def recvFile(file_name: str, hash_code: str, encoding: str, fromer: str):
mkdir(euser.get())
btext = b''
while True:
data, addr = client_msg.recvfrom(buffer)
btext += data
if btext[-7:] == b"__end__":
break
btext = btext[:-7]
hexstr = binascii.b2a_hex(btext)
filebyte = cryptocommon.hexstr_to_bytelist(hexstr)
hashbytelist = md5hash.hash(filebyte)
while fromer not in certificate_list.keys(): # wait for certificate
askCert(fromer)
time.sleep(0.2)
friend_certificate = certificate_list[fromer]
friend_pbk = friend_certificate["pbk"]
hash_decode = cipher_rsa.numlist_to_decryption_str(hash_code, friend_pbk[0], friend_pbk[1])
hashhexstr = cryptocommon.bytelist_to_hexstr(hashbytelist)
if hashhexstr == hash_decode:
file = open(euser.get() + "\\" + file_name, 'w')
file.write((btext).decode('gb18030'))
file.close()
text.insert(tkinter.INSERT, "you have received a file from "+fromer+"\n")
else:
text.insert(tkinter.INSERT, "received some broken files.\n")
def connectServer():
global ck
ipStr = eip.get()
portStr = eport.get()
userStr = euser.get()
pwd = cryptocommon.bytelist_to_hexstr(md5hash.hash(cryptocommon.asciistr_to_bytelist(epwd.get())))
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
client.connect((ipStr, int(portStr))) #
client.send((userStr + pwd).encode())
data = client.recv(1024).decode()
print(data)
if data == "error":
messagebox.showerror("ERROR", "Wrong account or password, please try again.")
raise Exception
except Exception:
return
ck = client
t1 = threading.Thread(target=tcp_msg)
t1.start()
t2 = threading.Thread(target=udp_msg)
t2.start()
t3 = threading.Thread(target=resend_certificate)
t3.start()
chatRoom()
def sendFile():
friend_certificate = certificate_list[comboxlist_friend.get()]
friend_address = tuple(friend_certificate["address"])
file_path = filedialog.askopenfilename()
file = open(file_path, 'rb')
stext = file.read()
hexstr = binascii.b2a_hex(stext)
filebyte = cryptocommon.hexstr_to_bytelist(hexstr)
hashbytelist = md5hash.hash(filebyte)
hashhexstr = cryptocommon.bytelist_to_hexstr(hashbytelist)
hashhexstr = cipher_rsa.str_encryption(hashhexstr, pvk[0], pvk[1]) # signature
file_name = file_path.split("/")[-1]
stream = {"type": "file", "name": file_name, "hash": hashhexstr, "encoding": chardet.detect(stext)["encoding"],
"sender": euser.get()}
client_msg.sendto(json.dumps(stream).encode(), friend_address)
time.sleep(0.8)
stext += b"__end__"
epoch = len(stext) // buffer
res = int(len(stext) - epoch * buffer)
print("sending file::::")
t = 0
for i in range(epoch):
t = i
time.sleep(0.1)
client_msg.sendto(stext[i * buffer: (i + 1) * buffer], friend_address)
if res != 0:
client_msg.sendto(stext[t * buffer:t * buffer + res], friend_address)
def main():
message = "FF00CA9634"
msgbytelist = cryptocommon.hexstr_to_bytelist(message)
hashbytelist = md5hash.hash(msgbytelist, printdebug=True)
hashhexstr = cryptocommon.bytelist_to_hexstr(hashbytelist)
print('Message string (hex): {}'.format(message))
print("Message bytelist: {}".format(msgbytelist))
print("Hash bytelist: {}".format(hashbytelist))
print("MD5 hash (hex): {}".format(hashhexstr))
print("")
print("-" * 100)
print("")
message = "the quick brown fox"
msgbytelist = cryptocommon.asciistr_to_bytelist(message)
hashbytelist = sha256hash.hash(msgbytelist, printdebug=True)
hashhexstr = cryptocommon.bytelist_to_hexstr(hashbytelist)
print('Message string: "{}"'.format(message))
print("Message bytelist: {}".format(msgbytelist))
print("Hash bytelist: {}".format(hashbytelist))
print("SHA-256 hash (hex): {}".format(hashhexstr))
def main():
message = "FF00CA9634"
msgbytelist = cryptocommon.hexstr_to_bytelist(message)
hashbytelist = md5hash.hash(msgbytelist, printdebug=True)
hashhexstr = cryptocommon.bytelist_to_hexstr(hashbytelist)
print(f"Message string (hex): {message}")
print(f"Message bytelist: {msgbytelist}")
print(f"Hash bytelist: {hashbytelist}")
print(f"MD5 hash (hex): {hashhexstr}")
print()
print("-" * 100)
print()
message = "the quick brown fox"
msgbytelist = cryptocommon.asciistr_to_bytelist(message)
hashbytelist = sha256hash.hash(msgbytelist, printdebug=True)
hashhexstr = cryptocommon.bytelist_to_hexstr(hashbytelist)
print(f'Message string: "{message}"')
print(f"Message bytelist: {msgbytelist}")
print(f"Hash bytelist: {hashbytelist}")
print(f"SHA-256 hash (hex): {hashhexstr}")
def main():
message = "FF00CA9634"
msgbytelist = cryptocommon.hexstr_to_bytelist(message)
hashbytelist = md5hash.hash(msgbytelist, printdebug=True)
hashhexstr = cryptocommon.bytelist_to_hexstr(hashbytelist)
print('Message string (hex): {}'.format(message))
print("Message bytelist: {}".format(msgbytelist))
print("Hash bytelist: {}".format(hashbytelist))
print("MD5 hash (hex): {}".format(hashhexstr))
print("")
print("-" * 100)
print("")
message = "the quick brown fox"
msgbytelist = cryptocommon.asciistr_to_bytelist(message)
hashbytelist = sha256hash.hash(msgbytelist, printdebug=True)
hashhexstr = cryptocommon.bytelist_to_hexstr(hashbytelist)
print('Message string: "{}"'.format(message))
print("Message bytelist: {}".format(msgbytelist))
print("Hash bytelist: {}".format(hashbytelist))
print("SHA-256 hash (hex): {}".format(hashhexstr))
def main():
message = "3243F6A8885A308D313198A2E0370734"
key = "2B7E151628AED2A6ABF7158809CF4F3C"
plaintextbytelist = cryptocommon.hexstr_to_bytelist(message)
keybytelist = cryptocommon.hexstr_to_bytelist(key)
ciphertextbytelist = aescipher.encrypt(plaintextbytelist, keybytelist, printdebug=True)
ciphertexthexstr = cryptocommon.bytelist_to_hexstr(ciphertextbytelist)
assert aescipher.decrypt(ciphertextbytelist, keybytelist) == plaintextbytelist
print('Plaintext (hex): {}'.format(message))
print('Ciphertext (hex): {}'.format(ciphertexthexstr))
print('Key (hex): {}'.format(key))
print("Plaintext (bytelist): {}".format(plaintextbytelist))
print("Ciphertext (bytelist): {}".format(ciphertextbytelist))
print("Key (bytelist): {}".format(keybytelist))
0x4E0811A1,
0xF7537E82,
0xBD3AF235,
0x2AD7D2BB,
0xEB86D391,
]
_ROTATION_AMOUNTS = [
7,
12,
17,
22,
5,
9,
14,
20,
4,
11,
16,
23,
6,
10,
15,
21,
]
if __name__ == "__main__":
print(
cryptocommon.bytelist_to_hexstr(
hash(cryptocommon.asciistr_to_bytelist("111"))))
