diff --git a/manager/build.gradle.kts b/manager/build.gradle.kts
index 4435a08..e99756a 100644
--- a/manager/build.gradle.kts
+++ b/manager/build.gradle.kts
@@ -68,19 +68,19 @@ dependencies {
     implementation(projects.share.android)
 
     implementation("androidx.core:core-ktx:1.7.0")
-    implementation("androidx.activity:activity-compose:1.5.0-alpha03")
+    implementation("androidx.activity:activity-compose:1.6.0-alpha01")
     implementation("androidx.compose.material:material-icons-extended:1.1.1")
-    implementation("androidx.compose.material3:material3:1.0.0-alpha07")
+    implementation("androidx.compose.material3:material3:1.0.0-alpha08")
     implementation("androidx.compose.runtime:runtime-livedata:1.1.1")
     implementation("androidx.compose.ui:ui:1.1.1")
     implementation("androidx.compose.ui:ui-tooling:1.1.1")
-    implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.5.0-alpha04")
+    implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.5.0-alpha05")
     implementation("androidx.navigation:navigation-compose:2.5.0-alpha03")
     implementation("androidx.preference:preference:1.2.0")
-    implementation("com.google.accompanist:accompanist-drawablepainter:0.24.2-alpha")
-    implementation("com.google.accompanist:accompanist-navigation-animation:0.24.2-alpha")
-    implementation("com.google.accompanist:accompanist-permissions:0.24.2-alpha")
-    implementation("com.google.accompanist:accompanist-swiperefresh:0.24.2-alpha")
+    implementation("com.google.accompanist:accompanist-drawablepainter:0.24.5-alpha")
+    implementation("com.google.accompanist:accompanist-navigation-animation:0.24.5-alpha")
+    implementation("com.google.accompanist:accompanist-permissions:0.24.5-alpha")
+    implementation("com.google.accompanist:accompanist-swiperefresh:0.24.5-alpha")
     implementation("com.google.android.material:material:1.5.0")
     implementation("dev.rikka.shizuku:api:12.1.0")
     implementation("dev.rikka.shizuku:provider:12.1.0")
diff --git a/manager/src/main/AndroidManifest.xml b/manager/src/main/AndroidManifest.xml
index c7c1d1f..7953c1f 100644
--- a/manager/src/main/AndroidManifest.xml
+++ b/manager/src/main/AndroidManifest.xml
@@ -12,6 +12,7 @@
         android:maxSdkVersion="28" />
 
     <application
+        android:name=".LSPApplication"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
@@ -38,9 +39,9 @@
         <provider
             android:name="rikka.shizuku.ShizukuProvider"
             android:authorities="org.lsposed.lspatch.shizuku"
-            android:multiprocess="false"
             android:enabled="true"
             android:exported="true"
+            android:multiprocess="false"
             android:permission="android.permission.INTERACT_ACROSS_USERS_FULL" />
     </application>
 
diff --git a/manager/src/main/java/org/lsposed/lspatch/LSPApplication.kt b/manager/src/main/java/org/lsposed/lspatch/LSPApplication.kt
index 5bd563b..7103c22 100644
--- a/manager/src/main/java/org/lsposed/lspatch/LSPApplication.kt
+++ b/manager/src/main/java/org/lsposed/lspatch/LSPApplication.kt
@@ -1,6 +1,8 @@
 package org.lsposed.lspatch
 
 import android.app.Application
+import android.content.Context
+import android.content.SharedPreferences
 import android.content.pm.PackageManager
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -15,6 +17,9 @@ class LSPApplication : Application() {
         var shizukuBinderAvalable = false
         var shizukuGranted by mutableStateOf(false)
 
+        lateinit var appContext: Context
+        lateinit var prefs: SharedPreferences
+
         init {
             Shizuku.addBinderReceivedListenerSticky {
                 shizukuBinderAvalable = true
@@ -26,4 +31,11 @@ class LSPApplication : Application() {
             }
         }
     }
+
+    override fun onCreate() {
+        super.onCreate()
+        appContext = applicationContext
+        appContext.filesDir.mkdir()
+        prefs = appContext.getSharedPreferences("settings", Context.MODE_PRIVATE)
+    }
 }
diff --git a/manager/src/main/java/org/lsposed/lspatch/Patcher.kt b/manager/src/main/java/org/lsposed/lspatch/Patcher.kt
index eaf3897..09eccc1 100644
--- a/manager/src/main/java/org/lsposed/lspatch/Patcher.kt
+++ b/manager/src/main/java/org/lsposed/lspatch/Patcher.kt
@@ -7,6 +7,7 @@ import android.os.Environment
 import android.provider.MediaStore
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
+import org.lsposed.lspatch.config.MyKeyStore
 import org.lsposed.patch.LSPatch
 import org.lsposed.patch.util.Logger
 import java.io.File
@@ -29,7 +30,7 @@ object Patcher {
         lateinit var outputPath: String
 
         fun toStringArray(): Array<String> {
-            return arrayListOf<String>().run {
+            return buildList {
                 addAll(apkPaths)
                 add("-o"); add(outputPath)
                 if (debuggable) add("-d")
@@ -43,9 +44,10 @@ object Patcher {
                 if (embeddedModules.isNotEmpty()) {
                     add("-m"); addAll(embeddedModules)
                 }
-
-                toTypedArray()
-            }
+                if (!MyKeyStore.useDefault) {
+                    addAll(arrayOf("-k", MyKeyStore.file.path, MyKeyStore.password, MyKeyStore.alias,MyKeyStore.aliasPassword))
+                }
+            }.toTypedArray()
         }
     }
 
diff --git a/manager/src/main/java/org/lsposed/lspatch/config/MyKeyStore.kt b/manager/src/main/java/org/lsposed/lspatch/config/MyKeyStore.kt
new file mode 100644
index 0000000..7a36943
--- /dev/null
+++ b/manager/src/main/java/org/lsposed/lspatch/config/MyKeyStore.kt
@@ -0,0 +1,54 @@
+package org.lsposed.lspatch.config
+
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import org.lsposed.lspatch.LSPApplication.Companion.appContext
+import org.lsposed.lspatch.LSPApplication.Companion.prefs
+import java.io.File
+
+object MyKeyStore {
+
+    val file = File("${appContext.filesDir}/keystore.bks")
+
+    val tmpFile = File("${appContext.filesDir}/keystore.bks.tmp")
+
+    val password: String
+        get() = prefs.getString("keystore_password", "123456")!!
+
+    val alias: String
+        get() = prefs.getString("keystore_alias", "key0")!!
+
+    val aliasPassword: String
+        get() = prefs.getString("keystore_alias_password", "123456")!!
+
+    private var mUseDefault by mutableStateOf(!file.exists())
+    val useDefault by derivedStateOf { mUseDefault }
+
+    suspend fun reset() {
+        withContext(Dispatchers.IO) {
+            file.delete()
+            prefs.edit()
+                .putString("keystore_password", "123456")
+                .putString("keystore_alias", "key0")
+                .putString("keystore_alias_password", "123456")
+                .apply()
+            mUseDefault = true
+        }
+    }
+
+    suspend fun setCustom(password: String, alias: String, aliasPassword: String) {
+        withContext(Dispatchers.IO) {
+            tmpFile.renameTo(file)
+            prefs.edit()
+                .putString("keystore_password", password)
+                .putString("keystore_alias", alias)
+                .putString("keystore_alias_password", aliasPassword)
+                .apply()
+            mUseDefault = false
+        }
+    }
+}
diff --git a/manager/src/main/java/org/lsposed/lspatch/ui/page/PageList.kt b/manager/src/main/java/org/lsposed/lspatch/ui/page/PageList.kt
index 34928a9..2c1bb01 100644
--- a/manager/src/main/java/org/lsposed/lspatch/ui/page/PageList.kt
+++ b/manager/src/main/java/org/lsposed/lspatch/ui/page/PageList.kt
@@ -41,7 +41,7 @@ enum class PageList(
     Settings(
         iconSelected = Icons.Filled.Settings,
         iconNotSelected = Icons.Outlined.Settings,
-        body = {}
+        body = { SettingsPage() }
     ),
     NewPatch(
         body = { NewPatchPage(this) }
diff --git a/manager/src/main/java/org/lsposed/lspatch/ui/page/SettingsPage.kt b/manager/src/main/java/org/lsposed/lspatch/ui/page/SettingsPage.kt
new file mode 100644
index 0000000..8f0d417
--- /dev/null
+++ b/manager/src/main/java/org/lsposed/lspatch/ui/page/SettingsPage.kt
@@ -0,0 +1,214 @@
+package org.lsposed.lspatch.ui.page
+
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.interaction.PressInteraction
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.outlined.Ballot
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import kotlinx.coroutines.launch
+import org.lsposed.lspatch.R
+import org.lsposed.lspatch.config.MyKeyStore
+import org.lsposed.lspatch.ui.component.settings.SettingsItem
+import java.io.IOException
+import java.security.GeneralSecurityException
+import java.security.KeyStore
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun SettingsPage() {
+    Scaffold(
+        topBar = { TopBar() }
+    ) { innerPadding ->
+        Column(
+            modifier = Modifier
+                .padding(innerPadding)
+                .verticalScroll(rememberScrollState())
+        ) {
+            KeyStore()
+        }
+    }
+}
+
+@Composable
+private fun TopBar() {
+    SmallTopAppBar(
+        title = { Text(stringResource(R.string.page_settings)) }
+    )
+}
+
+@Composable
+private fun KeyStore() {
+    val context = LocalContext.current
+    val scope = rememberCoroutineScope()
+    var dropDownExpanded by remember { mutableStateOf(false) }
+    var showDialog by remember { mutableStateOf(false) }
+
+    Box {
+        SettingsItem(
+            onClick = { dropDownExpanded = !dropDownExpanded },
+            icon = Icons.Outlined.Ballot,
+            title = stringResource(R.string.settings_keystore),
+            desc = stringResource(if (MyKeyStore.useDefault) R.string.settings_keystore_default else R.string.settings_keystore_custom)
+        )
+        DropdownMenu(expanded = dropDownExpanded, onDismissRequest = { dropDownExpanded = false }) {
+            DropdownMenuItem(
+                text = { Text(stringResource(R.string.settings_keystore_default)) },
+                onClick = {
+                    scope.launch { MyKeyStore.reset() }
+                    dropDownExpanded = false
+                }
+            )
+            DropdownMenuItem(
+                text = { Text(stringResource(R.string.settings_keystore_custom)) },
+                onClick = { showDialog = true }
+            )
+        }
+    }
+
+    if (showDialog) {
+        var wrongKeystore by rememberSaveable { mutableStateOf(false) }
+        var wrongPassword by rememberSaveable { mutableStateOf(false) }
+        var wrongAliasName by rememberSaveable { mutableStateOf(false) }
+        var wrongAliasPassword by rememberSaveable { mutableStateOf(false) }
+
+        var path by rememberSaveable { mutableStateOf("") }
+        var password by rememberSaveable { mutableStateOf("") }
+        var alias by rememberSaveable { mutableStateOf("") }
+        var aliasPassword by rememberSaveable { mutableStateOf("") }
+
+        val launcher = rememberLauncherForActivityResult(ActivityResultContracts.GetContent()) { uri ->
+            if (uri == null) return@rememberLauncherForActivityResult
+            context.contentResolver.openInputStream(uri).use { input ->
+                MyKeyStore.tmpFile.outputStream().use { output ->
+                    input?.copyTo(output)
+                }
+            }
+            path = uri.path ?: ""
+        }
+
+        AlertDialog(
+            onDismissRequest = { dropDownExpanded = false; showDialog = false },
+            confirmButton = {
+                TextButton(
+                    content = { Text(stringResource(android.R.string.ok)) },
+                    onClick = {
+                        wrongKeystore = false
+                        wrongPassword = false
+                        wrongAliasName = false
+                        wrongAliasPassword = false
+
+                        if (path.isEmpty()) {
+                            wrongKeystore = true
+                            return@TextButton
+                        }
+                        val keyStore = KeyStore.getInstance(KeyStore.getDefaultType())
+                        try {
+                            MyKeyStore.tmpFile.inputStream().use { input ->
+                                keyStore.load(input, password.toCharArray())
+                            }
+                        } catch (e: IOException) {
+                            wrongKeystore = true
+                            if (e.message == "KeyStore integrity check failed.") {
+                                wrongPassword = true
+                            }
+                            return@TextButton
+                        }
+                        if (!keyStore.containsAlias(alias)) {
+                            wrongAliasName = true
+                            return@TextButton
+                        }
+                        try {
+                            keyStore.getKey(alias, aliasPassword.toCharArray())
+                        } catch (e: GeneralSecurityException) {
+                            wrongAliasPassword = true
+                            return@TextButton
+                        }
+
+                        scope.launch { MyKeyStore.setCustom(password, alias, aliasPassword) }
+                        dropDownExpanded = false
+                        showDialog = false
+                    })
+            },
+            dismissButton = {
+                TextButton(
+                    content = { Text(stringResource(android.R.string.cancel)) },
+                    onClick = { dropDownExpanded = false; showDialog = false }
+                )
+            },
+            title = { Text(stringResource(R.string.settings_keystore_dialog_title)) },
+            text = {
+                Column {
+                    val interactionSource = remember { MutableInteractionSource() }
+                    LaunchedEffect(interactionSource) {
+                        interactionSource.interactions.collect { interaction ->
+                            if (interaction is PressInteraction.Release) {
+                                launcher.launch("*/*")
+                            }
+                        }
+                    }
+
+                    val wrongText = when {
+                        wrongAliasPassword -> stringResource(R.string.settings_keystore_wrong_keystore)
+                        wrongAliasName -> stringResource(R.string.settings_keystore_wrong_alias)
+                        wrongPassword -> stringResource(R.string.settings_keystore_wrong_password)
+                        wrongKeystore -> stringResource(R.string.settings_keystore_wrong_keystore)
+                        else -> null
+                    }
+                    Text(
+                        modifier = Modifier
+                            .align(Alignment.CenterHorizontally)
+                            .padding(bottom = 8.dp),
+                        text = wrongText ?: stringResource(R.string.settings_keystore_desc),
+                        color = if (wrongText != null) MaterialTheme.colorScheme.error else Color.Unspecified
+                    )
+
+                    OutlinedTextField(
+                        value = path,
+                        onValueChange = { path = it },
+                        readOnly = true,
+                        label = { Text(stringResource(R.string.settings_keystore_file)) },
+                        singleLine = true,
+                        isError = wrongKeystore,
+                        interactionSource = interactionSource
+                    )
+                    OutlinedTextField(
+                        value = password,
+                        onValueChange = { password = it },
+                        label = { Text(stringResource(R.string.settings_keystore_password)) },
+                        singleLine = true,
+                        isError = wrongPassword
+                    )
+                    OutlinedTextField(
+                        value = alias,
+                        onValueChange = { alias = it },
+                        label = { Text(stringResource(R.string.settings_keystore_alias)) },
+                        singleLine = true,
+                        isError = wrongAliasName
+                    )
+                    OutlinedTextField(
+                        value = aliasPassword,
+                        onValueChange = { aliasPassword = it },
+                        label = { Text(stringResource(R.string.settings_keystore_alias_password)) },
+                        singleLine = true,
+                        isError = wrongAliasPassword
+                    )
+                }
+            }
+        )
+    }
+}
diff --git a/manager/src/main/res/values/strings.xml b/manager/src/main/res/values/strings.xml
index ebee0dc..43872c3 100644
--- a/manager/src/main/res/values/strings.xml
+++ b/manager/src/main/res/values/strings.xml
@@ -3,7 +3,6 @@
 
     <string name="page_repo">Repo</string>
     <string name="page_logs">Logs</string>
-    <string name="page_settings">Settings</string>
 
     <!-- Home Page -->
     <string name="home_shizuku_available">Shizuku service available</string>
@@ -48,4 +47,20 @@
 
     <!-- Select Apps Page -->
     <string name="page_select_apps">Select Apps</string>
+
+    <!-- Settings Page -->
+    <string name="page_settings">Settings</string>
+    <string name="settings_keystore">Signature keystore</string>
+    <string name="settings_keystore_default">Built-in</string>
+    <string name="settings_keystore_custom">Custom</string>
+    <string name="settings_keystore_dialog_title">Custom keystore</string>
+    <string name="settings_keystore_file">Keystore file</string>
+    <string name="settings_keystore_password">Password</string>
+    <string name="settings_keystore_alias">Alias</string>
+    <string name="settings_keystore_alias_password">Alias password</string>
+    <string name="settings_keystore_desc">Set keystore (BKS)</string>
+    <string name="settings_keystore_wrong_keystore">Wrong type of keystore</string>
+    <string name="settings_keystore_wrong_password">Wrong keystore password</string>
+    <string name="settings_keystore_wrong_alias">Wrong alias name</string>
+    <string name="settings_keystore_wrong_alias_password">Wrong alias password</string>
 </resources>