def conversation_speak():
print('you can now write to Bob')
cipher = AES.new(shared_key, AES.MODE_CBC, b'a' * 16)
while True:
text = input().encode()
ctext = cipher.encrypt(pkcs.pad(text, 16))
s.sendall(ctext)
def encrypt(self, string):
string = string.replace(';', '').replace('=', '')
prefix = "comment1=cooking%20MCs;userdata="
suffix = ";comment2=%20like%20a%20pound%20of%20bacon"
m = prefix + string + suffix
obj = AES.new(self.master_key, 2, self.iv)
return obj.encrypt(pkcs.pad(m.encode(), 16))
def encrypt(self, msg):
'''sandwiches msg between two random strings and encrypts under
ECB or CBC'''
plaintext = urandom(randint(5, 10)) + msg + urandom(randint(5, 10))
plaintext = pkcs.pad(plaintext, 16)
rand_mode = randint(1, 2)
obj = AES.new(self.k, rand_mode, urandom(16)) #1 = ECB, 2=CBC
return obj.encrypt(plaintext)
def decode_last_block():
target = target_blocks(0)
decoded_text = b''
for char in range(16):
for i in range(256):
if sneaky_encryption(pkcs.pad(chr(i).encode()+decoded_text, 16))\
in target:
decoded_text = (chr(i).encode()) + decoded_text
return decoded_text
def encryption_cassandra(msg):
k = unknown_key
string = b'Um9sbGluJyBpbiBteSA1LjAKV2l0aCBteSByYWctdG9wIGRvd24gc28gbXk\
gaGFpciBjYW4gYmxvdwpUaGUgZ2lybGllcyBvbiBzdGFuZGJ5IHdhdmluZyBqdXN0IHRvI\
HNheSBoaQpEaWQgeW91IHN0b3A/IE5vLCBJIGp1c3QgZHJvdmUgYnkK'
string = b64decode(string)
msg = msg + string
plaintext = pkcs.pad(msg, 16)
from Crypto.Cipher import AES
obj = AES.new(k, 1, urandom(16)) #1 = ECB, 2=CBC
return obj.encrypt(plaintext)
def encrypt(self, string):
iv = urandom(16)
obj = AES.new(self.master_key, 2, iv)
return obj.encrypt(pkcs.pad(string.encode(), 16)), iv
def encrypt(self, string):
obj = AES.new(self.master_key, 2, self.iv)
return obj.encrypt(pkcs.pad(string.encode(), 16))
def encrypt_profile(self, email):
'given email, encrypts user profile encoded as string'
encoded = pkcs.pad(self.profile_for(email).encode(), 16)
from Crypto.Cipher import AES
obj = AES.new(self.master_k, 1)
return obj.encrypt(encoded)