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20 lines
599 B
Python
20 lines
599 B
Python
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import pyDes
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class RFBDes(pyDes.des):
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def setKey(self, key):
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"""
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RFB protocol for authentication requires client to encrypt
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challenge sent by server with password using DES method. However,
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bits in each byte of the password are put in reverse order before
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using it as encryption key.
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"""
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newkey = list()
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for bsrc in key:
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btgt = 0
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for i in range(8):
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if bsrc & (1 << i):
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btgt = btgt | (1 << 7-i)
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newkey.append(btgt)
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super(RFBDes, self).setKey(newkey)
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