sp_encryption

The sp_encryption system procedure reports a new key type called "database encryption key" to show if a database is fully encrypted.
For example:
1> create encryption key key1 as default for database encryption
2> go
1> sp_encryption helpkey, key1 

Key Name    Key Owner    Key Length   Key Algorithm
    Key Type                            Pad    Initialization Vector
  Protected By     Key Recovery
     # of Key Copies
----------- ------------ ------------ -------------
    --------------------------------   ------ --------------------- 
  -------------- ----------------    -----------------
key1        dbo          256          AES              
    symmetric database encryption key      0                       1
  master key       0                            0
1> create encryption key key2 for database encryption with master key
2> create encryption key key3 for database encryption with dual_control
3> go
1> sp_encryption helpkey, 'key%'
Key Name    Key Owner    Key Length   Key Algorithm
    Key Type                            Pad    Initialization Vector
  Protected By     Key Recovery
     # of Key Copies
----------- ------------ ------------ -------------
    --------------------------------   ------ --------------------- 
  -------------- ----------------    -----------------
key1        dbo          256          AES              
    symmetric database encryption key      0                       1
  master key       0                            0
key2        dbo          256          AES              
    symmetric database encryption key      0                       1
  master key       0                            0
key3        dbo          256          AES              
    symmetric database encryption key      0                       1
  dual_control(master key + dual master key)  0                  0

1> create database encr_db1 encrypt with key1
2> create database encr_db2 encrypt with key2
3> create database encr_db3 encrypt with key3
4> go
1> sp_encryption helpkey, '%', "display_dbs"
Key Name Key Owner Encrypted Database
-------------------- --------------------------------------
key1 dbo encr_db1
key1 dbo encr_db2
key3 dbo encr_db3