fingera / react-native-secp256k1

secp256k1

react-native-secp256k1

Getting started

$ npm install react-native-secp256k1 --save

Mostly automatic installation

$ react-native link react-native-secp256k1

Manual installation

iOS

1. In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
2. Go to node_modules ➜ react-native-secp256k1 and add RNSecp256k1.xcodeproj
3. In XCode, in the project navigator, select your project. Add libRNSecp256k1.a to your project's Build Phases ➜ Link Binary With Libraries
4. Run your project (Cmd+R)<

Android

1. Open up android/app/src/main/java/[...]/MainActivity.java

• Add import com.reactlibrary.RNSecp256k1Package; to the imports at the top of the file
• Add new RNSecp256k1Package() to the list returned by the getPackages() method

2. Append the following lines to android/settings.gradle:

   include ':react-native-secp256k1'
   project(':react-native-secp256k1').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-secp256k1/android')
   

3. Insert the following lines inside the dependencies block in android/app/build.gradle:

     compile project(':react-native-secp256k1')
   

Usage

import secp256k1 from 'react-native-secp256k1';

async function main() {
	const privA = await secp256k1.ext.generateKey();
	const privB = await secp256k1.ext.generateKey();

	const pubA = await secp256k1.computePubkey(privA, true);
	const pubB = await secp256k1.computePubkey(privB, true);

	// sign verify
	const data = "1H1SJuGwoSFTqNI8wvVWEdGRpBvTnzLckoZ1QTF7gI0";
	const sigA = await secp256k1.sign(data, privA);
	console.log("verify: ", await secp256k1.verify(data, sigA, pubA));

	// ecdh && aes256
	const encryped1 = await secp256k1.ext.encryptECDH(privA, pubB, "Hello World");
	const decryped1 = await secp256k1.ext.decryptECDH(privB, pubA, encryped1);
	console.log(decryped1);

	// all: https://github.com/fingera/react-native-secp256k1-demo
}

main().then(() => {
	console.log("Done");
}).catch((err) => {
	console.error(err);
});

react-native-secp256k1's Issues

how to comiple external/secp256k1 to library for android and ios?

Issues with the latest package published on NPM

Hi and thanks for implementing the secp256k1 curve on React Native.

We have found an issue on this package on NPM, the external/ folder is not published properly. see https://unpkg.com/browse/react-native-secp256k1/

Thanks

[up to date] I have a PR to submit

Hey,

I updated the lib so that it is compatible with last versions of RN. Would you add it to this repo and publish it in package manage?

Since it changes the code structure I created a new branch called v1.1 https://github.com/Slals/react-native-secp256k1/tree/v1.1

It doesn't change de core code, it fixes imports and build configs.

I exported the source for iOS in a pod you can find here https://github.com/Slals/bitcoincore-pod-specs

Let me know! If you don't respond I will submit a new package, but it's best to keep it under your name since it's your code.

base64.m EXC_BAD_ACCESS

Hello.
I got an error when i try to encode big sized string (30 KB).

Please publish latest to cocoapods

Receiving an error when installing:
ERROR | attributes: Missing required attribute "homepage"

I see it has been update on Github but not yet published. Thanks!