The original SQLCipher for Android library (i..e, android-database-sqlcipher) was introduced in 2011. While we have continued to maintain and improve the original library over the years, there were features we and others wanted that were not easy to integrate within the existing library.
We introduced a long-term replacement API (i.e., sqlcipher-android) in 2022. This document aims to help highlight the specific changes necessary to transition to from the older android-database-sqlcipher to the new sqlcipher-android library.
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Below are the 3 main areas that will require adjustments within existing codebases to begin utilizing the new API.
Change the old AAR reference from:
implementation 'net.zetetic:android-database-sqlcipher:4.5.4@aar'
implementation 'androidx.sqlite:sqlite:2.2.0'
To the new AAR reference:
implementation 'net.zetetic:sqlcipher-android:4.7.2@aar'
implementation 'androidx.sqlite:sqlite:2.2.0'
Change the old AAR reference from:
implementation (name: 'android-database-sqlcipher-4.5.4', ext: 'aar')
implementation 'androidx.sqlite:sqlite:2.2.0'
To the new AAR reference:
implementation(name: 'sqlcipher-android-4.7.2', ext: 'aar')
implementation 'androidx.sqlite:sqlite:2.2.0'
The android-database-sqlcipher library stored the majority of classes within the net.sqlcipher and net.sqlcipher.database packages. Classes generally parallel between the two libraries, however, sqlcipher-android uses net.zetetic.database and net.zetetic.database.sqlcipher.
The native SQLCipher library must be loaded into memory prior to any database operation. The android-database-sqlcipher library used a static function to do this:
SQLiteDatabase.loadLibs(this);
Using sqlcipher-android, the library loading is simplified, which makes it easier to use alternative mechanisms for native library loading (e.g., SplitInstallHelper.loadLibrary).
System.loadLibrary("sqlcipher");
In android-database-sqlcipher, when using the static openOrCreateDatabase call to acquire a SQLiteDatabase instance, this version of the method accepted a DatabaseErrorHandler as the fifth argument:
SQLiteDatabase database = SQLiteDatabase.openOrCreateDatabase(databaseFile.getAbsolutePath(), "testkey", null, hook, null);
In sqlcipher-android, the DatabaseErrorHandler parameter moves to the fourth parameter:
SQLiteDatabase database = SQLiteDatabase.openOrCreateDatabase(databaseFile.getAbsolutePath(), "testkey", null, null, hook);
Coordinating operations that occur before and after the keying operation have changed slightly between the two API’s. Both libraries utilize an SQLiteDatabaseHook as a mechanism to inject operations into the pre and post-key operations. The type provided to the function for both preKey and postKey changed. android-database-sqlcipher would provide the instance of the SQLiteDatabase object, whereas sqlcipher-android provides the underlying SQLiteConnection object.
Both android-database-sqlcipher and sqlcipher-android support the Room persistence library API. In both cases, SQLCipher would integrate within the Room.databaseBuilder, specifically using the openHelperFactory(...). The android-database-sqlcipher library would provide an instance of the SupportFactory, whereas sqlcipher-android provides the SupportOpenHelperFactory.