Edit: Asking more in the sense of what makes the algorithms process worse than others, sorry for the ambiguity.
In: Technology
Several of the other comments already say it’s possible to generate a hash collision. There are some specifics about this that I think are important: it is possible to create two messages with the same hash. It is not possible to create a message with a specific hash. So you create two documents with the same hash, but it’s not possible to create a document that matches the hash of another, given, document. You need to control and change both documents to create a collision. In other words, MD5 is still [preimage resistant](https://en.wikipedia.org/wiki/Preimage_attack), but not [collision resistant](https://en.wikipedia.org/wiki/Collision_resistance).
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