Sendin ID parameter in encrypted form

Question

How can we Send the ID parameter in encrypted form?? in

below code:-

public  GetHelpVideo(int ID)
{
    try
    {
        HelpContent obj = db.HelpContents.Find(ID);
        string FileName = string.Empty;
        FileName = obj.FileName;
        if (!string.IsNullOrEmpty(FileName))
        {
        }

Naimish Makwana · Answer

You can use AES algorithm for this. Example: using System; using System.IO; using System.Security.Cryptography; using System.Text; public class SampleClass { private string secretKey = "mySecretKey12345"; private string iv = "1234567890123456"; public void GetHelpVideo(int ID) { // Encrypt the ID parameter byte[] idBytes = BitConverter.GetBytes(ID); Aes aesAlg = Aes.Create(); aesAlg.Key = Encoding.UTF8.GetBytes(secretKey); aesAlg.IV = Encoding.UTF8.GetBytes(iv); MemoryStream msEncrypt = new MemoryStream(); CryptoStream csEncrypt = new CryptoStream(msEncrypt, aesAlg.CreateEncryptor(), CryptoStreamMode.Write); csEncrypt.Write(idBytes, 0, idBytes.Length); csEncrypt.FlushFinalBlock(); csEncrypt.Close(); string encryptedID = Convert.ToBase64String(msEncrypt.ToArray()); // Use the encrypted ID to retrieve the HelpContent object HelpContent obj = db.HelpContents.Find(DecryptID(encryptedID)); // ... } private int DecryptID(string encryptedID) { // Decrypt the encrypted ID byte[] encryptedIdBytes = Convert.FromBase64String(encryptedID); Aes aesAlg = Aes.Create(); aesAlg.Key = Encoding.UTF8.GetBytes(secretKey); aesAlg.IV = Encoding.UTF8.GetBytes(iv); MemoryStream msDecrypt = new MemoryStream(encryptedIdBytes); CryptoStream csDecrypt = new CryptoStream(msDecrypt, aesAlg.CreateDecryptor(), CryptoStreamMode.Read); byte[] idBytes = new byte[4]; csDecrypt.Read(idBytes, 0, idBytes.Length); int id = BitConverter.ToInt32(idBytes, 0); return id; } } Thanks