Answer by cmm for Can you find out how big the changes are by comparing two...
Hash does not always mean Cryptographic HashYou could construct a hash function specific to the purpose. Consider doing a byte-for-byte comparison of the files and incrementing the hash for each...
View ArticleAnswer by Graham for Can you find out how big the changes are by comparing...
You can, but then it isn't purely a hash function.Error correction codes are a type of hash function which not only allow some changes to a message to be detected, but also allow those changes to be...
View ArticleAnswer by solumnant for Can you find out how big the changes are by comparing...
Yes, but only for fuzzy hashes such as ssdeep https://ssdeep-project.github.io/ssdeep/index.html that are specifically designed to measure similarity between files, and hashes that only cover certain...
View ArticleAnswer by James Kirkby for Can you find out how big the changes are by...
A strong hash function should with a small change result in a big difference in output hash, that said if you want to check the difference between two values, you can use a hamming distance...
View ArticleAnswer by Ilmari Karonen for Can you find out how big the changes are by...
As the other answers have already noted, the answer is "no" for cryptographic hash functions. These are generally designed to behave as much like a perfectly random function as possible, and any...
View ArticleAnswer by kelalaka for Can you find out how big the changes are by comparing...
TL:DR;In Cryptographic hash functions; the hashes of any two distinct messages should appear statistically independent.$I realize that the hash is a one way function and that the changes in hash are...
View ArticleAnswer by user163495 for Can you find out how big the changes are by...
No, at least with a good hash function.You can test this yourself by creating a hash over a specific data set, and then a modified hash over a different data set. You will see that every bit of the...
View ArticleAnswer by schroeder for Can you find out how big the changes are by comparing...
I'm sure there is a hash type where this might be possible, but the point of a cryptographically secure hash is to make sure that doesn't happen. One should not be able to make any guesses or...
View ArticleCan you find out how big the changes are by comparing two hashes?
I realize that a hash function is a one way function, and that changes in the hash are suppose to tell us that the original data has changed (that the entire hash changes on even the slightest changes...
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