[0:] Java.Lang.IllegalArgumentException: invalid date string: Unparseable date: "aha``aaaacdaGMT+00:00" (at offset 0)
  at Java.Interop.JniEnvironment+InstanceMethods.CallObjectMethod (Java.Interop.JniObjectReference instance, Java.Interop.JniMethodInfo method, Java.Interop.JniArgumentValue* args) [0x00069] in <034d4a9852dd45bea9353cc7776c99f0>:0 
  at Java.Interop.JniPeerMembers+JniInstanceMethods.InvokeVirtualObjectMethod (System.String encodedMember, Java.Interop.IJavaPeerable self, Java.Interop.JniArgumentValue* parameters) [0x0002a] in <034d4a9852dd45bea9353cc7776c99f0>:0 
  at Java.Security.KeyPairGenerator.GenerateKeyPair () [0x0000a] in <a10f61e70eeb434e952fef884856c199>:0 
  at Xamarin.Essentials.AndroidKeyStore.GetAsymmetricKeyPair () [0x000f2] in <230d0ea83c464f9180c0ddb04a444efe>:0 
  at Xamarin.Essentials.AndroidKeyStore.GetKey () [0x00034] in <230d0ea83c464f9180c0ddb04a444efe>:0 
  at Xamarin.Essentials.AndroidKeyStore.Encrypt (System.String data) [0x00000] in <230d0ea83c464f9180c0ddb04a444efe>:0 
  at Xamarin.Essentials.SecureStorage.PlatformSetAsync (System.String key, System.String data) [0x00014] in <230d0ea83c464f9180c0ddb04a444efe>:0 
  at Xamarin.Essentials.SecureStorage.SetAsync (System.String key, System.String value) [0x00021] in <230d0ea83c464f9180c0ddb04a444efe>:0 
  at MyProj.WelcomeViewModel+<SaveAuthInfo>d__5.MoveNext () [0x0001a] in C:\Source\Code\Tests\MyProj\MyProj\Views\WelcomePage.xaml.cs:84 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0003e] in <43dbbdc147f2482093d8409abb04c233>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in <43dbbdc147f2482093d8409abb04c233>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in <43dbbdc147f2482093d8409abb04c233>:0 
  at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in <43dbbdc147f2482093d8409abb04c233>:0 
  at MyProj.WelcomeViewModel+<Register>d__8.MoveNext () [0x001ec] in C:\Source\Code\Tests\MyProj\MyProj\Views\WelcomePage.xaml.cs:109 
  --- End of managed Java.Lang.IllegalArgumentException stack trace ---
java.lang.IllegalArgumentException: invalid date string: Unparseable date: "aha``aa`eeeiGMT+00:00" (at offset 0)
	at com.android.org.bouncycastle.asn1.DERUTCTime.<init>(DERUTCTime.java:98)
	at com.android.org.bouncycastle.asn1.x509.Time.<init>(Time.java:62)
	at com.android.org.bouncycastle.x509.X509V3CertificateGenerator.setNotBefore(X509V3CertificateGenerator.java:112)
	at android.security.AndroidKeyPairGenerator.generateKeyPair(AndroidKeyPairGenerator.java:127)
	at java.security.KeyPairGenerator$KeyPairGeneratorImpl.generateKeyPair(KeyPairGenerator.java:276)
	at mono.java.lang.RunnableImplementor.n_run(Native Method)
	at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:30)
	at android.os.Handler.handleCallback(Handler.java:815)
	at android.os.Handler.dispatchMessage(Handler.java:104)
	at android.os.Looper.loop(Looper.java:194)
	at android.app.ActivityThread.main(ActivityThread.java:5668)
	at java.lang.reflect.Method.invoke(Native Method)
	at java.lang.reflect.Method.invoke(Method.java:372)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:963)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:758)