关于安全性的

二楼说明
using System;
using System.Security.Cryptography;
using System.Text;
class Program
{
    internal static CngKey aliceKeySignature;
    internal static byte[] alicePubKeyBlob;
    static void Main()
    {
        try
        {
            CreateKeys();
            byte[] aliceData = Encoding.UTF8.GetBytes("Alice");
            byte[] aliceSignature = CreateSignature(aliceData, aliceKeySignature);
            Console.WriteLine("Alice created signature: {0}", Convert.ToBase64String(aliceSignature));
            if (VerifySignature(aliceData, aliceSignature, alicePubKeyBlob))
            {
                Console.WriteLine("Alice signature verified successfully");
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine("1");
        }
    }
    //
    //
    //
    static void CreateKeys()
    {
        try
        {
            Console.WriteLine("22");
            aliceKeySignature = CngKey.Create(CngAlgorithm.ECDsaP256);
            Console.WriteLine("222");
            alicePubKeyBlob = aliceKeySignature.Export(CngKeyBlobFormat.GenericPublicBlob);
        }
        catch (Exception y)
        {
            Console.WriteLine("2");