增加算法和创建url的方法

@@ -20,49 +20,52 @@ const Authenticator = function (secret, options) {
   const TOTP_OPTIONS = this.totp_options = {
     secret: this.secret,
     encoding: options.encoding || 'base32',
-    step: options.step || 30
+    step: options.step || 30,
+    algorithm: options.algorithm || 'sha512'
   };
 
 
   /**
    * 验证token有效性
-   * @type {Authenticator.verify}
+   * @param token
    */
-  const verify = this.verify = function(token) {
+  this.verify = function(token) {
     return speakeasy.totp.verify(_.merge({token: token}, TOTP_OPTIONS));
   };
 
   /**
    * 在options.window的范围内验证token的有效性
-   * @type {Authenticator.verifyDelta}
+   * @param token
    */
-  const verifyDelta = this.verifyDelta = function(token) {
+  this.verifyDelta = function(token) {
     return speakeasy.totp.verifyDelta(_.merge({token: token}, TOTP_OPTIONS));
   };
 
   /**
    * 获取QR显示值
-   * @type {Authenticator.getOtpAuth}
+   * @param title
+   * @param issuer
+   * @return {string}
    */
-  const getOtpAuth = this.getOtpAuth = function (title, issuer) {
-    let _title = title || 'HowAreU';
-    let _issuer = encodeURIComponent(issuer || 'TOTP-KEY');
-    return `otpauth://totp/${_title}?secret=${this.secret}&issuer=${_issuer}`;
+  this.getOtpAuth = function (title, issuer) {
+    return speakeasy.otpauthURL(_.merge({ label: title, issuer: issuer }, TOTP_OPTIONS));
   };
 
   /**
    * 生成svg的QR图片内容
-   * @type {Authenticator.getQR}
+   * @param title
+   * @param issuer
+   * @return {*}
    */
-  const getQR = this.getQR = function(title, issuer) {
-    return qr.imageSync(getOtpAuth(title, issuer), { type: 'svg' });
+  this.getQR = function(title, issuer) {
+    return qr.imageSync(this.getOtpAuth(title, issuer), { type: 'svg' });
   };
 
   /**
    * 生成新的token
-   * @type {Authenticator.totp}
+   * @return {String}
    */
-  const totp = this.totp = function () {
+  this.totp = function () {
     return speakeasy.totp(_.merge({}, TOTP_OPTIONS));
   };
 

@@ -16,7 +16,8 @@ const TOTP = function (options) {
 
   const TOTP_OPTIONS = {
     encoding: options.encoding || 'base32',
-    step: options.step || 30
+    step: options.step || 30,
+    algorithm: options.algorithm || 'sha512'
   };
 
   /**

@@ -8,10 +8,9 @@ const fs = require('fs-extra');
 const path = require('path');
 
 let secret = 'vH6OdbUEjSukTqlDvW3TYdusjiOIkxRnAHNTjJewfZa5yNueG9wx1N9pJMFOmPAV';
-let authenticator = new Authenticator(secret);
-
+let authenticator = new Authenticator(secret, {algorithm: 'sha512'});
 console.log(chalk.cyan('totp的secret'));
-console.log(secret);
+console.log(secret, authenticator.totp_options);
 
 let token = process.argv[2];
 if (!token) {

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\ No newline at end of file

@@ -6,7 +6,8 @@ const TOTP = require('../lib/totp');
 const chalk = require('chalk');
 const fs = require('fs-extra');
 
-let totp = new TOTP();
+let algorithm = process.argv[2] || 'sha512';
+let totp = new TOTP({algorithm: algorithm});
 
 let secret = totp.createSecret();
 console.log(chalk.cyan('创建totp的secret'));