Specifies the database encryption key.
-ek key
Provided after the file name of a strongly encrypted database. Requires the key value as an argument to start an encrypted database. The key value is a string, including mixed cases, numbers, letters, and special characters. If you have a strongly encrypted database, you must provide the encryption key to use the database or transaction log; if you do not, the command fails. For a strongly encrypted database, you must specify either -ek or -ep, but not both.