Kryptographer 
Gradle Setup
In your project level build.gradle
allprojects {
repositories {
maven { url 'https://jitpack.io' }
}
}In your app level build.gradle
dependencies {
implementation 'com.sonhvp:kryptographer:0.5.0'
}By default, library uses asymmetric key with RSA/ECB/PKCS1Padding and symmetric key with AES/CBC/PKCS7Padding to encrypt/decrypt data.
| API 19+ | API 23+ |
|---|---|
| Asymmetric Key (2048 bits) | Symmetric Key (256 bits) |
| RSA/ECB/PKCS1Padding | AES/CBC/PKCS7Padding |
Basic Usage
Initialize in your Application.onCreate() method
class App : Application() {
override fun onCreate() {
super.onCreate()
Kryptographer.initWithDefaultKeys(this@App)
}
}class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val text = "123$%^{}@abc"
val encryptedText = Kryptographer.defaultSymmetricKey().encrypt(text)
val decryptedText = Kryptographer.defaultSymmetricKey().decrypt(encryptedText)
}
}Advanced Usage
class App : Application() {
override fun onCreate() {
super.onCreate()
Kryptographer.init(this@App)
Kryptographer.initKeys(
this@App,
asymmetricKey {
alias = "MyAsymmetricKey"
keySize = 1024
},
symmetricKey {
alias = "MySymmetricKey"
keySize = 128
}
)
}
}class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val text = "123$%^{}@abc"
val encryptedText = Kryptographer.getKey("MyAsymmetricKey").encrypt(text)
val decryptedText = Kryptographer.getKey("MyAsymmetricKey").decrypt(encryptedText)
}
}//Get key aliases
val keyAliases = Kryptographer.getKeyAliases()
//Delete key
Kryptographer.deleteAllKeys()
Kryptographer.deleteKey("alias")
//Check if the key resides inside secure hardware
Kryptographer.getKey("MyAsymmetricKey).isInsideSecureHardware()License
Copyright 2019 Son Huynh. Licensed under the Apache License, Version 2.0