From 792400240bdaa862bed2528df76dff08b3de1f7b Mon Sep 17 00:00:00 2001
From: 4f77616973 <0x4f@tuta.io>
Date: Tue, 27 Dec 2022 17:38:59 +0530
Subject: [PATCH] attempted fix for #23

---
 .../main/kotlin/cloud/keyspace/android/CryptoUtilities.kt  | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/app/src/main/kotlin/cloud/keyspace/android/CryptoUtilities.kt b/app/src/main/kotlin/cloud/keyspace/android/CryptoUtilities.kt
index b8cfe2b..c3f2bef 100644
--- a/app/src/main/kotlin/cloud/keyspace/android/CryptoUtilities.kt
+++ b/app/src/main/kotlin/cloud/keyspace/android/CryptoUtilities.kt
@@ -18,6 +18,7 @@ import androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL
 import androidx.biometric.BiometricManager.BIOMETRIC_SUCCESS
 import androidx.biometric.BiometricPrompt
 import androidx.core.content.ContextCompat
+import androidx.core.hardware.fingerprint.FingerprintManagerCompat
 import androidx.security.crypto.EncryptedSharedPreferences
 import androidx.security.crypto.MasterKey
 import cash.z.ecc.android.bip39.Mnemonics
@@ -529,7 +530,11 @@ class CryptoUtilities(
             }
 
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) { // Ask for authentication when loading keys, must be larger than 0
-                setUserAuthenticationParameters(DEFAULT_AUTHENTICATION_DELAY, KeyProperties.AUTH_DEVICE_CREDENTIAL or KeyProperties.AUTH_BIOMETRIC_STRONG)
+                if (FingerprintManagerCompat.from(context).isHardwareDetected && FingerprintManagerCompat.from(context).hasEnrolledFingerprints()) {
+                    setUserAuthenticationParameters(DEFAULT_AUTHENTICATION_DELAY, KeyProperties.AUTH_DEVICE_CREDENTIAL or KeyProperties.AUTH_BIOMETRIC_STRONG)
+                } else {
+                    setUserAuthenticationParameters(DEFAULT_AUTHENTICATION_DELAY, KeyProperties.AUTH_DEVICE_CREDENTIAL)
+                }
             } else {
                 setUserAuthenticationValidityDurationSeconds(DEFAULT_AUTHENTICATION_DELAY)
             }