改正下面代码错误：using Org.BouncyCastle.Math; using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace WindowsFormsApp1 { public partial class Form7 : Form { public Form7() { InitializeComponent(); } private void btnEncrypt_Click(object sender, EventArgs e) { // 生成公钥和私钥 BigInteger p = BigInteger.Parse("857504083339712752489993810777"); BigInteger q = BigInteger.Parse("1029224947942998075080348647219"); BigInteger n = p * q; BigInteger phi = (p - 1) * (q - 1); BigInteger e = 65537; BigInteger d = ModInverse(e, phi); // 加密数据 BigInteger message = BigInteger.Parse(txtData.Text); BigInteger encrypted = ModPow(message, e, n); // 解密数据 BigInteger decrypted = ModPow(encrypted, d, n); // 显示结果 txtEncrypted.Text = encrypted.ToString(); txtDecrypted.Text = decrypted.ToString(); } // 求模反元素 public static BigInteger ModInverse(BigInteger a, BigInteger m) { BigInteger m0 = m; BigInteger y = 0, x = 1; if (m == 1) return 0; while (a > 1) { BigInteger q = a / m; BigInteger t = m; m = a % m; a = t; t = y; y = x - q * y; x = t; } if (x < 0) x += m0; return x; } // 模幂运算 public static BigInteger ModPow(BigInteger b, BigInteger e, BigInteger m) { BigInteger result = 1; while (e > 0) { if ((e & 1) == 1) result = (result * b) % m; e >>= 1; b = (b * b) % m; } return result; } } }

在代码中，变量名与方法名重复了，需要修改。具体来说，把变量名 `e` 改成 `eValue`，避免与 `ModPow` 方法中的 `e` 混淆；把变量名 `encrypted` 改成 `encryptedMessage`，使其更加具有描述性。修改后的代码如下：

using Org.BouncyCastle.Math;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp1
{
    public partial class Form7 : Form
    {
        public Form7()
        {
            InitializeComponent();
        }

        private void btnEncrypt_Click(object sender, EventArgs e)
        {
            // 生成公钥和私钥
            BigInteger p = BigInteger.Parse("857504083339712752489993810777");
            BigInteger q = BigInteger.Parse("1029224947942998075080348647219");
            BigInteger n = p * q;
            BigInteger phi = (p - 1) * (q - 1);
            BigInteger eValue = 65537;
            BigInteger d = ModInverse(eValue, phi);

            // 加密数据
            BigInteger message = BigInteger.Parse(txtData.Text);
            BigInteger encryptedMessage = ModPow(message, eValue, n);

            // 解密数据
            BigInteger decryptedMessage = ModPow(encryptedMessage, d, n);

            // 显示结果
            txtEncrypted.Text = encryptedMessage.ToString();
            txtDecrypted.Text = decryptedMessage.ToString();
        }

        // 求模反元素
        public static BigInteger ModInverse(BigInteger a, BigInteger m)
        {
            BigInteger m0 = m;
            BigInteger y = 0, x = 1;

            if (m == 1)
                return 0;

            while (a > 1)
            {
                BigInteger q = a / m;
                BigInteger t = m;

                m = a % m;
                a = t;
                t = y;

                y = x - q * y;
                x = t;
            }

            if (x < 0)
                x += m0;

            return x;
        }

        // 模幂运算
        public static BigInteger ModPow(BigInteger b, BigInteger e, BigInteger m)
        {
            BigInteger result = 1;

            while (e > 0)
            {
                if ((e & 1) == 1)
                    result = (result * b) % m;

                e >>= 1;
                b = (b * b) % m;
            }

            return result;
        }
    }
}