序列化MD5计算状态并稍后恢复？ [英] Serialize MD5 computation-state and resume later?

问题描述

我想序列化/反序列化md5上下文。但我不知道如何用Python做到这一点。
我想要做的伪代码。

  import md5 
＃开始哈希生成
m = md5.new（）
 m.update（Content）
 
＃序列化m 
 serialized_m =序列化（m）
 
＃在另一个函数/机器，反序列化m 
＃并继续哈希生成
 m2 =反序列化（serialized_m）
 m2.update（更多内容）
 m2.digest（）
  

这里有C ++库。有Python吗？为什么md5库不支持它？有没有安全问题？感谢。

编辑：
我想这样做，因为例如，HTTP服务器想要在不同的HTTP请求中接受流数据。在请求之间以某种方式序列化md5上下文会很方便。

我问Guido V Rossum先生。他回答说：我认为没有办法，但它可能会提出一个不错的功能要求，你可以提交一个到bugs.python.org。所以我做了。

http：//bugs.python。 org / issue16059

I want to serialize/deserialize md5 context. But I don't know how to do it in Python. Pseudocode of what I want to do.

import md5
# Start hash generation
m = md5.new()
m.update("Content")

# Serialize m
serialized_m = serialize(m)

# In another function/machine, deserialize m
# and continue hash generation
m2 = deserialize(serialized_m)
m2.update("More content")
m2.digest()    

There are C++ libraries for this. Is there one for Python? Why doesn't the md5 library support it? Are there security concerns? Thanks.

Edited: I want to do this because for example, an HTTP server wants to accept streaming data in different HTTP requests. It would be convenient to serialize md5 context somehow between requests.

解决方案

I asked Mr Guido V Rossum. He replied that "I don't think there's a way. However it might make a decent feature request. You could submit one to bugs.python.org." So I did.

http://bugs.python.org/issue16059

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