How to decode a Hash

Question

If an attacker got access to user’s database and the passwords are stored in hashes, can the attacker decode that hashes? Can you suggest any tool by using we can decode the

Answer 1

No, you cannot decode hashes. A hash is a one-way (almost unique) representation of a piece of data. You could use rainbow tables, brute-force or dictionary attacks on the hashes to recover the unencrypted password.

http://en.wikipedia.org/wiki/Rainbow_table

http://en.wikipedia.org/wiki/Brute-force_attack

http://en.wikipedia.org/wiki/Dictionary_attack