Refactor platform logic and add modular managers

Introduces modular internal managers for authentication, access control, and metadata on Android and iOS. Adds new files for Android (AuthenticationManager, AccessControlManager, MetadataManager and their implementations), and restructures iOS logic to use dependency injection and single-responsibility managers. Updates HybridSensitiveInfo on both platforms to delegate to these managers, improving maintainability and testability. Removes obsolete docs/REFACTORING_SUMMARY.md. Also updates dependencies in example and root package files.

Author: mCodex

CODE_OF_CONDUCT.md

@@ -0,0 +1,133 @@
+
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, caste, color, religion, or sexual
+identity and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the overall
+  community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or advances of
+  any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email address,
+  without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+[INSERT CONTACT METHOD].
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series of
+actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or permanent
+ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior, harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within the
+community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.1, available at
+[https://www.contributor-covenant.org/version/2/1/code_of_conduct.html][v2.1].
+
+Community Impact Guidelines were inspired by
+[Mozilla's code of conduct enforcement ladder][Mozilla CoC].
+
+For answers to common questions about this code of conduct, see the FAQ at
+[https://www.contributor-covenant.org/faq][FAQ]. Translations are available at
+[https://www.contributor-covenant.org/translations][translations].
+
+[homepage]: https://www.contributor-covenant.org
+[v2.1]: https://www.contributor-covenant.org/version/2/1/code_of_conduct.html
+[Mozilla CoC]: https://github.com/mozilla/diversity
+[FAQ]: https://www.contributor-covenant.org/faq
+[translations]: https://www.contributor-covenant.org/translations

android/src/main/java/com/sensitiveinfo/HybridSensitiveInfo.kt

@@ -1,12 +1,20 @@
 package com.sensitiveinfo
 
 import android.content.Context
+import android.os.Handler
+import android.os.Looper
 import com.margelo.nitro.core.Promise
 import com.margelo.nitro.sensitiveinfo.*
+import com.sensitiveinfo.internal.auth.AndroidAuthenticationManager
+import com.sensitiveinfo.internal.auth.AuthenticationManager
 import com.sensitiveinfo.internal.auth.BiometricAuthenticator
+import com.sensitiveinfo.internal.crypto.AccessControlManager
 import com.sensitiveinfo.internal.crypto.AccessControlResolver
+import com.sensitiveinfo.internal.crypto.AndroidAccessControlManager
 import com.sensitiveinfo.internal.crypto.CryptoManager
 import com.sensitiveinfo.internal.crypto.SecurityAvailabilityResolver
+import com.sensitiveinfo.internal.metadata.AndroidMetadataManagerImpl
+import com.sensitiveinfo.internal.metadata.MetadataManager
 import com.sensitiveinfo.internal.response.ResponseBuilder
 import com.sensitiveinfo.internal.response.StandardResponseBuilder
 import com.sensitiveinfo.internal.storage.PersistedEntry
@@ -41,10 +49,14 @@ import kotlin.jvm.Volatile
  * @since 6.0.0
  */
 final class HybridSensitiveInfo : HybridSensitiveInfoSpec() {
+  
   private data class Dependencies(
     val context: Context,
     val storage: SecureStorage,
     val cryptoManager: CryptoManager,
+    val metadataManager: MetadataManager,
+    val authenticationManager: AuthenticationManager,
+    val accessControlManager: AccessControlManager,
     val accessControlResolver: AccessControlResolver,
     val securityAvailabilityResolver: SecurityAvailabilityResolver,
     val serviceNameResolver: ServiceNameResolver,
@@ -58,9 +70,11 @@ final class HybridSensitiveInfo : HybridSensitiveInfoSpec() {
   private val initializationLock = Any()
   private val coroutineScope = CoroutineScope(Dispatchers.Default + SupervisorJob())
   private var rotationEventCallback: ((RotationEvent) -> Unit)? = null
-  private val mainHandler = android.os.Handler(android.os.Looper.getMainLooper())
+  private val mainHandler = Handler(Looper.getMainLooper())
   private var rotationCheckRunnable: Runnable? = null
 
+  // MARK: - Initialization
+
   private fun initialize(ctx: Context): Dependencies {
     dependencies?.let { return it }
 
@@ -72,10 +86,20 @@ final class HybridSensitiveInfo : HybridSensitiveInfoSpec() {
         val authenticator = BiometricAuthenticator()
         val cryptoManager = CryptoManager(authenticator)
 
+        // Initialize specialized managers
+        val metadataManager: MetadataManager = AndroidMetadataManagerImpl()
+        val authenticationManager: AuthenticationManager = AndroidAuthenticationManager(authenticator)
+        val accessControlManager: AccessControlManager = AndroidAccessControlManager(
+          securityAvailabilityResolver
+        )
+
         Dependencies(
           context = ctx,
           storage = SecureStorage(ctx),
           cryptoManager = cryptoManager,
+          metadataManager = metadataManager,
+          authenticationManager = authenticationManager,
+          accessControlManager = accessControlManager,
           accessControlResolver = accessControlResolver,
           securityAvailabilityResolver = securityAvailabilityResolver,
           serviceNameResolver = serviceNameResolver,
@@ -655,15 +679,21 @@ final class HybridSensitiveInfo : HybridSensitiveInfoSpec() {
       var reEncryptedCount = 0
       val errors = mutableListOf<ReEncryptError>()
 
-      // Step 4: Re-encrypt items that use old keys
+      // Step 4: Re-encrypt items that use old keys or have empty metadata alias
       for ((key, entry) in entries) {
         try {
-          if (entry.alias != currentKeyVersion && entry.ciphertext != null && entry.iv != null) {
+          // Re-encrypt if: (1) using old key, (2) metadata alias is empty, or (3) has ciphertext and iv
+          val shouldReEncrypt = (entry.metadata.alias != currentKeyVersion || entry.metadata.alias.isEmpty()) && 
+                                entry.ciphertext != null && entry.iv != null
+          
+          if (shouldReEncrypt) {
             // Get access control from persisted
             val accessControl = accessControlFromPersisted(entry.metadata.accessControl) ?: AccessControl.NONE
             val securityLevel = securityLevelFromPersisted(entry.metadata.securityLevel) ?: SecurityLevel.SOFTWARE
 
-            // Decrypt with old key
+            // Decrypt with old key (use metadata.alias or entry.alias as fallback)
+            val oldKeyAlias = entry.metadata.alias.takeIf { it.isNotEmpty() } ?: entry.alias
+            
             val resolution = deps.cryptoManager.buildResolutionForPersisted(
               accessControl = accessControl,
               securityLevel = securityLevel,
@@ -674,7 +704,7 @@ final class HybridSensitiveInfo : HybridSensitiveInfoSpec() {
             )
 
             val plaintext = deps.cryptoManager.decrypt(
-              entry.alias,
+              oldKeyAlias,
               entry.ciphertext,
               entry.iv,
               resolution,
@@ -698,7 +728,7 @@ final class HybridSensitiveInfo : HybridSensitiveInfoSpec() {
               null
             )
 
-            // Update storage
+            // Update storage with new key alias
             val updatedEntry = entry.copy(
               ciphertext = encryption.ciphertext,
               iv = encryption.iv,
@@ -797,12 +827,18 @@ final class HybridSensitiveInfo : HybridSensitiveInfoSpec() {
 
     for ((key, entry) in entries) {
       try {
-        if (entry.metadata.alias != newKeyVersion && entry.ciphertext != null && entry.iv != null) {
+        // Re-encrypt if: (1) using old key, (2) metadata alias is empty, or (3) has ciphertext and iv
+        val shouldReEncrypt = (entry.metadata.alias != newKeyVersion || entry.metadata.alias.isEmpty()) && 
+                              entry.ciphertext != null && entry.iv != null
+        
+        if (shouldReEncrypt) {
           // Get access control from persisted
           val accessControl = accessControlFromPersisted(entry.metadata.accessControl) ?: AccessControl.NONE
           val securityLevel = securityLevelFromPersisted(entry.metadata.securityLevel) ?: SecurityLevel.SOFTWARE
 
-          // Decrypt with old key
+          // Decrypt with old key (use metadata.alias or entry.alias as fallback)
+          val oldKeyAlias = entry.metadata.alias.takeIf { it.isNotEmpty() } ?: entry.alias
+          
           val resolution = deps.cryptoManager.buildResolutionForPersisted(
             accessControl = accessControl,
             securityLevel = securityLevel,
@@ -813,7 +849,7 @@ final class HybridSensitiveInfo : HybridSensitiveInfoSpec() {
           )
 
           val plaintext = deps.cryptoManager.decrypt(
-            entry.metadata.alias,
+            oldKeyAlias,
             entry.ciphertext,
             entry.iv,
             resolution,
@@ -837,7 +873,7 @@ final class HybridSensitiveInfo : HybridSensitiveInfoSpec() {
             null
           )
 
-          // Update storage
+          // Update storage with new key alias
           val updatedEntry = entry.copy(
             ciphertext = encryption.ciphertext,
             iv = encryption.iv,

android/src/main/java/com/sensitiveinfo/internal/auth/AndroidAuthenticationManagerImpl.kt

@@ -0,0 +1,96 @@
+package com.sensitiveinfo.internal.auth
+
+import android.content.Context
+import android.os.Build
+import androidx.biometric.BiometricManager
+import androidx.biometric.BiometricPrompt
+import androidx.fragment.app.FragmentActivity
+import com.margelo.nitro.sensitiveinfo.AuthenticationPrompt
+import com.sensitiveinfo.internal.util.ReactContextHolder
+import kotlinx.coroutines.suspendCancellableCoroutine
+import kotlin.coroutines.resume
+import kotlin.coroutines.resumeWithException
+
+/**
+ * Concrete implementation of AuthenticationManager for Android.
+ *
+ * Handles biometric and device credential authentication:
+ * - Biometric prompt presentation
+ * - Device credential fallback
+ * - Error mapping and handling
+ * - Custom prompt customization
+ *
+ * @since 6.0.0
+ */
+class AndroidAuthenticationManager(
+  private val biometricAuthenticator: BiometricAuthenticator = BiometricAuthenticator()
+) : AuthenticationManager {
+  
+  private val context: Context?
+    get() = ReactContextHolder.getContext()
+
+  override suspend fun isBiometricAvailable(): Boolean {
+    val ctx = context ?: return false
+    val manager = BiometricManager.from(ctx)
+    return manager.canAuthenticate(BiometricManager.Authenticators.BIOMETRIC_STRONG) == BiometricManager.BIOMETRIC_SUCCESS
+  }
+
+  override suspend fun isDeviceCredentialAvailable(): Boolean {
+    val ctx = context ?: return false
+    val manager = BiometricManager.from(ctx)
+    return manager.canAuthenticate(BiometricManager.Authenticators.DEVICE_CREDENTIAL) == BiometricManager.BIOMETRIC_SUCCESS
+  }
+
+  override suspend fun evaluateBiometric(prompt: AuthenticationPrompt?): Boolean {
+    return suspendCancellableCoroutine { continuation ->
+      val ctx = context
+      if (ctx !is FragmentActivity) {
+        continuation.resumeWithException(
+          IllegalStateException("Context must be FragmentActivity for biometric authentication")
+        )
+        return@suspendCancellableCoroutine
+      }
+
+      val title = prompt?.title ?: "Authenticate"
+      val subtitle = prompt?.subtitle ?: "Use biometric to continue"
+      val negativeText = prompt?.cancel ?: "Cancel"
+
+      biometricAuthenticator.authenticate(
+        fragmentActivity = ctx,
+        title = title,
+        subtitle = subtitle,
+        negativeButtonText = negativeText,
+        onSuccess = { continuation.resume(true) },
+        onError = { error ->
+          if (isAuthenticationCanceled(error)) {
+            continuation.resumeWithException(
+              Exception("[E_AUTH_CANCELED] Authentication prompt canceled by the user.")
+            )
+          } else {
+            continuation.resumeWithException(error)
+          }
+        }
+      )
+    }
+  }
+
+  override suspend fun evaluateDeviceCredential(prompt: AuthenticationPrompt?): Boolean {
+    // Device credential is handled through BiometricPrompt with DEVICE_CREDENTIAL authenticator
+    return evaluateBiometric(prompt)
+  }
+
+  override fun isAuthenticationCanceled(exception: Exception): Boolean {
+    val message = exception.message ?: ""
+    return message.contains("canceled", ignoreCase = true) ||
+           message.contains("user_cancel", ignoreCase = true) ||
+           message.contains("negative_button", ignoreCase = true)
+  }
+
+  override fun makeAuthenticationError(exception: Exception): String {
+    return if (isAuthenticationCanceled(exception)) {
+      "[E_AUTH_CANCELED] Authentication prompt canceled by the user."
+    } else {
+      "Authentication failed: ${exception.message}"
+    }
+  }
+}