using System;

using System.Security.Cryptography;

using System.Text;

using System.IO;

using System.Web;

using System.Linq;

​

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine(EncryptData("Salutation=MRS|Customer_Name=MISTRY AMEEBEN|Address=B404 5TH FLOOR NIRMAL SHANTI TOWER~SATELLITE~NIRMAL SHANTI TOWER|City=AHMEDABAD|Pin_Code=560066|State=GUJARAT|DOB=1972-08-02|Gender=F|Mobile_Number=6372938695|Nationality=IN|Email_Address=AMEEMISTRY72@GMAIL.COM|Marital_Status=Y|Occupation_Type=N037|PAN_Number=AOIPM1619P|Nominee_Name=|Nominee_DOB=|Relationship_of_Nominee=|Timestamp=8/29/2022 5:01:55 PM|Website_Ref_No=H6Vvj0xDdRr8LZzn|CRM_Lead_Id=487476241|Source_Id=IB|Referral_Code=|utm_source=|utm_medium=|utm_campaign=|Product_Name=Max Life Smart Secure Plus Plan|Partner_Name=MAX LIFE|SP_Code=|LG_SOL_ID=002|Producer_Code=15455043|EBCC_Flag=N|Scheme_Code=CAPMS|CKYC_NO=|Acc_No=915020032162559|Acc_Type=Main|","TL3U2HAQJZ79F8O5X4CNW6S10IEKGPYB"));

    }

     static public string DecryptData(string Encryptinput, string SAMPLE_AES_KEY)

    {

        string decryptionResult= string.Empty;

        try

        {

            //string encryptedHex = "";

            byte[] Keybyte = Encoding.UTF8.GetBytes(SAMPLE_AES_KEY);

            var hexKey = BitConverter.ToString(Keybyte);

            hexKey = hexKey.Replace("-", "");

            string SAMPLE_AES_KEY_HEX = hexKey;

            //byte[] encryptedOutput = encryptDecryptAPI(input, true, SAMPLE_AES_KEY_HEX);

            //encryptionResultBase64 = Convert.ToBase64String(encryptedOutput);

            //var hexString1 = BitConverter.ToString(encryptedOutput);

            //hexString1 = hexString1.Replace("-", "");

            //encryptedHex = hexString1;

           // byte[] data = Convert.FromBase64String(encryptionResultBase64);

            byte[] decryptedOutput = encryptDecryptAPI(Encryptinput, false, SAMPLE_AES_KEY_HEX);

            decryptionResult = Encoding.UTF8.GetString(decryptedOutput, 0, decryptedOutput.Length);

            //var hexString = BitConverter.ToString(decryptedOutput);

            //hexString = hexString.Replace("-", "");

            //encryptedHex = hexString;

            //string result = Convert.ToBase64String(decryptedOutput);

            //// ASCII conversion - string from bytes  

            //string asciiString = Encoding.ASCII.GetString(decryptedOutput, 0, decryptedOutput.Length);

            ////Console.WriteLine(asciiString);

            //string base64Encoded = Convert.ToBase64String(Encoding.UTF8.GetBytes(result));

            //string base64Encodedinput = Convert.ToBase64String(Encoding.UTF8.GetBytes(input));

        }

        catch (Exception ex)

        {

            Console.WriteLine(ex);

            return decryptionResult;

        }

        return decryptionResult;

    }

    public static string GenerateSalt(int length)

    {

        string alphabets = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

        string small_alphabets = "abcdefghijklmnopqrstuvwxyz";

        string numbers = "1234567890";

​

        string characters = numbers + alphabets + small_alphabets + numbers;

​

        //  characters += alphabets + small_alphabets + numbers;

​

        // int length = 10;

        string salt = string.Empty;

        for (int i = 0; i < length; i++)

        {

            string character = string.Empty;

            do

            {

                int index = new Random().Next(0, characters.Length);

                character = characters.ToCharArray()[index].ToString();

            } while (salt.IndexOf(character) != -1);

            salt += character;

        }

        return salt;

    }

    public static byte[] HexStringToByteArray(string s)

    {

        int len = s.Length;

        byte[] data = new byte[len / 2];

        for (int i = 0; i < len; i += 2)

        {

            data[i / 2] = Convert.ToByte(s.Substring(i, 2), 16);

        }

        return data;

    }

    public static byte[] encryptDecryptAPI(string input, bool encrypt, string SAMPLE_AES_KEY_HEX)

    {

​

        byte[] result = null;

        byte[] inputData = null;

        try

        {

​

            if (encrypt)

            {

                string saltinput = GenerateSalt(8) + input + GenerateSalt(8);

                inputData = Encoding.UTF8.GetBytes(saltinput);

                byte[] keyBytes = HexStringToByteArray(SAMPLE_AES_KEY_HEX);

                System.Text.UTF8Encoding UTF8 = new System.Text.UTF8Encoding();

                AesManaged tdes = new AesManaged();

                tdes.Key = keyBytes;

                byte[] AESIV = new byte[0x10];

                tdes.IV = AESIV;

                tdes.Mode = CipherMode.CBC;

                tdes.Padding = PaddingMode.PKCS7;

                ICryptoTransform crypt = tdes.CreateEncryptor();

                byte[] cipher = crypt.TransformFinalBlock(inputData, 0, inputData.Length);

                result = cipher;

            }

            else

            {

                inputData = Convert.FromBase64String(input);

                byte[] keyBytes = HexStringToByteArray(SAMPLE_AES_KEY_HEX);

                System.Text.UTF8Encoding UTF8 = new System.Text.UTF8Encoding();

                AesManaged tdes = new AesManaged();

                tdes.Key = keyBytes;

                byte[] AESIV = new byte[0x10];

                tdes.IV = AESIV;

                tdes.Mode = CipherMode.CBC;

                tdes.Padding = PaddingMode.PKCS7;

                ICryptoTransform decrypt = tdes.CreateDecryptor();

                byte[] cipher = decrypt.TransformFinalBlock(inputData, 0, inputData.Length);

                result = cipher;

            }

        }

        catch (Exception ex)

        {

             Console.WriteLine(ex);

​

        }

        return result;

    }

     static string EncryptData(string input, string SAMPLE_AES_KEY)

    {

        string encryptionResultBase64 = string.Empty;

        try

        {

​

            byte[] Keybyte = Encoding.UTF8.GetBytes(SAMPLE_AES_KEY);

            var hexKey = BitConverter.ToString(Keybyte);

            hexKey = hexKey.Replace("-", "");

            string SAMPLE_AES_KEY_HEX = hexKey;

            byte[] encryptedOutput = encryptDecryptAPI(input, true, SAMPLE_AES_KEY_HEX);

            encryptionResultBase64 = Convert.ToBase64String(encryptedOutput);

            //var hexString1 = BitConverter.ToString(encryptedOutput);

            //hexString1 = hexString1.Replace("-", "");

            //encryptedHex = hexString1;

            byte[] data = Convert.FromBase64String(encryptionResultBase64);

            byte[] decryptedOutput = encryptDecryptAPI(encryptionResultBase64, false, SAMPLE_AES_KEY_HEX);

            string utfString = Encoding.UTF8.GetString(decryptedOutput, 0, decryptedOutput.Length);

            //var hexString = BitConverter.ToString(decryptedOutput);

            //hexString = hexString.Replace("-", "");

            //encryptedHex = hexString;

            //string result = Convert.ToBase64String(decryptedOutput);

            //// ASCII conversion - string from bytes  

            //string asciiString = Encoding.ASCII.GetString(decryptedOutput, 0, decryptedOutput.Length);

            ////Console.WriteLine(asciiString);

            //string base64Encoded = Convert.ToBase64String(Encoding.UTF8.GetBytes(result));

            //string base64Encodedinput = Convert.ToBase64String(Encoding.UTF8.GetBytes(input));

        }

        catch (Exception ex)

        {

             Console.WriteLine(ex);

            return encryptionResultBase64;

        }

        return encryptionResultBase64;

​

​

    }

}