# Hiding or encrypting SMTP password required in app.yml

**URL:** <https://meta.discourse.org/t/hiding-or-encrypting-smtp-password-required-in-app-yml/61505>\
**Category:** Self-hosting\
**Created:** [24. April 2017 um 16:29 UTC](https://meta.discourse.org/t/hiding-or-encrypting-smtp-password-required-in-app-yml/61505 "2017-04-24T16:29:12Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![elijah](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/elijah/32/104055_2.png) [@elijah](https://meta.discourse.org/u/elijah)\
**Post date:** [26. April 2017 um 21:43 UTC](https://meta.discourse.org/t/hiding-or-encrypting-smtp-password-required-in-app-yml/61505/6 "2017-04-26T21:43:20Z")

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I’ve seen this solved. But the solution is ugly (in the sense that I wouldn’t recommend it for a [standard install](https://meta.discourse.org/t/142537?silent=true)).

The trick: encryption key in a shared memory location, supplied at boot time by a human.

This was the recommended way to use a credit card number storage tool I worked with a few years ago.

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