Validate decryption key length to decrypt function. am: 379b672b18 am: 66cbab1f13 am: 302d2e5cd4 am: ec57d22876 am: 5c338b682d
am: 2616f56718

Change-Id: I3526b1c3f2a54e63dc6c0affe9caa960de3bdd2a