# Questions about encryption policies

**URL:** <https://devforum.zoom.us/t/questions-about-encryption-policies/96758>\
**Category:** Feature Requests\
**Created:** [October 13, 2023, 7:22pm UTC](https://devforum.zoom.us/t/questions-about-encryption-policies/96758 "2023-10-13T19:22:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jonathan.ellen](https://avatars.discourse-cdn.com/v4/letter/j/9f8e36/32.png) [@jonathan.ellen](https://devforum.zoom.us/u/jonathan.ellen)\
**Post date:** [October 13, 2023, 7:22pm UTC](https://devforum.zoom.us/t/questions-about-encryption-policies/96758/1 "2023-10-13T19:22:32Z")

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I need answers to the following questions. Zoom phone and meetings is an integrated app in my instance of Salesforce. I am being asked by my customers about security risks. Here are my questions:

What are your allowable public-key or asymmetric encryption algorithms?

When symmetric encryption is used, do systems have the ability to change/update symmetric keys?

Are default vendor-defined keys changed to non-default values wherever possible such that the changed values are not known to the vendors?

Are symmetric keys used to encrypt backups protected?