How to parallelize this code?

Question

Java

Good afternoon friends. I have a question. I know about how to work with hashes like SHA, MD5, etc. Implement the logic of converting the password to a hash and comparisons, I can handle this. And here with a multithreading of experience it is less. How would you parallelize this task? It occurs to me to do so. Let's say I have a dictionary containing 900 passwords. I just feed each thread 300 passwords and they look at the dictionary at the same time from a certain place in it. What are your options?