def is_valid(self): message = self.__gather() total_input = 0 for address, amount in self.inputs: if amount < 0: return False found = False for s in self.signatures: if signature.verify(message, s, address): found = True if not found: return False total_input += amount for address in self.reqd: found = False for s in self.signatures: if signature.verify(message, s, address): found = True if not found: return False total_output = 0 for address, amount in self.outputs: if amount < 0: return False total_output += amount #if total_output > total_input: # return False return True
def is_valid(self):
total_in = 0
total_out = 0
message = self.__gather()
for addr, amount in self.inputs:
found = False
for s in self.sigs:
if signature.verify(message, s, addr):
found = True
if not found:
#print ("No good sig found for " + str(message))
return False
if amount < 0:
return False
total_in = total_in + amount
for addr in self.requireds:
found = False
for s in self.sigs:
if signature.verify(message, s, addr):
found = True
if not found:
return False
for addr, amount in self.outputs:
if amount < 0:
return False
total_out = total_out + amount
#if total_out > total_in:
#print("Outputs exceed inputs")
# return False
return True
def recieve():
# this two lines are for loading the videos.
# in this case the video are named as: cut1.mp4, cut2.mp4, ..., cut15.mp4
os.chdir('C:/Users/Кирилл/Desktop/video')
videofiles = [n for n in os.listdir('.') if n[0] == 'v' and n[-4:] == '.avi']
videofiles = sorted(videofiles, key=lambda item: int(item.partition('.')[0][3:]))
#print(videofiles)
video_index = 0
openkey = signature.readopenkey(videofiles[0])
print(openkey)
signa = signature.readsignature(videofiles[0])
if(signature.verify(signa,openkey, videofiles[0]) == 1):
cap = cv2.VideoCapture(str(videofiles[0]))
fourcc = cv2.VideoWriter_fourcc(*'XVID')
# video resolution: 1624x1234 px
out = cv2.VideoWriter("./newvid/video.avi",
fourcc,
15, (640, 480), 1)
while (cap.isOpened()):
videofiles = [n for n in os.listdir('.') if n[0] == 'v' and n[-4:] == '.avi']
videofiles = sorted(videofiles, key=lambda item: int(item.partition('.')[0][3:]))
ret, frame = cap.read()
if frame is None:
print("end of video " + str(video_index) + " .. next one now")
video_index += 1
openkey = signature.readopenkey(videofiles[video_index])
signa = signature.readsignature(videofiles[video_index])
if video_index >= len(videofiles):
break
if (signature.verify(signa, openkey, videofiles[video_index]) == 0):
print('Video is under attack in part ' + str(video_index+1))
exit()
cap = cv2.VideoCapture(videofiles[video_index])
ret, frame = cap.read()
cv2.imshow('stream', frame)
out.write(frame)
if cv2.waitKey(20) & 0xFF == ord('q'):
break
cap.release()
out.release()
cv2.destroyAllWindows()
print
"end."
else:
print('smth is wrong')
exit()
def test_verify(self):
public_key = get_key('../../priv/public.pem')
for test_case in self.valid_test_cases:
signature = test_case['expected']
msg = test_case['input']
self.assertTrue(verify(public_key, msg, signature),
"should be true")
def verify_response(address, challenge, response):
try:
verify_challenge(address, challenge)
assert signature.verify(address, challenge, response)
except e:
return False
finally:
return True
def bt_valid(self):
controlValues.control_all()
if self.excel_file.get() != "" and self.sign_file.get() != "":
if signature.verify(self.excel_file.get(),
self.sign_file.get()) is None:
win = tkinter.Toplevel()
win.title("Hello word")
app = true_key.c_key(win, self.excel_file.get())
win.mainloop()
def verify(req=None, credentials=None):
"""
Verify a request.
:param req:
:param credentials:
:return:
"""
req = request.normalize(req)
params = auth_header.parse(req)
if not params:
return False
return signature.verify(req, credentials, params)
from encode import encode,decode import signature # This is the test data to sign data = 'test signed data' # Generate a PyCrypto RSA key using signature module key = signature.generate_key() # Sign the test data with the key sig = signature.sign(key, data) # Dump encoded versions of the keys and data to the console print 'private', signature.key_to_string(key) print 'public', signature.key_to_string(key.publickey()) print 'address', signature.public_key_to_address(key.publickey()) print 'data', data print 'signature', sig, '\n' # Test verification code print 'call to verify() with legit data\t\t\t%s\t(Should be True)' % signature.verify(key, sig, data) print 'call of verify() with tampered data\t\t\t%s\t(Should be False)' % key.verify(data+'asdf',(decode(encode(sig),type='long'),None))
def RSA(action):
if action == '2':
title('RSA keygen', fillchar='-')
print()
print()
print('Select directory for the keys.')
Tk().withdraw()
while True:
outfolder = askdirectory(
initialdir=cwd, title='Select directory to save keys in...')
if not outfolder:
print('Please choose a directory.')
else:
if not os.path.exists(outfolder):
os.makedirs(outfolder, exist_ok=True)
break
bits = int(input('Size of the key (default is 2048): ') or 2048)
rsa.generate(bits, outfolder)
elif action == '3':
title('RSA Encryption / Decryption', fillchar='-')
[print() for i in range(5)]
print('Do you want to...')
print('1. Encrypt a file')
print('2. Decrypt a file')
print('3. Exit')
print('_' * utils.get_terminal_size()[0])
print()
action = input('>> ').lower()
if action == '1':
title('RSA Encryption / Decryption', fillchar='-')
print()
print()
print('Select a file to encrypt in the dialog box.')
Tk().withdraw()
filename = askopenfilename(initialdir=cwd,
title='Choose a file to encrypt...')
print(filename)
filedir = os.path.dirname(filename)
print('Select the public key to encrypt the file with.')
Tk().withdraw()
keypath = askopenfilename(initialdir=cwd,
title='Choose a public key...')
print(keypath)
keydir = os.path.dirname(keypath)
print('Select the name for the encrypted file.')
Tk().withdraw()
outfile = asksaveasfilename(initialdir=filedir, title='Save as...')
print('Select the name for the encrypted key.')
Tk().withdraw()
outkeyfile = asksaveasfilename(initialdir=filedir,
title='Save as...')
print(outfile)
chunksize = input(
'Select chunksize (leave empty for default): ') or 64 * 1024
rsa.encrypt(keypath, filename, outfile, outkeyfile, chunksize)
elif action == '2':
title('RSA Encryption / Decryption', fillchar='-')
print()
print()
print('Select a file to decrypt in the dialog box.')
Tk().withdraw()
filename = askopenfilename(initialdir=cwd,
title='Choose a file to decrypt...')
print(filename)
filedir = os.path.dirname(filename)
print('Select the private key to decrypt the file with.')
Tk().withdraw()
keypath = askopenfilename(initialdir=cwd,
title='Choose a private key...')
print(keypath)
keydir = os.path.dirname(keypath)
print('Select the encrypted key file used to encrypt the file.')
Tk().withdraw()
keyfilepath = askopenfilename(
initialdir=filedir, title='Choose the encrypted key file...')
print(keyfilepath)
print('Select the name for the decrypted file.')
Tk().withdraw()
outfile = asksaveasfilename(initialdir=filedir, title='Save as...')
print(outfile)
chunksize = input(
'Select chunksize (leave empty for default): ') or 24 * 1024
rsa.decrypt(keypath, filename, keyfilepath, outfile, chunksize)
elif action == '3':
exit(0)
elif action == '4':
title('RSA Signature / verification', fillchar='-')
[print() for i in range(5)]
print('Do you want to...')
print('1. Sign a file')
print('2. Verify a file')
print('3. Exit')
print('_' * utils.get_terminal_size()[0])
print()
action = input('>> ').lower()
if action == '1':
title('RSA Signature / verification', fillchar='-')
print()
print()
print('Select file to sign...')
Tk().withdraw()
filename = askopenfilename(initialdir=cwd,
title='Select file to sign...')
print(filename)
filedir = os.path.dirname(filedir)
print('Select private key...')
Tk().withdraw()
privKey = askopenfilename(initialdir=cwd,
title='Select private key...')
print(privKey)
print('Select name for signature file...')
signature = asksaveasfilename(
initialdir=filedir,
title='Select signature filename...') or None
print(signature)
sign(filename, privKey, signature)
elif action == '2':
title('RSA Signature / verification', fillchar='-')
print()
print()
print('Select file to verify...')
Tk().withdraw()
filename = askopenfilename(initialdir=cwd,
title='Select file to verify...')
print(filename)
filedir = os.path.dirname(filename)
print('Select public key...')
Tk().withdraw()
pubKey = askopenfilename(initialdir=cwd,
title='Select public key...')
print(pubKey)
print('Select signature file...')
signature = askopenfilename(initialdir=filedir,
title='Select signature file...')
print(signature)
valid = verify(filename, signature, pubKey)
if valid:
print(
'Success! Signature and hash are the same, so the file has not been tampered with.'
)
_tmp = input('Press enter to continue...')
elif not valid:
clear()
print('FILE AUTHENTICITY COULD NOT BE VERIFIED!')
print(
'Do not trust the file or its sender. Did you use the correct public key?'
)
print(
'Error: Verification failed. Authenticity of file could not be verified.'
)
elif action == '3':
pass
else:
TypeError('invalid action: \'%s\' in RSA()')
print("Message: {}".format(message))
# Set the key length
# 128, 196 or 256
N = 256
# Default rounds is 16 rounds as the TwoFish paper define to us.
rounds = 16
# Generate Key and ... - TwoFish
[K, S] = TwoFish.gen_keys(str(bob_key), N, rounds)
bob_sig_key = (str((K[:1])[0]).encode('utf-8')).zfill(16)
# Digital Signature
bob_digest = sign(message, bob_sig_key)
# Alice encrypt plaintext
[num_C, Cypher_text] = TwoFish.encrypt_message(message, S, K, rounds=16)
print("Enc Message: {}\n Bob digest {}".format(Cypher_text, bob_digest))
# Alice want to know the message
# Generate Key and ... - TwoFish
[K, S] = TwoFish.gen_keys(str(alice_key), N, rounds)
plain_text = TwoFish.decrypt_message(num_C, S, K, rounds=16)
alice_sig_key = (str((K[:1])[0]).encode('utf-8')).zfill(16)
signature_status = verify(plain_text, alice_sig_key, bob_digest)
if signature_status:
print(plain_text)
else:
print("Failed")
def verify(self):
signature.verify(hash_to_scalar(self.coin), self.coin.C - self.v * Hc,
self.proof, Gc)
import signature
keys = signature.generatePairKey()
priv = split(keys, 1)
pub = signature.split(keys, 0)
signature.sign(
priv, "5a822196bf1c45b1e74c6d04e4127d0296d64695932f40909bdab3ba8a9b0528")
bool = signature.verify(
pub, "5a822196bf1c45b1e74c6d04e4127d0296d64695932f40909bdab3ba8a9b0528",
sig)
print(bool)