ShortId creates amazingly short non-sequential url-friendly unique ids. Instead, consider using safer alternatives… SHA-2, or the newer SHA-3! Perfect for url shorteners, MongoDB and Redis ids, and any other id users might see. GIT_DIR or GIT_WORK_TREE, but not GIT_EDITOR). Answer: Google announced the first SHA1 collision on February 23, 2017 Check this website for more details: Announcing the first SHA1 collision This requires a lot of computing power and resources. If we weren't worried about sha1 collisions in git then we wouldn't switch to a new hash function. "The quick summary if you do not want to read this entire post is that the problem is really not that bad. See Jeff Run: August 2009 - Blogger Created by Jack O'Connor, Jean-Philippe Aumasson, Samuel Neves, and Zooko Wilcox-O'Hearn, BLAKE3 combines general purpose [PATCH] scripts/setlocalversion: make git describe output more reliable Scott Chacon (Author of Pro Git) - Goodreads MurmurHash3 collision property · Issue #58 · aappleby/smhasher - GitHub I don't have a source for this, but I've heard (in the context of git) that the probability of two different files having the same sha1sum is about the same as the probability of every . We will use the hash code generated by JVM in our hash function and compress the hash code we modulo (%) the hash code by the size of the hash table. Comparing the hash values for two inputs can give us one of two answers: the inputs are definitely not the same, or there is a possibility that they are the same. The problem with SHA-1 is the collision attack that way before the actual attack shattered.io NIST dropped it in 2011 from digital signatures since finding collision has catastrophic result in Digital Signatures. OJFord on Nov 30, 2016 . and therefore I thought it'd be interesting to find other short strings with the same hash values.
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