wasm lib integration using webview

android/app/build.gradle

@@ -122,6 +122,10 @@ def jscFlavor = 'org.webkit:android-jsc-intl:+'
 def enableHermes = project.ext.react.get("enableHermes", false);
 
 android {
+    aaptOptions {
+       noCompress "wasm"
+    }
+
     ndkVersion rootProject.ext.ndkVersion
 
     compileSdkVersion rootProject.ext.compileSdkVersion

android/app/src/main/AndroidManifest.xml

@@ -1,4 +1,4 @@
-  
+
   <manifest xmlns:android="http://schemas.android.com/apk/res/android"
   android:installLocation="auto"
   package="com.mojitowallet">
@@ -67,6 +67,7 @@
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
+                <action android:name="android.intent.action.DOWNLOAD_COMPLETE"/>
             </intent-filter>
         </activity>
 

android/link-assets-manifest.json

@@ -0,0 +1,21 @@
+{
+  "migIndex": 1,
+  "data": [
+    {
+      "path": "assets/fonts/Montserrat-Bold.ttf",
+      "sha1": "bf257f6f91f6522eccea6d4f28d57bb118c98729"
+    },
+    {
+      "path": "assets/fonts/Montserrat-Light_0.ttf",
+      "sha1": "08e510137064a3c9859b71cff5b999fe8c351e67"
+    },
+    {
+      "path": "assets/fonts/Montserrat-SemiBold.ttf",
+      "sha1": "4ef29a9163b56df34a3486b98b24be3a3d0cdca6"
+    },
+    {
+      "path": "assets/mintlayer/wasm_crypto_bg.wasm",
+      "sha1": "c146af2a955dff3172aca7585e744b13d58a0f5d"
+    }
+  ]
+}

blue_modules/mintlayer/@mintlayerlib-js/README.md

@@ -0,0 +1,75 @@
+## Basic wasm bindings for cryptography
+
+##### Note: This was tested on x86_64 Linux, and may not work on other platforms. It didn't work on M1 Mac (particularly the build. A pre-built wasm binary works fine on a browser).
+
+### To run in a web browser
+
+Make sure you have wasm-pack and the wasm32-unknown-unknown target installed:
+
+```
+rustup target add wasm32-unknown-unknown
+cargo install wasm-pack
+```
+
+Also make sure you have `clang` installed. It's required.
+
+To build the wasm package from the crate, run (in the wasm Cargo.toml directory):
+
+```
+wasm-pack build --target web
+```
+
+**Note for mac users**: `llvm` installed by Xcode doesn't support wasm targets, but the homebrew version does, these commands may make it possible to compile to wasm targets. Note that using these commands could have other side effects on your toolchain. Please consider researching the clang toolchain and how it works before using them. We do not recommend copying and pasting commands without fully understanding the side-effects.
+
+```
+brew install llvm
+AR=/opt/homebrew/opt/llvm/bin/llvm-ar CC=/opt/homebrew/opt/llvm/bin/clang wasm-pack build --target web
+```
+
+To test the wasm binary. First, install `http-server` web server (feel free to use any other web-server of your choosing):
+
+```
+cargo install http-server
+```
+
+Then run the http server, and then choose the file `js-bindings/index.html`:
+
+```
+http-server --port 8080 --verbose
+```
+
+If you're using a remote server, either tunnel to port 8080, or expose that port and run this (assuming you understand the security risks):
+
+```
+http-server --port 8080 --host 0.0.0.0 --verbose
+```
+
+The ported wasm functions are exported to the file `js-bindings/index.js` and used in the file `js-bindings/index.html` with a basic test/example in them using JavaScript. Use your browser's console to see the output.
+
+### To run in Node.js
+
+Make sure you have wasm-pack and the wasm32-unknown-unknown target installed:
+
+```
+rustup target add wasm32-unknown-unknown
+cargo install wasm-pack
+```
+
+Also make sure you have `clang` installed. It's required.
+
+To build the wasm package from the crate, run (in the wasm Cargo.toml directory):
+
+```
+wasm-pack build --target nodejs
+```
+
+Finally, to run the example, run:
+
+```
+node js-bindings/node-entry.js
+```
+
+### Further documentation
+
+- https://developer.mozilla.org/en-US/docs/WebAssembly/Rust_to_wasm
+- https://rustwasm.github.io/wasm-bindgen/introduction.html

blue_modules/mintlayer/@mintlayerlib-js/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "wasm-crypto",
+  "version": "0.3.0",
+  "license": "MIT",
+  "files": [
+    "wasm_crypto_bg.wasm",
+    "wasm_crypto.js",
+    "wasm_crypto.d.ts"
+  ],
+  "module": "wasm_crypto.js",
+  "types": "wasm_crypto.d.ts",
+  "sideEffects": [
+    "./snippets/*"
+  ]
+}