def validate_ticket(data):
data_dict = json.loads(data)
ticket = DES.decrypt(IOTKEY[:8], base64.b64decode(data_dict["ticket"]))
ticket_dict = json.loads(ticket)
try:
sessionkey = base64.b64decode(ticket_dict["sessionkey"])
authenticator = json.loads(
DES.decrypt(sessionkey[16:24],
base64.b64decode(data_dict["authenticator"])).decode())
except:
return None
timestamp = datetime.strptime(authenticator["timestamp"],
'%Y-%m-%d %H:%M:%S.%f')
lifetime = datetime.strptime(ticket_dict["lifetime"],
'%Y-%m-%d %H:%M:%S.%f')
if authenticator["logout"] == "True":
authenticator_set.clear()
print("authenticator_list:\n", authenticator_set)
return "Successfully logged out from IoT.", "logout"
if datetime.now() > lifetime:
authenticator_set.clear()
return "expired"
if authenticator["username"] != ticket_dict["username"]:
return None
if data_dict["server"] != ticket_dict["server"]:
return None
if (authenticator["username"], timestamp) in authenticator_set:
return None
authenticator_set.add((authenticator["username"], timestamp))
print("authenticator_list:\n", authenticator_set)
return data_dict["command"]
def tgs_server(auth):
info = {
'tgt':
auth['tgt'],
'auth':
DES.encrypt(
str({
'c': __client,
'time': datetime.datetime.now().timestamp()
}), auth['key']),
'id':
__target
}
print('\n\tRequest to TGS_server:')
print(info)
res_encr = TGS_server(info)
print('\n\tTGS_server encrypted response:')
print(res_encr)
res = DES.decrypt(res_encr, auth['key'])
print('\n\tTGS_server decrypted response:')
print(res)
return eval(res)
def getResults(self, key, rounds, data, array):
"""
Iterate through many random permutations of
masking and conduct DES for certain number of rounds
Adds to list of results if similar.
"""
counter_without_result = 0
results = {}
while True:
if counter_without_result > 2**17:
break
curr_len = len(results)
num1, num2 = self._get_xor_hex(array, results)
hex_value = num1 + num2
new_data = self.bitwise_xor(data, hex_value)
des_ = DES(key, new_data, self.rounds, self.mode)
new_rounds = des_._encrypt()
results = self.check_similarity(results, rounds, new_rounds,
hex_value)
if len(results) > curr_len:
counter_without_result = 0
else:
counter_without_result += 1
return results
def ss_server(tgs_ans):
time = datetime.datetime.now().timestamp()
info = {
'tgs': tgs_ans['tgs'],
'auth': DES.encrypt(str({
'c': __client,
'time': time
}), tgs_ans['key'])
}
print('\n\tRequest to SS_server:')
print(info)
res_encr = SS_server(info)
print('\n\tSS_server encrypted response:')
print(res_encr)
res = eval(DES.decrypt(res_encr, tgs_ans['key']))
print('\n\tSS_server decrypted response:')
print(res)
if abs(res - time - 1) > 1e-6:
raise ValueError("Not connected")
print('\n\nOK. Connected')
def TGS_server(info: dict):
tgt_encr = info['tgt']
auth_encr = info['auth']
service_id = info['id']
tgt = DES.decrypt(tgt_encr, database.K_as_tgs)
tgt = eval(tgt)
k_c_tgs = tgt['key']
auth = DES.decrypt(auth_encr, tgt['key'])
auth = eval(auth)
if auth['c'] != tgt['c']:
raise ValueError('client id not equal')
if auth['time'] - tgt['time'] > tgt['period']:
raise ValueError('ticket is not valid')
k_tgs_ss = database.keys[(service_id, database.tgs_id)]
k_c_ss = database.keys[tuple(sorted((service_id, auth['c'])))]
tgs = {
'c': auth['c'],
'ss': service_id,
'time': datetime.now().timestamp(),
'period': 1000,
'key': k_c_ss
}
res = {
'tgs': DES.encrypt(str(tgs), k_tgs_ss),
'key': k_c_ss
}
return DES.encrypt(str(res), k_c_tgs)
def generate_session(username, password, servername, network_address):
global i
i += 1
key = hash.generate_session() # key for the session
dateTimeObj = datetime.now() # gets the current timestamp
timestampStr = dateTimeObj.strftime(
"%Y-%m-%d %H:%M:%S.%f") # converts the timestamp to a readable format
life = str(dateTimeObj +
timedelta(hours=1)) # lifetime for the generated ticket
print(i, timestampStr)
# Create the ticket with correct parameters and encrypt it using DES
ticket = '{{"username":"******","server":"{}","network":"{}","sessionkey":"{}","timestamp":"{}","lifetime":"{}"}}'.format(
username, servername, network_address, key, timestampStr, life)
print(i, ticket)
eTicket = DES.encrypt(IOTKEY[:8], ticket)
eticket_str = base64.b64encode(eTicket).decode("utf-8")
payload = '{{"sessionkey":"{}","timestamp":"{}","lifetime":"{}","ticket":"{}"}}'.format(
key, timestampStr, life, eticket_str)
# # Encrypt the client's key using DES
client_key = base64.b64decode(password)
cipher = DES.encrypt(client_key[48:56], payload)
# Add a salt to the password hash and return the packet
salt = base64.b64encode(client_key[:32]).decode("utf-8")
return_packet = '{{"salt":"{}","payload":"{}"}}'.format(
salt,
base64.b64encode(cipher).decode("utf-8"))
return return_packet.encode()
def Des(str, key, mode):
if mode == 0: #加密
text = str
length = len(text)
if length % 4 > 0:
text = text + (4 - (length % 4)) * " "
length = len(text)
finalRes = ""
for i in range(int(length / 4)):
tempText = [text[j] for j in range(i * 4, i * 4 + 4)]
finalRes = finalRes + DES.Des(tempText, key)
#print(finalRes)
return finalRes
elif mode == 1: #解密
text = str
length = len(text)
finalRes = ""
for i in range(int(length / 16)):
tempText = text[i * 16:i * 16 + 16]
finalRes = finalRes + DES.DeDes(tempText, key)
#print(finalRes)
return finalRes
else: #错误调用
return None
def encrypt(file, save_as, schema, base_path):
if schema == 'AES':
pickle_in = open(base_path + 'en-de/aes.p', 'rb')
passwd = pickle.load(pickle_in)
pickle_in.close()
AES.encrypt_AES(file, passwd, save_as)
elif schema == 'RSA':
RSA.encrypt_RSA(file, save_as, base_path)
elif schema == 'DES':
pickle_in = open(base_path + 'en-de/des.p', 'rb')
passwd = pickle.load(pickle_in)
pickle_in.close()
DES.encrypt_DES(file, passwd, save_as)
elif schema == 'BF':
pickle_in = open(base_path + 'en-de/bf.p', 'rb')
#print(base_path)
passwd = pickle.load(pickle_in)
pickle_in.close()
bf.encrypt_bf(file, passwd, save_as)
else:
print('pending')
sys.exit(2)
def generate_session(username, password, servername, network_address):
global i
i += 1
key = hash.generate_session()
dateTimeObj = datetime.now()
timestampStr = dateTimeObj.strftime("%Y-%m-%d %H:%M:%S.%f")
life = str(dateTimeObj + timedelta(hours=1))
print(i, timestampStr)
ticket = '{{"username":"******","server":"{}","network":"{}","sessionkey":"{}","timestamp":"{}","lifetime":"{}"}}'.format(
username, servername, network_address, key, timestampStr, life)
print(i, ticket)
eTicket = DES.encrypt(IOTKEY[:8], ticket)
eticket_str = base64.b64encode(eTicket).decode("utf-8")
payload = '{{"sessionkey":"{}","timestamp":"{}","lifetime":"{}","ticket":"{}"}}'.format(
key, timestampStr, life, eticket_str)
client_key = base64.b64decode(password)
cipher = DES.encrypt(client_key[48:56], payload)
salt = base64.b64encode(client_key[:32]).decode("utf-8")
return_packet = '{{"salt":"{}","payload":"{}"}}'.format(
salt,
base64.b64encode(cipher).decode("utf-8"))
return return_packet.encode()
def main():
des = DES()
Des_IV = "Passw0rd"
encode = des.encrypt("Passw0rd", Des_IV, str("Hello World!"))
encode2 = des.decrypt("Passw0rd", Des_IV,
str("53c8927a4dd1e9b6f44c9d53af92c794"))
print(encode)
print(encode2)
def test_transformation():
#round1
rd = 1
c = '1111000011001100101010100000'
d = '1010101011001100111100000000'
expect = '000010110000001001100111100110110100100110100101'
result, c1, d1 = DES.transformation(PC2_table, rd, 'left', c, d)
assert expect == result, 'transformation PC2 failed'
assert DES.rotate(rd, c) == c1, 'transformation rotation failed'
assert DES.rotate(rd, d) == d1, 'transformation rotation failed'
def e_callback():
checkshortkey()
try:
if cipherSelect.get() == 1:
(fin, fout) = getfiles()
print(fin, fout)
DES.DES_encrypt_file(fin, key1.get(), fout)
if cipherSelect.get() == 2:
(fin, fout) = getfiles()
DES.DES3_encrypt_file(fin, key1.get(), key2.get(), key3.get(),
fout)
if cipherSelect.get() == 3:
(fin, fout) = getfiles()
DES.DESX_encrypt_file(fin, key1.get(), key2.get(), key3.get(),
fout)
if cipherSelect.get() == 4:
if data_type.get() == 2:
(fin, fout) = gettxtfiles()
r = readtxtfile(fin)
try:
k = int(key1.get())
except ValueError:
messagebox.showerror(
"Error", "Require integer key for ceasar cipher")
#add alert
e = ceasar.ceasar_encrypt(r, k)
writetxtfile(fout, e)
else:
plaintext = T_plaintext.get("1.0", END)
try:
k = int(key1.get())
except ValueError:
messagebox.showerror(
"Error", "Require integer key for ceasar cipher")
#add alert
e = ceasar.ceasar_encrypt(plaintext, k)
T_e_text.delete("1.0", END)
T_e_text.insert("1.0", e)
if cipherSelect.get() == 5:
if data_type.get() == 2:
(fin, fout) = gettxtfiles()
r = readtxtfile(fin)
e = playfair.encrypt_playfiar(r, key1.get())
writetxtfile(fout, e)
else:
plaintext = T_plaintext.get("1.0", END)
#add alert
e = playfair.encrypt_playfiar(plaintext, key1.get())
T_e_text.delete("1.0", END)
T_e_text.insert("1.0", e)
except:
messagebox.showerror("Error", "Encryption failed")
else:
messagebox.showinfo("Info", "Encryption Successful")
def test_DES_decrypt():
key = '0123456789ABCDEF'
cipher = 'e7ab74f51fb2e8a4'
expect = '789ab123456789aa'
result = DES.DES_decrypt(cipher, key)
assert expect == result, 'DES decrypt failed'
key = '789ABCDEF0123456'
cipher = '64b8696dfcbdda2f'
expect = '45ab1a89678923a7'
result = DES.DES_decrypt(cipher, key)
assert expect == result, 'DES encrypt failed'
def check(l,message,cipher): l1=[] print(cipher) print(len(message)) print(len(cipher)) for a,b in l: m1=des.DES(message,a,"Dec") m2=des.DES(m1,b,"Dec") print(m2) if m2 ==cipher: l1.append((a,b)) return l1
def test_DES_encrypt():
key = '0123456789ABCDEF'
msg = '789AB123456789AA'
expect = 'e7ab74f51fb2e8a4'
result = DES.DES_encrypt(msg, key)
assert expect == result, 'DES encrypt failed'
key = '789ABCDEF0123456'
msg = '45AB1A89678923A7'
expect = '64b8696dfcbdda2f'
result = DES.DES_encrypt(msg, key)
assert expect == result, 'DES encrypt failed'
def GenData():
DES.KeyProNGen()
one_time_key = DES.info['key']
print('One time key is : ' + one_time_key + '\n')
f = open('data.txt', 'w')
for PT in PlainTextList:
DES.info['PlainText'] = PT
f.write(PT)
f.write("\n")
DES.Encrypt()
f.write(DES.info['CipherText'])
f.write("\n")
f.close()
def RuntimeTest(self):
data = self.testData.strip().split('\n')
for i in range(len(data)):
start = time()
des = DES()
key = '0001001100110100010101110111100110011011101111001101111111110001'
des.SetKey(key)
des.EncryptKey()
des.SetInputText(data[i])
des.SetCipherText(des.Encrypt())
desResult = des.Decrypt()
stop = time()
self.runtime += ('DES runtime:' + str(stop - start) + "s\n")
start = time()
rsa = RSA()
rsa.KeyGeneration(128)
rsaResult = rsa.Decryption(
rsa.Encryption(int(data[i]), rsa.keyPublic, rsa.n),
rsa.keyPrivate, rsa.n)
stop = time()
self.runtime += ('RSA runtime:' + str(stop - start) + "s\n\n")
return self.runtime
def main():
TCP_IP = '127.0.0.1'
SERV_PORT = 5005
BOB_PORT = 5004
ALICE_PORT = 5003
BUFFER_SIZE = 4096
#connect to KDC to establish aliceKey
servSock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
servSock.connect((TCP_IP, SERV_PORT))
#clients are aware of each others' usernames
alice = "Alice"
bob = "Bob"
servSock.send(alice.encode("utf-8"))
aliceKey = diffieHellman(servSock, False)
aliceNonce = generate_nonce()
namePrint(alice, "aliceKey established with server as " + str(aliceKey))
#connect to Bob to start exchanging information
bobSock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
bobSock.connect((TCP_IP, BOB_PORT))
#1. Alice sends a request to Bob
namePrint(alice, "step 1: request to Bob")
msg = [alice]
sendMessage(bobSock, msg)
#3. Alice sends a message to the server identifying herself and Bob, telling the server she wants to communicate with Bob.
namePrint(alice, "step 3: request to Server")
encryptedMsg = receiveMessage(bobSock)
msg = [alice, bob, aliceNonce, encryptedMsg]
sendMessage(servSock, msg)
#5. Alice forwards the key to Bob who can decrypt it with the key he shares with the server, thus authenticating the data.
namePrint(alice, "step 5: pass Server response to Bob")
encryptedNewMsg = receiveMessage(servSock)
decryptedServerMsg = DES.frombits(DES.decrypt(encryptedNewMsg, aliceKey))
serverMsg = decoder.decode(decryptedServerMsg)
aliceKab = serverMsg[2]
toBob = serverMsg[3]
sendMessage(bobSock, toBob)
#7. Alice performs a simple operation on the nonce, re-encrypts it and sends it back verifying that she is still alive and that she holds the key.
namePrint(alice, "step 7: send nonce operation result to Bob")
encryptedNewMsg = receiveMessage(bobSock)
decryptedBobMsg = DES.frombits(DES.decrypt(encryptedNewMsg, aliceKab))
decryptedBob = decoder.decode(decryptedBobMsg)
newMsg = [nonceSubtract(decryptedBob[0])]
encryptedNewMsg = DES.encrypt(DES.tobits(encoder.encode(newMsg)), aliceKab)
sendMessage(bobSock, encryptedNewMsg)
#time too chat!
namePrint(alice, "Success! Time to chat!")
threading.Thread(target=chatDataHandler,
args=(bobSock, bob, aliceKab)).start()
while (True):
sendMessage(
bobSock,
DES.encrypt(DES.tobits(encoder.encode(input(""))), aliceKab))
def test_rotate():
shift_nums = [1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1]
whole_key = '11110000110011001010101000001010101011001100111100000000'
left_key = whole_key[:28]
right_key = whole_key[28:]
print('left', left_key)
#round 1 Rotation in encryption (left shift by 1)
result = DES.rotate(shift_nums[0], left_key)
expect = '1110000110011001010101000001'
assert expect == result, 'encryption - round1 rotation failed'
#round 3 Rotation in encryption(left shift by 2)
result = DES.rotate(shift_nums[2], left_key)
expect = '1100001100110010101010000011'
assert expect == result, 'encryption - round3 rotation failed'
def Test2():
Message = '\nA very very very very long text message to be encrypted!' * 10
print('Text Message: ', Message)
Key = 'Some Random Secret Key'
msg = DES.check_msg(Message)
K = DES.check_key(Key)
print('Encrypted Text:', end=' ')
cipher = DES.encryption(K, msg)
print(cipher)
print('Decrypted Text:', end=' ')
Message = DES.decryption(K, cipher)
print(Message)
def main():
my_des = DES.Des()
user_dialog = User_Dialog.UserDialog()
# encrypt_decrypt = user_dialog.encrypt_or_decrypt()
message = user_dialog.get_input_message(1)
key = user_dialog.get_input_key()
# where_print_result = user_dialog.where_result()
encrypt_decrypt = user_dialog.DECRYPT
# message = "D:\Project\Python\des\Messages\Chiffrement_DES_de_Orelsan.txt"
# key = "D:\Project\Python\des\Messages\Clef_de_Orelsan.txt"
# message = "je sais pas trop mais je test des trucs plutot interessant ahah"
# key = "0100110010101110110111001010110111000100011010001100100000101010"
where_print_result = user_dialog.CONSOLE
if encrypt_decrypt == user_dialog.ENCRYPT:
message = my_des.encrypt(message, key)
elif encrypt_decrypt == user_dialog.DECRYPT:
message = my_des.decrypt(message, key)
if where_print_result == user_dialog.CONSOLE:
print(message)
elif encrypt_decrypt == user_dialog.FILE:
open("result.txt", "w").write(message)
print(
"Le fichier résultat 'result.txt' a été enregistré à la racine du projet."
)
def f1(key_in_hex, text_in_bin):
key = key_in_hex
hash = MD5.new()
message = text_in_bin.encode('utf-8')
hash.update(message)
hash_md5 = hash.hexdigest()
### hash_md5 be like 3c1898a00cc4579728e1268191a64bc6
hash_bin = bin(int(hash_md5, 16))[2:].zfill(128)
### hash_bin be like 00111100000110001001100010100000000011001...., type = str
first_half = int(hash_bin[:64], 2)
second_half = int(hash_bin[64:], 2)
inner_des = DES.encrypt_DES(key, hex(first_half)[2:]) ### hex value
final_input = int(inner_des, 16) ^ second_half
result = DES.encrypt_DES(key, hex(final_input)[2:])
return int(result, 16)
def encryptData(text, private_key, peer_public):
# des encrypt message
key = DES.generatekey()
text = DES.modifytext(text)
d = DES.des()
desEndata = d.encrypt(key, text)
print desEndata
desEndata = "".join(str(e) for e in desEndata)
# hash message and signiture
hashAndSign = RSA.encrypt(md5(text), private_key)
# encrypted des key and signed message with the other client public_key
middleData = key + '/' + hashAndSign
data2 = RSA.encrypt(middleData, peer_public)
#combine data2 and desEndata
data = desEndata + '/' + data2
return data
def Test1():
# plain text message. 64-bit.
Msg = '0123456789ABCDEF'
M = DES.hexToBinary(Msg)
# Key. 64-bit.
Key = 'FEDCBA9876543210'
K = DES.hexToBinary(Key)
print('Text Message: ', Msg)
cipher = DES.DES_Encryption_Decryption(K, M, DES.ENCRYPT)
print('Encrypted Text:', cipher)
C = DES.hexToBinary(cipher)
plain = DES.DES_Encryption_Decryption(K, C, DES.DECRYPT)
print('Decrypted Text:', plain)
def encrypt():
print("--------------------加密过程开始--------------------")
print("--------------------MD5加密开始--------------------")
mess=input("请输入想加密的消息(默认为hello):") or "hello"
origin=mess
md5Tmp=md5.md5hash(mess)
print(f"明文长度为: {origin.__len__()}\n输入的明文的MD5值为: {md5Tmp}")
print("--------------------MD5加密结束--------------------\n")
print("--------------------RSA加密开始--------------------")
p = int(input("输入RSA密码算法的p值(必须为素数,默认值为47):") or "47")
q = int(input("输入RSA密码算法的q值(必须为素数且不能与上面的值相同，默认值为463):") or "463")
ListOut = RSA.generate_key_pair(p,q)
encrypted = RSA.encrypt(ListOut[0],ListOut[1], md5Tmp)
encrypted_msg=' '.join(map(lambda x: str(x), encrypted))
print(f"RSA公钥为: ({ListOut[0]},{ListOut[1]})\nRSA私钥的key值为: {ListOut[2]}\nRSA私钥的n值为: {ListOut[1]}\nRSA密文为:\n{encrypted_msg}\n")
print("--------------------RSA加密结束--------------------\n")
print("--------------------DES加密开始--------------------")
combine=origin+encrypted_msg
noPairKey=input("输入您的DES密钥(默认值为hello123，必须为8个):") or "hello123"
desObject=DES.des()
finalOut=desObject.encrypt(noPairKey,combine,padding=True)
f=open("encrypted.txt","wb")
f.write(bytes(finalOut,'utf-8'))
f.close()
print(f"DES明文为:\n{combine}\nDES密文为:\n{finalOut}\n密文已编码后写入encrypted.txt文件中")
print("--------------------DES加密结束--------------------")
print("--------------------加密过程结束--------------------\n")
def run(messageFile, keyFile):
try:
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind((UDP_LOCAL_ADDR, UDP_PORT))
message = getPayload(fileName=messageFile)
if len(message) > 250:
print("Max file size is 250 bytes. Program now exiting.")
exit()
key = getKeys(keyFile=keyFile)
keyRev = reverseKey(key=key)
encryptedData = DES(keySet=key, data=message)
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
t = sock.sendto(encryptedData, (UDP_IP_Server, UDP_PORT_SERVER))
dataTemp = post(sock=sock)
data = DES(keySet=keyRev, data=dataTemp)
if data:
tempData = data.decode("utf-8")
if ord(tempData[-1]) == 0:
tempData = tempData[0:-1]
trueData = ast.literal_eval(tempData)
messages = ""
x = len(trueData)
if x > 5:
print("Data Length Wrong. Program Now exiting")
exit()
for entry in trueData:
messages = ("\n{})\n{}".format(x, entry)) + messages
x -= 1
print(messages)
except Exception as e:
print(
"Something as comprised the socket connecting or data.\nError: {}\nTraceBack: {}"
.format(e, traceback.format_exc()))
def main(self):
permutations = 2**25
array = []
for i in range(permutations):
if str(bin(i)).count('1') < 4:
array.append(i)
print(array[:10])
num_results = 0
while True:
key, data = self.generate()
des = DES(key, data, self.rounds, self.mode)
rounds = des._encrypt()
results = self.getResults(key, rounds, data, array)
sim_results = self.getXORSimiarlity(results)
if len(sim_results) != 0:
with open("S5DESTriples" + data, 'a') \
as file_out:
for i in range(len(sim_results)):
if i % 2 == 0:
num_results += 1
print("S5DES:" + str(num_results))
initial_ = key + "\t" + self.mode + '\t' \
+ data[:8] + '\t' + data[8:] + '\t'
line_w_tabs = "\t".join(rounds) + '\n'
file_out.write(initial_)
file_out.write(line_w_tabs)
initial_ = key + "\t" + self.mode + '\t' \
+ sim_results[i][0][:8] + '\t'\
+ sim_results[i][0][8:] + '\t'
line_w_tabs = "\t".join(sim_results[i][1]) + '\n'
file_out.write(initial_)
file_out.write(line_w_tabs)
end_time = time.time()
self.timearray.append(end_time - self.start)
def mac(m, k):
#given message and key, create a mac code
#go through m in 8 bit blocks
i = 0
j = 8
d = m[i:j]
#encrypt block
#IV= 0 so there is no need to xor with IV, answer will be the same
o = DES.encrypt(d, k)
while j != len(m):
i = i + 8
j = j + 8
#xor previosly encrypted block w plaintext
d = DES.xor(o, m[i:j])
#encrypt newly xord block
o = DES.encrypt(d, k)
return o
def runEncryption(inputList):
encryptedBinary = []
newDES = DES.toyDES()
for string in inputList:
encryptedBinary.append( newDES.encryptText(string) )
return encryptedBinary
def runDecryption(encryptedList):
decryptedBinary = []
newDES = DES.toyDES()
for string in encryptedList:
decryptedBinary.append( newDES.decryptText(string) )
return decryptedBinary
import DES
if __name__ == '__main__':
DES.main()
from DES import *
myDES = DES();
plaintext = '0123456789ABCDEF';
key = '133457799BBCDFF1';
ciphertext = myDES.encrypt(plaintext, key)
decrypted = myDES.decrypt(ciphertext,key)
print('##########')
print('key = ' + key )
print('ciphertext = ' + ciphertext)
print('plaintext = ' + plaintext )
print('decrypted = ' + decrypted )
import DES
def write_to_file(filename, data):
with open(filename, 'w') as f:
f.write(data + '\n')
key = DES.gen_bits(64)
des = DES.DES(key=key)
write_to_file('test/KEY.txt', key)
pt_len_list = [56, 64, 120, 128, 800]
for pt_len in pt_len_list:
pt = DES.gen_bits(pt_len)
ct = des.encrypt(pt)
write_to_file('test/PT-%d.txt' % pt_len, pt)
write_to_file('test/CT-%d.txt' % pt_len, ct)
