Does a unique salt have to be kept secret from the password database?
No. A salt prevents identical passwords from producing the same stored result and can accompany the hash. Keep actual passwords and any optional pepper secret.
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More FAQs in How should user passwords be stored in a database?
Ordinary login does not require recovering a password. Use adaptive hashing for verification and provide a secure reset flow instead of storing a recoverable original value.
Return only the profile fields required by the interface, such as the display name and permitted account details. Exclude password hashes and authentication secrets from responses.
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