encrypted

Specifies whether the destination snapshots of the copied image should be encrypted. You can encrypt a copy of an unencrypted snapshot, but you cannot create an unencrypted copy of an encrypted snapshot. The default KMS key for Amazon EBS is used unless you specify a non-default Key Management Service (KMS) KMS key using KmsKeyId. For more information, see Use encryption with EBS-backed AMIs in the Amazon EC2 User Guide.