SSRS Key Mangement Options

C:\Program Files (x86)\Microsoft SQL Server\110\Tools\Binn>RSKeyMgmt /?
Microsoft (R) Reporting Services Key Manager
Version 11.0.2100.60 x86

Performs key management operations on a local report server.

  -e  extract           Extracts a key from a report server instance
  -a  apply             Applies a key to a report server instance
  -s  reencrypt         Generates a new key and reencrypts all encrypted
                        content
  -d  delete content    Deletes all encrypted content from a report server
                        database
  -l  list              Lists the report servers announced in the report server
                        database
  -r  installation ID   Remove the key for the specified installation ID
  -j  join              Join a remote instance of report server to the
                        scale-out deployment of the local instance
  -i  instance          Server instance to which operation is applied;
                        default is MSSQLSERVER
  -f  file              Full path and file name to read/write key.
  -p  password          Password used to encrypt or decrypt key.
  -m  machine name      Name of the remote machine to join to the
                        scale-out deployment
  -n  instance name     Name of the remote machine instance to join to the
                        scale-out deployment
  -u  user name         User name of an administrator on the machine to join to
                        the scale-out deployment.  If not supplied, the current
                        user is used.
  -v  password          Password of an administrator on the machine to join to
                        the scale-out deployment
  -t  trace             Include trace information in error message

To create a back-up copy of the report server encryption key:
RSKeyMgmt -e [-i <instance name>] -f  -p 

To restore a back-up copy of the report server encryption key:
RSKeyMgmt -a [-i <instance name>] -f  -p 

To reencrypt secure information using a new key:
RSKeyMgmt -s [-i <instance name>]

To reset the report server encryption key and delete all encrypted content:
RSKeyMgmt -d [-i <instance name>]

To list the announced report servers in the report server database:
RSKeyMgmt -l [-i <instance name>]

To remove a specific installation from a scale-out deployment:
RSKeyMgmt -r <installation ID> [-i <instance name>]

To join a remote machine to the same scale-out deployment as the local machine:
RSKeyMgmt -j [-i <local instance name>] -m <remote machine name>
          [-n <remote instance name>] [-u <user name> -v ]