encryptedlicenseprovider.cs

这是可以加密&解密字符串

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

namespace GTT
{
    public class EncryptedLicenseProvider : ServerLicenseProvider
    {
        private string key;

        public string Key
        {
            get { return key; }
            set { key = value; }
        }

        protected override Stream GetLicenseDataStream(ServerLicense license)
        {
            Stream inputStream = base.GetLicenseDataStream(license);
            if (inputStream == null) return null;
            inputStream.Position = 0;
            MemoryStream outputStream = new MemoryStream();
            BinaryEncryptor encryptor = new BinaryEncryptor(SymmProvEnum.Rijndael);
            encryptor.Key = key;
            encryptor.ExecuteStream(inputStream, outputStream);
            return outputStream;
        }

        protected override Stream GetLicenseDataStream(string fileName)
        {
            Stream inputStream = base.GetLicenseDataStream(fileName);
            if (inputStream == null) return null;
            inputStream.Position = 0;
            MemoryStream outputStream = new MemoryStream();
            BinaryDecryptor decryptor = new BinaryDecryptor(SymmProvEnum.Rijndael);
            decryptor.Key = key;
            decryptor.ExecuteStream(inputStream, outputStream);
            inputStream.Close();
            return outputStream;
        }
    }
}