# CdnPublicKey

Public key to use **only** during handshakes to [CDN](/cdn.md) DCs.

```tl
cdnPublicKey#c982eaba dc_id:int public_key:string = CdnPublicKey;
```

### Constructors

| Constructor | Description |
| --- | --- |
| [cdnPublicKey](/constructor/cdnPublicKey.md) | Public key to use **only** during handshakes to [CDN](/cdn.md) DCs. |

### Related pages

#### [Encrypted CDNs for Speed and Security](/cdn.md)
How client apps download popular public files from secondary CDN data cente