Serialize MD5 computation-state and resume later?

Question

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          


        

Answer 1

HASH objects are not serializable: How to serialize hash objects in Python

Assuming you can pass around the unhashed data:

from Crypto.Hash import MD5

# generate hash
m = MD5.new()
s = "foo"
m.update(s)

# serialize m
serialized = s

# deserialize and continue hash generation
m2 = MD5.new(serialized)
if m2.hexdigest() == m.hexdigest():
    print "success"
m2.update("bar")

Answer 2

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