安裝與升級 > Upgrade Guide﹝升級指南﹞ > The Windchill Upgrade Procedure > Execute Final Upgrade Steps > Modify Encryption Default Post Upgrade
  
Modify Encryption Default Post Upgrade
After successful completion of the upgrade, PTC recommends that you modify the length of the encryption key used to protect sensitive information, from 128 bits to 256 bits. This change should be made immediately after the upgrade process.
For instructions on how to make this change, see Modify Encryption Key Length.