3DES encryption and decryption,

3DES encryption and decryption,

C # 3DES encryption and decryption, available for JAVA and PHP

Using System;
Using System.Security.Cryptography;
Using System.Text;

Namespace TT.Utilities.Encrypt
{
    Public class DES3
    {
        /// <summary>
        /// utf-8 encoding
        /// Encryption mode ECB, padding type PKCS7
        /// </summary>
        /// <param name="str_content"></param>
        /// <param name="str_keys">24-bit key</param>
        /// <returns></returns>
        Public static string DES3_Encrypt(string str_content, string str_keys)
        #region
        {
            Encoding encoding = Encoding.UTF8;

            Byte[] content = encoding.GetBytes(str_content);
            Byte[] keys = encoding.GetBytes(str_keys);

            TripleDESCryptoServiceProvider tdsc = new TripleDESCryptoServiceProvider();

            / / specify the key length, the default is 192
            tdsc.KeySize = 128;
            / / Use the specified key and IV (encryption vector)
            tdsc.Key = keys;
            //tdsc.IV = IV;
            //encryption mode, offset
            tdsc.Mode = CipherMode.ECB;
            tdsc.Padding = PaddingMode.PKCS7;
            / / Perform encryption conversion operation
            ICryptoTransform ct = tdsc.CreateEncryptor();
            //8 is critical, the result of the encryption is an 8-byte array
            Byte[] results = ct.TransformFinalBlock(content, 0, content.Length);

            String base64String = Convert.ToBase64String(results);
            Return base64String;
        }
        #endregion

        /// <summary>
        /// utf-8 encoding
        /// Encryption mode ECB, padding type PKCS7
        /// </summary>
        /// <param name="base64_content"></param>
        /// <param name="str_keys">24-bit key</param>
        /// <returns></returns>
        Public static string DES3_Decrypt(string base64_content, string str_keys)
        #region
        {
            Encoding encoding = Encoding.UTF8;

            Byte[] content = Convert.FromBase64String(base64_content);
            Byte[] keys = encoding.GetBytes(str_keys);

            TripleDESCryptoServiceProvider tdsc = new TripleDESCryptoServiceProvider();

            / / specify the key length, the default is 192
            tdsc.KeySize = 128;
            / / Use the specified key and IV (encryption vector)
            tdsc.Key = keys;
            //tdsc.IV = IV;
            //encryption mode, offset
            tdsc.Mode = CipherMode.ECB;
            tdsc.Padding = PaddingMode.PKCS7;
            / / Perform encryption conversion operation
            ICryptoTransform ct = tdsc.CreateDecryptor();
            //8 is critical, the result of the encryption is an 8-byte array
            Byte[] results = ct.TransformFinalBlock(content, 0, content.Length);

            String oriString = encoding.GetString(results);
            Return oriString;
        }
        #endregion
    }
}