Improve detection of configure PIN code.

libraries/cryptography/test/build.gradle.kts

@@ -16,4 +16,5 @@ android {
 
 dependencies {
     api(projects.libraries.cryptography.api)
+    implementation(libs.coroutines.core)
 }

libraries/cryptography/test/src/main/kotlin/io/element/android/libraries/cryptography/test/SimpleSecretKeyRepository.kt

@@ -10,20 +10,39 @@ package io.element.android.libraries.cryptography.test
 
 import io.element.android.libraries.cryptography.api.AESEncryptionSpecs
 import io.element.android.libraries.cryptography.api.SecretKeyRepository
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import java.util.concurrent.ConcurrentHashMap
 import javax.crypto.KeyGenerator
 import javax.crypto.SecretKey
 
 class SimpleSecretKeyRepository : SecretKeyRepository {
     private var secretKeyForAlias = HashMap<String, SecretKey>()
 
-    override fun getOrCreateKey(alias: String, requiresUserAuthentication: Boolean): SecretKey {
+    private val hasKeyMap = ConcurrentHashMap<String, MutableStateFlow<Boolean>>()
+
+    override fun hasKey(alias: String): Flow<Boolean> {
+        return hasKeyMap.getOrPut(alias) {
+            MutableStateFlow(false)
+        }.asStateFlow()
+    }
+
+    override suspend fun getOrCreateKey(alias: String, requiresUserAuthentication: Boolean): SecretKey {
         return secretKeyForAlias.getOrPut(alias) {
-            generateKey()
+            generateKey().also {
+                hasKeyMap.getOrPut(alias) {
+                    MutableStateFlow(true)
+                }.emit(true)
+            }
         }
     }
 
-    override fun deleteKey(alias: String) {
+    override suspend fun deleteKey(alias: String) {
         secretKeyForAlias.remove(alias)
+        hasKeyMap.getOrPut(alias) {
+            MutableStateFlow(false)
+        }.emit(false)
     }
 
     private fun generateKey(): SecretKey {