import t
# 01234567890123
s = "this is a test of ctr encryption and editing that's long enough to roll the ctr a couple of times and that."
s1 = "this is a TEST of ctr encryption and editing that's long enough to roll the ctr a couple of times and that."
k = "yellow submarine"
e = t.encrypt_aes_128_ctr(s, k)
e1 = t.edit_ctr_stream(e, 10, "TEST", k)
assert t.decrypt_aes_128_ctr(e1, k) == s1
F = open('25.txt', 'r')
s = ''.join(F.readlines()).replace('\r', '').replace('\n', '')
F.close()
s = t.decrypt_aes_128_ecb(t.base64_to_str(s), "YELLOW SUBMARINE")
o = t.CTRVictim(s, t.random_aes_key())
# use edit() to replace whole file with AAAA
original_cipher = o.get_ciphertext()
o.edit(0, "A" * len(original_cipher))
# xor ciphertext with AAAA to get encrypted keystream
keystream = t.fixed_xor(o.get_ciphertext(), "A" * len(original_cipher))
# xor encrypted keystream with original ciphertext to get plaintext
plaintext = t.fixed_xor(keystream, original_cipher)
print plaintext
assert plaintext == s
import t
F = open('20.txt', 'r')
data = F.readlines()
F.close()
key = t.random_aes_key()
r = [t.encrypt_aes_128_ctr(t.base64_to_str(d.replace('\r', '').replace('\n', '')), key) for d in data]
s = t.defeat_fixed_nonce_ctr_stats(r)
print '\n'.join(s)
print len(s)
import t
secret = t.base64_to_str(
"Um9sbGluJyBpbiBteSA1LjAKV2l0aCBteSByYWctdG9wIGRvd24gc28gbXkgaGFpciBjYW4gYmxvdwpUaGUgZ2lybGllcyBvbiBzdGFuZGJ5IHdhdmluZyBqdXN0IHRvIHNheSBoaQpEaWQgeW91IHN0b3A/IE5vLCBJIGp1c3QgZHJvdmUgYnkK"
)
print t.defeat_ecb_fixed_key_with_oracle(secret)
import t
secret = t.base64_to_str("Um9sbGluJyBpbiBteSA1LjAKV2l0aCBteSByYWctdG9wIGRvd24gc28gbXkgaGFpciBjYW4gYmxvdwpUaGUgZ2lybGllcyBvbiBzdGFuZGJ5IHdhdmluZyBqdXN0IHRvIHNheSBoaQpEaWQgeW91IHN0b3A/IE5vLCBJIGp1c3QgZHJvdmUgYnkK")
print t.defeat_ecb_fixed_key_with_oracle(secret)
"MDAwMDAxV2l0aCB0aGUgYmFzcyBraWNrZWQgaW4gYW5kIHRoZSBWZWdhJ3MgYXJlIHB1bXBpbic=",
"MDAwMDAyUXVpY2sgdG8gdGhlIHBvaW50LCB0byB0aGUgcG9pbnQsIG5vIGZha2luZw==",
"MDAwMDAzQ29va2luZyBNQydzIGxpa2UgYSBwb3VuZCBvZiBiYWNvbg==",
"MDAwMDA0QnVybmluZyAnZW0sIGlmIHlvdSBhaW4ndCBxdWljayBhbmQgbmltYmxl",
"MDAwMDA1SSBnbyBjcmF6eSB3aGVuIEkgaGVhciBhIGN5bWJhbA==",
"MDAwMDA2QW5kIGEgaGlnaCBoYXQgd2l0aCBhIHNvdXBlZCB1cCB0ZW1wbw==",
"MDAwMDA3SSdtIG9uIGEgcm9sbCwgaXQncyB0aW1lIHRvIGdvIHNvbG8=",
"MDAwMDA4b2xsaW4nIGluIG15IGZpdmUgcG9pbnQgb2g=",
"MDAwMDA5aXRoIG15IHJhZy10b3AgZG93biBzbyBteSBoYWlyIGNhbiBibG93"
]
iv = t.random_aes_key()
s = t.encrypt_random_cbc(data, iv)
assert t.check_cbc_padding(s, iv), "oops"
r = t.defeat_cbc_padding_oracle(s, iv)
print repr(r)
print t.base64_to_str(r)
out = []
for d in data:
iv = t.random_aes_key()
s = t.encrypt_random_cbc([d], iv)
out.append(t.base64_to_str(t.defeat_cbc_padding_oracle(s, iv)))
out.sort()
print '\n'.join(out)
import t s = "L77na/nrFsKvynd6HzOoG7GHTLXsTVu9qvY/2syLXzhPweyyMTJULu/6/kXX0KSvoOLSFQ==" r = t.decrypt_aes_128_ctr(t.base64_to_str(s), "YELLOW SUBMARINE") print r
data = [ "MDAwMDAwTm93IHRoYXQgdGhlIHBhcnR5IGlzIGp1bXBpbmc=",
"MDAwMDAxV2l0aCB0aGUgYmFzcyBraWNrZWQgaW4gYW5kIHRoZSBWZWdhJ3MgYXJlIHB1bXBpbic=",
"MDAwMDAyUXVpY2sgdG8gdGhlIHBvaW50LCB0byB0aGUgcG9pbnQsIG5vIGZha2luZw==",
"MDAwMDAzQ29va2luZyBNQydzIGxpa2UgYSBwb3VuZCBvZiBiYWNvbg==",
"MDAwMDA0QnVybmluZyAnZW0sIGlmIHlvdSBhaW4ndCBxdWljayBhbmQgbmltYmxl",
"MDAwMDA1SSBnbyBjcmF6eSB3aGVuIEkgaGVhciBhIGN5bWJhbA==",
"MDAwMDA2QW5kIGEgaGlnaCBoYXQgd2l0aCBhIHNvdXBlZCB1cCB0ZW1wbw==",
"MDAwMDA3SSdtIG9uIGEgcm9sbCwgaXQncyB0aW1lIHRvIGdvIHNvbG8=",
"MDAwMDA4b2xsaW4nIGluIG15IGZpdmUgcG9pbnQgb2g=",
"MDAwMDA5aXRoIG15IHJhZy10b3AgZG93biBzbyBteSBoYWlyIGNhbiBibG93" ]
iv = t.random_aes_key()
s = t.encrypt_random_cbc(data, iv)
assert t.check_cbc_padding(s, iv), "oops"
r = t.defeat_cbc_padding_oracle(s, iv)
print repr(r)
print t.base64_to_str(r)
out = []
for d in data:
iv = t.random_aes_key()
s = t.encrypt_random_cbc([d], iv)
out.append(t.base64_to_str(t.defeat_cbc_padding_oracle(s, iv)))
out.sort()
print '\n'.join(out)
"U2hlIHJvZGUgdG8gaGFycmllcnM/",
"VGhpcyBtYW4gaGFkIGtlcHQgYSBzY2hvb2w=",
"QW5kIHJvZGUgb3VyIHdpbmdlZCBob3JzZS4=",
"VGhpcyBvdGhlciBoaXMgaGVscGVyIGFuZCBmcmllbmQ=",
"V2FzIGNvbWluZyBpbnRvIGhpcyBmb3JjZTs=",
"SGUgbWlnaHQgaGF2ZSB3b24gZmFtZSBpbiB0aGUgZW5kLA==",
"U28gc2Vuc2l0aXZlIGhpcyBuYXR1cmUgc2VlbWVkLA==",
"U28gZGFyaW5nIGFuZCBzd2VldCBoaXMgdGhvdWdodC4=",
"VGhpcyBvdGhlciBtYW4gSSBoYWQgZHJlYW1lZA==",
"QSBkcnVua2VuLCB2YWluLWdsb3Jpb3VzIGxvdXQu",
"SGUgaGFkIGRvbmUgbW9zdCBiaXR0ZXIgd3Jvbmc=",
"VG8gc29tZSB3aG8gYXJlIG5lYXIgbXkgaGVhcnQs",
"WWV0IEkgbnVtYmVyIGhpbSBpbiB0aGUgc29uZzs=",
"SGUsIHRvbywgaGFzIHJlc2lnbmVkIGhpcyBwYXJ0",
"SW4gdGhlIGNhc3VhbCBjb21lZHk7",
"SGUsIHRvbywgaGFzIGJlZW4gY2hhbmdlZCBpbiBoaXMgdHVybiw=",
"VHJhbnNmb3JtZWQgdXR0ZXJseTo=",
"QSB0ZXJyaWJsZSBiZWF1dHkgaXMgYm9ybi4="
]
key = t.random_aes_key()
r = [t.encrypt_aes_128_ctr(t.base64_to_str(d), key) for d in data]
# why don't i just take the first block of each and treat as 40 blocks of repeating key xor ? ...
s = t.defeat_fixed_nonce_ctr(r)
print s
print len(s)
import t
F = open('20.txt', 'r')
data = F.readlines()
F.close()
key = t.random_aes_key()
r = [
t.encrypt_aes_128_ctr(
t.base64_to_str(d.replace('\r', '').replace('\n', '')), key)
for d in data
]
s = t.defeat_fixed_nonce_ctr_stats(r)
print '\n'.join(s)
print len(s)