using System;

using System.IO;

using System.Linq;

using System.Security.Cryptography;

using System.Text;

​

class Program

{

    static void Main()

    {

        // Replace these values with your actual encrypted data, password, salt, and iteration count

        var encryptedText = "pr8X6SKYQ3o4AsYFB9+64MEcjyehBVS6ELjrFCEtk1zPv7SY5X/DlLalk/9nFNJHb276ioEJ3xNIlDd3+fNYy2DPGz6pxQ5Oko+mBTRnMxTenEytUUbVNNCh05nP9Uzm";

        var appPassword = "5eLLinG-PL@tf0rm_pr*duC7!";

        var opsPassword = "TestOps123!";

        var opsPasswordBytes = Encoding.Default.GetBytes(opsPassword);

        var appPasswordBytes = Encoding.Default.GetBytes(appPassword);

        var password = BitConverter.ToString(new HMACSHA256(opsPasswordBytes).ComputeHash(appPasswordBytes)).Replace("-", "").ToLower();

        var encryptedTextBytes = Convert.FromBase64String(encryptedText);

        var saltBytes = encryptedTextBytes.Take(16).ToArray();

        var encryptedValueBytes = encryptedTextBytes.Skip(16).ToArray();

        using (Rfc2898DeriveBytes pbkdf2 = new Rfc2898DeriveBytes(password, saltBytes, 1000))

        {

            byte[] key = pbkdf2.GetBytes(16); // Adjust key size as needed (16 bytes for AES-128)

            byte[] iv = pbkdf2.GetBytes(16);  // Adjust IV size as needed (16 bytes for AES-128)

            using (Aes aesAlg = Aes.Create())

            {

                aesAlg.BlockSize = 128;

                aesAlg.Key = key;

                aesAlg.IV = iv;

                aesAlg.Mode = CipherMode.CBC;

                aesAlg.Padding = PaddingMode.PKCS7;

​

                using (MemoryStream msDecrypt = new MemoryStream(encryptedTextBytes))

                {

                    using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, aesAlg.CreateDecryptor(), CryptoStreamMode.Read))

                    {

                        using (StreamReader srDecrypt = new StreamReader(csDecrypt))

                        {

                            Console.WriteLine(srDecrypt.ReadToEnd());

                        }

                    }

                }

            }

        }

    }

}