[Python-Dev] Hash collision security issue (now public) (original) (raw)
Guido van Rossum guido at python.org
Sun Jan 1 16:13:11 CET 2012
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Different concern. What if someone were to have code implementing an external, persistent hash table, using Python's hash() function? They might have a way to rehash everything when a new version of Python comes along, but they would not be happy if hash() is different in each process. I somehow vaguely remember possibly having seen such code, or something else where a bit of random data was needed and hash() was used since it's so easily available.
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