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Is there any way how to retrieve app signature from APK? I signed it with my key from keystore and is there way, how to retrieve it ?

Ankit Aranya
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  • You can trivially retrieve the *signature* as that is an essential step to verifying it, however, you cannot retrieve the *key* - if you could, the whole exercise of signing it would be pointless. – Chris Stratton May 14 '14 at 14:36
  • This question has been answered here --> http://stackoverflow.com/questions/5578871/how-to-get-app-signature – Jaime A. García Jan 07 '16 at 19:04

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AFAIK, there is no way to retrieve signature but for educational purpose you can perform reverse engineering on existing apk and generate apk by applying new signature.

Mehul Joisar
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  • I want to make some changes and upload it on google play for use if i change the certificate it create any problem ? – Ankit Aranya May 14 '14 at 14:18
  • if owner of existing app come to know about it,he/she can sue you for this and also google may deactivate your account if he/she apply for justice.simple :-) – Mehul Joisar May 14 '14 at 14:22