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Web Application Security » Blog Archives » SHA-512 w/ per User Salts is Not Enough
Why use per user salts at all? Two reasons, first per user salts ensure that two users with the same password will not have the same hash. Second, the use of salts prevents an attacker from using a precomputed rainbow table against the hashes.
database  security  hash 
may 2011 by cjitlal

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