# APK signing advice

**URL:** <https://discourse.processing.org/t/apk-signing-advice/1935>\
**Category:** Processing for Android\
**Created:** [July 20, 2018, 2:40pm UTC](https://discourse.processing.org/t/apk-signing-advice/1935 "2018-07-20T14:40:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![shedMusic](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/shedmusic/32/601_2.png) [@shedMusic](https://discourse.processing.org/u/shedMusic)\
**Post date:** [July 20, 2018, 2:40pm UTC](https://discourse.processing.org/t/apk-signing-advice/1935/1 "2018-07-20T14:40:08Z")

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Just trying to figure out options for apk signing. Should I have different keys for different apps?

The way this seems to be set up is to ask to create a keystore the first time round and then after that to just enter the password. This if fine for one app, but if I then want to sign another app should I just use the same password as for the first app or should I reset to create a new one. The problem is then how to go about selecting the different keys? Would using the same key for signing be an issue if I was putting the various apk’s up onto the PlayStore?

A keystore, from my understanding, can contain multiple keys… but Processing just seems to allow access to one only?

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**Author:** ![akenaton](https://avatars.discourse-cdn.com/v4/letter/a/a88e4f/32.png) [@akenaton](https://discourse.processing.org/u/akenaton)\
**Post date:** [July 21, 2018, 9:45am UTC](https://discourse.processing.org/t/apk-signing-advice/1935/2 "2018-07-21T09:45:07Z")

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@shedMusic===

you can always use the same key for signing your apps && playStore agrees with that…

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**Author:** ![shedMusic](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/shedmusic/32/601_2.png) [@shedMusic](https://discourse.processing.org/u/shedMusic)\
**Post date:** [July 21, 2018, 10:07am UTC](https://discourse.processing.org/t/apk-signing-advice/1935/3 "2018-07-21T10:07:44Z")

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@akenaton

Thanks, I thought it would ok for that.  
Any idea how to make use if an already existing key in Processing … that was generated from another IDE