AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.android.certinstaller">

    <original-package android:name="com.android.certinstaller"/>

    <permission android:name="com.android.certinstaller.INSTALL_AS_USER"
         android:protectionLevel="signature"/>
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
    <uses-permission android:name="android.permission.MANAGE_USERS"/>
    <uses-permission android:name="android.permission.ACCESS_ALL_DOWNLOADS"/>
    <uses-permission android:name="android.permission.HIDE_NON_SYSTEM_OVERLAY_WINDOWS"/>

    <application android:label="@string/app_name"
         android:allowBackup="false">
        <activity android:name=".CertInstallerMain"
             android:theme="@style/Transparent"
             android:configChanges="orientation|keyboardHidden|screenSize"
             android:exported="true">
            <intent-filter>
                <action android:name="android.credentials.INSTALL"/>
                <category android:name="android.intent.category.DEFAULT"/>
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.VIEW"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <data android:mimeType="application/x-x509-ca-cert"/>
                <data android:mimeType="application/x-x509-user-cert"/>
                <data android:mimeType="application/x-x509-server-cert"/>
                <data android:mimeType="application/x-pkcs12"/>
                <data android:mimeType="application/x-pem-file"/>
                <data android:mimeType="application/pkix-cert"/>
                <data android:mimeType="application/x-wifi-config"/>
            </intent-filter>
        </activity>

        <activity-alias android:name=".InstallCertAsUser"
             android:targetActivity=".CertInstallerMain"
             android:exported="true"
             android:permission="com.android.certinstaller.INSTALL_AS_USER">
            <intent-filter>
                <action android:name="android.credentials.INSTALL_AS_USER"/>
                <category android:name="android.intent.category.DEFAULT"/>
            </intent-filter>
        </activity-alias>

        <activity android:name=".CertInstaller"
             android:theme="@style/Transparent"
             android:configChanges="orientation|keyboardHidden"
             android:exported="false">
        </activity>
        <activity android:name=".WiFiInstaller"
             android:theme="@style/Transparent"
             android:configChanges="orientation|keyboardHidden"
             android:exported="false">
        </activity>
        <activity android:name=".CredentialsInstallDialog"
             android:theme="@style/Transparent"
             android:configChanges="orientation|keyboardHidden"
             android:exported="false">
        </activity>
    </application>
</manifest>