Value of salt is that it prevents attacker from creating rainbow tables,

It may prevent them from compromising all the accounts quickly, but it certainly does not prevent them from targeting selected accounts.

If the have both the hash and the salt, it becomes a matter of cpu cycles, and with AWS and other selling those so cheaply, it is just a matter of how much they are prepared to spend.

Value of salt is that it prevents attacker from creating rainbow tables,

I fail to see why? If you've been compromised, you surely need to change all the pass-phrases. At which point you have to rehash anyway.

I'm not saying a constant secret salt is a perfect solution, just convenient and relatively safe if done properly.

But then, there is no "perfect solution".

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

The start of some sanity?

In reply to Re^3: SaltedDigest Salt? by BrowserUk
in thread SaltedDigest Salt? by packetstormer

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