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from dataclasses import dataclass, field
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from channel import Channel, ChannelSym
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import random as r
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import typing
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from utils import bin_encode, bin_decode
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@dataclass
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class Bob:
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channel: Channel
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my_results: typing.List[typing.Tuple[bool, bool]] = field(default_factory=list)
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key: typing.List[bool] = field(default_factory=list)
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correctness: typing.List[bool] = field(default_factory=list)
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my_bases: typing.List[bool] = field(default_factory=list)
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def recv_photons(self, n: int = 100):
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self.my_bases = [bool(r.randint(0, 1)) for _ in range(n)]
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self.my_results = self.channel.get_photon_results(self.my_bases)
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def send_bases_and_correctness(self):
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self.channel.send_classical(bin_encode(self.my_bases))
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self.channel.send_classical(bin_encode([left + right >= 1 for left, right in self.my_results]))
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def generate_key(self, n: int = 100):
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self.recv_photons(n)
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self.send_bases_and_correctness()
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self.correctness = bin_decode(self.channel.recv_classical(n))
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self.key = [(False if k[0] else True) for k, c in zip(self.my_results, self.correctness) if c]
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