diff --git a/build.gradle.kts b/build.gradle.kts
new file mode 100644
index 0000000..8416bc7
--- /dev/null
+++ b/build.gradle.kts
@@ -0,0 +1,16 @@
+import com.ncorti.ktfmt.gradle.tasks.KtfmtFormatTask
+
+plugins {
+    alias(libs.plugins.android.application) apply false
+    alias(libs.plugins.android.library) apply false
+    alias(libs.plugins.kotlin.android) apply false
+    alias(libs.plugins.ktfmt) apply true
+}
+
+tasks.register<KtfmtFormatTask>("format") {
+    source = project.fileTree(rootDir)
+    include("*.gradle.kts", "*/*.gradle.kts")
+    dependsOn(":stub:ktfmtFormat")
+}
+
+ktfmt { kotlinLangStyle() }
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 0000000..5bac8ac
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1 @@
+android.useAndroidX=true
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
new file mode 100644
index 0000000..69096e5
--- /dev/null
+++ b/gradle/libs.versions.toml
@@ -0,0 +1,14 @@
+[versions]
+agp = "8.13.1"
+annotation = "1.9.1"
+kotlin = "2.2.21"
+ktfmt = "0.25.0"
+
+[libraries]
+annotation = { module = "androidx.annotation:annotation", version.ref = "annotation" }
+
+[plugins]
+android-application = { id = "com.android.application", version.ref = "agp" }
+android-library = { id = "com.android.library", version.ref = "agp" }
+kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
+ktfmt = { id = "com.ncorti.ktfmt.gradle", version.ref = "ktfmt" }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..f8e1ee3
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..bad7c24
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.0-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..adff685
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,248 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..e509b2d
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,93 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle.kts b/settings.gradle.kts
new file mode 100644
index 0000000..312474a
--- /dev/null
+++ b/settings.gradle.kts
@@ -0,0 +1,19 @@
+pluginManagement {
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "TEESimulator"
+
+include(":stub")
diff --git a/stub/build.gradle.kts b/stub/build.gradle.kts
new file mode 100644
index 0000000..2948d58
--- /dev/null
+++ b/stub/build.gradle.kts
@@ -0,0 +1,21 @@
+plugins {
+    alias(libs.plugins.android.library)
+    alias(libs.plugins.ktfmt)
+}
+
+android {
+    namespace = "org.matrix.stub"
+    compileSdk = 36
+    buildToolsVersion = "36.0.0"
+    defaultConfig { minSdk = 29 }
+
+    buildTypes { release { isMinifyEnabled = false } }
+
+    lint { abortOnError = true }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_21
+        targetCompatibility = JavaVersion.VERSION_21
+    }
+}
+
+dependencies { compileOnly(libs.annotation) }
diff --git a/stub/src/main/AndroidManifest.xml b/stub/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..1d26c87
--- /dev/null
+++ b/stub/src/main/AndroidManifest.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest/>
\ No newline at end of file
diff --git a/stub/src/main/java/android/content/pm/IPackageManager.java b/stub/src/main/java/android/content/pm/IPackageManager.java
new file mode 100644
index 0000000..1d481d4
--- /dev/null
+++ b/stub/src/main/java/android/content/pm/IPackageManager.java
@@ -0,0 +1,17 @@
+package android.content.pm;
+
+import android.os.IBinder;
+
+public interface IPackageManager {
+    String[] getPackagesForUid(int uid);
+
+    PackageInfo getPackageInfo(String packageName, long flags, int userId);
+
+    PackageInfo getPackageInfo(String packageName, int flags, int userId);
+
+    class Stub {
+        public static IPackageManager asInterface(IBinder binder) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+    }
+}
diff --git a/stub/src/main/java/android/hardware/security/keymint/Algorithm.java b/stub/src/main/java/android/hardware/security/keymint/Algorithm.java
new file mode 100644
index 0000000..a9f6907
--- /dev/null
+++ b/stub/src/main/java/android/hardware/security/keymint/Algorithm.java
@@ -0,0 +1,9 @@
+package android.hardware.security.keymint;
+
+public @interface Algorithm {
+    int AES = 32;
+    int EC = 3;
+    int HMAC = 128;
+    int RSA = 1;
+    int TRIPLE_DES = 33;
+}
diff --git a/stub/src/main/java/android/hardware/security/keymint/EcCurve.java b/stub/src/main/java/android/hardware/security/keymint/EcCurve.java
new file mode 100644
index 0000000..ee7f967
--- /dev/null
+++ b/stub/src/main/java/android/hardware/security/keymint/EcCurve.java
@@ -0,0 +1,9 @@
+package android.hardware.security.keymint;
+
+public @interface EcCurve {
+    public static final int CURVE_25519 = 4;
+    public static final int P_224 = 0;
+    public static final int P_256 = 1;
+    public static final int P_384 = 2;
+    public static final int P_521 = 3;
+}
diff --git a/stub/src/main/java/android/hardware/security/keymint/KeyParameter.java b/stub/src/main/java/android/hardware/security/keymint/KeyParameter.java
new file mode 100644
index 0000000..9efe111
--- /dev/null
+++ b/stub/src/main/java/android/hardware/security/keymint/KeyParameter.java
@@ -0,0 +1,32 @@
+package android.hardware.security.keymint;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import androidx.annotation.NonNull;
+
+public class KeyParameter implements Parcelable {
+    public static final Creator<KeyParameter> CREATOR = new Creator<KeyParameter>() {
+        @Override
+        public KeyParameter createFromParcel(Parcel in) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+
+        @Override
+        public KeyParameter[] newArray(int size) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+    };
+    public int tag = 0;
+    public KeyParameterValue value;
+
+    @Override
+    public int describeContents() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    @Override
+    public void writeToParcel(@NonNull Parcel parcel, int i) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+}
diff --git a/stub/src/main/java/android/hardware/security/keymint/KeyParameterValue.java b/stub/src/main/java/android/hardware/security/keymint/KeyParameterValue.java
new file mode 100644
index 0000000..fb233a7
--- /dev/null
+++ b/stub/src/main/java/android/hardware/security/keymint/KeyParameterValue.java
@@ -0,0 +1,238 @@
+package android.hardware.security.keymint;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import androidx.annotation.NonNull;
+
+public final class KeyParameterValue implements Parcelable {
+    public static final int algorithm = 1;
+    public static final int blob = 14;
+    public static final int blockMode = 2;
+    public static final int boolValue = 10;
+    public static final int dateTime = 13;
+    public static final int digest = 4;
+    public static final int ecCurve = 5;
+    public static final int hardwareAuthenticatorType = 8;
+    public static final int integer = 11;
+    public static final int invalid = 0;
+    public static final int keyPurpose = 7;
+    public static final int longInteger = 12;
+    public static final int origin = 6;
+    public static final int paddingMode = 3;
+    public static final int securityLevel = 9;
+    public static final Creator<KeyParameterValue> CREATOR = new Creator<KeyParameterValue>() {
+        @Override
+        public KeyParameterValue createFromParcel(Parcel in) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+
+        @Override
+        public KeyParameterValue[] newArray(int size) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+    };
+
+    public KeyParameterValue() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    protected KeyParameterValue(Parcel in) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue invalid(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue algorithm(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue blockMode(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue paddingMode(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue digest(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue ecCurve(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue origin(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue keyPurpose(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue hardwareAuthenticatorType(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue securityLevel(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue boolValue(boolean _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue integer(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue longInteger(long _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue dateTime(long _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static KeyParameterValue blob(byte[] _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public int getTag() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public int getInvalid() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setInvalid(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public int getAlgorithm() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setAlgorithm(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public int getBlockMode() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setBlockMode(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public int getPaddingMode() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setPaddingMode(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public int getDigest() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setDigest(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public int getEcCurve() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setEcCurve(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public int getOrigin() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setOrigin(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public int getKeyPurpose() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setKeyPurpose(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public int getHardwareAuthenticatorType() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setHardwareAuthenticatorType(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public int getSecurityLevel() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setSecurityLevel(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public boolean getBoolValue() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setBoolValue(boolean _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public int getInteger() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setInteger(int _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public long getLongInteger() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setLongInteger(long _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public long getDateTime() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setDateTime(long _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public byte[] getBlob() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public void setBlob(byte[] _value) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+
+    @Override
+    public int describeContents() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    @Override
+    public void writeToParcel(@NonNull Parcel parcel, int i) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+}
diff --git a/stub/src/main/java/android/hardware/security/keymint/KeyPurpose.java b/stub/src/main/java/android/hardware/security/keymint/KeyPurpose.java
new file mode 100644
index 0000000..04be5ca
--- /dev/null
+++ b/stub/src/main/java/android/hardware/security/keymint/KeyPurpose.java
@@ -0,0 +1,11 @@
+package android.hardware.security.keymint;
+
+public @interface KeyPurpose {
+    int AGREE_KEY = 6;
+    int ATTEST_KEY = 7;
+    int DECRYPT = 1;
+    int ENCRYPT = 0;
+    int SIGN = 2;
+    int VERIFY = 3;
+    int WRAP_KEY = 5;
+}
diff --git a/stub/src/main/java/android/hardware/security/keymint/SecurityLevel.java b/stub/src/main/java/android/hardware/security/keymint/SecurityLevel.java
new file mode 100644
index 0000000..ec5ef35
--- /dev/null
+++ b/stub/src/main/java/android/hardware/security/keymint/SecurityLevel.java
@@ -0,0 +1,8 @@
+package android.hardware.security.keymint;
+
+public @interface SecurityLevel {
+    int KEYSTORE = 100;
+    int SOFTWARE = 0;
+    int STRONGBOX = 2;
+    int TRUSTED_ENVIRONMENT = 1;
+}
diff --git a/stub/src/main/java/android/hardware/security/keymint/Tag.java b/stub/src/main/java/android/hardware/security/keymint/Tag.java
new file mode 100644
index 0000000..f135a76
--- /dev/null
+++ b/stub/src/main/java/android/hardware/security/keymint/Tag.java
@@ -0,0 +1,70 @@
+package android.hardware.security.keymint;
+
+public @interface Tag {
+    int ACTIVE_DATETIME = 1610613136;
+    int ALGORITHM = 268435458;
+    int ALLOW_WHILE_ON_BODY = 1879048698;
+    int APPLICATION_DATA = -1879047492;
+    int APPLICATION_ID = -1879047591;
+    int ASSOCIATED_DATA = -1879047192;
+    int ATTESTATION_APPLICATION_ID = -1879047483;
+    int ATTESTATION_CHALLENGE = -1879047484;
+    int ATTESTATION_ID_BRAND = -1879047482;
+    int ATTESTATION_ID_DEVICE = -1879047481;
+    int ATTESTATION_ID_IMEI = -1879047478;
+    int ATTESTATION_ID_MANUFACTURER = -1879047476;
+    int ATTESTATION_ID_MEID = -1879047477;
+    int ATTESTATION_ID_MODEL = -1879047475;
+    int ATTESTATION_ID_PRODUCT = -1879047480;
+    int ATTESTATION_ID_SECOND_IMEI = -1879047469;
+    int ATTESTATION_ID_SERIAL = -1879047479;
+    int AUTH_TIMEOUT = 805306873;
+    int BLOCK_MODE = 536870916;
+    int BOOTLOADER_ONLY = 1879048494;
+    int BOOT_PATCHLEVEL = 805307087;
+    int CALLER_NONCE = 1879048199;
+    int CERTIFICATE_NOT_AFTER = 1610613745;
+    int CERTIFICATE_NOT_BEFORE = 1610613744;
+    int CERTIFICATE_SERIAL = -2147482642;
+    int CERTIFICATE_SUBJECT = -1879047185;
+    int CONFIRMATION_TOKEN = -1879047187;
+    int CREATION_DATETIME = 1610613437;
+    int DEVICE_UNIQUE_ATTESTATION = 1879048912;
+    int DIGEST = 536870917;
+    int EARLY_BOOT_ONLY = 1879048497;
+    int EC_CURVE = 268435466;
+    int HARDWARE_TYPE = 268435760;
+    int IDENTITY_CREDENTIAL_KEY = 1879048913;
+    int INCLUDE_UNIQUE_ID = 1879048394;
+    int INVALID = 0;
+    int KEY_SIZE = 805306371;
+    int MAC_LENGTH = 805307371;
+    int MAX_BOOT_LEVEL = 805307378;
+    int MAX_USES_PER_BOOT = 805306772;
+    int MIN_MAC_LENGTH = 805306376;
+    int MIN_SECONDS_BETWEEN_OPS = 805306771;
+    int NONCE = -1879047191;
+    int NO_AUTH_REQUIRED = 1879048695;
+    int ORIGIN = 268436158;
+    int ORIGINATION_EXPIRE_DATETIME = 1610613137;
+    int OS_PATCHLEVEL = 805307074;
+    int OS_VERSION = 805307073;
+    int PADDING = 536870918;
+    int PURPOSE = 536870913;
+    int RESET_SINCE_ID_ROTATION = 1879049196;
+    int ROLLBACK_RESISTANCE = 1879048495;
+    int ROOT_OF_TRUST = -1879047488;
+    int RSA_OAEP_MGF_DIGEST = 536871115;
+    int RSA_PUBLIC_EXPONENT = 1342177480;
+    int STORAGE_KEY = 1879048914;
+    int TRUSTED_CONFIRMATION_REQUIRED = 1879048700;
+    int TRUSTED_USER_PRESENCE_REQUIRED = 1879048699;
+    int UNIQUE_ID = -1879047485;
+    int UNLOCKED_DEVICE_REQUIRED = 1879048701;
+    int USAGE_COUNT_LIMIT = 805306773;
+    int USAGE_EXPIRE_DATETIME = 1610613138;
+    int USER_AUTH_TYPE = 268435960;
+    int USER_ID = 805306869;
+    int USER_SECURE_ID = -1610612234;
+    int VENDOR_PATCHLEVEL = 805307086;
+}
diff --git a/stub/src/main/java/android/os/ServiceManager.java b/stub/src/main/java/android/os/ServiceManager.java
new file mode 100644
index 0000000..382995e
--- /dev/null
+++ b/stub/src/main/java/android/os/ServiceManager.java
@@ -0,0 +1,19 @@
+package android.os;
+
+public class ServiceManager {
+    public static IBinder getService(String name) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static void addService(String name, IBinder binder) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static IBinder checkService(String name) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    public static String[] listServices() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+}
diff --git a/stub/src/main/java/android/os/SystemProperties.java b/stub/src/main/java/android/os/SystemProperties.java
new file mode 100644
index 0000000..a56c4dd
--- /dev/null
+++ b/stub/src/main/java/android/os/SystemProperties.java
@@ -0,0 +1,7 @@
+package android.os;
+
+public class SystemProperties {
+    public static String get(String key, String def) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+}
diff --git a/stub/src/main/java/android/system/keystore2/Authorization.java b/stub/src/main/java/android/system/keystore2/Authorization.java
new file mode 100644
index 0000000..02f0726
--- /dev/null
+++ b/stub/src/main/java/android/system/keystore2/Authorization.java
@@ -0,0 +1,8 @@
+package android.system.keystore2;
+
+import android.hardware.security.keymint.KeyParameter;
+
+public class Authorization {
+    public KeyParameter keyParameter;
+    public int securityLevel = 0;
+}
diff --git a/stub/src/main/java/android/system/keystore2/IKeystoreSecurityLevel.java b/stub/src/main/java/android/system/keystore2/IKeystoreSecurityLevel.java
new file mode 100644
index 0000000..33ff1ca
--- /dev/null
+++ b/stub/src/main/java/android/system/keystore2/IKeystoreSecurityLevel.java
@@ -0,0 +1,20 @@
+package android.system.keystore2;
+
+import android.hardware.security.keymint.KeyParameter;
+import android.os.IBinder;
+import android.os.IInterface;
+
+import androidx.annotation.Nullable;
+
+public interface IKeystoreSecurityLevel extends IInterface {
+    String DESCRIPTOR = "android.system.keystore2.IKeystoreSecurityLevel";
+
+    KeyMetadata generateKey(KeyDescriptor key, @Nullable KeyDescriptor attestationKey,
+                            KeyParameter[] params, int flags, byte[] entropy);
+
+    class Stub {
+        public static IKeystoreSecurityLevel asInterface(IBinder b) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+    }
+}
diff --git a/stub/src/main/java/android/system/keystore2/IKeystoreService.java b/stub/src/main/java/android/system/keystore2/IKeystoreService.java
new file mode 100644
index 0000000..6394c0c
--- /dev/null
+++ b/stub/src/main/java/android/system/keystore2/IKeystoreService.java
@@ -0,0 +1,15 @@
+package android.system.keystore2;
+
+import android.os.IBinder;
+
+public interface IKeystoreService {
+    String DESCRIPTOR = "android.system.keystore2.IKeystoreService";
+
+    IKeystoreSecurityLevel getSecurityLevel(int securityLevel);
+
+    class Stub {
+        public static IKeystoreService asInterface(IBinder b) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+    }
+}
diff --git a/stub/src/main/java/android/system/keystore2/KeyDescriptor.java b/stub/src/main/java/android/system/keystore2/KeyDescriptor.java
new file mode 100644
index 0000000..346059d
--- /dev/null
+++ b/stub/src/main/java/android/system/keystore2/KeyDescriptor.java
@@ -0,0 +1,35 @@
+package android.system.keystore2;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import androidx.annotation.NonNull;
+
+public class KeyDescriptor implements Parcelable {
+    public String alias;
+    public byte[] blob;
+    public int domain = 0;
+    public long nspace = 0;
+
+    public static final Creator<KeyDescriptor> CREATOR = new Creator<KeyDescriptor>() {
+        @Override
+        public KeyDescriptor createFromParcel(Parcel in) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+
+        @Override
+        public KeyDescriptor[] newArray(int size) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+    };
+
+    @Override
+    public int describeContents() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    @Override
+    public void writeToParcel(@NonNull Parcel parcel, int i) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+}
diff --git a/stub/src/main/java/android/system/keystore2/KeyEntryResponse.java b/stub/src/main/java/android/system/keystore2/KeyEntryResponse.java
new file mode 100644
index 0000000..712aa9d
--- /dev/null
+++ b/stub/src/main/java/android/system/keystore2/KeyEntryResponse.java
@@ -0,0 +1,33 @@
+package android.system.keystore2;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import androidx.annotation.NonNull;
+
+public class KeyEntryResponse implements Parcelable {
+    public IKeystoreSecurityLevel iSecurityLevel;
+    public KeyMetadata metadata;
+
+    public static final Creator<KeyEntryResponse> CREATOR = new Creator<KeyEntryResponse>() {
+        @Override
+        public KeyEntryResponse createFromParcel(Parcel in) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+
+        @Override
+        public KeyEntryResponse[] newArray(int size) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+    };
+
+    @Override
+    public int describeContents() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    @Override
+    public void writeToParcel(@NonNull Parcel parcel, int i) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+}
diff --git a/stub/src/main/java/android/system/keystore2/KeyMetadata.java b/stub/src/main/java/android/system/keystore2/KeyMetadata.java
new file mode 100644
index 0000000..9c3aa22
--- /dev/null
+++ b/stub/src/main/java/android/system/keystore2/KeyMetadata.java
@@ -0,0 +1,37 @@
+package android.system.keystore2;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import androidx.annotation.NonNull;
+
+public class KeyMetadata implements Parcelable {
+    public Authorization[] authorizations;
+    public byte[] certificate;
+    public byte[] certificateChain;
+    public KeyDescriptor key;
+    public int keySecurityLevel = 0;
+    public long modificationTimeMs = 0;
+
+    public static final Creator<KeyMetadata> CREATOR = new Creator<KeyMetadata>() {
+        @Override
+        public KeyMetadata createFromParcel(Parcel in) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+
+        @Override
+        public KeyMetadata[] newArray(int size) {
+            throw new UnsupportedOperationException("STUB!");
+        }
+    };
+
+    @Override
+    public int describeContents() {
+        throw new UnsupportedOperationException("STUB!");
+    }
+
+    @Override
+    public void writeToParcel(@NonNull Parcel parcel, int i) {
+        throw new UnsupportedOperationException("STUB!");
+    }
+}