aes-128-cbc

aes-128-cbc

root@toto:~# echo -n 0000000000000000 | xxd -g 0
0000000: 30303030303030303030303030303030  0000000000000000

root@toto:~# echo -n 1234567890 | openssl aes-128-cbc -e -K 30303030303030303030303030303030 -iv 00000000000000000000000000000000 | md5sum
aa8301604be724a92e1f223e14caea68  -

root@toto:~# python2 -c 'import sys, Crypto.Cipher.AES as A; sys.stdout.write(A.new("0"*16, A.MODE_CBC, "\0"*16).encrypt("1234567890\6\6\6\6\6\6"))' | md5sum
aa8301604be724a92e1f223e14caea68  -

without_iv_counter.py

from Crypto import Random
from Crypto.Cipher import AES

key = "0" * 16
keyHex = key.encode('hex')
keyHex = '\0' * 16

with open("in", "rb") as chunk:
    chunk_data = chunk.read()

pad = 16 - (len(chunk_data) % 16)
chunk_data += chr(pad) * pad

aes = AES.new(key, AES.MODE_CBC, keyHex)
chunk_data = aes.encrypt(chunk_data)

with open("out2.ts", "wb") as chunk:
    chunk.write(chunk_data)

# echo toto > in
# openssl aes-128-cbc -e -in in -out out.ts -iv 0000000000000000 -K 30303030303030303030303030303030
# diff out*

En fonction du vi_counter :
("%032X" % vi_counter).decode("hex")