GitBook: [master] 3 pages modified

SUMMARY.md

@@ -1,4 +1,5 @@
 # Table of contents
 
 * [About](README.md)
+* [Usage](usage.md)
 

usage.md

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+---
+description: How to use this package ??
+---
+
+# Usage
+
+To use this package, you need to integrate it in both ends \(i.e. Frontend and Backend\).
+
+## Frontend
+
+At Frontend, integrate as follows :-
+
+{% tabs %}
+{% tab title="Initialization" %}
+```javascript
+const { Randomizer } = require("encrypted-randomizer");
+const privateKey = process.env.YOUR_AUTH_KEY;
+// set YOUR_AUTH_KEY as an enviornment variable.
+
+const setEncryption = new Randomizer(privateKey);
+```
+{% endtab %}
+
+{% tab title="Usage" %}
+```javascript
+var axios = require('axios');
+var qs = require('qs');
+var data = qs.stringify({
+  'date': 'value' 
+});
+var config = {
+  method: 'get',
+  url: 'http://your.api.host/endpoint',
+  headers: { 
+    'Authorization': ..., 
+    'Content-Type': ...,
+    'TS': setEncryption.getTs(); // Sending Timestamp of Request
+    'ERHS': await setEncryption.sendHeader(); // Sending the Encrypted Token Headers
+  },
+  data : data
+};
+
+async axios(config)
+.then(function (response) {
+  console.log(JSON.stringify(response.data));
+})
+.catch(function (error) {
+  console.log(error);
+});
+
+```
+{% endtab %}
+{% endtabs %}
+
+## Backend
+
+At Backend,  integrate as follows :-
+
+{% tabs %}
+{% tab title="Initialization" %}
+```javascript
+const { Validator } = require("encrypted-randomizer");
+const privateKey = process.env.YOUR_AUTH_KEY;
+// set same YOUR_AUTH_KEY as an enviornment variable as used above.
+
+```
+{% endtab %}
+
+{% tab title="Usage" %}
+```javascript
+const express = require('express')
+const app = express()
+const port = 3000
+
+app.get('/endpoint', (req, res) => {
+  const decryptChecker = new Validator(privateKey , req.headers.TS);
+  const verificationState = decryptChecker.verifyState(req.headers.ERHS)
+  if(verificationState == "true")
+    res.send("It Works !!!")
+  else
+    res.send("Auth Key didn't matched. Request Denied !!!")
+})
+
+app.listen(port, () => {
+  console.log(`Backend Running !!`)
+})
+```
+{% endtab %}
+{% endtabs %}
+