wolfboys opened a new pull request, #4352:
URL: https://github.com/apache/streampark/pull/4352
### What changed
- Replace new password storage from salted SHA-256 to PBKDF2-HMAC-SHA256.
- Use 600,000 PBKDF2 iterations, 16-byte random salt, and a
self-describing password hash format.
- Keep legacy SHA-256 verification only for successful-login migration.
- Rehash legacy or lower-work-factor password hashes after successful
authentication.
- Update user create/update/reset flows to store PBKDF2 hashes.
- Expand `t_user.password` from `varchar(64)` to `varchar(255)` for PBKDF2
hash strings.
- Update seed user password hashes.
- Remove `ShaHashUtils` and keep legacy SHA-256 compatibility inside
`PasswordHashUtils`.
### Why
The previous password storage used fast SHA-256 hashing, which is not
appropriate for password storage and is vulnerable to offline brute-force
attacks if the password
database is leaked.
PBKDF2-HMAC-SHA256 is available from the JDK, avoids adding new
dependencies, and directly addresses the vulnerable password hashing behavior
with minimal code and
dependency changes.
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