ec-pem/test/testReadmeExample.js

Enables `crypto.sign` and `crypto.verify` using `crypto.createECDH` generated keys

describe('documentation', () => {
  it('primary readme example should work', () => {
    const crypto = require('crypto');
    const ec_pem = require('../ec_pem');

    let alice_pem_private, alice_pem_public;
    {
      let curve = 'secp521r1'
      let alice = crypto.createECDH(curve);
      alice.generateKeys();
      alice = ec_pem(alice, curve);

      alice_pem_private = alice.encodePrivateKey();
      // console.log(alice_pem_private);

      alice_pem_public = alice.encodePublicKey();
      // console.log(alice_pem_public);
    }


    const data = Buffer.from('a message to sign');

    let signature;
    {
      const sign = crypto.createSign('sha256');
      sign.update(data);

      signature = sign.sign(alice_pem_private);
      // console.log({signature})
    }


    {
      const verify = crypto.createVerify('sha256');
      verify.update(data);

      const matched = verify.verify(alice_pem_public, signature);
      // console.log({matched})
      if (!matched)
        throw new Error("Verification failed");
    }
  })
})