Hot answers tagged salt
If you have plenty entropy in your "seed" then just use a KBKDF such as HKDF. If you have somewhat less, use a PBKDF such as PBKDF2. Both HKDF and PBKDF2 can take a salt as input parameter and are already using a HMAC internally. There is no need to perform a HMAC beforehand. If you do, you would have to specify what data is used as key for the HMAC ...
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