Android application system signature

1. Generate keystore signature file

1. Take platform.pk8 platform.x509.pem from the android source code directory build\target\product\security and put it in a directory

2. Generate shared.priv.pem

openssl pkcs8 -in platform.pk8 -inform DER -outform PEM -out shared.priv.pem -nocrypt

3. Generate pkcs12

openssl pkcs12 -export -in platform.x509.pem -inkey shared.priv.pem -out shared.pk12 -name androiddebugkey    

4. Generate debug.keystore

keytool -importkeystore -deststorepass android -destkeypass android -destkeystore debug.keystore -srckeystore shared.pk12 -srcstoretype PKCS12 -srcstorepass android -alias androiddebugkey

---

2. Application of keystore

1. Use of keystore in Android studio

signingConfigs{
    
    
  debug{
    
    
        keyAlias 'androiddebugkey'
        keyPassword 'android'
        storeFile file('debug.keystore')
        storePassword 'android'
    }
}
 
buildTypes{
    
     
    debug{
    
    
        minifyEnabledfalse
        signingConfig signingConfigs.debug
    }
}