Say I hashed the output from a random number generator (with nonce), would the resulting SHA256 hash be as random as the inputted number?
And If I used the first 5 hex characters, and then used the first 5 ignoring the very first character and so on repeating removal of the first character, would each number be just as random?
Example of what I mean, here's a 512 bit hex string.
Is any segment of 5 characters chosen from random locations in the string guaranteed to be a fairly random number?
I am trying to make a pretty simple random number generated based on a hashed seed.