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3 votes

How much entropy is lost due to collision?

If entropy is hashed with SHA-256 for example, and the input has exactly 256 entropy bits, how much is entropy reduced after hashing due to collision? Shannon entropy is then reduced by $\eta=0....
fgrieu's user avatar
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4 votes

How much entropy is lost due to collision?

Let's assume that we have a uniform distribution. This is certainly not a given, but usually we assume that hash functions will try and have each output value be equally likely. In that case we can ...
Maarten Bodewes's user avatar
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3 votes

Entropy extraction from a Zener diode TRNG

An excellent idea. The complete design of a Zener TRNG is quite lengthy, so I'll just list a set of points and include a link to the details. You could do worse than starting with the following which ...
Paul Uszak's user avatar
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