Flutter What is keystore file in apk build? - flutter

I tried to build new apk file of my app, but got error
What went wrong:
Execution failed for task ':app:validateSigningRelease'.
Keystore file not set for signing config release
previous version of my app that don't have purchases was build correctly but right now it's dosen't.
I found a lot informations how to set KeyStore file but nothing about what is it.
May you explain what is it

Basically Keystore is used to store private key and identity certificates that a specific program should present to both parties (server or client) for verification.
The Android Keystore system lets you store cryptographic keys in a container to make it more difficult to extract from the device. Once keys are in the keystore, they can be used for cryptographic operations with the key material remaining non-exportable. Moreover, it offers facilities to restrict when and how keys can be used, such as requiring user authentication for key use or restricting keys to be used only in certain cryptographic modes. See Security Features section for more information.
The Keystore system is used by the KeyChain API, introduced in Android 4.0 (API level 14); the Android Keystore provider feature, introduced in Android 4.3 (API level 18); and the Security library, available as part of Jetpack. This document goes over when and how to use the Android Keystore provider.
For details information please refer to this -
https://developer.android.com/training/articles/keystore

Related

What are the way to clean flutter project, I have tried all the below ways but having same issue and unable to upload in Play console

I am uploading with correct signin key, few time I cleaned with
flutter clean
From android studio - clean project
Invalidate Caches
Your Android App Bundle is signed with the wrong key. Ensure that your App Bundle is signed with the correct signing key and try again. Your app bundle is expected to be signed with the certificate with fingerprint:
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You're signing a newer release with a different key as in regards to an older one. There are only two fixes.
Either find your old keystore and sign this release with it too.
Or contact Playconsole in regards to a forgotten key and the new key that you want to use, this way you'll be able to upload this new one with this new key.

Huawei sign in failed with status code 28

Even though I used last sdk, Huawei sign failed with status code 28. What causes this error?
Error 6003 indicates that this fault is caused by an incorrect signing certificate fingerprint.
You could:
Ensure that the app’s certificate signature is the same as that configured in AppGallery Connect.
.Open the APK file of the app, extract the META-INF directory from the
file, obtain the CERT.RSA file in the directory, and run the keytool
-printcert -file META-INF/CERT.RSA command to display the signature certificate information.
.Check the SHA-256 certificate fingerprint configured in AppGallery
Connect by referring to Configuring the Signing Certificate
Fingerprint. If the information is the same as the preceding
information displayed, the certificate fingerprint is correct.
2.Ensure that the appid parameter in the manifest file is correct.
You can perform the check in either of the following ways: View the
parameter directly in the manifest file under the project. Decompile
the packaged APK file, and view the parameter. You can use any
decompliation tool for that.
Check whether the app is hardened or re-signed.
Check whether HUAWEI App Signing is enabled. According to the official document, if the service is enabled, the generated certificate fingerprint must be added in AppGallery Connect.
About Error Code 6003, you are advised to check whether the appid is the same as the appid on AppGalleryConnect.
Ensure that the certificate fingerprint has been configured, and the certificate for packing the signature on the local client is the same as the certificate for configuring the fingerprint in AppGallery Connect. And the JSON file is stored in the project-level directory instead of the application-level directory, check the following items configuration process carefully.
1.Check whether the fingerprint certificate is correctly configured when you apply for related services. Open the APK file of an app, extract the META-INF directory from the file, obtain the CERT.RSA file in the directory, and run the keytool -printcert -file META-INF/CERT.RSA command to print the signature certificate information.
2.HMS Core (APK) will cache the signature file. You need to find HMS Core (APK) on the Apps page of your device and clear its cache, restart your app, and perform the previous operation again.
3.Sign in to AppGallery Connect, click My apps. On the page that is displayed, go to Develop > Project settings > conventional, check whether SHA-256 certificate fingerprint is consistent with the fingerprint in step 1.

I can't figure out any other possible reason. can you help me?

When I integrate the HMS Core SDK into my app or game, result code 6003 is
always returned during an API call. The official document indicates that this fault is caused by an incorrect signing certificate fingerprint. But I have checked that the app's certificate signature is the same as that configured in AppGallery Connect.
Official document
Step 1: Ensure that the app's certificate signature is the same as that configured in AppGallery Connect.
Open the APK file of the app, extract the META-INF directory from the file, obtain the CERT.RSA file in the directory, and run the keytool -printcert -file META-INF/CERT.RSA command to display the signature certificate information.
Check the SHA-256 certificate fingerprint configured in AppGallery Connect by referring to Configuring the Signing Certificate Fingerprint. If the information is the same as the preceding information displayed, the certificate fingerprint is correct.
Step 2: Ensure that the appid parameter in the manifest file is correct.
You can perform the check in either of the following ways:
• View the parameter directly in the manifest file under the project.
• Decompile the packaged APK file, and view the parameter. You can use any decompliation tool for that.
Step 3: Check whether the app is hardened or re-signed.
Since AppGallery Connect does not re-sign an app currently, you need to locate the fault if your app has been hardened or re-signed by yourself.
Step 4: Check whether HUAWEI App Signing is enabled.
Huawei provides the App Signing service for developers to let Huawei host their app's signature key and use it for the APK file to be distributed.
According to the official document, if the service is enabled, the generated certificate fingerprint must be added in AppGallery Connect.

Eclipse automatic generate fingerprint sha1 for every android project?

i getting in started with the google drive api, and i'm following the tutorial at https://developers.google.com/drive/quickstart-android. I need to generate a fingerprint sha1, but i see in the preferences of eclipse (preferences > android > build) an existing fingerprint sha1, associated with my project. So i have some question in my mind:
Eclipse generate fingerprint sha1 for each project?
What's the function(s) of fingerprint sha1? Only for certification that i write the app?
Eclipse, by default, generates a key for debugging purposes and it's located on ~/.android/debug.keystore. Each Android app needs to be signed with a certificate to confirm authorship. Eclipse generates a keystore per user and signs the app's with the default cert from that keystore during development.

Code sign Error

I have created a new iPhone application.I have two mach machines. I have created the certificate for running application in iPhone in one mac. Can I use the other mac for running the application in iPhone. But when I try to do so I get an error "Codesign error:Code signing is required for product type "Application" in SDK Device iPhone OS 3.1.2. Please some one help me.
Regards,
krishnan.
Have you transferred your credentials to the second Mac? They are stored in your keychain.
You may need to read up on how Code-signing works: http://en.wikipedia.org/wiki/Code_signing
Here's an overview:
Developer creates a Certificate via a Certificate Authority (CA)
This certificate is used to 'sign' the binary, providing 'proof' of who created it
Developer then uses the Certificate to sign the binary (this is the step you're missing on the second MAC)
This is handled via xcode, assuming you've followed the detailed steps on http://developer.apple.com/iphone
Clients using the binary can now verify the Certificate against a known CA to ensure the integrity of the build.
Also check that you are code signing on the target as well when you do the Archive build
Spent hours to figure this out. Actually you need to click on Project --> Build Settings --> click target --> code sign..
THIS IS not apparent