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 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))
class rsaOracle(object):
def __init__(self):
self.rsa = RSA(1024)
def get_public_key(self):
return self.rsa.get_public_key()
def get_parity(self, ciphertext):
return self.rsa.decrypt(ciphertext)[-1] & 1
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
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
class RSA_server() : def __init__(self, keylen) : self.rsa = RSA(keylen) self.received_texts = set() def get_public_key(self) : return self.rsa.get_public_key() def decrypt(self, text) : if text in self.received_texts : return None self.received_texts.add(text) return self.rsa.decrypt(text)
class LocalOracle(Oracle):
def __init__(self, plaintext, mode):
Oracle.__init__(self, mode)
from rsa import RSA
from secret import p, q, e
self._rsa = RSA(p, q, e)
self._ciphertext = self._rsa.encrypt(bytes_to_long(plaintext))
self._rsa.set_firewall()
def call(self, number):
Oracle.call(self, number)
if self._mode == Oracle.MODE_DECRYPT:
return self._rsa.decrypt(number)
if self._mode == Oracle.MODE_ENCRYPT:
return self._rsa.encrypt(number)
def decrypt():
data = list(map(int, request.form.get('data').split(',')))
d = request.form.get('d')
n = request.form.get('n')
if not data or not d or not n:
return 'Bad Request', 400
if len(d) > 5 or len(n) > 5:
return 'Bad Request', 400
try:
decrypted_data = RSA.decrypt(data=data, d=int(d), n=int(n))
except Exception as e:
return 'Bad Request', 400
return {'decrypted_data': decrypted_data}
def decrypt_file(self, filenames):
for fp in filenames:
if os.path.exists(fp):
file_lines = []
with open(fp, 'r') as to_decrypt:
file_lines = to_decrypt.readlines()
encrypted_message = file_lines[3]
decrypted_message = RSA.decrypt(encrypted_message, self.n,
self.d)
new_fp = 'decrypt_' + fp
with open(new_fp, 'w') as out:
out.write(decrypted_message)
print("Saved decrypted_message to " + new_fp)
else:
print("Error: Could not decrypt " + fp +
". File does not exist!")
class Peer:
def __init__(self, addr, port):
self.ip=addr
self.port=port
self.node = socket.socket()
self.crypt=RSA()
tuple=self.crypt.prime_tuple()
p, q = tuple
n=p*q
e=self.crypt.public_key(tuple)
self.pub_k=(e, n)
d=self.crypt.private_key(tuple, e)
self.priv_k=(d, n)
print(self.pub_k)
def connection(self):
self.node.connect((self.ip, self.port))
counter=0
while True:
query_en=self.node.recv(2048)
if query_en:
query=query_en.decode("utf-8")
if query in ["Enter username: "******"Enter password: "******"Enter public key: "]:
response=input(query)
type(response)
self.node.sendall(str.encode(response))
counter+=1
if counter==3:
break
message=(self.node.recv(2048)).decode("utf-8")
if message=="Name a group that you would want to create or join: ":
group=input(message)
type(group)
if group is not "":
self.node.sendall(str.encode(group))
data=self.node.recv(2048)
if data:
encoded=data.decode("utf-8")
res=self.crypt.decrypt(encoded, self.priv_k)
print(res)
self.node.close()
def showDialog(self):
self.anchor = int(self.le1.text())
self.accuracy = int(self.leac.text())
if (self.anchor < self.accuracy):
QMessageBox.about(self, "ERROR", "need threshold > accuracy")
else:
self.text = self.le2.text()
rsa1 = RSA(self.anchor, self.accuracy, self.text)
rsa1.create_key()
self.ciphertext = rsa1.encrypt([rsa1.e, rsa1.n], rsa1.text)
self.plaintext = rsa1.decrypt([rsa1.d, rsa1.n], self.ciphertext)
self.ciphertext = [chr(a) for a in self.ciphertext]
a = ''.join(self.ciphertext)
self.le3.setText(str(self.text))
self.le4.setText(str(a))
self.le5.setText(str(self.plaintext))
self.lep.setText(str(rsa1.p))
self.leq.setText(str(rsa1.q))
self.len.setText(str(rsa1.n))
self.lee.setText(str(rsa1.e))
self.led.setText(str(rsa1.d))
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)))
def test_decrypt_encrypt(self, p, q, e, m):
rsa = RSA(p, q, e)
self.assertEqual(m, rsa.decrypt(rsa.encrypt(m)))
rsa = RSA(p, q, e)
elif use_own_values == "2":
rsa = RSA.get_random_rsa()
elif use_own_values == "3":
run = False
break
show_values = ask_input("show_values")
if show_values == "1":
rsa.show_values()
continue_with_instance = "1"
while continue_with_instance == "1":
print()
action = ask_input("action")
print()
if action == "1":
word = input('Choose a word: ')
print('Word encrypted: {}'.format(rsa.encrypt(word)))
elif action == "2":
values = input('Input the word encrypted values: ')
values = list(map(int, values.split(', ')))
print('Word decrypted: {}'.format(rsa.decrypt(values)))
continue_with_instance = ask_input("continue_with_instance")
run = continue_with_instance != "3"
class RsaTest(object):
# Constructor
# Populates all verified outcomes
def __init__(self):
self.publicKey = 65535
self.privateKey = 14440774790529487
self.modValue = 15725236647914011
self.message = "Indiana"
self.verifiedResults = [
6203455842774329L, 10449696731316258L, 10444098371056832L,
13641245043391240L, 7463814312856899L, 10449696731316258L,
7463814312856899L
]
# Runs each tests and displays status of each
def run(self):
self.rsa = RSA()
if (self.testGCD() == False):
print("\nGCD TEST FAILED!")
return
else:
print("\nGCD TEST PASSED!")
if (self.testInvMod() == False):
print("MODULAR INVERSE TEST FAILED!")
return
else:
print("MODULAR INVERSE TEST PASSED!")
if (self.testIsPrime() == False):
print("PRIMALITY TEST FAILED!")
return
else:
print("PRIMALITY TEST PASSED!")
if (self.testGeneratePrimePair() == False):
print("PRIME PAIR GENERATION TEST FAILED!")
return
else:
print("PRIME PAIR GENERATION TEST PASSED!")
if (self.testEncryption() == False):
print("ENCRYPTION TEST FAILED!")
return
else:
print("ENCRYPTION TEST PASSED!")
if (self.testDecryption() == False):
print("DECRYPTION TEST FAILED!")
return
else:
print("DECRYPTION TEST PASSED!")
# Runs three tests to ensure Greatest COmmon Denominator functions properly
def testGCD(self):
if (self.rsa.gcd(12, 40) != 4):
return False
if (self.rsa.gcd(100, 1000) != 100):
return False
if (self.rsa.gcd(44, 99) != 11):
return False
return True
# Runs three tests to verify that inverse modulus works properly
def testInvMod(self):
if (self.rsa.invMod(12, 35) != 3):
return False
if (self.rsa.invMod(111, 1321) != 1202):
return False
if (self.rsa.invMod(45, 91) != 89):
return False
return True
# Runs three tests to verify primality function works correctly
def testIsPrime(self):
if (self.rsa.isPrime(1255567) != True):
return False
if (self.rsa.isPrime(7) != True):
return False
if (self.rsa.isPrime(7233) != False):
return False
return True
# Verifies that a random prime pair is generated so that p > q and p != q
def testGeneratePrimePair(self):
self.rsa.generatePrimePair()
a = self.rsa.primePair["p"]
b = self.rsa.primePair["q"]
if (self.rsa.isPrime(a) == False):
return False
if (self.rsa.isPrime(b) == False):
return False
if (b >= a):
return False
return True
# Verifies that the encryption algorithm works correctly
def testEncryption(self):
self.rsa.publicKey = self.publicKey
self.rsa.privateKey = self.privateKey
self.rsa.modValue = self.modValue
if (self.rsa.encrypt(self.message) != self.verifiedResults):
return False
return True
# Verifies that the decryption algorithm works correctly
def testDecryption(self):
self.rsa.publicKey = self.publicKey
self.rsa.privateKey = self.privateKey
self.rsa.modValue = self.modValue
if (self.rsa.decrypt(self.verifiedResults) != self.message):
return False
return True
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
Alice = RSA("Alice", 256)
Bob = RSA("Bob", 256)
public_Bob = Bob.public_key
public_Alice = Alice.public_key
Alice.getpublickey(public_Bob)
print("Info about Alice")
Alice.info()
Bob.getpublickey(public_Alice)
print("Info about Bob")
Bob.info()
print("Test encryption and decryption")
open = random.randint(1000000, 9999999999)
print("Open text: ", open)
cypher = Alice.encrypt(open)
print("Encrypted by Alice: ", cypher)
message = Bob.decrypt(cypher)
print("Decrypted by Bob: ", message)
print("Test signature and verification")
signa = Bob.Sign(open)
print("Message: {}\nSignature: {}".format(signa[0], signa[1]))
Ver = Alice.Verify(signa)
print("Verification: ", Ver)
print("Test for sending keys")
key = Alice.send_key()
if key == None:
key = Bob.send_key()
get = Alice.Receive(key)
print(get)
print("Key from Bob to Alice")
print("Key: {}".format(get[0]))
print("Validation: ", get[1])
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
loadUi(os.getcwd() + '/gui.ui', self)
self.constraint_input()
self.connect_buttons()
self.elgamal = Elgamal()
self.rsa = RSA()
self.dh = DiffieHellman()
self.mode = None
self.format = None
def constraint_input(self):
self.onlyInt = QIntValidator()
self.RSA_key_e_value.setValidator(self.onlyInt)
self.RSA_key_d_value.setValidator(self.onlyInt)
self.RSA_key_n_value.setValidator(self.onlyInt)
self.RSA_sess_n_value.setValidator(self.onlyInt)
self.RSA_sess_g_value.setValidator(self.onlyInt)
self.RSA_sess_x_value.setValidator(self.onlyInt)
self.RSA_sess_y_value.setValidator(self.onlyInt)
self.EG_key_p_value.setValidator(self.onlyInt)
self.EG_key_g_value.setValidator(self.onlyInt)
self.EG_key_x_value.setValidator(self.onlyInt)
self.EG_key_y_value.setValidator(self.onlyInt)
self.EG_sess_n_value.setValidator(self.onlyInt)
self.EG_sess_g_value.setValidator(self.onlyInt)
self.EG_sess_x_value.setValidator(self.onlyInt)
self.EG_sess_y_value.setValidator(self.onlyInt)
self.RSA_output_text.setReadOnly(True)
self.EG_output_text.setReadOnly(True)
def connect_buttons(self):
# Main menu buttons
self.rsabutton.clicked.connect(
lambda: self.stackedWidget.setCurrentIndex(1))
self.egbutton.clicked.connect(
lambda: self.stackedWidget.setCurrentIndex(2))
# RSA buttons
self.RSA_key_savebutton.clicked.connect(self.rsa_save_key)
self.RSA_act_execbutton.clicked.connect(self.rsa_execute)
self.RSA_key_genbutton.clicked.connect(self.rsa_generate_key)
self.RSA_key_filebutton.clicked.connect(self.rsa_import_key)
self.RSA_act_decbutton.clicked.connect(self.set_mode_dec)
self.RSA_act_encbutton.clicked.connect(self.set_mode_enc)
self.RSA_input_filebutton.clicked.connect(self.rsa_get_input_file)
self.RSA_fmt_txtbutton.clicked.connect(self.set_format_txt)
self.RSA_fmt_filebutton.clicked.connect(self.set_format_file)
self.RSA_returnbutton.clicked.connect(
lambda: self.stackedWidget.setCurrentIndex(0))
self.RSA_sess_genbutton.clicked.connect(
self.rsa_diffiehellman_generate_key)
# Elgamal buttons
self.EG_key_savebutton.clicked.connect(self.elgamal_save_key)
self.EG_act_execbutton.clicked.connect(self.elgamal_execute)
self.EG_key_genbutton.clicked.connect(self.elgamal_generate_key)
self.EG_key_filebutton.clicked.connect(self.elgamal_import_key)
self.EG_act_decbutton.clicked.connect(self.set_mode_dec)
self.EG_act_encbutton.clicked.connect(self.set_mode_enc)
self.EG_input_filebutton.clicked.connect(self.elgamal_get_input_file)
self.EG_fmt_txtbutton.clicked.connect(self.set_format_txt)
self.EG_fmt_filebutton.clicked.connect(self.set_format_file)
self.EG_returnbutton.clicked.connect(
lambda: self.stackedWidget.setCurrentIndex(0))
self.EG_sess_genbutton.clicked.connect(
self.eg_diffiehellman_generate_key)
# DIFFIE HELMAN STUFF
def rsa_diffiehellman_generate_key(self):
self.dh.generate_parameters()
n, g, x, y = self.dh.get_parameters()
self.RSA_sess_n_value.setText(str(n))
self.RSA_sess_g_value.setText(str(g))
self.RSA_sess_x_value.setText(str(x))
self.RSA_sess_y_value.setText(str(y))
sess_key = self.dh.get_session_key()
self.RSA_sess_result.setText(str(sess_key))
def eg_diffiehellman_generate_key(self):
self.dh.generate_parameters()
n, g, x, y = self.dh.get_parameters()
self.EG_sess_n_value.setText(str(n))
self.EG_sess_g_value.setText(str(g))
self.EG_sess_x_value.setText(str(x))
self.EG_sess_y_value.setText(str(y))
sess_key = self.dh.get_session_key()
self.EG_sess_result.setText(str(sess_key))
# RSA STUFF
def rsa_save_key(self):
fileNamePub, _ = QFileDialog.getSaveFileName(
None, "Save RSA Public Key", "", "Public Key File (*.pub)")
fileNamePri, _ = QFileDialog.getSaveFileName(
None, "Save RSA Private Key", "", "Private Key File (*.pri)")
# self.rsa.generate_key()
self.rsa.save_generated_keys(fileNamePub, fileNamePri)
def rsa_set_public_key(self):
e = int(self.RSA_key_e_value.text())
n = int(self.RSA_key_n_value.text())
self.rsa.set_public_key(e, n)
def rsa_set_private_key(self):
d = int(self.RSA_key_d_value.text())
n = int(self.RSA_key_n_value.text())
self.rsa.set_private_key(d, n)
def rsa_execute(self):
self.rsa_set_public_key()
self.rsa_set_private_key()
st = time.time()
if self.mode == 'enc':
if self.format == 'txt':
self.rsa.get_input(
bytes(self.RSA_input_text.toPlainText(),
'UTF-8',
errors='ignore'))
self.rsa.encrypt()
self.RSA_output_text.setText(self.rsa.get_cipher_text())
# print("RSA get cipher text: ", bytes(self.rsa.get_cipher_text(), 'UTF-8'))
elif self.format == 'file':
if self.rsa_inpfile == None:
self.display_value_error("File belum dipilih")
return
assert self.rsa_inpfile is not None
self.rsa.enc_from_file(self.rsa_inpfile)
self.rsa.encrypt()
fileName, _ = QFileDialog.getSaveFileName(
None, "Save Encrypted File", "", "All Files (*)")
print("tes({})".format(fileName))
if fileName == "":
return
self.rsa.enc_write_file(fileName)
# Print file size
self.RSA_size_value.setText(
str(os.path.getsize(fileName) / 1000))
else:
self.display_value_error("Format belum dipilih")
return
elif self.mode == 'dec':
if self.format == 'txt':
check = self.RSA_input_text.toPlainText()
print("RSA_input toPlainText ", check)
print("length of text = {}".format(len(check)))
for c in check:
print(c, end='')
print()
self.rsa.get_input(
bytes(self.RSA_input_text.toPlainText(),
'UTF-8',
errors='ignore'))
self.rsa.parse_msg_to_enc()
self.rsa.decrypt()
self.RSA_output_text.setText(self.rsa.get_plain_text())
elif self.format == 'file':
if self.rsa_inpfile == None:
self.display_value_error("File belum dipilih")
return
assert self.rsa_inpfile is not None
self.rsa.dec_from_file(self.rsa_inpfile)
self.rsa.decrypt()
fileName, _ = QFileDialog.getSaveFileName(
None, "Save Encrypted File", "", "All Files (*)")
print("tes({})".format(fileName))
if fileName == "":
return
self.rsa.dec_write_file(fileName)
# Print file size
self.RSA_size_value.setText(
str(os.path.getsize(fileName) / 1000))
else:
self.display_value_error("Format belum dipilih")
return
else:
self.display_value_error("Aksi belum dipilih")
return
end = str(time.time() - st)
# Set time execution
self.RSA_time_value.setText(end)
def rsa_generate_key(self):
self.rsa.generate_key()
d, n1 = self.rsa.get_private_key()
e, n2 = self.rsa.get_public_key()
assert n1 == n2
self.RSA_key_n_value.setText(str(n1))
self.RSA_key_d_value.setText(str(d))
self.RSA_key_e_value.setText(str(e))
def rsa_import_key(self):
fileNamePub, _ = QFileDialog.getOpenFileName(
None, "Import RSA Public Key", "", "Public Key File (*.pub)")
fileNamePri, _ = QFileDialog.getOpenFileName(
None, "Import RSA Private Key", "", "Private Key File (*.pri)")
self.rsa.import_public_key(fileNamePub)
self.rsa.import_private_key(fileNamePri)
# display the imported key in the text box
d, n1 = self.rsa.get_private_key()
e, n2 = self.rsa.get_public_key()
assert n1 == n2
self.RSA_key_n_value.setText(str(n1))
self.RSA_key_d_value.setText(str(d))
self.RSA_key_e_value.setText(str(e))
def rsa_get_input_file(self):
fileName, _ = QFileDialog.getOpenFileName(None, "Get Input File", "",
"All Files (*)")
self.rsa_inpfile = fileName
fileName = fileName.split('/')[-1]
self.RSA_inp_file_label.setText("Chosen file: {}".format(fileName))
# ELGAMAL STUFF
def elgamal_save_key(self):
fileNamePub, _ = QFileDialog.getSaveFileName(
None, "Save Elgamal Public Key", "", "Public Key File (*.pub)")
fileNamePri, _ = QFileDialog.getSaveFileName(
None, "Save Elgamal Private Key", "", "Private Key File (*.pri)")
self.elgamal.generate_key()
self.elgamal.save_generated_keys(fileNamePub, fileNamePri)
def elgamal_set_public_key(self):
p = int(self.EG_key_p_value.text())
g = int(self.EG_key_g_value.text())
y = int(self.EG_key_y_value.text())
self.elgamal.set_public_key(p, g, y)
def elgamal_set_private_key(self):
p = int(self.EG_key_p_value.text())
x = int(self.EG_key_x_value.text())
self.elgamal.set_private_key(p, x)
def elgamal_execute(self):
self.elgamal_set_public_key()
self.elgamal_set_private_key()
st = time.time()
if self.mode == 'enc':
if self.format == 'txt':
self.elgamal.get_input(
bytes(self.EG_input_text.toPlainText(),
'UTF-8',
errors='ignore'))
self.elgamal.encrypt()
self.EG_output_text.setText(self.elgamal.get_cipher_text())
elif self.format == 'file':
self.elgamal.enc_from_file(self.elgamal_inpfile)
self.elgamal.encrypt()
fileName, _ = QFileDialog.getSaveFileName(
None, "Save Encrypted File", "", "All Files (*)")
self.elgamal.enc_write_file(fileName)
# Print file size
self.EG_size_value.setText(
str(os.path.getsize(fileName) / 1000))
else:
self.display_value_error("Format belum dipilih")
return
elif self.mode == 'dec':
if self.format == 'txt':
self.elgamal.get_input(
bytes(self.EG_input_text.toPlainText(),
'UTF-8',
errors='ignore'))
self.elgamal.parse_msg_to_enc()
self.elgamal.decrypt()
self.EG_output_text.setText(self.elgamal.get_plain_text())
elif self.format == 'file':
self.elgamal.dec_from_file(self.elgamal_inpfile)
self.elgamal.decrypt()
fileName, _ = QFileDialog.getSaveFileName(
None, "Save Encrypted File", "", "All Files (*)")
self.elgamal.dec_write_file(fileName)
# Print file
self.EG_size_value.setText(
str(os.path.getsize(fileName) / 1000))
else:
self.display_value_error("Format belum dipilih")
return
else:
self.display_value_error("Aksi belum dipilih")
return
end = str(time.time() - st)
# Set time execution
self.EG_time_value.setText(end)
def elgamal_get_input_file(self):
fileName, _ = QFileDialog.getOpenFileName(None, "Get Input File", "",
"All Files (*)")
self.elgamal_inpfile = fileName
fileName = fileName.split('/')[-1]
self.EG_inp_file_label.setText("Chosen file: {}".format(fileName))
def elgamal_import_key(self):
fileNamePub, _ = QFileDialog.getOpenFileName(
None, "Import Elgamal Public Key", "", "Public Key File (*.pub)")
fileNamePri, _ = QFileDialog.getOpenFileName(
None, "Import Elgamal Private Key", "", "Private Key File (*.pri)")
self.elgamal.import_public_key(fileNamePub)
self.elgamal.import_private_key(fileNamePri)
def elgamal_generate_key(self):
self.elgamal.generate_key()
g, y, p = self.elgamal.get_public_key()
x, p = self.elgamal.get_private_key()
self.EG_key_p_value.setText(str(p))
self.EG_key_g_value.setText(str(g))
self.EG_key_x_value.setText(str(x))
self.EG_key_y_value.setText(str(y))
# OTHER STUFF
def set_mode_enc(self):
self.mode = 'enc'
def set_mode_dec(self):
self.mode = 'dec'
def set_format_txt(self):
self.format = 'txt'
def set_format_file(self):
self.format = 'file'
# VALIDATION STUFF
def display_value_error(self, err_msg: str):
msg = QMessageBox()
msg.setIcon(QMessageBox.Warning)
msg.setText("Error")
msg.setInformativeText(err_msg)
msg.setWindowTitle("Error")
msg.setStandardButtons(QMessageBox.Ok)
retval = msg.exec_()
from rsa import RSA
import src.hub as hub
"""
Universidade Federal de Alagoas - UFAL
Programa para criptografia RSA da matéria de Matemática Discreta
Participantes:
- Ana Ferreira
- Frederico Guilherme
- Lucas Tenório
- Phyllipe Bezerra
- Rafael Augusto
"""
if __name__ == "__main__":
# Opção selecionada no menu
option = hub.menu()
rsa = RSA()
if option == 1:
print("\n[1] Gerar chave pública")
rsa.generate_key()
elif option == 2:
print("\n[2] Criptografar")
rsa.encrypt()
elif option == 3:
print("\n[3] Descriptografar")
rsa.decrypt()
else:
exit(1)
def test_decrypt(p, q, e, cipher, decrypted):
rsa = RSA(p, q, e)
assert rsa.decrypt(cipher) == decrypted
print('[+] Elapsed time:', stop-start)
print()
print("[i] Your public key is: ")
time.sleep(.5)
print(rsa_object.get_elements())
print()
raw_text = input("Write a message to encrypt: ")
start = timeit.default_timer()
rsa_object.encrypt(raw_text)
stop = timeit.default_timer()
time.sleep(.2)
print("[i] Your message has been encrypted.")
print("[+] Elapsed time:", stop-start)
time.sleep(1)
print()
print("[i] Decoding message...")
start = timeit.default_timer()
rsa_object.decrypt()
stop = timeit.default_timer()
print("[i] Decoded message with chinese remainder theorem:")
print("[i] ", rsa_object.decrypted_text)
print("[+] Elapsed time: ", stop-start)
print()
print("[i] Decoded message with Fast Modular Exponentiation:")
start = timeit.default_timer()
rsa_object.decrypt2()
stop = timeit.default_timer()
print("[i] ", rsa_object.decrypted_text)
print("[+] Elapsed time: ", stop-start)
input()
import binascii from rsa import RSA rsa = RSA() plaintext_1 = 42 ciphertext_1 = rsa.encrypt(42) decrypted_1 = rsa.decrypt(ciphertext_1) print(plaintext_1, ciphertext_1, decrypted_1) plaintext_2 = "attack" number = int(binascii.hexlify(plaintext_2.encode()), 16) ciphertext_2 = rsa.encrypt(number) decrypted_2 = rsa.decrypt(ciphertext_2) string = binascii.unhexlify(hex(decrypted_2)[2:]).decode() print(plaintext_2, ciphertext_2, string)
from rsa import RSA
from dh import DHUser, DHSession
from elgamal import EGUser, EGSession
if __name__ == '__main__':
# RSA
# CRYPTO-19
c19 = RSA(17, 11, 7)
assert c19._d == 23
assert c19.public_key() == (7, 187)
assert c19.private_key() == (23, 187)
# CRYPTO-20
c = RSA.encrypt(c19.public_key(), 88)
m = RSA.decrypt(c19.private_key(), c)
assert c == 11
assert m == 88
# Diffie-Hellman
# CRYPTO-35
dh_session = DHSession(353, 3)
dh_user_a = DHUser(dh_session, 97)
dh_user_b = DHUser(dh_session, 233)
assert dh_user_a.y == 40
assert dh_user_b.y == 248
assert dh_session.session_key(dh_user_a, dh_user_b) == \
dh_user_a.session_key(dh_user_b.public_key()) == \
dh_user_b.session_key(dh_user_a.public_key()) == 160
def decrypt(event, param):
sk = currentUser.secret_key
param.set(RSA.decrypt(param.get(), sk))
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
