[guardian-announce] Fwd: SQLCipher for Android 2.0.0-RC5

[News from the Guardian Project]

Hi,

Just wanted to share news of the latest release candidate regarding 
SQLCipher for Android.  Thanks!

-------- Original Message --------
Subject: 	SQLCipher for Android 2.0.0-RC5
Date: 	Tue, 3 Apr 2012 07:28:34 -0700 (PDT)
From: 	Nick Parker <nparker at zetetic.net>
Reply-To: 	sqlcipher at googlegroups.com
To: 	sqlcipher at googlegroups.com



Hi folks,

I just wanted to share the release of the latest release candidate for 
SQLCipher for Android.  The 2.0.0-RC5 build contains three important 
additions to the library.  With the inclusion of the new sqlcipher core 
that adds HMAC page protection a few additions were needed.  We have 
added a method called 
SQLiteDatabase.upgradeDatabaseFormatFromVersion1To2 which will migrate 
your 1.x database to the new 2.0 format.  Additionally, if you need to 
maintain the existing format but wish to use the new 2.0 library we have 
added a SQLiteDatabaseHook interface that can be provided to the 
SQLiteDatabase.openOrCreateDatabase call providing both preKey and 
postKey events.  As the name implies, if provided this callback will be 
triggered before and after the keying of the database.  The following 
example would allow you to open a 1.1 database using the 2.0 library.

SQLiteDatabaseHook hook = new SQLiteDatabaseHook(){
   public void preKey(SQLiteDatabase database){
     database.rawExecSQL("PRAGMA cipher_default_use_hmac = off");
   }
   public void postKey(SQLiteDatabase database){}
}

SQLiteDatabase database = 
SQLiteDatabase.openOrCreateDatabase(databasePath, password, null, hook);

Finally, there is an overload to SQLiteDatabase.loadLibs that allows you 
to pass a File which will be used as the location for extracting the ICU 
dat file if it is not present on the device (thanks jeffdcamp).  This is 
especially useful on devices with limited onboard storage, allowing you 
to move the ICU expansion to an SD card.  I have created a new binary 
package available below [1].  Please take a look, we welcome any 
feedback.  Thanks!

1. 
  https://github.com/downloads/sqlcipher/android-database-sqlcipher/SQLCipher%20for%20Android%202.0.0-RC5.zip

Nick Parker
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