To Restore Encrypted Database in Another Instan

--first create a master key use master create master key encryption by password = '[password]'

--then create a certificate using the backups of source certificate and key create certificate newcertificatename from file = 'path\filename.cer'
with private key (file = 'path\filename.key', decryption by password = '[password]')

--now you can restore the database from the backup normally