class MainWindow(QMainWindow, ui.Ui_MainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
p = 33478071698956898786044169848212690817704794983713768568912431388982883793878002287614711652531743087737814467999489
q = 36746043666799590428244633799627952632279158164343087642676032283815739666511279233373417143396810270092798736308917
self.rsa = RSA(p, q)
self.connect(self.button_e, SIGNAL("clicked()"), self.encrypt)
self.connect(self.button_d, SIGNAL("clicked()"), self.decrypt)
#self.connect(self.button_e, SIGNAL("clicked()"), lambda:QMessageBox.information(self,"No",u"浮云"))
def encrypt(self):
message = unicode(self.line_e_m.text()).strip()
if not message:
QMessageBox.critical(self, u"错误", u"请输入明文")
else:
ciphertext = self.rsa.encryptString(message)
self.text_e_c.setPlainText(QString(unicode(ciphertext)))
def decrypt(self):
ciphertext = unicode(self.text_d_c.toPlainText()).strip()
if not ciphertext:
QMessageBox.critical(self, u"错误", u"请输入密文")
else:
try:
message = self.rsa.decrypt(ciphertext)
except:
self.line_d_m.setText(u"无法解密该密文")
else:
self.line_d_m.setText(unicode(message))
def main():
global modN
global keyE
if not len(sys.argv) == 2:
print "Usage: python client.py PORT_NUM"
os._exit(os.EX_OK)
port = int(sys.argv[1])
nthPrime = input("Enter nth prime: ")
mthPrime = input("Enter mth prime: ")
while nthPrime == mthPrime:
print "You cannot use the same number"
mthPrime = input("Enter mth prime: ")
rsa = RSA(nthPrime, mthPrime)
rsa.generateKeys()
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(("localhost", port))
print "Type .bye to exit"
#send keys
publicKeys = str(rsa.publicKeyN) + "#" + str(rsa.publicKeyE)
s.send(publicKeys)
#receive keys
keys = s.recv(2048)
keys = keys.split("#")
modN = int(keys[0])
keyE = int(keys[1])
x = Thread(target=read, args=(s, rsa))
t = Thread(target=write, args=(s, rsa))
x.start()
t.start()
t.join()
s.close()
os._exit(os.EX_OK)
def check_invoice(signed_invoice): """Check if the configparser instance is a signed invoice. If not exit.""" seller_sign_key = os.path.join(os.path.join(tools.DIR_SELLER, tools.FILE_PUB_SIGN)) bank_pukf = os.path.join(tools.DIR_BANK, tools.FILE_PUB_KEY) pub_cp = tools.decode_public_key(seller_sign_key, bank_pukf, tools.ROLE_BANK) tools.check_config(pub_cp, tools.STRCT_PUB_KEY) pub_k = RSA(int(pub_cp[tools.SCT_K_KEY][tools.OPT_K_N]), e=int(pub_cp[tools.SCT_K_KEY][tools.OPT_K_E])) check = pub_k.check_signature(signed_invoice[tools.ROLE_SELLER][tools.OPT_S_SIGN]) tmp = open(tools.TMP_FILE, 'w') tmp.write(check) tmp.close() invoice_cp = ConfigParser() invoice_cp.read(tools.TMP_FILE) os.remove(tools.TMP_FILE) tools.check_config(invoice_cp, tools.STRCT_INVOICE) return invoice_cp
def main():
global modN
global keyE
if len(sys.argv) != 2:
print "Usage: python server.py PORT_NUM"
os._exit(os.EX_OK)
port = int(sys.argv[1])
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(("", port))
s.listen(1)
nthPrime = input("Enter nth prime: ")
mthPrime = input("Enter mth prime: ")
while nthPrime == mthPrime:
print "You cannot use the same number"
mthPrime = input("Enter mth prime: ")
rsa = RSA(nthPrime, mthPrime)
rsa.generateKeys()
print "waiting to accept"
channel, details = s.accept()
print "Type .bye to exit"
#read keys
keys = channel.recv(2048)
keys = keys.split("#")
modN = int(keys[0])
keyE = int(keys[1])
#send keys to client
publicKeys = str(rsa.publicKeyN) + "#" + str(rsa.publicKeyE)
channel.send(publicKeys)
t = Thread(target=read, args=(channel, rsa))
x = Thread(target=write, args=(channel, rsa))
x.start()
t.start()
x.join()
channel.close()
os._exit(os.EX_OK)
class oracle: def __init__(self): self.rsa = RSA() self.pub, self.private = self.rsa.keygen(l=512) def getPubKey(self): return self.pub def isEven(self, num): return ord(self.rsa.decrypt(num, self.private)[-1]) & 1 == 0
def Alice2Bob(newpassword):
if 0 > newpassword or newpassword > maxPW:
raise ValueError("Password must be between 0 and {}".format(maxPW))
rsa = RSA()
rsa.from_message_bit_length(maxPW.bit_length())
#rsa.from_given_pqe(61,53,17,opt=0)
rsa_encrypted_newpassword = rsa.public.encrypt(newpassword)
rsa_decrypted_newpassword = rsa.private.decrypt(rsa_encrypted_newpassword)
print(
"newpassword:"******"\nrsa_encrypted_newpassword:"******"\nrsa_decrypted_newpassword:",rsa_decrypted_newpassword
)
return
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
p = 33478071698956898786044169848212690817704794983713768568912431388982883793878002287614711652531743087737814467999489
q = 36746043666799590428244633799627952632279158164343087642676032283815739666511279233373417143396810270092798736308917
self.rsa = RSA(p, q)
self.connect(self.button_e, SIGNAL("clicked()"), self.encrypt)
self.connect(self.button_d, SIGNAL("clicked()"), self.decrypt)
def gen_invoice(buyer, seller, total):
# Generation of the transaction id
random.seed(os.urandom(SEED_LENGTH))
transac_id = hex(random.getrandbits(TRANSACTION_ID_LENGTH))[2:]
add_invoice_db(transac_id, total)
invoice_cp = ConfigParser()
# Generate the invoice
invoice_cp.add_section(tools.SCT_I_INVOICE)
invoice_cp[tools.SCT_I_INVOICE] = {tools.OPT_I_SELLER: tools.ROLE_SELLER,
tools.OPT_I_BUYER: buyer,
tools.OPT_I_TOTAL: total,
tools.OPT_I_TRANS_ID: transac_id}
invoice_fname = buyer + "_" + transac_id + tools.EXT_INVOICE
invoice_fname = os.path.join(tools.DIR_SELLER, tools.DIR_INVOICE,
invoice_fname)
with open(invoice_fname, 'w') as invoice_file:
invoice_cp.write(invoice_file)
str = ""
invoice = open(invoice_fname, 'r')
invoice_content = invoice.read()
invoice.close()
pri_cp = ConfigParser()
pri_cp.read(os.path.join(tools.DIR_SELLER, tools.FILE_PRI_KEY))
pri_k = RSA(int(pri_cp[tools.SCT_K_KEY][tools.OPT_K_N]),
d=int(pri_cp[tools.SCT_K_KEY][tools.OPT_K_D]))
sign_inv = ConfigParser()
sign_content = pri_k.sign(invoice_content)
sign_inv[tools.ROLE_SELLER] = {tools.OPT_S_SIGN: sign_content}
sign_inv.write(sys.stdout)
def __init__(self, parent=None):
# RSA
self.rsa = RSA()
QtGui.QWidget.__init__(self, parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.ui.btnGenerate.clicked.connect(self.generateKeys)
self.ui.btnEncMessage.clicked.connect(self.createEncryptMsgDialog)
self.ui.btnEncFile.clicked.connect(self.createEncryptFileDialog)
self.generateKeys()
self.ui.textPublicKey_n.textChanged.connect(self.onPublicKeyChanged)
self.ui.textPublicKey_e.textChanged.connect(self.onPublicKeyChanged)
self.ui.textPrivateKey.textChanged.connect(self.onPrivateKeyChanged)
def demonstration():
wire = RSA()
print("\nThis program will now walk you through the encryption process...")
input = raw_input("Please enter a string to encrypt: ")
print("\nYou entered '%s'." % (input))
print("Your public key is: %d" % (wire.publicKey))
print("Your private key is: %d" % (wire.privateKey))
print("Your modulus value is: %d" % (wire.modValue))
raw_input("Press any key to see how encryption works...")
print("\nTo encrypt a string, allow X to equal the ASCII value of a given character. Then use the following formula:")
print("EncryptedASCII = (X ^ PublicKey) % ModulusValue")
print("This results in each character being encrypted as follows:")
encryptedCharacters = wire.encrypt(input)
for i in range(0, len(encryptedCharacters)):
print("\t%s: %d" % (input[i], encryptedCharacters[i]))
raw_input("Press any key to see how decryption works...")
print("\nTo decrypt a string, allow X to equal the encrypted value of a given character. Then use the following formula:")
print("DecryptedASCII = (X ^ PrivateKey) % ModulusValue")
print("\nWhen decrypted, the output should be the same as your initial input!")
print("'%s' is your original string!" % (wire.decrypt(encryptedCharacters)))
class MainDialog(QtGui.QDialog):
def __init__(self, parent=None):
# RSA
self.rsa = RSA()
QtGui.QWidget.__init__(self, parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.ui.btnGenerate.clicked.connect(self.generateKeys)
self.ui.btnEncMessage.clicked.connect(self.createEncryptMsgDialog)
self.ui.btnEncFile.clicked.connect(self.createEncryptFileDialog)
self.generateKeys()
self.ui.textPublicKey_n.textChanged.connect(self.onPublicKeyChanged)
self.ui.textPublicKey_e.textChanged.connect(self.onPublicKeyChanged)
self.ui.textPrivateKey.textChanged.connect(self.onPrivateKeyChanged)
def generateKeys(self):
self.rsa.genKeys()
n,e = self.rsa.getPublicKey()
self.ui.textPublicKey_n.setText(str(n))
self.ui.textPublicKey_e.setText(str(e))
self.ui.textPrivateKey.setText(str(self.rsa.getPrivateKey()))
def createEncryptMsgDialog(self):
encryptDialog = EncryptDialog(self.rsa, self)
encryptDialog.show()
def createEncryptFileDialog(self):
encryptFileDialog = EncryptFileDialog(self.rsa, self)
encryptFileDialog.show()
def onPublicKeyChanged(self):
try:
n = int(self.ui.textPublicKey_n.toPlainText())
e = int(self.ui.textPublicKey_e.toPlainText())
self.rsa.setPublicKey(n, e)
except:
print('Error.')
def onPrivateKeyChanged(self):
try:
d = int(self.ui.textPrivateKey.toPlainText())
self.rsa.setPrivateKey(d)
except:
print('Invalid Key')
cheque_fname = os.path.join(tools.DIR_CUSTOMERS, real_drawer,
tools.DIR_CHQ_ISSUED, cheque_fname)
if os.path.exists(cheque_fname) and os.path.isfile(cheque_fname):
print(ALREADY_PAID, file=sys.stderr)
exit(1)
cheque_cp = ConfigParser()
cheque_cp.add_section(tools.SCT_C_CHEQUE)
cheque_cp.set(tools.SCT_C_CHEQUE, tools.OPT_C_DRAWER, drawer)
cheque_cp.set(tools.SCT_C_CHEQUE, tools.OPT_C_TOTAL, total)
cheque_cp.set(tools.SCT_C_CHEQUE, tools.OPT_C_PAYEE, payee)
cheque_cp.set(tools.SCT_C_CHEQUE, tools.OPT_C_TRANS_ID, transac_id)
with open(cheque_fname,'w') as cheque_f:
cheque_cp.write(cheque_f)
cheque_f = open(cheque_fname, 'r')
cheque_content = cheque_f.read()
pri_cp = ConfigParser()
pri_cp.read(os.path.join(tools.DIR_CUSTOMERS, real_drawer, tools.FILE_PRI_KEY))
pri_k = RSA(int(pri_cp[tools.SCT_K_KEY][tools.OPT_K_N]),
d=int(pri_cp[tools.SCT_K_KEY][tools.OPT_K_D]))
sign = pri_k.sign(cheque_content)
sign_cp = ConfigParser()
sign_cp[real_drawer] = {tools.OPT_S_SIGN: str(sign)}
sign_cp.write(sys.stdout)
#设置变量精度
a = Decimal(0)
b = Decimal(n)
for x in range(limit):
t = (a+b)/2
#如果倍增后的明文是偶数，加倍所述明文未包裹模---模数是素数。这意味着明文是不到一半的模量。
if isEven([i2s(m1)]):
b = t
else:
a = t
m1 = (m1 * m2) % n
return i2s(int(b)).encode('string_escape')
if __name__ == "__main__":
msg = "VGhhdCdzIHdoeSBJIGZvdW5kIHlvdSBkb24ndCBwbGF5IGFyb3VuZCB3aXRoIHRoZSBGdW5reSBDb2xkIE1lZGluYQ=="
myoracle = oracle()
pub = myoracle.getPubKey()
rsa = RSA()
enc = rsa.encrypt(base64.b64decode(msg), pub)
returnmeg = attack(enc, pub, myoracle.isEven)
print returnmeg
def setkey(self, key):
self.key = key
self.cipher = RSA(key)
key.dump()
class InteractiveShell(cmd.Cmd):
intro = '\n type `exit` or `q` to exit (or Ctrl-D in UNIX environment, Ctrl-Z in Windows)\n type `help` or `?` to see usage\n'
prompt = 'RSA > '
def __init__(self):
cmd.Cmd.__init__(self)
self.config = {
"e": '65537'
}
key = RSAKey(bits=1024, e=int(self.config['e']))
print('Default key generated (1024 bits)')
self.setkey(key)
self.last = None
def setkey(self, key):
self.key = key
self.cipher = RSA(key)
key.dump()
def do_q(self, line):
"""
quit
"""
return True
def do_exit(self, line):
"""
quit
"""
return True
def do_EOF(self, line):
"""
quit
"""
return True
def do_set(self, line):
"""
set key val
available key:
e public exponent
"""
try:
key, val = line.split()
except ValueError:
print('error while parsing arguments')
return
if not key:
print('key can not be empty')
return
self.config[key] = val
def do_get(self, key):
"""
get key
available key:
e public exponent
"""
if not key:
print('key can not be empty')
return
print('%s: %r' % (key, self.config.get(key, None)))
def complete_enc(self, *args):
return self.complete_filename(*args)
def do_enc(self, file):
"""
enc [file]
keep file empty to read data form stdin
"""
if not file:
data = input('Data to encrypt:')
else:
try:
data = open(file, 'rb').read()
except:
print('Can not open file %r' % file)
return
c = self.cipher.encrypt_data(data)
self.last = c
print('Source data: %r...' % data[:256])
print('Encrypted: %r...' % enhex(c[:256]))
def complete_dec(self, *args):
return self.complete_filename(*args)
def do_dec(self, file):
"""
dec [file]
keep file empty to read data from stdin
"""
if not file:
data = input('Data to decrypt in hex:')
try:
data = unhex(data)
except:
print('Read input error')
return
else:
try:
data = open(file, 'rb').read()
except:
print('Can not open file %r' % file)
return
t, m = profile(lambda: self.cipher.decrypt_data(data))
self.last = m
print('%g ms used' % (t * 1000))
print('Source data: %r...' % data[:256])
print('Decrypted: %r...' % m[:256])
def do_keygen(self, bits):
"""
keygen [bits=1024]
"""
if not bits: bits = 1024
try:
bits = int(bits)
except:
print('Invalid number')
return
if bits > 2048:
print('You are generating long RSA keypair, it may take some while.')
print('Interrupt by Ctrl-C')
try:
key = RSAKey(bits=bits, e=int(self.config['e']))
self.setkey(key)
except ValueError:
print('Can not generate key')
except KeyboardInterrupt:
print('Canceld')
def do_simplify(self, line):
"""
simplify
strip unnecessary fields of RSAKey.
(this operation will disable CRT decryption optimize)
"""
self.setkey(self.key.simplify())
def do_prime(self, bits):
"""
prime bits
generate a prime with n-bits length
"""
print(prime.randprime_bits(int(bits)))
def do_dump(self, file):
"""
dump [file]
print last result or save last reuslt to file
"""
if not self.last:
print('Nothing in last result')
return
if file:
try:
open(file, 'wb').write(self.last)
except:
print('Can not save file')
else:
print(enhex(self.last) if type(self.last) is Bytes else self.last)
def do_dumpstr(self, line):
"""
dumpstr
print last result as string
"""
if not self.last:
print('Nothing in last result')
return
else:
print(repr(self.last))
def complete_loadkey(self, *args):
return self.complete_filename(*args)
def do_loadkey(self, file):
"""
loadkey [file]
read key from file or read JSON-format key from stdin
"""
if file:
try:
json_data = open(file, 'rb').read()
except:
print('Can not read file')
return
else:
json_data = input('Input JSON-format key:')
try:
key = RSAKey.from_json(json_data)
except Exception as e:
print('Can not load key, Error show below:')
print(e)
return
self.setkey(key)
print('Key loaded')
def complete_filename(self, text, line, begidx, endidx):
arg = line.split()[1:]
if not arg:
completions = os.listdir('./')
else:
dirname, part, base = arg[-1].rpartition('/')
if part == '':
dirname = './'
elif dirname == '':
dirname = '/'
completions = []
for f in os.listdir(dirname):
if f.startswith(base):
if os.path.isfile(os.path.join(dirname,f)):
completions.append(f)
else:
completions.append(f+'/')
return completions
def do_dumpkey(self, file):
"""
dumpkey [file]
dump key to file or stdout
"""
if file:
try:
data = self.key.to_json()
open(file, 'w').write(data)
print('Key dumped to file %s' % file)
except:
print('Can not dump key to file')
else:
print(self.cipher.key.as_dict())
self.key.dump()
def verify(self,msg,sign,key):
pkcs15 = PKCS15()
rsa = RSA()
dgst = hashlib.sha1(message).digest()
return pkcs15.unpad("\x00"+rsa.decrypt(sign,key)) == dgst #把密文sign和key通过解密函数解密出来，然后在填充之后的包里把msg恢复出来对比一下
def chat(self, data):
"""接收聊天信息并打印"""
sender = data['from']
receiver = data['to']
logArea = self.father.logArea
log = ctime() + " Receive Message\n\n"
encryptedMessage = data['encryptedMessage']
encryptedKey = data['encryptedKey']
signature = data['signature']
senderPubKey = data['senderPubKey']
decryptionType = self.father.father.selfInfo['decryptionType']
# message = ''
r = RSA(0)
priKey = self.father.father.selfInfo['priKey']
key = r.decryption(encryptedKey, priKey)
if self.father.father.selfInfo['communicationType'] == 'rsa':
# priKey = self.father.father.selfInfo['priKey']
if len(encryptedMessage) > 5:
result = r.verify(encryptedMessage[0:6], signature,
senderPubKey)
else:
result = r.verify(encryptedMessage, signature,
senderPubKey)
if result:
log += ctime() + " Verify Successfully\n\n"
# father.father.logArea.insert(tk.END)
key = r.decryption(encryptedKey, priKey)
if decryptionType == 'caesar':
c = Caesar()
key = int(key)
message = c.decryption(encryptedMessage, key)
# pass
elif decryptionType == 'playfair':
p = Playfair(0)
p.generateMatrix(key)
message = p.decryption(encryptedMessage)
# pass
elif decryptionType == 'des':
d = des()
message = d.decrypt(key, encryptedMessage)
else:
d = des()
less = data['less']
# print("--------------------",key1, key2, encryptedMessage)
message = d.tdecrypt(key[2:10], key[14:22],
encryptedMessage)
message = message[0:-less]
# print("--------------------",message)
# pass
else:
# 输出不合格
pass
else:
r = RSA(0)
if len(encryptedMessage) > 5:
result = r.verify(encryptedMessage[0:6], signature,
senderPubKey)
else:
result = r.verify(encryptedMessage, signature,
senderPubKey)
if result:
log += ctime() + " Verify Successfully\n\n"
if decryptionType == 'caesar':
key = self.father.father.selfInfo['key']
c = Caesar(key)
ct, secretKey = c.encryption('aaa')
message = c.decryption(encryptedMessage[0],
secretKey)
print('-----------pass')
elif decryptionType == 'playfair':
p = Playfair(0)
p.generateMatrix(key)
message = p.decryption(encryptedMessage)
elif decryptionType == 'des':
d = des()
message = d.decrypt(key, encryptedMessage)
else:
d = des()
less = data['less']
message = d.tdecrypt(key[2:10], key[14:22],
encryptedMessage)
message = message[0:-less]
# pass
else:
print('-----------not pass')
pass
# print("i am here")
textArea = self.father.textArea
text = '['+ sender + ' -> ' + receiver + ' ' + \
ctime() + ']\n\t' + message + '\n'
textArea.insert(tk.END, text)
textArea.see(tk.END)
logArea.insert(tk.END, log)
logArea.see(tk.END)
print("i am here")
def verify(self, msg, sign, key):
pkcs15 = PKCS15()
rsa = RSA()
dgst = hashlib.sha1(message).digest()
return pkcs15.unpad("\x00" + rsa.decrypt(
sign, key)) == dgst #把密文sign和key通过解密函数解密出来，然后在填充之后的包里把msg恢复出来对比一下
def __init__(self): self.rsa = RSA() self.pub, self.private = self.rsa.keygen(l=512)
import requests
from rsa import RSA
import json
key_req = requests.get(
'http://asymcryptwebservice.appspot.com/rsa/serverKey?keySize=256')
n1 = key_req.text
n1 = int(json.loads(n1)['modulus'], 16)
e1 = key_req.text
e1 = int(json.loads(e1)['publicExponent'], 16)
a = RSA(256, 'A')
a.GenerateKeyPair()
a.log += f"Отримані Modulus та publicExponent: n1 = {n1} , e1 ={e1}\n"
while a.o_key[1] > n1:
a = RSA(256, 'A')
a.GenerateKeyPair()
k1, s1 = a.SendKey(e1, n1)
e, n = a.o_key
request = f"http://asymcryptwebservice.appspot.com/rsa/receiveKey?key={hex(k1)[2:]}&signature={hex(s1)[2:]}&modulus={hex(n)[2:]}&publicExponent={hex(e)[2:]}"
a.log += "Перевірка на сайті :\n"
a.log += requests.get(request, cookies=key_req.cookies).text
sendKey = open('sendKey.txt', 'w', encoding="utf8")
sendKey.write(a.log)
class Communicator:
def __init__(self, config, register_agent):
self.HOST = ""
self.config = config
self.register_agent = register_agent
self.connect_spawn_loop = True
self.server_wait = True
self.TIMEOUT = 1
self.SERVER_TIMEOUT = 1
self.THREAD_STAY_ALIVE = False
self.QUIT = False
self.rsa = RSA()
# listen for other user's name on socket
def recv_other_data(self, sock):
other_data = None
while not other_data:
# TODO maybe stop after a few tries
other_data = sock.recv(1024)
split_data = other_data.split(":")
other_name = split_data[0]
pubkey = (int(split_data[1]), int(split_data[2]))
return (other_name, pubkey)
# get an rsa object god this needs refactoring, also gen keypair
def rsa_gen_keypair(self):
self.rsa.gen_keypair()
self.n, self.e = self.rsa.get_public_key()
# wait for a connection, and send our name on it
def wait_connection(self):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind((self.HOST, C.CLIENT_MAIN_PORT))
sock.listen(1)
# wait for an incoming connection
# TODO loop on timeout, allow user to kill
sock.settimeout(self.SERVER_TIMEOUT)
self.server_wait = True
conn = None
while self.server_wait:
try:
conn, addr = sock.accept()
self.server_wait = False
except:
continue
# close original listen socket
sock.close()
# if no connection was established, return failure
if conn is None:
return (None, None)
conn.settimeout(self.TIMEOUT)
# wait for other user's name
other_name, pub_key = self.recv_other_data(conn)
self.rsa.get_other_pub_key(pub_key)
# send our name back to other user
data = self.config.name + ":" + str(self.n) + ":" + str(self.e)
conn.sendall(data)
return (conn, other_name)
# attempt to make a connection, and send our name on it
def attempt_connection(self, ip):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind((self.HOST, C.CLIENT_MAIN_PORT))
sock.settimeout(1)
if self.register_agent.CONNECTED:
if len(ip.split(".")) != 4:
# this is a name, not an IP, so search userlist
for addr in self.register_agent.userlist.keys():
if self.register_agent.userlist[addr][0] == ip:
ip = addr
try:
sock.connect((ip, C.CLIENT_MAIN_PORT))
except:
# return None tuple on failure
sock.close()
return (None, None)
sock.settimeout(self.TIMEOUT)
#send data to the other user
data = self.config.name + ":" + str(self.n) + ":" + str(self.e)
sock.sendall(data)
# wait for their name in return
other_name, pub_key = self.recv_other_data(sock)
self.rsa.get_other_pub_key(pub_key)
return (sock, other_name)
def make(self, msg, key):
pkcs15 = PKCS15()
rsa = RSA()
dgst = hashlib.sha1(message).digest() #计算msg的sha1
paddgst = pkcs15.pad(dgst, len(i2s(key[1]))) #把sha1进行填充，填充函数在前面有解释
return rsa.encrypt(paddgst, key) #调用rsa加密的方法进行加密，c39中有rsa的算法
customers.append(sys.argv[2+i])
except IndexError:
print("Missing customer name", sys.stderr)
exit(1)
return customers
if __name__ == "__main__":
customers_lst = parsing_arguments()
# Creating the bank
print("Creation of the Bank ", end="",flush=True)
os.mkdir(tools.DIR_BANK)
keys = RSA.generate_keys()
RSA.store_key(tools.DIR_BANK, keys[RSA.private], keys[RSA.public])
print(DONE)
rsa_bank = RSA(keys[RSA.private][RSA.modulus],
d=keys[RSA.private][RSA.private_exponent])
# Creating the customers
os.mkdir(tools.DIR_CUSTOMERS)
customers_list = []
for customer in customers_lst:
print("Creation of the customer " + customer, end=" ", flush=True)
# Creation of the customer's path
directory = os.path.join(tools.DIR_CUSTOMERS, customer)
def send(self, data):
receiverCertificate = data['certificate']
inputEntry = self.father.inputEntry
message = inputEntry.get()
sender = self.father.father.username
receiver = receiverCertificate['username']
encryptionType = receiverCertificate['encryptionType']
receiverPublicKey = receiverCertificate['publicKey']
communicationType = receiverCertificate['communicationType']
less = 0
logArea = self.father.logArea
log = ctime() + " Receive Certificate\n\n"
if communicationType == 'rsa':
log += ctime() + " Communication Type: RSA\n\n"
# logArea.insert(tk.END, log + '\n\n')
# logArea.see(tk.END)
if encryptionType == 'caesar':
# encryption = Caesar()
c = Caesar()
cypherText, key = c.encryption(message)
r = RSA(0)
encryptedKey = r.encryption(key, receiverPublicKey)
# print(cypherText, self.father.father.selfInfo['priKey'])
if len(cypherText) > 5:
signature = r.sign(
cypherText[0:6],
self.father.father.selfInfo['priKey'])
else:
signature = r.sign(
cypherText,
self.father.father.selfInfo['priKey'])
data = {
'type': 'singleChat',
'encryptedMessage': cypherText,
'encryptedKey': encryptedKey,
'signature': signature,
'to': receiver,
'from': sender
}
log += ctime() + " Encryption Type: Caesar\n\n"
# logArea.insert(tk.END, log + '\n\n')
# logArea.see(tk.END)
elif encryptionType == 'playfair':
p = Playfair()
cypherText, key = p.encryption(message)
r = RSA(0)
encryptedKey = r.encryption(key, receiverPublicKey)
if len(cypherText) > 5:
signature = r.sign(
cypherText[0:6],
self.father.father.selfInfo['priKey'])
else:
signature = r.sign(
cypherText,
self.father.father.selfInfo['priKey'])
data = {
'type': 'singleChat',
'encryptedMessage': cypherText,
'encryptedKey': encryptedKey,
'signature': signature,
'to': receiver,
'from': sender
}
log += ctime() + " Encryption Type: Playfair\n\n"
elif encryptionType == 'des':
d = des()
key, temp = d.randomkey()
cypherText = d.encrypt(key, message)
# if message
r = RSA(0)
encryptedKey = r.encryption(key, receiverPublicKey)
if len(cypherText) > 5:
signature = r.sign(
cypherText[0:6],
self.father.father.selfInfo['priKey'])
else:
signature = r.sign(
cypherText,
self.father.father.selfInfo['priKey'])
data = {
'type': 'singleChat',
'encryptedMessage': cypherText,
'encryptedKey': encryptedKey,
'signature': signature,
'to': receiver,
'from': sender
}
log += ctime() + " Encryption Type: DES\n\n"
# pass
else:
d = des()
keys = d.randomkey()
# less = 0
if len(message) % 8 != 0:
less = 8 - (len(message) - len(message) // 8 * 8)
for i in range(less):
message += '0'
print(message)
# print("--------------------", keys[0], keys[1])
cypherText = d.tencrypt(keys[0], keys[1], message)
print("--------------------", keys[0], keys[1],
cypherText)
r = RSA(0)
encryptedKey = r.encryption(keys, receiverPublicKey)
if len(cypherText) > 5:
signature = r.sign(
cypherText[0:6],
self.father.father.selfInfo['priKey'])
else:
signature = r.sign(
cypherText,
self.father.father.selfInfo['priKey'])
data = {
'less': less,
'type': 'singleChat',
'encryptedMessage': cypherText,
'encryptedKey': encryptedKey,
'signature': signature,
'to': receiver,
'from': sender
}
log += ctime() + " Encryption Type: 3DES\n\n"
else:
mA = data['mA']
key = pow(mA, self.father.father.selfInfo['secretB'],
self.father.father.selfInfo['pAndg'][0])
if encryptionType == 'caesar':
c = Caesar(key)
cypherText = c.encryption(message)
r = RSA(0)
encryptedKey = r.encryption(key, receiverPublicKey)
if len(cypherText) > 5:
signature = r.sign(
cypherText[0:6],
self.father.father.selfInfo['priKey'])
else:
signature = r.sign(
cypherText,
self.father.father.selfInfo['priKey'])
data = {
'type': 'singleChat',
'encryptedMessage': cypherText,
'encryptedKey': encryptedKey,
'signature': signature,
'to': receiver,
'from': sender
}
log += ctime() + " Encryption Type: Playfair\n\n"
elif encryptionType == 'playfair':
p = Playfair()
cypherText, key = p.encryption(message)
r = RSA(0)
encryptedKey = r.encryption(key, receiverPublicKey)
if len(cypherText) > 5:
signature = r.sign(
cypherText[0:6],
self.father.father.selfInfo['priKey'])
else:
signature = r.sign(
cypherText,
self.father.father.selfInfo['priKey'])
data = {
'type': 'singleChat',
'encryptedMessage': cypherText,
'encryptedKey': encryptedKey,
'signature': signature,
'to': receiver,
'from': sender
}
log += ctime() + " Encryption Type: Playfair\n\n"
elif encryptionType == 'des':
d = des()
key, temp = d.randomkey()
cypherText = d.encrypt(key, message)
# if message
r = RSA(0)
encryptedKey = r.encryption(key, receiverPublicKey)
if len(cypherText) > 5:
signature = r.sign(
cypherText[0:6],
self.father.father.selfInfo['priKey'])
else:
signature = r.sign(
cypherText,
self.father.father.selfInfo['priKey'])
data = {
'type': 'singleChat',
'encryptedMessage': cypherText,
'encryptedKey': encryptedKey,
'signature': signature,
'to': receiver,
'from': sender
}
log += ctime() + " Encryption Type: DES\n\n"
# pass
else:
d = des()
keys = d.randomkey()
# less = 0
if len(message) % 8 != 0:
less = 8 - (len(message) - len(message) // 8 * 8)
for i in range(less):
message += '0'
print(message)
# print("--------------------", keys[0], keys[1])
cypherText = d.tencrypt(keys[0], keys[1], message)
print("--------------------", keys[0], keys[1],
cypherText)
r = RSA(0)
encryptedKey = r.encryption(keys, receiverPublicKey)
if len(cypherText) > 5:
signature = r.sign(
cypherText[0:6],
self.father.father.selfInfo['priKey'])
else:
signature = r.sign(
cypherText,
self.father.father.selfInfo['priKey'])
data = {
'less': less,
'type': 'singleChat',
'encryptedMessage': cypherText,
'encryptedKey': encryptedKey,
'signature': signature,
'to': receiver,
'from': sender
}
log += ctime() + " Encryption Type: 3DES\n\n"
# pAndg = receiverCertificate['pAndg']
# self.father.father.selfInfo['secretB'] = getPrimeNum(20)
# mB = pow(pAndg[1], self.father.father.selfInfo['secretB'], pAndg[0])
# receiverCertificate['mB'] = mB
pass
jData = json.dumps(data)
self.socket.send(jData.encode())
print('__send__' + jData)
# update log
log += ctime() + " Send Message Success\n\n"
logArea.insert(tk.END, log)
logArea.see(tk.END)
# update text
textArea = self.father.textArea
if less != 0:
message = message[0:-less]
text = '['+ sender + ' -> ' + receiver + ' ' + \
ctime() + ']\n\t' + message + '\n'
textArea.insert(tk.END, text)
textArea.see(tk.END)
inputEntry.delete(0, tk.END)
from rsa import RSA
from gmpy2 import powmod, invert
def rsa_encrypt(plaintext, publickey):
nums = publickey.public_numbers()
return powmod(plaintext, nums.e, nums.n)
def rsa_decrypt(ciphertext, privatekey):
nums = privatekey.private_numbers()
return powmod(ciphertext, nums.d, nums.public_numbers.n)
if __name__ == "__main__":
manager = RSA(public_exponent=65537, key_size=2048)
private_key = manager.private_key
public_key = manager.public_key
n = public_key.public_numbers().n
a = 5
b = 10
encrypted_a = rsa_encrypt(a, public_key)
encrypted_b = rsa_encrypt(b, public_key)
# mutiplying the encrypted value of a with the
# encrypted value of b, to obtain the product of
# both encrypted values
encrypted_product = (encrypted_a * encrypted_b) % n
# getting the product of the two plaintext values
product = rsa_decrypt(encrypted_product, private_key)
getcontext().prec = keylen * 8 #这里是设置精度
forge = "\x00\x01%s\x00%s" % ("\xff" * 8, dgst) # 填充过程
garbage = "\x00" * (keylen - 8 - len(dgst) - 13)
whole = s2i(forge+garbage)
cr = int(pow(whole,Decimal(1)/Decimal(3)))+1 #把我们得到的whole开3次方，得到的应该是我们伪造的加密sign
return i2s(cr) #转换为字符串
if __name__ == "__main__":
message = "hi mom"
print 'msg is :'+message+'\n'
re = RSA()
pub1,priv1 = re.keygen(l=512,s=False) #通过c39里的函数获得密钥
rs = RSAsign()
sign = rs.make(message,priv1) #调用函数算出sign的rsa加密之后的结果
print 'rsa sign is :'+''.join(sign)+'\n'
if rs.verify(message,sign,pub1): #这个地方是验证如果成功就输出ok
print "sign is correct \n"
else:
print 'sign is incorrect \n'
signf = [ forging(message,pub1) ] #这个利用公钥和消息我们可以伪造出一个signf
print 'signf is :'+''.join(signf)+'\n'
if rs.verify(message,signf,pub1): #这个地方是验证
print "sign is correct \n"
else:
def make(self,msg,key): pkcs15 = PKCS15() rsa = RSA() dgst = hashlib.sha1(message).digest() #计算msg的sha1 paddgst = pkcs15.pad(dgst,len(i2s(key[1]))) #把sha1进行填充，填充函数在前面有解释 return rsa.encrypt(paddgst,key) #调用rsa加密的方法进行加密，c39中有rsa的算法
forge = "\x00\x01%s\x00%s" % ("\xff" * 8, dgst) # 填充过程
garbage = "\x00" * (keylen - 8 - len(dgst) - 13)
whole = s2i(forge + garbage)
cr = int(pow(
whole,
Decimal(1) / Decimal(3))) + 1 #把我们得到的whole开3次方，得到的应该是我们伪造的加密sign
return i2s(cr) #转换为字符串
if __name__ == "__main__":
message = "hi mom"
print 'msg is :' + message + '\n'
re = RSA()
pub1, priv1 = re.keygen(l=512, s=False) #通过c39里的函数获得密钥
rs = RSAsign()
sign = rs.make(message, priv1) #调用函数算出sign的rsa加密之后的结果
print 'rsa sign is :' + ''.join(sign) + '\n'
if rs.verify(message, sign, pub1): #这个地方是验证如果成功就输出ok
print "sign is correct \n"
else:
print 'sign is incorrect \n'
signf = [forging(message, pub1)] #这个利用公钥和消息我们可以伪造出一个signf
print 'signf is :' + ''.join(signf) + '\n'
if rs.verify(message, signf, pub1): #这个地方是验证
print "sign is correct \n"
else:
import binascii import gmpy2 from rsa import RSA rsa_0 = RSA() n_0 = rsa_0.get_public_key()[1] rsa_1 = RSA() n_1 = rsa_1.get_public_key()[1] rsa_2 = RSA() n_2 = rsa_2.get_public_key()[1] message = "secret" # we use crt to find message number = int(binascii.hexlify(message.encode()), 16) print(number) c_0 = rsa_0.encrypt(number) c_1 = rsa_1.encrypt(number) c_2 = rsa_2.encrypt(number) result = 0 result += c_0 * (n_1 * n_2) * pow(n_1 * n_2, -1, n_0) result += c_1 * (n_0 * n_2) * pow(n_0 * n_2, -1, n_1) result += c_2 * (n_0 * n_1) * pow(n_0 * n_1, -1, n_2) decrypted = result % (n_0 * n_1 * n_2) decrypted = int(gmpy2.cbrt(decrypted)) print(decrypted) print(binascii.unhexlify(hex(decrypted)[2:]).decode())
