Dandelion phases now have IDs so it can be known more easily if an epoch elapsed
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@ -9,18 +9,19 @@ class DandelionPhase:
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self.epoch = int(time())
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self.epoch_interval = epoch_interval_secs
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self._is_stem = True
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self.phase_id = b''
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def _update_stem_phase(self, cur_time):
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self.epoch = cur_time
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# Hash the seed with the time stamp to produce 1 pseudorandom byte
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# We produce an len(8) byte string for year 2038 problem
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choice = shake_128(
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# Hash the seed with the time stamp to produce 8 pseudorandom bytes
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# Produce an len(8) byte string for time as well for year 2038 problem
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self.phase_id = shake_128(
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self.seed +
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int.to_bytes(cur_time, 8, 'big')).digest(1)
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int.to_bytes(cur_time, 8, 'big')).digest(8)
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# If the byte is even
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if int.from_bytes(choice, 'big') % 2:
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# Use first byte of phase id as random source for stem phase picking
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if int.from_bytes(self.phase_id[0], 'big') % 2:
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self._is_stem = True
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else:
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self._is_stem = False
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