AesEncryption

Tarun

3y1.1kASP.NET

how to Convert the JSon Object into Aes256

4 Replies

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Naimish Makwana3y ago

Accepted answer

Try below code:

using System;
using System.Security.Cryptography;
using Newtonsoft.Json;

namespace ExampleNamespace
{
    class ExampleClass
    {
        static void Main(string[] args)
        {
            // Create a sample JSON object
            var jsonObject = new { Name = "John Doe", Age = 30, City = "New York" };
            
            // Serialize the JSON object to a string
            var jsonString = JsonConvert.SerializeObject(jsonObject);
            
            // Generate a random key and IV
            var key = new byte[32];
            var iv = new byte[16];
            using (var aes = new AesManaged())
            {
                aes.GenerateKey();
                aes.GenerateIV();
                key = aes.Key;
                iv = aes.IV;
            }
            
            // Convert the JSON string to a byte array
            var jsonBytes = System.Text.Encoding.UTF8.GetBytes(jsonString);
            
            // Encrypt the JSON byte array
            byte[] encryptedBytes;
            using (var aes = new AesManaged())
            {
                aes.Key = key;
                aes.IV = iv;
                var encryptor = aes.CreateEncryptor();
                encryptedBytes = encryptor.TransformFinalBlock(jsonBytes, 0, jsonBytes.Length);
            }
            
            // Convert the encrypted bytes to a base64 string
            var encryptedString = Convert.ToBase64String(encryptedBytes);
            
            Console.WriteLine("Encrypted JSON string: " + encryptedString);
            Console.ReadLine();
        }
    }
}

Tuhin Paul3y ago

To do it in Javascript, you can use the crypto-js library which provides encryption and decryption functions.

const CryptoJS = require("crypto-js");

// Your JSON object
const jsonObj = {
  name: "John",
  age: 30
};

// Convert JSON to string
const jsonString = JSON.stringify(jsonObj);

// Generate a random 256-bit key
const key = CryptoJS.lib.WordArray.random(32);

// Generate a random 128-bit IV
const iv = CryptoJS.lib.WordArray.random(16);

// Encrypt the JSON string with AES-256 CBC mode
const encrypted = CryptoJS.AES.encrypt(jsonString, key, { iv: iv }).toString();

console.log("Encrypted:", encrypted);

// Decrypt the encrypted string
const decrypted = CryptoJS.AES.decrypt(encrypted, key, { iv: iv }).toString(CryptoJS.enc.Utf8);

console.log("Decrypted:", decrypted);

In this example, the CryptoJS library is used to generate a random 256-bit key and a random 128-bit IV. Then, the AES.encrypt() function is used to encrypt the JSON string with the generated key and IV using the AES-256 CBC mode. The resulting encrypted data is then printed to the console.

Tarun3y ago
Bro what about decrypt
Jay Krishna Reddy3y ago
To convert a JSON object into an AES256 encrypted format in ASP.NET, you can follow these general steps:
1. Serialize the JSON object: Use a JSON serialization library to convert the JSON object into a string representation.
2. Convert the string to bytes: Use a byte array to store the serialized JSON string.
3. Generate an AES key: Use a cryptography library to generate a 256-bit AES key.
4. Create an AES encryptor: Use the AES key to create an AES encryptor object.
5. Encrypt the byte array: Use the AES encryptor to encrypt the byte array containing the serialized JSON string.
6. Convert the encrypted byte array to a Base64 string: Use a Base64 encoding library to convert the encrypted byte array to a Base64-encoded string.
7. Store the encrypted data: Store the Base64-encoded string in the database or wherever you need to store the encrypted data.
Here's some sample code that demonstrates these steps using the built-in .NET cryptography library:
```
using System.Security.Cryptography;
using System.Text;
using System.Web.Script.Serialization;

// Serialize the JSON object
var serializer = new JavaScriptSerializer();
var json = serializer.Serialize(yourJsonObject);

// Convert the string to bytes
var bytes = Encoding.UTF8.GetBytes(json);

// Generate an AES key
var aes = new AesCryptoServiceProvider();
aes.KeySize = 256;
aes.GenerateKey();

// Create an AES encryptor
var encryptor = aes.CreateEncryptor();

// Encrypt the byte array
var encryptedBytes = encryptor.TransformFinalBlock(bytes, 0, bytes.Length);

// Convert the encrypted byte array to a Base64 string
var encryptedBase64 = Convert.ToBase64String(encryptedBytes);

// Store the encrypted data
// (e.g. store the encryptedBase64 string in the database)
```
Note that you will need to ensure that the key used for encryption is kept secure and not shared with unauthorized parties.