def test_encr_decr_round():
padded = pad(text, 16)
ciphert = cbc_encrypt(iv, key, padded)
#print("ciphertext:", ciphert)
plaint = cbc_decrypt(iv, key, ciphert)
#print("plaintext:", plaint)
plaint = unpad(plaint)
assert_equals(plaint, text, "encrypt/decrypt round test")
def decrypt(binInput):
global key
enc = binInput[16:]
iv = binInput[:16]
padded = cbc_decrypt(iv, key, enc)
plain = unpad(padded)
#print(plain)
return plain
def test_encr_decr_round_rnd_iv():
iv2 = bytearray(16)
iv2[0] = 1
padded = pad(text, 16)
ciphert = cbc_encrypt(iv2, key, padded)
#print("ciphertext:", ciphert)
plaint = cbc_decrypt(iv2, key, ciphert)
#print("plaintext:", plaint)
plaint = unpad(plaint)
assert_equals(plaint, text, "encrypt/decrypt round test - second IV")
def cbcDecryptIv(key, cipherInput):
iv = cipherInput[:16]
cipher = cipherInput[16:]
plain = cbc_decrypt(iv, key ,cipher)
checkPadding(plain)
#print("DDD", plain)
#print("DDD length", len(plain))
return unpad(plain)
def findAll(oracle): res = b'' while True: char = find_next_char(oracle, 16, res) if char == None: break print(char) res += bytes([char]) res = unpad(res) return res
def test_challenge10():
res = cbc_decrypt(iv, key, bin_input)
res = unpad(res)
print(res.decode())
print("challenge 10 passed")
def checkProfile(prof):
global key
plain = unpad(ecb_decrypt(key, prof))
return plain