jwt

https://velopert.com/2389

https://victorydntmd.tistory.com/116

const header = {
    "typ" : "JWT",
    "alg" : "HS256"
};
 
//https://nodejs.org/dist/v6.0.0/docs/api/buffer.html#buffer_class_method_buffer_from_str_encoding
// (node:4148) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please
// use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
var buf = Buffer.from(JSON.stringify(header));
var encoedHeader = buf.toString('base64');
 
console.log('header: ', encoedHeader);
 
const payload = {
    "iss": "velopert.com",
    "exp": "1485270000000",
    "https://velopert.com/jwt_claims/is_admin": true,
    "userId": "11028373727102",
    "username": "velopert"
};
 
const encodedPayload = Buffer.from(JSON.stringify(payload)).toString('base64').replace('=', '');
console.log('payload: ', encodedPayload);
 
 
const crypto = require('crypto');
const signature = crypto.createHmac('sha256', 'secret').update(encoedHeader + '.' + encodedPayload).digest('base64').replace('=', '');
console.log('signature: ' , signature);

PS D:\workspace\node\study-11> node test.js

header:  eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9

payload:  eyJpc3MiOiJ2ZWxvcGVydC5jb20iLCJleHAiOiIxNDg1MjcwMDAwMDAwIiwiaHR0cHM6Ly92ZWxvcGVydC5jb20vand0X2NsYWltcy9pc19hZG1pbiI6dHJ1ZSwidXNlcklkIjoiMTEwMjgzNzM3MjcxMDIiLCJ1c2VybmFtZSI6InZlbG9wZXJ0In0

signature:  WE5fMufM0NDSVGJ8cAolXGkyB5RmYwCto1pQwDIqo2w

https://jwt.io/