After the Washington DC upgrade protected script includes not working

[Gopal Ware1]

After the Washington DC upgrade, the script includes with the protection policy set to "protected" are not working
I am getting following errors: 

Unable to decrypt protected script. KMFGlideEncrypter decryption failed com.glide.kmf.InvalidCryptoModuleOperationException: Could not fetch key information for symmetric_decryption
Unable to decrypt protected script: sys_script_include.c414bb5587481010f917e55936cb0b7f: com.glide.kmf.InvalidCryptoModuleOperationException: Could not fetch key information for symmetric_decryption: 	com.glide.kmf.KMFOutputBaseBuilder.getKMFOutputObject(KMFOutputBaseBuilder.java:141)

Caused by: Could not fetch key information for symmetric_decryption in null: no thrown error

[Mark Manders]

https://docs.servicenow.com/bundle/washingtondc-api-reference/page/app-store/dev_portal/API_referenc...

Did you see the changes done to the GlideEncrypter?

[Maik Skoddow · Accepted solution]

It's a know Problem (PRB1734388) and fixed in Patch 1. In KB1628704 ServiceNow recommends setting sn_kmf.protected_script_encrypter.use.newkey to "false".

[Gopal Ware1]

Please note that only 'maint' users have read/write permissions for this property; admin users do not have access to it. I raised a support ticket to resolve the issue, and it has been resolved through ServiceNow.