KeyStoreException: User authentication required

[hvge]

This is a report from the customer from their developer console:

Exception java.security.ProviderException: Failed to generate key pair 
  at android.security.keystore.AndroidKeyStoreKeyPairGeneratorSpi.generateKeystoreKeyPair (AndroidKeyStoreKeyPairGeneratorSpi.java:514) 
  at android.security.keystore.AndroidKeyStoreKeyPairGeneratorSpi.generateKeyPair (AndroidKeyStoreKeyPairGeneratorSpi.java:470) 
  at java.security.KeyPairGenerator$Delegate.generateKeyPair (KeyPairGenerator.java:727) 
  at io.getlime.security.powerauth.biometry.impl.BiometricKeyEncryptorRsa.createRsaEncryptor (BiometricKeyEncryptorRsa.java:9) 
  at io.getlime.security.powerauth.biometry.impl.BiometricKeystore.createBiometricKeyEncryptor (BiometricKeystore.java:3) 
  at io.getlime.security.powerauth.biometry.impl.DefaultBiometricKeyEncryptorProvider.getBiometricKeyEncryptor (DefaultBiometricKeyEncryptorProvider.java:3) 
  at io.getlime.security.powerauth.biometry.BiometricAuthentication$2.run (BiometricAuthentication.java:1)
  at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1167) 
  at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:641) 
  at java.lang.Thread.run (Thread.java:919) 
Caused by android.security.KeyStoreException: User authentication required
  at android.security.KeyStore.getKeyStoreException (KeyStore.java:1275)

Device: Xiaomi Redmi Note 8Pro, Android 10

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It looks like the user has no PIN/pattern set to unlock the phone, so attempt to create the key protected with the biometry fails. I guess that we can improve this and detect such situation before we try to create such key with the KeyStore.