# VOD AES encryption for delivery thru CDN

**URL:** <https://community.wowza.com/t/vod-aes-encryption-for-delivery-thru-cdn/50127>\
**Category:** Wowza Streaming Engine\
**Created:** [November 13, 2017, 1:26pm UTC](https://community.wowza.com/t/vod-aes-encryption-for-delivery-thru-cdn/50127 "2017-11-13T13:26:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Niksa\_Arneric](https://avatars.discourse-cdn.com/v4/letter/n/848f3c/32.png) [@Niksa\_Arneric](https://community.wowza.com/u/Niksa_Arneric)\
**Post date:** [November 13, 2017, 1:26pm UTC](https://community.wowza.com/t/vod-aes-encryption-for-delivery-thru-cdn/50127/1 "2017-11-13T13:26:19Z")

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Hi

we would like to encrypt our VOD files delivered thru HLS over CDN.

Because of caching mechanism we can’t use different AES-128 key for every client.

Is there way to add single encryption key for all files on Video on Demand HTTP Origin Wowza application?

Any help is welcome.