(encrypt_list[i])
# want to send the encrypted string
# listen for incoming connections
sock.listen(1)
while True:
try: # this will just keep sending the encrypted message
connection, cli_addr = sock.accept()
import toy_des
import sys
if __name__ == "__main__":
# users will connect to the server,
# get an encrypted message, and decrypts it
if len(sys.argv) != 3 or len(sys.argv[2]) != 10:
print("usage: client.py \"<insert filename here>\" <10-bit key here>")
# the filename is going to be the ouput file
file = sys.argv[1]
key = sys.argv[2]
K1, K2 = toy_des.key_getter(key)
f = open(file, "w+")
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
serv_addr = ('localhost', 9095)
sock.connect(serv_addr)
while True:
encrypted = sock.recv(1024).decode()
print("Received the message:", encrypted)
# this is pretty much the same code from toy_des.
# it's just the decryption process