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password hashing

Storing a password as a slow, salted fingerprint instead of the password itself.

Passwords are stored as the output of a deliberately slow, salted hash such as Argon2id, so a stolen database doesn't reveal them.

Examples

  • Argon2::default().hash_password(b"sunshine1") gives a string starting $argon2id$; hashing the same password twice gives different strings, because each gets a new salt.

See also

authentication hash function TLS
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