def main(): # Fast recovery
from AES_128 import xor_data
enc = get_encrypted_data()
length = len(enc)
print '[+] Length of data = %d' % length
print '[+] Recovering data'
modification_string = 'x'*length
new_enc = edit(enc, 0, modification_string)
data = xor_data(xor_data(enc, new_enc), modification_string)
print data
print '[+] Finished recovering data'
def main(): # Fast recovery
from AES_128 import xor_data
enc = get_encrypted_data()
length = len(enc)
print '[+] Length of data = %d' % length
print '[+] Recovering data'
modification_string = 'x' * length
new_enc = edit(enc, 0, modification_string)
data = xor_data(xor_data(enc, new_enc), modification_string)
print data
print '[+] Finished recovering data'
def crack(e_oracle, d_oracle):
injection_string = ';admin=true;'
constant_regions = get_constant_regions(e_oracle, len(injection_string))
central_oracle = get_central_oracle(e_oracle)
joke_string = 'X'*len(injection_string)
modified_ciphertext = xor_data(xor_data(joke_string, injection_string), central_oracle(joke_string))
attack = ''
attack += constant_regions[0]
attack += modified_ciphertext
attack += constant_regions[1]
if d_oracle(attack) == True:
print "[+] Cracked using %s" % repr(attack)
else:
print "[-] Failed using %s" % repr(attack)
def crack(e_oracle, d_oracle):
injection_string = ';admin=true;'
constant_regions = get_constant_regions(e_oracle, len(injection_string))
central_oracle = get_central_oracle(e_oracle)
joke_string = 'X' * len(injection_string)
modified_ciphertext = xor_data(xor_data(joke_string, injection_string),
central_oracle(joke_string))
attack = ''
attack += constant_regions[0]
attack += modified_ciphertext
attack += constant_regions[1]
if d_oracle(attack) == True:
print "[+] Cracked using %s" % repr(attack)
else:
print "[-] Failed using %s" % repr(attack)
def crack(e_oracle, d_oracle):
block_size = get_len_of_block_cipher(e_oracle)
print "[+] Block size = %d" % block_size
input_plaintext = 'x'*(3*block_size)
encrypted = e_oracle(input_plaintext)
try:
modified_encrypted = encrypted[0:block_size] + '\x00'*block_size + encrypted[0:block_size] + encrypted[block_size*2:]
d_oracle(modified_encrypted)
print "[-] An error should've occured. It didn't. Thereby, an error occurred."
except PaddingException:
print "[-] Something somewhere went terribly wrong"
except ValueError as e: # This is where we attack
recovered_plaintext = str(e)
key = xor_data(recovered_plaintext[0:block_size], recovered_plaintext[block_size*2:block_size*3])
if verify_key(key):
print "[+] Cracked key = %s" % repr(key)
else:
print "[+] Cracking failed with = %s" % repr(key)
def crack(e_oracle, d_oracle):
block_size = get_len_of_block_cipher(e_oracle)
print "[+] Block size = %d" % block_size
input_plaintext = 'x' * (3 * block_size)
encrypted = e_oracle(input_plaintext)
try:
modified_encrypted = encrypted[
0:block_size] + '\x00' * block_size + encrypted[
0:block_size] + encrypted[block_size * 2:]
d_oracle(modified_encrypted)
print "[-] An error should've occured. It didn't. Thereby, an error occurred."
except PaddingException:
print "[-] Something somewhere went terribly wrong"
except ValueError as e: # This is where we attack
recovered_plaintext = str(e)
key = xor_data(recovered_plaintext[0:block_size],
recovered_plaintext[block_size * 2:block_size * 3])
if verify_key(key):
print "[+] Cracked key = %s" % repr(key)
else:
print "[+] Cracking failed with = %s" % repr(key)