This is why brcypt was created, to make rainbow table attacks more difficult. And if a salt is used then it's pretty computationally expensive as well as time expensive.
Remember boys and girls, always use bcrypt + salt for all your password hashing needs.
Remember boys and girls, always use bcrypt + salt for all your password hashing needs.
Actually, I believe this is outdated advice. My understanding of best practice is to use HMAC. Here's the link to a stack overflow question that I recently read: http://stackoverflow.com/questions/401656/secure-hash-and-salt-for-php-passwords/401684#401684
