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24 lines
723 B
Python
24 lines
723 B
Python
import struct
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from hashlib import sha1
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from .. import helpers as utils
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from ..extensions import BinaryReader
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class AuthKey:
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def __init__(self, data):
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self.key = data
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with BinaryReader(sha1(self.key).digest()) as reader:
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self.aux_hash = reader.read_long(signed=False)
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reader.read(4)
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self.key_id = reader.read_long(signed=False)
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def calc_new_nonce_hash(self, new_nonce, number):
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"""Calculates the new nonce hash based on
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the current class fields' values
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"""
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new_nonce = new_nonce.to_bytes(32, 'little', signed=True)
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data = new_nonce + struct.pack('<BQ', number, self.aux_hash)
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return utils.calc_msg_key(data)
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