Merge pull request #5 from contentpass/decrypt-failure-to-unauthenticated

Add catching of decryption exceptions

Author: pumapaul

README.md

@@ -14,7 +14,7 @@
 Our SDK is available on Maven Central.
 
 ```groovy
-implementation 'de.contentpass:contentpass-android:2.0.0'
+implementation 'de.contentpass:contentpass-android:2.0.1'
 ```
 
 Add this to your app's `build.gradle` file's `dependencies` element.

lib/build.gradle.kts

@@ -58,7 +58,7 @@ kapt {
 extra.apply{
     set("PUBLISH_GROUP_ID", "de.contentpass")
     set("PUBLISH_ARTIFACT_ID", "contentpass-android")
-    set("PUBLISH_VERSION", "2.0.0")
+    set("PUBLISH_VERSION", "2.0.1")
 }
 
 apply("${rootProject.projectDir}/scripts/publish-module.gradle")

lib/src/main/java/de/contentpass/lib/TokenStore.kt

@@ -19,8 +19,12 @@ internal class TokenStore(context: Context, private val keyStore: KeyStore) : To
     override fun retrieveAuthState(): AuthState? {
         return sharedPreferences.getString(tokenKey, null)?.let { token ->
             return retrieveIV()?.let { iv ->
-                val decrypted = decrypt(token.decoded(), iv)
-                AuthState.jsonDeserialize(decrypted.encoded())
+                try {
+                    val decrypted = decrypt(token.decoded(), iv)
+                    AuthState.jsonDeserialize(decrypted.encoded())
+                } catch (e: Throwable) {
+                    null
+                }
             }
         }
     }