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by lmm
3398 days ago
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A 256-bit hash, even a bad one, is usually more secure than a 128-bit hash, even a good one. But a 256-bit hash designed to be used as a 256-bit hash is probably going to be better than trying to come up with your own one ad-hoc by combining two 128-bit hashes. E.g. many hash functions have parts in common, so you might not get 256 independent bits that way. |
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