You can apply [BuyDRM](https://www.buydrm.com/) KeyOS CPIX DRM to your output with our API. You should generate public and private keys in BuyDRM's KeyOS Console, and then just add them to your API request. ```xml [UserID] [UserKey] [Action] [SourceFile] [OutputFormat] [yes|no] [ContentID] [PrivateKey] [PublicKey] ``` ```json { "query": { "userid": "[UserID]", "userkey": "[UserKey]", "action": "[Action]", "source": "[SourceFile]", "format": { "output": "[OutputFormat]", "buydrm_cpix_drm": "[yes|no]", "buydrm_cpix_content_id": "[ContentID]", "buydrm_cpix_private_key": "[PrivateKey]", "buydrm_cpix_cert": "[PublicKey]" } } } ``` | Parameter | Description | Allowed Values | Default Value | | :----------------------------- | :---------------------- | :------------- | :------------ | | **buydrm\_cpix\_drm** | Enable BuyDRM CPIX KMS | yes, no | no | | **buydrm\_cpix\_content\_id** | BuyDRM CPIX Content ID | string | *none* | | **buydrm\_cpix\_private\_key** | BuyDRM CPIX Private Key | string | *none* | | **buydrm\_cpix\_cert** | BuyDRM CPIX Public Key | string | *none* | > 🚧 Note > > **BuyDRM** only works with [advanced multibitrate output](ref:advanced-mbr) formats.