at.favre.lib.armadillo

Class EncryptionFingerprintFactory

java.lang.Object

at.favre.lib.armadillo.EncryptionFingerprintFactory

public final class EncryptionFingerprintFactory
extends java.lang.Object

Factory for creating EncryptionFingerprintFactory in Android

Since:

19.12.2017

Method Summary

Modifier and Type

Method and Description

static EncryptionFingerprint

create(android.content.Context context, java.lang.String additionalData) Creates a new EncryptionFingerprint including the following data: Fingerprint of the APK signature Android ID: a 8 byte random value on SDK 26 and higher, unique to each combination of app-signing key, user, and device - on SDK 25 and lower only unique to user and device Application package name, Brand, model and name of the device 32 byte hardcoded static random value

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

create

public static EncryptionFingerprint create(android.content.Context context,
                                           java.lang.String additionalData)

Creates a new EncryptionFingerprint including the following data:

• Fingerprint of the APK signature
• Android ID: a 8 byte random value on SDK 26 and higher, unique to each combination of app-signing key, user, and device - on SDK 25 and lower only unique to user and device
• Application package name, Brand, model and name of the device
• 32 byte hardcoded static random value

It is recommended to provide additional data unique to your domain (e.g. userId, api version, etc).

Note: If the fingerprint changes the data cannot be decrypted anymore.

Parameters:

context - used to gather data from the Android framework

additionalData - additional data provided by the caller

Returns:

fingerprint