Is it possible to encrypt the whole database? I'm currently using AES 256 ECB encryption for field level encryption. I need to know if there is any good option for encrypting the whole database.
Maybe this is what you are looking for:
SQLCipher is an SQLite extension that provides transparent 256-bit AES
encryption of database files.
Source: Android database encryption
You can also encrypt database with different available standard library.
we used below library it works very good..
One of them is : https://github.com/sqlcipher/sqlcipher
For Specific to Android : https://github.com/sqlcipher/android-database-sqlcipher
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I am using room library to store my data, and my restriction is i cannot have api level below 22.
Now I am having an attribute which i have to encrypt as this is having some sensitive data.
I have successfully implemented encryption on simple strings but in room we are storing a list directly into database.
Till now i have tried AES and RSA both on a simple string.
Is there any approach available by which without creating extra objects i can encrypt my whole attribute in db.
PS: SQLCipher is a heavy call hence i am not using that too.
You can Use SQLCipher. Its supports Room Database. Check Below Link.
SQLCipher for Android has a SupportFactory class in the net.sqlcipher.database package that can be used to configure Room to use SQLCipher for Android.
Using SQLCipher for Android With Room
CWAC-SafeRoom is good library and now support AndroidX.
CWAC-SafeRoom
I need to encrypt some of the data stored in my Android SQLite database, and I wonder what my options are if i want a lightweight option? Is SQLCipher still the best if speed is priority?
IMHO, SQLCipher is still an optimal solution. It provides AES 256 bit encryption which is pretty good.
I'm planning to store hashed passwords and PINs using realm. I've been researching on salting, and it's recommended to have a different salt for each password / PIN. Also it's recommended that the salt should be somewhere within the database.
My question is are .realm files secure? Is there a way to guarantee that the contents of the .realm files cannot be opened?
In general you can get the the realm file from the phone (if it rooted) and read it via realm browser (https://github.com/realm/realm-browser-osx). But there are possibility to encrypt the *.realm file. Look at the corresponding section of the documentation https://realm.io/docs/java/latest/#encryption .
Realm files aren't encrypted by default, however realm does support encryption of the files.
You can view the encryption documentation here, and an example implementation here.
You should also read up on the Android keystore, which will allow you to securely store the key.
I want to develop a simple encryption application for android. Which algorithm should I use to encrypt all data types such as images, office documents, multimedia, etc and why its a good one?
Does AES covers all types of data ?
AES can encrypt any data that can be represented as a sequence of bytes, so it can encrypt all types of data.
AES has been through a great deal of testing, and nobody has broken it yet. Pretty much every encryption library will include AES, including both Bouncy Castle and Spongy Castle for Android. AES is the standard and is your first choice, unless you have specific reasons for not using it.
Use it in either CBC mode with PKCS7 padding or CTR mode. Yes, if you don't know you will need to learn a bit about block cypher modes and cryptographic padding.
For authentication, if you require it, either use HMAC-SHA256 or GCM mode, which includes authentication.
Yes, I believe you can encrypt everything you want with AES. Just treat all data types as a stream of bytes. No problem here.
I'm creating a 2d game for Android and i'm using sqlite database for storing game data.Rooted users can change database easily.So i have to encrypt the data and when someone change it i have to understand this.How can i do this?
Take a look to the SQLCipher project. It is an open source library that provides transparent, secure 256-bit AES encryption of SQLite database files.
The web site offers a tutorial for Android.
SQLCipher + user's password could be the right implementation. We need user's password to encrypt the db rather than using the hard-coded strings.