New answers tagged collision-resistance
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....
- 138k
3
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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 ...
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0
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Hash Collision: Weak and Strong Resistance
On average, against a 128-bit-long key, how many more hash computations would an attacker need to perform to break weak collision resistance compared to breaking strong collision resistance? In other ...
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