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by eru
1586 days ago
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Yes, that's possible in general. Though fairly unlikely, if the hash was 'random'. We know the structure of SHA256, so we could actually answer that question. https://en.wikipedia.org/wiki/Preimage_attack says that pre-image attacks on hash function in general only take 2^n time (ie you don't need to look for passwords longer than 256 bits), but I don't see how they conclude that. |
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