All you&#x27;re doing then is fiddling with probabilities. You can do that just as well by changing the length of the sha unless you have a reason to think sha is broken.<p>However, the probability of a hash collision is already incredibly low. As a demonstration of this, here&#x27;s a list of a tiny subset of bitcoin private keys: <a href="http:&#x2F;&#x2F;directory.io&#x2F;" rel="nofollow">http:&#x2F;&#x2F;directory.io&#x2F;</a><p>The human mind just isn&#x27;t capable of understanding how large of a number the number of sha hashes is.