I have read that output that varies by key size or file size can leak information. So if it should produce fixed size then what is the scenario if it produces fixed range?
By fixed range I mean that for example, by hashing the word
"hello" or by hashing 100 MB file produces the length not more than 320 digits long typically rendered as a hexadecimal number. In other words, 320 digit long is the maximum size irrespective of the input length.
So what would be the security issues in this case? Will it create a problem or is it okay? In this case is there any way that attacker can distinguish between various input size?