![]() For example, if we are trying to infer someones password given its hash, we could try common english words and phrases, as well as various combinations of data someone might use as an easy-to-remember password such as dates or names of people. Since storing the hash for all possible inputs is quite infeasible, a key component of dictionary attacks is to guess the likely inputs. Then, given a hash, we can look it up in our database, and find the matching input. We simply store for each possible input the corresponding hash. Dictionary AttacksÄictionary attack is the simplest form of attack possible on a hash function. Another common attack on hash functions is the birthday attack, which is discussed in this article. For example, an attacker can be trying to reconstruct the password given its hash. These attacks aim to find the input given the hash. ![]() In this article, we will look at some possible attacks on hash functions - dictionary attack and rainbow table attacks.
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