You might start with a better understanding of what a "hash" actually does. It is not encryption.
Definition - What does Message Digest mean?
A message digest is a cryptographic hash function containing a string of digits created by a one-way hashing formula.
Message digests are designed to protect the integrity of a piece of data or media to detect changes and alterations to any part of a message. They are a type of cryptography utilizing hash values that can warn the copyright owner of any modifications applied to their work.
Message digest hash numbers represent specific files containing the protected works. One message digest is assigned to particular data content. It can reference a change made deliberately or accidentally, but it prompts the owner to identify the modification as well as the individual(s) making the change. Message digests are algorithmic numbers.
This term is also known as a hash value and sometimes as a checksum.
Am one-way hash is just that - one way (non reversible)
As an integrity check (dhecksum) you simply take the source, run the given hashing algorithm and compare the resulting has to the one inluded with the source material.
A match of those two "hashes" confirms the "message" is an unmodified replica of the original. Digital Signatures (using various algorithms) fill a "similar" function, as do message authentication codes like SHA- 256.
Like reversible encryption, the longer the better i.e more secure
Scripting languages are optimized for convenience, not speed so are inferior to custom hardware-based ASICs, similar to the old school generic "math co-processors"
How that helps to avoid wasting you time on hash "decodes"