PEM routines:PEM_read_bio:no start line Error

[ailadson]

//server.js

const nodeJWT = require('node-jwk');
const njwt = require('njwt');

app.get('/cypress-auth', (req, res) => {
  const config = JSON.parse(fs.readFileSync(process.env.CYPRESS_CONFIG_FILEPATH, 'utf8'));
  const keySet = nodeJWT.JWKSet.fromObject(config.keySet);
  const jwk = keySet.findKeyById(config.kid);
  // console.log(keySet)
  const keyPEM = jwk.key.toPublicKeyPEM();
  const jwt = njwt.create(config.claims, keyPEM, jwk.alg);
  res.json({ access_token: jwt.compact() });
});

My keySet objects have the following fields:

• "alg"
• "kty"
• "use"
• "x5c"
• "n"
• "e"
• "kid"
• "x5t"

I get the following error:

Error: error:0906D06C:PEM routines:PEM_read_bio:no start line
    at Sign.sign (internal/crypto/sig.js:85:26)
    at Jwt.sign (/Users/.../project_root/node_modules/njwt/index.js:228:63)
    at Jwt.compact (/Users/.../project_root/node_modules/njwt/index.js:250:29)

Any ideas?

[HyperBrain]

@ailadson it seems that njwt somehow has trouble reading the PEM. Can you dump the pem and check it with OpenSSL directly? Maybe you get something that hints to the issue?