最近在做毕设，参考github相关代码时发现一些问题，这里给自己做个笔记提醒。(github总是犯神经，报错超时无语)
链接为 https://github.com/kenzarh/SG-PBFT
代码中间进行视图切换的消息类型操作时，有一句逻辑为给全部节点发送new-view类型消息的代码，直接修改main.py的timer_limit_before_view_change测试view-change操作时会触发receive方法中一些解密的操作问题，实际上问题出在给全部节点发送new-view类型消息这里。
源代码为：
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if (min_s>=self.stable_checkpoint["sequence_number"]):
# The primary node enters the new view
self.view_number=new_asked_view
# Decrement the credibility of the previous primary node
#credibility[self.primary_node_id] -= 1
# Change primary node (locally first then broadcast view change)
self.primary_node_id=self.node_id
# self.broadcast_message(the_nodes_ids_list,new_view_message) # broadcast_message 在接受消息时进行解密，而这里直接就发送了，没有进行加密操作，应当设置方法来集成操作
self.broadcast_new_view_message(the_nodes_ids_list,new_view_message)
所以我们需要给发送new-view消息创建独立的方法进行集成。
修改添加代码如下：
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def broadcast_new_view_message(self,nodes_ids_list,new_view_message):
signing_key = SigningKey.generate()
# Sign the message with the signing key
signed_new_view = signing_key.sign(str(new_view_message).encode())
# Obtain the verify key for a given signing key
verify_key = signing_key.verify_key
# Serialize the verify key to send it to a third party
public_key = verify_key.encode()
new_view_message = signed_new_view +(b'split')+ public_key
self.broadcast_message(nodes_ids_list,new_view_message)