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I’m trying to store more than one sha256 hashed strings as a single string with a separator. I was using MD5 previously and was able to use a “,”. But it seems that the comma is one of the characters generated by a sha256 hash. So my question is: Are there any printable (I realize some non printable can be used) ASCII characters that will never be used in a sha256 hash?
It sounds like you aren’t converting the generated sha256 hash to hex format before, since the hashes themselves are just a number (hence a comma can appear in an MD5 hash).