Does the MD5 collision method have such a big impact? Although I personally didn't have a very deep study of encryption, I personally think that even if I can find a document that collide with it for a document, can this new document be read? For example, give a contract, which is 5,000 yuan. When you change this amount to 500 and let the new document collide with the original document, then the other part of the new document you produce will generate unreadable strings. ?
In addition, the collision of MD5 may be easily found, and the collisions of SHA-1 may be easy to find, but these two algorithms have a collision situation at the same time? Why not merge the hash results of these two algorithms together, according to this "composite hash result" as the final result. Of course, according to the principle of "pigeon", even if it is certainly there is a collision, it is not more difficult to find this method of collision?
