How would you add salt to your existing password hashes?

Question

I have a database of hashed passwords that had no salt added before they were hashed. I want to add salt to new passwords. Obviously I can\'t re-hash the existing ones.

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Answer 1

The best way I store my salt is that I embed the salt value within the password hash + salt I have just created. I don't append the salt string to the beginning or end of the hash, I literally embed the salt into the hash.