2017-06-27 17:02:20 +08:00
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# jsotp
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`jsotp`是一个用来生成用来生成及验证一次性密码的js模块,一次性密码通常用来在web应用或者其他登录系统中作为二步验证或多步验证使用。
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2017-06-27 17:13:28 +08:00
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该模块基于 [RFC4226](https://tools.ietf.org/html/rfc4226) (HOTP:基于计数器的一次性密码算法)和 [RFC6238](https://tools.ietf.org/html/rfc6238)(TOTP:基于时间的一次性密码算法)实现
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2017-06-27 17:02:20 +08:00
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### 功能
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* 随机生成base32加密的字符串
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* 将base32加密后的字符串生成otpauth链接,可用来生成二维码
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* 创建可验证的HOTP对象
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* 验证HOTP密码
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* 创建可验证的TOTP对象
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* 验证TOTP密码
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### 安装
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2017-06-28 17:15:37 +08:00
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```shell
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npm install jsotp
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```
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2017-06-27 17:02:20 +08:00
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### 模块
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全部模块支持:
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2017-06-28 17:15:37 +08:00
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```javascript
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let jsotp = require('jsotp');
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```
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2017-06-27 17:02:20 +08:00
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仅 `Base32` 模块支持:
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2017-06-28 17:15:37 +08:00
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```javascript
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let jsotp = require('jsotp/base32');
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```
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2017-06-27 17:02:20 +08:00
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仅 `HOTP` 模块支持:
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2017-06-28 17:15:37 +08:00
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```javascript
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let jsotp = require('jsotp/hotp');
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```
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2017-06-27 17:02:20 +08:00
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仅 `TOTP` 模块支持:
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2017-06-28 17:15:37 +08:00
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```javascript
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let jsotp = require('jsotp/totp');
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```
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2017-06-27 17:02:20 +08:00
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### 使用
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#### 基于时间的OTP
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```javascript
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2017-06-27 17:13:28 +08:00
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// import
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2017-06-27 17:02:20 +08:00
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let jsotp = require('jsotp');
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2017-06-27 17:13:28 +08:00
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// Create TOTP object
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2017-06-29 15:32:08 +08:00
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let totp = jsotp.TOTP('BASE32ENCODEDSECRET');
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2017-06-27 17:13:28 +08:00
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totp.now(); // => 432143
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2017-06-27 17:13:28 +08:00
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// Verify for current time
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totp.verify(432143); // => true
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2017-06-27 17:13:28 +08:00
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// Verify after 30s
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totp.verify(432143); // => false
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```
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#### 基于计数器的OTP
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```javascript
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2017-06-27 17:13:28 +08:00
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// import
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2017-06-27 17:02:20 +08:00
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let jsotp = require('jsotp');
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2017-06-27 17:13:28 +08:00
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// Create HOTP object
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let hotp = jsotp.HOTP('BASE32ENCODEDSECRET');
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hotp.at(0); // => 432143
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hotp.at(1); // => 231434
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hotp.at(2132); // => 242432
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2017-06-27 17:13:28 +08:00
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// Verify with a counter
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hotp.verify(242432, 2132); // => true
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hotp.verify(242432, 2133); // => false
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2017-06-27 17:02:20 +08:00
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```
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#### 生成随机base32加密字符串
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```javascript
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2017-06-27 17:13:28 +08:00
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// import
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2017-06-27 17:02:20 +08:00
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let jsotp = require('jsotp');
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2017-06-27 17:13:28 +08:00
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// Generate
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let b32_secret = jsotp.Base32.random_gen();
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```
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### 接口
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2017-06-30 15:47:20 +08:00
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#### • [jsotp.Base32.random_gen(length)](https://github.com/LanceGin/jsotp/blob/master/src/base32.js#L32)
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2017-06-30 15:47:20 +08:00
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param: length
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type: int
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default: 16
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return: String
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desc: the length of random base32 encoded string.
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2017-06-30 15:47:20 +08:00
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#### • <del>jsotp.Util.url_gen()</del>
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2017-06-30 15:47:20 +08:00
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#### • [jsotp.TOTP.now()](https://github.com/LanceGin/jsotp/blob/master/src/totp.js#L38)
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return: String
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desc: get the one-time password with current time.
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#### • [jsotp.TOTP.verify(totp)](https://github.com/LanceGin/jsotp/blob/master/src/totp.js#L70)
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param: totp
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type: string
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return: Boolean
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desc: verify the totp code.
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2017-06-30 15:47:20 +08:00
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#### • [jsotp.HOTP.at(counter)](https://github.com/LanceGin/jsotp/blob/master/src/hotp.js#L24)
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2017-06-30 15:47:20 +08:00
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param: counter
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type: int
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return: String
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desc: generate one-time password with counter.
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#### • [jsotp.HOTP.verify(hotp, count)](https://github.com/LanceGin/jsotp/blob/master/src/hotp.js#L50)
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param: hotp
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type: string
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param: count
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type: int
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return: Boolean
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desc: verify the hotp code.
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2017-06-27 17:02:20 +08:00
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2017-06-28 17:15:37 +08:00
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### 开发
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* 克隆代码并安装依赖
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```shell
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git clone git@github.com:LanceGin/jsotp.git
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npm install
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```
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* 在`src/`文件夹中进行源码编写,执行下面命令将es6代码编译成es2015,命令会生成一个`lib/`本地文件夹。
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```shell
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npm run build
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```
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2017-06-29 15:32:08 +08:00
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* 单元测试
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```shell
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npm test
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```
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2017-06-27 17:02:20 +08:00
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### [README](../README.md)
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