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Make ARC key cleaner

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573dev 2020-10-14 08:54:35 -05:00
parent 12ce2b53af
commit fb09646ef5
1 changed files with 3 additions and 10 deletions
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13
v8_server/utils/arc4.py
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@ -4,16 +4,9 @@ from Crypto.Hash import MD5
class EamuseARC4(object):
def __init__(self, eamuse_key):
# fmt: off
internal_key = bytearray([
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x69, 0xd7,
0x46, 0x27, 0xd9, 0x85, 0xee, 0x21, 0x87, 0x16,
0x15, 0x70, 0xd0, 0x8d, 0x93, 0xb1, 0x24, 0x55,
0x03, 0x5b, 0x6d, 0xf0, 0xd8, 0x20, 0x5d, 0xf5,
])
# fmt: on
key = MD5.new(eamuse_key + internal_key[6:]).digest()
secret_key = 0x69D74627D985EE2187161570D08D93B12455035B6DF0D8205DF5
key_bytes = bytearray(secret_key.to_bytes(26, "big"))
key = MD5.new(eamuse_key + key_bytes).digest()
self.arc = ARC4.new(key)
def decrypt(self, data):