JavaScript SDK

npm install @sahyadrinet/web3.js

import { keypair } from '@sahyadrinet/web3.js';

const { publicKey, secretKey } = keypair();

console.log('Public Key:', publicKey.length, 'bytes');   // 1952
console.log('Secret Key:', secretKey.length, 'bytes');   // 4032

import { keypair, sign, verify } from '@sahyadrinet/web3.js';

const { publicKey, secretKey } = keypair();
const message = new TextEncoder().encode('Hello Sahyadri!');
const signature = sign(secretKey, message);

console.log('Signature:', signature.length, 'bytes');    // 3309
console.log('Valid:', verify(publicKey, signature, message)); // true

import { keypair, sign, verify } from '@sahyadrinet/web3.js';

const { publicKey, secretKey } = keypair();
const originalMsg = new TextEncoder().encode('Send 100 KANA');
const signature = sign(secretKey, originalMsg);

// Original message verifies correctly
console.log(verify(publicKey, signature, originalMsg));       // true

// Tampered message FAILS verification
const tamperedMsg = new TextEncoder().encode('Send 1000 KANA');
console.log(verify(publicKey, signature, tamperedMsg));       // false

import { keypair, pubkeyToAddress } from '@sahyadrinet/web3.js';

const { publicKey } = keypair();
const address = pubkeyToAddress(publicKey);
console.log(address); // csm1sxh5at56p0c6s9gwtj0mumwcly258gexk5zxp0xvj6

import { keypair, generateDidIdentifier } from '@sahyadrinet/web3.js';

const { publicKey } = keypair();
const did = `did:sahyadri:${generateDidIdentifier(publicKey)}`;

console.log(did);
// did:sahyadri:FWSFYxictWRNYQNeyFvy4ciH2LDKqgkR

import {
  keypair, pubkeyToAddress, generateDidIdentifier,
  CrestBuilder, createDidCommService
} from '@sahyadrinet/web3.js';

const { publicKey } = keypair();
const address = pubkeyToAddress(publicKey);
const did = `did:sahyadri:${generateDidIdentifier(publicKey)}`;
const pkHex = Buffer.from(publicKey).toString('hex');

const doc = CrestBuilder.new(did, address, pkHex)
  .addAuthentication({
    id: '#auth-key-1',
    type: 'MLDSA65VerificationKey2025',
    publicKeyHex: pkHex
  })
  .addService(createDidCommService('https://node.sahyadri.network/didcomm'))
  .setVersion(1)
  .build();

import { Wallet } from '@sahyadrinet/web3.js';

const wallet = new Wallet('ws://127.0.0.1:27110');
await wallet.connect();
wallet.create();

const balance = await wallet.getBalance();
const txId = await wallet.send('csm1srecipient...', 100000);

<script type="module">
  import { keypair } from 'https://esm.sh/@sahyadrinet/web3.js';
  const { publicKey } = keypair();
  console.log('Keys generated in browser!');
</script>