restore removed files

Author: Tolsi

android/.gitignore

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+/build

android/build.gradle

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+buildscript {
+    repositories {
+        jcenter()
+        google()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.1.0'
+    }
+}
+
+apply plugin: 'com.android.library'
+apply plugin: 'maven'
+apply plugin: 'signing'
+
+archivesBaseName = "curve25519-android"
+version          = version_number
+group            = group_info
+
+android {
+    compileSdkVersion 21
+    buildToolsVersion "21.1.2"
+
+    sourceSets {
+        main {
+            jniLibs.srcDirs = ['libs']
+        }
+    }
+
+    libraryVariants.all { variant ->
+        variant.outputs.each { output ->
+            def outputFile = output.outputFile
+            if (outputFile != null && outputFile.name.endsWith('.aar')) {
+                def fileName = "${archivesBaseName}-${version}.aar"
+                output.outputFile = new File(outputFile.parent, fileName)
+            }
+        }
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    compile project(':java')
+
+    androidTestCompile (project(":tests")) {
+        exclude module: 'junit'
+    }
+}
+
+signing {
+    required { has("release") && gradle.taskGraph.hasTask("uploadArchives") }
+    sign configurations.archives
+}
+
+uploadArchives {
+    configuration = configurations.archives
+    repositories.mavenDeployer {
+        beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }
+
+        repository(url: sonatypeRepo) {
+            authentication(userName: whisperSonatypeUsername, password: whisperSonatypePassword)
+        }
+
+        pom.project {
+            name 'curve25519-android'
+            packaging 'aar'
+            description 'Curve25519 library for Android'
+            url 'https://github.com/WhisperSystems/curve25519-java'
+
+            scm {
+                url 'scm:git@github.com:WhisperSystems/curve25519-java.git'
+                connection 'scm:git@github.com:WhisperSystems/curve25519-java.git'
+                developerConnection 'scm:git@github.com:WhisperSystems/curve25519-java.git'
+            }
+
+            licenses {
+                license {
+                    name 'GPLv3'
+                    url 'https://www.gnu.org/licenses/gpl-3.0.txt'
+                    distribution 'repo'
+                }
+            }
+
+            developers {
+                developer {
+                    name 'Trevor Perrin'
+                    name 'Moxie Marlinspike'
+                }
+            }
+        }
+    }
+}
+
+task installArchives(type: Upload) {
+    description "Installs the artifacts to the local Maven repository."
+    configuration = configurations['archives']
+    repositories {
+        mavenDeployer {
+            repository url: "file://${System.properties['user.home']}/.m2/repository"
+        }
+    }
+}
+

android/jni/Android.mk

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+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE    := libcurve25519-donna
+LOCAL_SRC_FILES := curve25519-donna.c
+
+include $(BUILD_STATIC_LIBRARY)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE     := libcurve25519-ref10
+LOCAL_SRC_FILES  := $(wildcard ed25519/*.c) $(wildcard ed25519/additions/*.c) \
+                    $(wildcard ed25519/additions/generalized/*.c) $(wildcard ed25519/nacl_sha512/*.c) \
+		    ed25519/tests/internal_fast_tests.c
+
+LOCAL_C_INCLUDES := ed25519/nacl_includes ed25519/additions ed25519/additions/generalized ed25519/tests ed25519/sha512 ed25519
+
+include $(BUILD_STATIC_LIBRARY)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE     := libcurve25519
+LOCAL_SRC_FILES  := curve25519-jni.c
+LOCAL_C_INCLUDES := ed25519/additions ed25519/additions/generalized ed25519/tests
+
+LOCAL_STATIC_LIBRARIES := libcurve25519-donna libcurve25519-ref10
+
+include $(BUILD_SHARED_LIBRARY)
+

android/jni/Application.mk

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+APP_ABI := armeabi armeabi-v7a x86 mips arm64-v8a x86_64