Comment on BofA mails your PIN to the same address as the card it unlocksparentComments−Xk15yFrom that link:HMAC(K,m) = H((K ⊕ opad) ∥ H((K ⊕ ipad) ∥ m)).−iwwr15yWhy would HMAC be inappropriate in this case (of storing user credentials)? Is there a vulnerability?HMAC(key, password) instead of hash(password) or hash(salt+password)−Xk15yI don't know of any attack. However, my point is just that HMAC means using hashing for a message authentication code. Encrypting hashes makes more sense as to what's going on.
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From that link:
HMAC(K,m) = H((K ⊕ opad) ∥ H((K ⊕ ipad) ∥ m)).
Why would HMAC be inappropriate in this case (of storing user credentials)? Is there a vulnerability?
HMAC(key, password) instead of hash(password) or hash(salt+password)
I don't know of any attack. However, my point is just that HMAC means using hashing for a message authentication code. Encrypting hashes makes more sense as to what's going on.