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Name is Anant Dubey and the intent to create this blog is to discuss the problems and issues that developer face in the dynamics AX development and to share the new things that come up with the new version of AX.

Wednesday, November 29, 2023

Encryption And Decryption Using A Symmetric Key(AES) using x++ in D365FO

 

Encryption And Decryption Using A Symmetric Key(AES) using x++

 Encryption And Decryption Using A Symmetric Key(AES) using x++.


I received a requirement to generate an XML file with encrypted data using a symmetric key. The recipients on the other side will decrypt the text using the same symmetric key. To test this, I used a dummy value such as 'RRR'.

To achieve this, I wrote the code in C# and added the resulting DLL to my project references.


C# Code:

using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;

namespace EncryptionDecryptionUsingSymmetricKey
{
    public class AesOperation
    {
        public static string EncryptString(string key, string plainText)
        {
            byte[] iv = new byte[16];
            byte[] array;

            using (Aes aes = Aes.Create())
            {
                aes.Key = Encoding.UTF8.GetBytes(key);
                aes.IV = iv;

                ICryptoTransform encryptor = aes.CreateEncryptor(aes.Key, aes.IV);

                using (MemoryStream memoryStream = new MemoryStream())
                {
                    using (CryptoStream cryptoStream = new CryptoStream((Stream)memoryStream, encryptor, CryptoStreamMode.Write))
                    {
                        using (StreamWriter streamWriter = new StreamWriter((Stream)cryptoStream))
                        {
                            streamWriter.Write(plainText);
                        }

                        array = memoryStream.ToArray();
                    }
                }
            }

            return Convert.ToBase64String(array);// It will convert bytes to string
        }

        public static string DecryptString(string key, string cipherText)
        {
            byte[] iv = new byte[16];
            byte[] buffer = Convert.FromBase64String(cipherText); // It will convert string to bytes
using (Aes aes = Aes.Create()) { aes.Key = Encoding.UTF8.GetBytes(key); aes.IV = iv; ICryptoTransform decryptor = aes.CreateDecryptor(aes.Key, aes.IV); using (MemoryStream memoryStream = new MemoryStream(buffer)) { using (CryptoStream cryptoStream = new CryptoStream((Stream)memoryStream, decryptor, CryptoStreamMode.Read)) { using (StreamReader streamReader = new StreamReader((Stream)cryptoStream)) { return streamReader.ReadToEnd(); } } } } } } }



X++ Code:

b14ca5898a4e4133bbce2ea2315a1916

Using EncryptionDecryptionUsingSymmetricKey;

internal final class TestRunnableClass1
{
    public static void main(Args _args)
    {
        str key = "b65ff7654brt8799fghj4ed7892b6798";
 
        str	text = 'RRR';
 
        str encryptedString = AesOperation::EncryptString(key, text);
 
        info(encryptedString);
 
        str decryptedString = AesOperation::DecryptString(key, encryptedString);
 
        info(decryptedString);
    }
}
References   Ref1  Ref2 and https://sheriffayed23.blogspot.com/2023/11/encryption-and-decryption-using.html

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