def encode_plain(s):
r = []
s_bytes = [ord(c) for c in s]
crc = crc_32(s_bytes)
# length, twice
r.append(len(s))
r.append(len(s))
# encode CRC as LE
r.extend([(crc >> i) & 255 for i in range(0, 32, 8)])
# payload, plaintext
r.extend(s_bytes)
return r
def encode_pw(pw):
r = []
pw_bytes = [ord(c) for c in pw]
encrypted_pw = encrypt(pw)
# CRC and length are from plaintext
crc = crc_32(pw_bytes)
# length, twice
r.append(len(pw))
r.append(len(pw))
# encode CRC as LE
r.extend([(crc >> i) & 255 for i in range(0, 32, 8)])
# payload, AES encrypted
r.extend(encrypted_pw)
return r