282 lines
11 KiB
C#
282 lines
11 KiB
C#
using System;
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using System.IO;
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using System.Security.Cryptography;
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using System.Text;
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using System.Text.Json;
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using System.Net.Http;
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using System.Threading.Tasks;
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public class Program
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{
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// ==================== 配置区域 ====================
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// 请根据实际情况修改以下配置参数
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// AES加密密钥 (16进制字符串，32位)
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// API接口配置
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private const string InterfaceName = "XXXXXXXX"; // 接口编号
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private const string AccessId = "XXXXXXXXXXX"; // 访问ID
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private const string EncryptionKey = "XXXXXXXXXXXXXXXXXXX"; // 加密密钥
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private const string BaseUrl = "https://api.tianyuanapi.com"; // API基础URL
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// 测试数据配置
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private const string TestMobileNo = "13700000000"; // 测试手机号
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private const string TestIdCard = "XXXXXXXXXXXXX"; // 测试身份证号
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private const string TestName = "XXXXXXXX"; // 测试姓名
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private const string TestAuthDate = "20250318-20270318"; // 测试授权日期
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// HTTP请求配置
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private const int RequestTimeout = 30000; // 请求超时时间(毫秒)
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// ==================== 主程序 ====================
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public static async Task Main()
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{
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Console.WriteLine("===== AES CBC 加密解密演示 =====");
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// 1. 创建一个JSON对象
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var data = new
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{
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mobile_no = TestMobileNo
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};
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// 将JSON对象序列化为字符串
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string jsonString = JsonSerializer.Serialize(data, new JsonSerializerOptions { WriteIndented = true });
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Console.WriteLine("\n原始JSON:");
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Console.WriteLine(jsonString);
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// 2. 加密JSON
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Console.WriteLine("\n开始加密...");
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string encryptedJson = Encrypt(jsonString);
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Console.WriteLine($"加密成功! 加密后Base64:");
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Console.WriteLine(encryptedJson);
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// 3. 解密JSON
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Console.WriteLine("\n开始解密...");
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string decryptedJson = Decrypt(encryptedJson);
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Console.WriteLine($"解密成功! 解密后的原始JSON:");
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Console.WriteLine(decryptedJson);
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// 4. 验证加解密一致性
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Console.WriteLine("\n验证结果:");
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if (jsonString == decryptedJson)
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{
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Console.WriteLine("✅ 加解密前后内容完全一致");
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// 验证原始数据是否可用
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Console.WriteLine("\n尝试解析解密后的JSON:");
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try
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{
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var deserializedObject = JsonSerializer.Deserialize(decryptedJson, typeof(object));
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Console.WriteLine($"✅ JSON解析成功，类型: {deserializedObject.GetType()}");
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}
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catch (Exception ex)
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{
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Console.WriteLine($"❌ JSON解析失败: {ex.Message}");
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}
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}
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else
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{
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Console.WriteLine("❌ 加解密前后内容不一致!");
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Console.WriteLine("原始长度: " + jsonString.Length);
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Console.WriteLine("解密后长度: " + decryptedJson.Length);
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// 找出第一个不同的位置
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for (int i = 0; i < Math.Min(jsonString.Length, decryptedJson.Length); i++)
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{
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if (jsonString[i] != decryptedJson[i])
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{
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Console.WriteLine($"第一个差异在位置 {i}:");
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Console.WriteLine($"原始字符: '{jsonString[i]}' ({(int)jsonString[i]})");
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Console.WriteLine($"解密字符: '{decryptedJson[i]}' ({(int)decryptedJson[i]})");
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break;
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}
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}
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}
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// 5. 演示API调用流程（可选）
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Console.WriteLine("\n===== 演示API调用流程 =====");
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await DemonstrateApiCall();
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}
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// ==================== AES加密解密方法 ====================
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/// <summary>
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/// AES CBC 加密函数
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/// 使用PKCS7填充，随机IV，返回Base64编码的密文
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/// </summary>
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/// <param name="plainText">要加密的明文</param>
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/// <returns>Base64编码的密文</returns>
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public static string Encrypt(string plainText)
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{
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byte[] key = HexToBytes(EncryptionKey);
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using Aes aes = Aes.Create();
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aes.Key = key;
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aes.Mode = CipherMode.CBC;
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aes.Padding = PaddingMode.PKCS7;
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aes.GenerateIV();
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byte[] iv = aes.IV;
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using ICryptoTransform encryptor = aes.CreateEncryptor();
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using MemoryStream ms = new();
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// 先写入IV
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ms.Write(iv, 0, iv.Length);
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using (CryptoStream cs = new(ms, encryptor, CryptoStreamMode.Write))
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using (StreamWriter sw = new(cs))
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{
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sw.Write(plainText);
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}
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return Convert.ToBase64String(ms.ToArray());
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}
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/// <summary>
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/// AES CBC 解密函数
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/// 从Base64密文中提取IV和密文数据，进行解密
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/// </summary>
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/// <param name="cipherText">Base64编码的密文</param>
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/// <returns>解密后的明文</returns>
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public static string Decrypt(string cipherText)
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{
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byte[] key = HexToBytes(EncryptionKey);
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byte[] fullData = Convert.FromBase64String(cipherText);
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// 提取前16字节作为IV
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byte[] iv = new byte[16];
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Buffer.BlockCopy(fullData, 0, iv, 0, iv.Length);
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// 实际密文数据
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byte[] cipherData = new byte[fullData.Length - 16];
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Buffer.BlockCopy(fullData, 16, cipherData, 0, cipherData.Length);
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using Aes aes = Aes.Create();
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aes.Key = key;
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aes.IV = iv;
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aes.Mode = CipherMode.CBC;
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aes.Padding = PaddingMode.PKCS7;
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using ICryptoTransform decryptor = aes.CreateDecryptor();
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using MemoryStream ms = new(cipherData);
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using CryptoStream cs = new(ms, decryptor, CryptoStreamMode.Read);
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using StreamReader sr = new(cs);
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return sr.ReadToEnd();
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}
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/// <summary>
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/// 将16进制字符串转换为字节数组
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/// </summary>
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/// <param name="hex">16进制字符串</param>
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/// <returns>字节数组</returns>
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private static byte[] HexToBytes(string hex)
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{
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byte[] bytes = new byte[hex.Length / 2];
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for (int i = 0; i < hex.Length; i += 2)
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{
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bytes[i / 2] = Convert.ToByte(hex.Substring(i, 2), 16);
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}
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return bytes;
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}
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// ==================== API调用演示方法 ====================
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/// <summary>
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/// 演示完整的API调用流程
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/// 包括：参数构建、加密、发送请求、接收响应、解密响应
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/// </summary>
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private static async Task DemonstrateApiCall()
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{
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try
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{
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// 构建完整的API URL
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string url = $"{BaseUrl}/api/v1/{InterfaceName}";
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// 构建请求参数
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var apiParams = new
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{
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mobile_no = TestMobileNo,
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id_card = TestIdCard,
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auth_date = TestAuthDate,
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name = TestName
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};
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// 将参数转换为JSON字符串并加密
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string jsonStr = JsonSerializer.Serialize(apiParams);
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Console.WriteLine($"请求参数: {jsonStr}");
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string encryptedData = Encrypt(jsonStr);
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Console.WriteLine($"加密后的数据: {encryptedData}");
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// 构建请求体
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var payload = new { data = encryptedData };
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string requestBody = JsonSerializer.Serialize(payload);
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Console.WriteLine($"发送请求到: {url}");
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// 发送HTTP请求
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using (var httpClient = new HttpClient())
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{
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// 设置请求头
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httpClient.DefaultRequestHeaders.Add("Access-Id", AccessId);
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httpClient.DefaultRequestHeaders.Add("Content-Type", "application/json");
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// 设置超时时间
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httpClient.Timeout = TimeSpan.FromMilliseconds(RequestTimeout);
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var content = new StringContent(requestBody, Encoding.UTF8, "application/json");
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var response = await httpClient.PostAsync(url, content);
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Console.WriteLine($"响应状态码: {response.StatusCode}");
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if (response.IsSuccessStatusCode)
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{
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string responseBody = await response.Content.ReadAsStringAsync();
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Console.WriteLine($"API响应: {responseBody}");
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// 解析响应
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try
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{
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var responseData = JsonSerializer.Deserialize<JsonElement>(responseBody);
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if (responseData.TryGetProperty("code", out var codeElement))
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{
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int code = codeElement.GetInt32();
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string message = responseData.TryGetProperty("message", out var msgElement) ? msgElement.GetString() : "";
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string encryptedResponse = responseData.TryGetProperty("data", out var dataElement) ? dataElement.GetString() : "";
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Console.WriteLine($"API响应码: {code}");
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Console.WriteLine($"API消息: {message}");
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if (code == 0 && !string.IsNullOrEmpty(encryptedResponse))
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{
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// 解密响应数据
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try
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{
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string decryptedResponse = Decrypt(encryptedResponse);
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Console.WriteLine($"解密后的响应: {decryptedResponse}");
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}
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catch (Exception ex)
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{
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Console.WriteLine($"解密响应数据失败: {ex.Message}");
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}
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}
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine($"解析响应失败: {ex.Message}");
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}
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}
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else
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{
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Console.WriteLine($"请求失败: {response.StatusCode}");
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}
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine($"API调用异常: {ex.Message}");
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}
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}
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} |