43 lines
1.1 KiB
JavaScript
43 lines
1.1 KiB
JavaScript
var crypto = require('crypto');
|
|
|
|
/**
|
|
* Create token by uid. Encrypt uid and timestamp to get a token.
|
|
*
|
|
* @param {String} uid user id
|
|
* @param {String|Number} timestamp
|
|
* @param {String} pwd encrypt password
|
|
* @return {String} token string
|
|
*/
|
|
module.exports.create = function(uid, timestamp, pwd){
|
|
var msg = uid + '|' + timestamp;
|
|
var cipher = crypto.createCipher('aes256', pwd);
|
|
var enc = cipher.update(msg, 'utf8', 'hex');
|
|
enc += cipher.final('hex');
|
|
return enc;
|
|
};
|
|
|
|
/**
|
|
* Parse token to validate it and get the uid and timestamp.
|
|
*
|
|
* @param {String} token token string
|
|
* @param {String} pwd decrypt password
|
|
* @return {Object} uid and timestamp that exported from token. null for illegal token.
|
|
*/
|
|
module.exports.parse = function(token, pwd){
|
|
var decipher = crypto.createDecipher('aes256', pwd);
|
|
var dec;
|
|
try{
|
|
dec = decipher.update(token, 'hex', 'utf8');
|
|
dec += decipher.final('utf8');
|
|
} catch(err){
|
|
console.error('[token] fail to decrypt token. %j', token);
|
|
return null;
|
|
}
|
|
var ts = dec.split('|');
|
|
if(ts.length !== 2){
|
|
// illegal token
|
|
return null;
|
|
}
|
|
return {uid: ts[0], timestamp: Number(ts[1])};
|
|
};
|