Error
Error Code:
3236
MySQL Error 3236: Invalid KDF Iteration Value
Description
This error occurs when attempting to use the `pbkdf2_hmac` Key Derivation Function (KDF) with an iteration count that falls outside the permissible security range. MySQL enforces a minimum of 1000 and a maximum of 65535 iterations to ensure cryptographic strength. It signifies a misconfiguration in how KDF parameters are supplied, preventing the operation due to security concerns.
Error Message
For KDF method pbkdf2_hmac iterations value less than 1000 or more than 65535 is not allowed due to security reasons. Please provide iterations >= 1000 and iterations < 65535
Known Causes
4 known causesInvalid KDF Iterations Parameter
The iteration count for the `pbkdf2_hmac` KDF method was explicitly set to a value outside the required security range (1000 to 65535).
Outdated Client or Application
An older client library or application might be generating or requesting KDF iteration values that are no longer considered secure or are outside the range enforced by the current MySQL server version.
Manual Data Entry or Script Error
The error can occur if a script or manual SQL command attempts to create or update credentials using `pbkdf2_hmac` with an invalid iteration count.
Security Policy Enforcement
MySQL's built-in security policies prevent the use of weak KDF iteration counts to protect against brute-force attacks on derived keys.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service