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What does it mean if two files created by the same person shares the same SHA256 hash?

If these two documents' SHA256 matches then by definition of collision resistance, these two documents are identical, or (including and) SHA-256's collision resistance is broken. There is consensus ...
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What does it mean if two files created by the same person shares the same SHA256 hash?

SHA-256 is a cryptographically secure hash function. That means that it exhibits three important properties: Preimage resistance: given a hash value, it is difficult to find any message which has ...
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