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www.3dv.cn message digest, also known as hash functions, is an important tool in cryptography to generate a fixed-size digital digest of messages. these digests are used to verify the integrity of messages and ensure that they are not modified during transmission. the properties of hash functions. the ideal hash function should have the following characteristics, collision resistance, and for any given message, it is almost impossible to find another message with the same hash value, and it is almost impossible to find a message with that hash value, and it is almost impossible to anti-preimage... 2025-04-04