How do I export my game (signed release apk, keystore not working)?

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- CGamez
- - Joined 14 Oct, 2013
  - 38 topics • 119 posts
- 1
- 17 Mar, 2020
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Hello,

I'm trying to export my new game as a signed release apk with the C3 build service. (exporting as a debug apk works fine)

I've created a keystore using C3.

But if I use the keystore now (alias = key name, passwords also correct, checked it 3 times...) the buildservice crashes and says something like incorrect keystore...

I already have a published app and there everything went fine with the C3 keystore generation and C3 signed apk build.

Here is the full error-log:

Error: Failed to load signer "signer #1" java.io.IOException: Failed to obtain key with alias "production" from tmp/bb2baa0a-350a-4e32-9edd-ef3e9ce28258. Wrong password? at com.android.apksigner.ApkSignerTool$SignerParams.loadPrivateKeyAndCertsFromKeyStore(ApkSignerTool.java:690) at com.android.apksigner.ApkSignerTool$SignerParams.loadPrivateKeyAndCerts(ApkSignerTool.java:555) at com.android.apksigner.ApkSignerTool$SignerParams.access$200(ApkSignerTool.java:509) at com.android.apksigner.ApkSignerTool.sign(ApkSignerTool.java:215) at com.android.apksigner.ApkSignerTool.main(ApkSignerTool.java:89) Caused by: java.security.UnrecoverableKeyException: Get Key failed: Given final block not properly padded. Such issues can arise if a bad key is used during decryption. at sun.security.pkcs12.PKCS12KeyStore.engineGetKey(PKCS12KeyStore.java:435) at sun.security.provider.KeyStoreDelegator.engineGetKey(KeyStoreDelegator.java:96) at sun.security.provider.JavaKeyStore$DualFormatJKS.engineGetKey(JavaKeyStore.java:70) at java.security.KeyStore.getKey(KeyStore.java:1023) at com.android.apksigner.ApkSignerTool$SignerParams.loadPrivateKeyAndCertsFromKeyStore(ApkSignerTool.java:663) ... 4 more Caused by: javax.crypto.BadPaddingException: Given final block not properly padded. Such issues can arise if a bad key is used during decryption. at com.sun.crypto.provider.CipherCore.unpad(CipherCore.java:975) at com.sun.crypto.provider.CipherCore.fillOutputBuffer(CipherCore.java:1056) at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:853) at com.sun.crypto.provider.PKCS12PBECipherCore.implDoFinal(PKCS12PBECipherCore.java:405) at com.sun.crypto.provider.PKCS12PBECipherCore$PBEWithSHA1AndDESede.engineDoFinal(PKCS12PBECipherCore.java:437) at javax.crypto.Cipher.doFinal(Cipher.java:2164) at sun.security.pkcs12.PKCS12KeyStore.engineGetKey(PKCS12KeyStore.java:371) ... 8 more
Tagged:

keystore
- CGamez
- - Joined 14 Oct, 2013
  - 38 topics • 119 posts
- 1
- 17 Mar, 2020
- Quote
Just another information:

I now used the keystore from my first app (which is already published) and now it works...

Just the question:

Can I use the same keystore for 2 apps?

Thanks!
- Lancifer
- - Joined 30 Nov, 2015
  - 0 topics • 378 posts
- 2
- 17 Mar, 2020
- Quote
Yes, you can use the same keystore for multiple apps.

Google actually recommends it.
- CGamez
- - Joined 14 Oct, 2013
  - 38 topics • 119 posts
- 1
- 17 Mar, 2020
- Quote
Thanks!

Anyone an idea why it didn't work with a second keystore? Or can you only create 1?
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- Damino
- - Joined 23 Sep, 2013
  - 3 topics • 24 posts
- 1
- 24 Mar, 2020
- Quote
Hi guys, I have the same situation. I tried to create a new keystore for a new project and it don´t worked. But, since I was read this tread, I´m using the keystore of my first project and it works well. I don't remember the tutorial very well, but I thought I could create a keystore for each project.

Now I can continue with development.

Regards!
- RayKi
- - Joined 25 Feb, 2014
  - 32 topics • 282 posts
- 1
- 29 May, 2020
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I was getting the same problem and ended up in this post. If anyone else shows up here to solve this you have to put the same password on all four fields. So Keystore and key password must match.
- ailingforale
- - Joined 9 Feb, 2016
  - 7 topics • 24 posts
- 1
- 12 Jun, 2020
- Quote
I was getting the same problem and ended up in this post. If anyone else shows up here to solve this you have to put the same password on all four fields. So Keystore and key password must match.

Yes, this seemed to be my problem as well. I'm not sure why the passwords need to be the same for both, but this fixed me from having the "Failed to load signer" issue.