# How do I specify the IV when using hls + aes128 with Wowza?

**URL:** <https://community.wowza.com/t/how-do-i-specify-the-iv-when-using-hls-aes128-with-wowza/92096>\
**Category:** Wowza Streaming Engine\
**Tags:** wowza-streaming-server-java-api, server-administration\
**Created:** [October 9, 2020, 5:55am UTC](https://community.wowza.com/t/how-do-i-specify-the-iv-when-using-hls-aes128-with-wowza/92096 "2020-10-09T05:55:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Yasuhiro\_Sekiguchi](https://avatars.discourse-cdn.com/v4/letter/y/4491bb/32.png) [@Yasuhiro\_Sekiguchi](https://community.wowza.com/u/Yasuhiro_Sekiguchi)\
**Post date:** [October 9, 2020, 5:55am UTC](https://community.wowza.com/t/how-do-i-specify-the-iv-when-using-hls-aes128-with-wowza/92096/1 "2020-10-09T05:55:33Z")

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How do I specify the IV when using hls + aes128 with Wowza?

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<div class="post-metadata">

**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\
**Post date:** [October 9, 2020, 7:20pm UTC](https://community.wowza.com/t/how-do-i-specify-the-iv-when-using-hls-aes128-with-wowza/92096/2 "2020-10-09T19:20:07Z")

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I think this is what you’re looking for: (scroll through this section of doc to find IV fields)

> **[Secure HLS streaming using DRM encryption](https://www.wowza.com/docs/how-to-secure-apple-hls-streaming-using-drm-encryption#key-file-fields)**
>
> Protect live and on-demand HLS streaming using DRM encryption in Wowza Streaming Engine.

 ![Screen Shot 2020-10-09 at 1.14.45 PM](https://us1.discourse-cdn.com/flex002/uploads/wowza1/original/1X/f8836b7f89666e2b0f583c5b5174dd9f523af8e2.png)