如果性能不重要，只需采用安全散列(例如 MD5 或 SHA1)，并将其输出截断为 32 位.这将为您提供与随机无法区分的哈希码分布.

If performance isn't important, simply take a secure hash such as MD5 or SHA1, and truncate its output to 32 bits. This will give you a distribution of hash codes that's indistinguishable from random.