Why not just use a query to join the relevant catalogs and produce the cert and encryption key info in use

SELECTdek.create_date
, dek.regenerate_date
, dek.modify_date
, dek.set_date
, dek.opened_date
, dek.key_algorithm
, dek.key_length
, dek.encryptor_type
, dek.encryptor_thumbprint
, c.[name]
, c.[subject]
, c.[start_date]
, c.[expiry_date]
FROM sys.dm_database_encryption_keys dek
INNER JOIN master.sys.certificates c
ON dek.encryptor_thumbprint = c.thumbprint
WHERE database_id = db_id()