Cannot load libs

[pligor]

When executing this line:
SQLiteDatabase.loadLibs(this)
I get these errors and the program terminates abruptly:
13578 dalvikvm E ERROR: couldn't find native method
13578 dalvikvm E Requested: Lnet/sqlcipher/database/SQLiteDatabase;.native_getDbLookaside:()I
13578 JNIHelp E RegisterNatives failed for 'net/sqlcipher/database/SQLiteDatabase', aborting

Note that I am using proguard and I have used this config especially for SQLiteCipher:
-keep public class info.guardianproject.database.** { *; }
also have included (with -libraryjars) all related jars: guava-r09.jar, commons-codec.jar, sqlcipher.jar

What is the issue? Why does it fail?

[developernotes]

Hi pligor,

The error is related to the bundling of the native .so files required for using SQLCipher for Android, and not the stripping process that occurs when running ProGuard. Please verify that your application is correctly including the native .so libraries within the armeabi or x86 folders of your libs directory. Also, do not forget to include the icudt46l.zip file within your assets folder.

[pligor]

I have already done a similar procedure with another library (in another project) and everything worked well. I have already included all the necessary files you mentioned. Do I need to delete the previous database? I have not done any database calls yet. I am stuck with SQLiteDatabase.loadLibs(this)... Note that the project I am testing is a testing project, very light, with no other dependecies to interfere. Maybe you could provide a link to download a sample project and start from there? Thank you!

[developernotes]

Hi pligor,

There are few additional steps you can take to narrow down your issue. First, there is a tool called apktool that you can use to disassemble your compiled apk file to verify what native libraries your application is bundling. Also, as a reference you can download, run and compare the sqlcipher-android-test project with your own project configuration.

[pligor]

Hi there! Thanks for helping. Using the apktool I can confirm that all six .so files are included in the two folders armeabi and x86 inside the final .apk file. I am still scratching my head. Maybe instead of executing SQLiteDatabase.loadLibs(this) I could execute manually this command System.loadLibrary("LIBRARY_NAME_INSIDE_HERE") several times to load all the necessary libraries ? I would need the string of each library's name of course

[developernotes]

Hi pligor,

As a quick test, could you disable ProGuard during your build and see if you continue to receive the error?

[pligor]

Ok I did this quick test on an old java-android app of mine which had no proguard and the line doesn't seem to crash the application.
My situation is a little bit more particular because I am now developing on android using sbt and Scala instead of java. Although I do not consider this is the cause of the issue because I have loaded other libraries on scala and all worked fine.
Furthermore for two reasons the size of my project and the fact that I am using scala forces me to use proguard. You are welcome if you have any more ideas. Furthermore my email is this: george@pligor.com
Please contact me at my email directly so I could send you a zipped file with the sample project: A hello world scala-android app I just created for the purpose of this testing. This app fails to load after following step-by-step all the instructions from your documentation. Thank you once more!

[developernotes]

Hi pligor,

With your comment above regarding your ProGuard statement, you stated that you were using info.guardianproject.database.** { *; }, however the package name for the current library has changed and thus would need to be net.sqlcipher.database.** { *; }. Are you using the latest version of the library? With regard to a sample project, we would prefer that you publish a sample via GitHub with an open source license in order for us to evaluate it. Let us know if that will work. Thanks!

[pligor]

Yes you are correct. My first comment contains this error. This is one of the first things I corrected. I even tried to include the entire library like that net.sqlcipher.** but nothing changed. I have tried a lot of different things and nothing succeeded. Ok I have no problem. I will upload this sample project on github and I will let you know of the link

[pligor]

This is the link with the project: https://github.com/pligor/sqliteciphertester
I hope you could fix it soon enough. Until then I will have to figure out other ways to ensure the required security in my mobile app. Thank you

[developernotes]

Hi pligor,

I stand corrected, the issue was with ProGuard. You need to add the following so it doesn't skip non-public library class members, as it was trying to find lastChangeCount on the SQLiteDatabase which was being stripped. I placed it below the keep for net.sqlcipher... in Build.scala.

          |-keep class net.sqlcipher.** {*;}
          |-dontskipnonpubliclibraryclassmembers