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by vox_mollis
3642 days ago
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A lot of comments here suggesting that encryption increases entropy. While true, it only adds the key's entropy to the plaintext's entropy. In most real-world cases, len(m) >> len(k), so this is usually an insignificant increase of entropy. Compression also adds a trivial amount of entropy (specifically, the information encoding the algorithm used to compress, even if that information is out of band). |
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