Cannot read property 'key_gen' of undefined

[Rasika9596]

Hello,

I've installed bls-signatures using 'npm i bls-signatures --save' and using the below code,

const loadBls = require("bls-signatures");
 const BLS = await loadBls();
    var seed = Uint8Array.from([
      0, 50, 6, 244, 24, 199, 1, 25, 52, 88, 192, 19, 18, 12, 89, 6, 220, 18,
      102, 58, 209, 82, 12, 62, 89, 110, 182, 9, 44, 20, 254, 22,
    ]);
    var sk = BLS.AugSchemeMPL.key_gen(seed);
    console.log(sk);
    var pk = sk.get_g1();
    console.log(pk);

But I'm getting this error,

package.json,

Could anyone please help here?

[Rasika9596]

Hello,

Can anyone please help me here?

[hoffmang9]

The version on npm is quite out of date and we are attempting to rectify that. The version direct from this repository is what you should use.

[ChiaMineJP]

I propose you 2 options. (Reference: https://github.com/Chia-Mine/bls-signatures/tree/npm)

1. Build npm module for yourself

0. Check node/cmake/emscripten exists in your environment or install them if they are missing.
   See https://emscripten.org/docs/getting_started/downloads.html for emscripten installation.
   For my current environment, I use

   • Ubuntu Ubuntu 20.04.2
   • emsdk 2.0.23 (77b065ace39e6ab21446e13f92897f956c80476a)
   • node-14.15.5-64bit
   • cmake 3.16.3

1. Git clone from the trusted source code

   cd <directory you like>
   git clone https://github.com/Chia-Network/bls-signatures
   cd bls-signatures
   git checkout f9db7faa370c4743e48be8a9823232e4d906c4d0 # You will be warned by git as it is `detached-state` but don't worry.

2. Build js-binding

   mkdir js_build && cd js_build
   cmake ../ -DCMAKE_TOOLCHAIN_FILE=/PATH-TO-EMSDK-ROOT/emsdk/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake
   cmake --build . --

3. Check out the products

   
   ls -l js-bindings/

You will see output like this.

The files should be the same as contents of this branch except for this README

#

drwxrwxr-x 4 chiaminejp chiaminejp 4096 June 16 11:09 CMakeFiles

-rw-rw-r-- 1 chiaminejp chiaminejp 16817 June 16 11:09 Makefile

-rw-rw-r-- 1 chiaminejp chiaminejp 6591 June 16 11:09 README.md

-rw-rw-r-- 1 chiaminejp chiaminejp 4091 June 16 11:09 blsjs.d.ts

-rw-rw-r-- 1 chiaminejp chiaminejp 47671 June 16 11:10 blsjs.js

-rwxrwxr-x 1 chiaminejp chiaminejp 248515 June 16 11:10 blsjs.wasm

-rw-rw-r-- 1 chiaminejp chiaminejp 1002 June 16 11:09 cmake_install.cmake

-rw-rw-r-- 1 chiaminejp chiaminejp 100600 June 16 11:09 package-lock.json

-rw-rw-r-- 1 chiaminejp chiaminejp 1290 June 16 11:09 package.json

drwxrwxr-x 2 chiaminejp chiaminejp 4096 June 16 11:09 tests

4. You can install the npm by path such as:  
`npm install /path/to/the/js-bindings` in your project folder.

## 2. Install my npm which is compatible to bls-signatures at commit f9db7faa370c4743e48be8a9823232e4d906c4d0

Just execute command like this:
```shell
npm install @chiamine/bls-signatures # or yarn add @chiamine/bls-signatures

[Rasika9596]

Thank you so much! I'll give it a try and get back.

[github-actions[bot]]

'This issue has been flagged as stale as there has been no activity on it in 14 days. If this issue is still affecting you and in need of review, please update it to keep it open.'

[github-actions[bot]]

'This issue was automatically closed because it has been flagged as stale and subsequently passed 7 days with no further activity.'