This is awesome sir. Would it affect performance?

On Tuesday, February 17, 2015 at 2:35:09 PM UTC-8, Jens Alfke wrote:
>
> The master branch of the couchbase-lite-ios repo now includes optional 
> on-disk database encryption. It uses SQLCipher (a variant of SQLite) to 
> encrypt the database file, while attachments are individually encrypted 
> with AES-256. Full instructions are on the wiki 
> <https://github.com/couchbase/couchbase-lite-ios/wiki/Database-Encryption>
> .
>
> This feature will be released in Couchbase Lite 1.1, but you can try it 
> out now by checking out and building from the master branch. (Please note 
> that the master branch already has other post-1.0.3 changes including an 
> incompatible 
> change to the file format 
> <https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/mobile-couchbase/Hj7nG8SkFdk/5I2KkIE-bQUJ>.)
>  
> We’d love to get feedback from you.
>
> It’s pretty easy to adopt if you also use the available 
> CBLEncryptionController class, which is a utility that runs the user 
> interaction to prompt for passwords. It will even use Touch ID, if 
> available, to store a randomly-generated AES key, so the user doesn’t need 
> a password at all. (I can say from experience that using your thumbprint to 
> unlock your app’s database is pretty cool. I’m storing all of my missile 
> launch codes and international money laundering paperwork in Couchbase Lite 
> now.)
>
> We don’t expect most developers to use this feature — the iOS filesystem 
> is already pretty well encrypted — but there are apps for which such 
> encryption is a requirement (often due to health-care or banking laws, or 
> corporate policies) so this feature has been a blocker for some people.
>
> (Yes, encryption is coming to our other platforms as well.)
>
> —Jens
>

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