How to get keystore file from signed apk

Question

I have already signed my apk with default debug.keystore key.But unfortunately my system destroyed,Now I need to get the key store from the already signed apk.

to replace with old apk with new apk.

I have MD5,SHA fingerprints with.But i could make them as keystore to sign the apk.

Any suggestions would be appreciated.Thank you in advance.

Possible duplicate of [Android: I lost my android key store, what should I do?](http://stackoverflow.com/questions/4459719/android-i-lost-my-android-key-store-what-should-i-do) — Alok Gupta, Apr 01 '16 at 05:57

score 14 · Answer 1 · edited Feb 25 '18 at 17:39

14

unzip -p Name-of-apk.apk META-INF/CERT.RSA | keytool -printcert

is what I used.

It produces information such as the owner, issuer, serial number, valid through, certificate finger prints, signature algorithms and version.

edited Feb 25 '18 at 17:39

Sumit

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answered Aug 29 '17 at 12:23

Swagat Mali

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So If I use same information then I will get same keystore file? with same SHA? – Pratik Butani Jun 07 '18 at 08:35
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@PratikButani, hi. Could you figure out how ti use this information to generate a keystore file or sign an .apk file? – Ayaz Alifov Jul 13 '18 at 14:49
I have got the information . Now how to get it as key store – Biswajit Das Nov 13 '19 at 09:59

score 1 · Answer 2 · edited Jun 07 '18 at 07:09

1

First, unzip the APK and extract the file /META-INF/ANDROID_.RSA (this file may also be CERT.RSA, but there should only be one .RSA file).

Then issue this command:

keytool -printcert -file ANDROID_.RSA

You will get certificate fingerprints like this:

 MD5:  B3:4F:BE:07:AA:78:24:DC:CA:92:36:FF:AE:8C:17:DB
 SHA1: 16:59:E7:E3:0C:AA:7A:0D:F2:0D:05:20:12:A8:85:0B:32:C5:4F:68
 Signature algorithm name: SHA1withRSA

Then use the keytool again to print out all the aliases of your signing keystore:

keytool -list -keystore my-signing-key.keystore

You will get a list of aliases and their certificate fingerprint:

android_key, Jan 23, 2010, PrivateKeyEntry, Certificate fingerprint (MD5): B3:4F:BE:07:AA:78:24:DC:CA:92:36:FF:AE:8C:17:DB Voila! we can now determined the apk has been signed with this keystore, and with the alias 'android_key'.

Keytool is part of Java, so make sure your PATH has Java installation dir in it.

edited Jun 07 '18 at 07:09

Pratik Butani

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answered Apr 01 '16 at 05:59

Ashim Kansal

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i dont have keystore file with me,i have loosed it. cant perform this step: keytool -list -keystore my-signing-key.keystore You will get a list of aliases and their certificate fingerprint: – Hari Enaganti Apr 01 '16 at 06:02
Keytool is different from keystore. Keytool is used to create keystore file. – Ashim Kansal Apr 01 '16 at 07:55
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copied from azgolfer @ http://stackoverflow.com/questions/11331469/how-do-i-find-out-which-keystore-was-used-to-sign-an-app – Florent Aug 22 '16 at 12:09
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Thanq for the Solutions – Hari Enaganti Nov 28 '16 at 10:39
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do not share your sha1 – SARATH V May 17 '18 at 10:40

How to get keystore file from signed apk

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