pairing library mcl for Android (updated fork)

This repository is a sample of mcl for Android.

It includes for arm64-v8a and armeabi-v7a:

• prebuilt gmp-android
• prebuilt openssl-android

Test environment

• Pixel 1
• Android Studio

Download

Start in directory for current git mcladt

 cd ..
 git clone git://github.com/herumi/mcl
 git clone git://github.com/herumi/cybozulib
 cd mcladt

/mcl
/cybozulib
/mcladt/
    /gmp-android
    /openssl-android
    /mcladt

Preparation

Install Java JDK. Set ANDROID_HOME and apend %ANDROID_HOME%\ndk-bundle, Java to the PATH as the followings (path for prebuilt depends on platform, example is for macOS):

set ANDROID_HOME=<android>
set ANDROID_NDK_HOME=%ANDROID_HOME%\ndk-bundle
set PATH=%PATH%:%ANDROID_HOME%\tools:%ANDROID_HOME%\platform-tools:%ANDROID_NDK_HOME%\toolchains\x86_64-4.9\prebuilt\darwin-x86_64\bin:%ANDROID_NDK_HOME%:<Java-jdk>\bin:<Ant>\bin

build .so files

To just build the .so files go to directory mcladt and run:

ndk-build

build android example app

Install Java JDK and Apache Ant. Set ant to the PATH.

Set PATH=%PATH%:<Ant>\bin

To build the android app for tests

ndk-build
ant debug
adb install bin/MainActivity-debug.apk

Java sample code

At first, call once

System.loadLibrary("c++_shared");
System.loadLibrary("gmp");
System.loadLibrary("gmpxx");
System.loadLibrary("mcl_bn256");

and use Bn256.* functions. See JNI for mcl.

BLSsignature() in MainActivity.java is a BLS signature sample.

C++ sample

At first, call once

System.loadLibrary("c++_shared");
System.loadLibrary("gmp");
System.loadLibrary("gmpxx");
System.loadLibrary("mcladt");

bn256_sample() in jni/mcl/mcladt.cpp is a pairing sample.