The rskeymgmt utility can be found in the binn sub-directory
of your SQL Server install directory. On my local server, it resides in:
C:\Program Files (x86)\Microsoft SQL Server\110\Tools\Binn. Of course depending
on the install process, your location may be different. Opening the command
prompt and navigating to this directory, we can run rskeymgmt -?
Extract / Backup the Key
To "backup" or extract our key, we would issue the
following command: rskeymgmt.exe -e -f c:\tools\SSRS2012_key -p
WeAreSecureT0day -i SQL2012.
For this command we specify the location where the key
should be saved via the -f argument and a password for the key file via the -p
argument. Note when you use the -f argument, you must also specify a password
with the -p argument. As shown next, the key is extracted to the noted
location; you even get a warning to "SECURE THE FILE IN A SAFE
LOCATION".