如何在浏览器中显示加密图像而不解密它

Question

  public static class ImageEncryption
    {
        static string FILENAME = @"D:DocumentsWatermarkEBCDocumentEBC021700725665test.pdfPage1.jpg";
        static string ENCFILENAME =  @"D:DocumentsWatermarkEBCDocumentEBC021700725665test.pdfPage1.jpg";
       public static void ImageTripleDESCrypto()
        {
            //Create instance of DES
            TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider();
            //Generate IV and Key
            des.GenerateIV();
            des.GenerateKey();
            //Set Encryption mode
            des.Mode = CipherMode.ECB;
            //Read
            FileStream fileStream = new FileStream(FILENAME, FileMode.Open, FileAccess.Read);
            MemoryStream ms = new MemoryStream();
            fileStream.CopyTo(ms);
            //Store header in byte array (we will used this after encryption)
            var header = ms.ToArray().Take(54).ToArray();
            //Take rest from stream
            var imageArray = ms.ToArray().Skip(54).ToArray();
            //Create encryptor
            var enc = des.CreateEncryptor();
            //Encrypt image
            var encimg = enc.TransformFinalBlock(imageArray, 0, imageArray.Length);
            //Combine header and encrypted image
            var image = Combine(header, encimg);
            //Write encrypted image to disk
            fileStream.Close();
            File.WriteAllBytes(ENCFILENAME, image);

        }
    public static byte[] Combine(byte[] first, byte[] second)
    {
        byte[] ret = new byte[first.Length + second.Length];
        Buffer.BlockCopy(first, 0, ret, 0, first.Length);
        Buffer.BlockCopy(second, 0, ret, first.Length, second.Length);
        return ret;
    }
}

Answer 1

我能映像的唯一方法是，如果客户端和服务器已经对唯一的键进行了预先安排，以便我成为解密它的客户端。否则，对其进行加密是没有意义的，因为它对有能力访问该页面的任何人都将是公开的。这只是意见。