基本信息
源码名称:C# 加密和解密函数(使用AES算法)
源码大小:1.09KB
文件格式:.rar
开发语言:C#
更新时间:2025-06-16
友情提示:(无需注册或充值,赞助后即可获取资源下载链接)
嘿,亲!知识可是无价之宝呢,但咱这精心整理的资料也耗费了不少心血呀。小小地破费一下,绝对物超所值哦!如有下载和支付问题,请联系我们QQ(微信同号):813200300
本次赞助数额为: 2 元×
微信扫码支付:2 元
×
请留下您的邮箱,我们将在2小时内将文件发到您的邮箱
源码介绍
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
public class AesEncryption
{
// 加密函数
public static string Encrypt(string plainText, string key)
{
if (string.IsNullOrEmpty(plainText))
throw new ArgumentNullException(nameof(plainText));
if (string.IsNullOrEmpty(key))
throw new ArgumentNullException(nameof(key));
using (Aes aesAlg = Aes.Create())
{
// 从密钥生成实际的加密密钥和初始化向量(IV)
using (var sha256 = SHA256.Create())
{
byte[] keyBytes = sha256.ComputeHash(Encoding.UTF8.GetBytes(key));
aesAlg.Key = keyBytes;
aesAlg.IV = new byte[16]; // AES块大小为16字节,IV也设为16字节全0
}
// 创建加密器
ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);
// 加密数据
using (MemoryStream msEncrypt = new MemoryStream())
{
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
swEncrypt.Write(plainText);
}
byte[] encryptedBytes = msEncrypt.ToArray();
return Convert.ToBase64String(encryptedBytes);
}
}
}
}
// 解密函数
public static string Decrypt(string cipherText, string key)
{
if (string.IsNullOrEmpty(cipherText))
throw new ArgumentNullException(nameof(cipherText));
if (string.IsNullOrEmpty(key))
throw new ArgumentNullException(nameof(key));
byte[] cipherBytes = Convert.FromBase64String(cipherText);
using (Aes aesAlg = Aes.Create())
{
// 从密钥生成实际的解密密钥和初始化向量(IV)
using (var sha256 = SHA256.Create())
{
byte[] keyBytes = sha256.ComputeHash(Encoding.UTF8.GetBytes(key));
aesAlg.Key = keyBytes;
aesAlg.IV = new byte[16]; // 与加密时相同的IV
}
// 创建解密器
ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);
// 解密数据
using (MemoryStream msDecrypt = new MemoryStream(cipherBytes))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
return srDecrypt.ReadToEnd();
}
}
}
}
}
}
// 使用示例
class Program
{
static void Main()
{
string originalText = "这是一段需要加密的敏感信息";
string key = "MySecretKey123"; // 实际使用时应该使用更复杂、更长的密钥
Console.WriteLine($"原始文本: {originalText}");
// 加密
string encryptedText = AesEncryption.Encrypt(originalText, key);
Console.WriteLine($"加密后的文本: {encryptedText}");
// 解密
string decryptedText = AesEncryption.Decrypt(encryptedText, key);
Console.WriteLine($"解密后的文本: {decryptedText}");
Console.WriteLine($"解密是否成功: {originalText == decryptedText}");
}
}
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
public class AesEncryption
{
// 加密函数
public static string Encrypt(string plainText, string key)
{
if (string.IsNullOrEmpty(plainText))
throw new ArgumentNullException(nameof(plainText));
if (string.IsNullOrEmpty(key))
throw new ArgumentNullException(nameof(key));
using (Aes aesAlg = Aes.Create())
{
// 从密钥生成实际的加密密钥和初始化向量(IV)
using (var sha256 = SHA256.Create())
{
byte[] keyBytes = sha256.ComputeHash(Encoding.UTF8.GetBytes(key));
aesAlg.Key = keyBytes;
aesAlg.IV = new byte[16]; // AES块大小为16字节,IV也设为16字节全0
}
// 创建加密器
ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);
// 加密数据
using (MemoryStream msEncrypt = new MemoryStream())
{
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
{
swEncrypt.Write(plainText);
}
byte[] encryptedBytes = msEncrypt.ToArray();
return Convert.ToBase64String(encryptedBytes);
}
}
}
}
// 解密函数
public static string Decrypt(string cipherText, string key)
{
if (string.IsNullOrEmpty(cipherText))
throw new ArgumentNullException(nameof(cipherText));
if (string.IsNullOrEmpty(key))
throw new ArgumentNullException(nameof(key));
byte[] cipherBytes = Convert.FromBase64String(cipherText);
using (Aes aesAlg = Aes.Create())
{
// 从密钥生成实际的解密密钥和初始化向量(IV)
using (var sha256 = SHA256.Create())
{
byte[] keyBytes = sha256.ComputeHash(Encoding.UTF8.GetBytes(key));
aesAlg.Key = keyBytes;
aesAlg.IV = new byte[16]; // 与加密时相同的IV
}
// 创建解密器
ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);
// 解密数据
using (MemoryStream msDecrypt = new MemoryStream(cipherBytes))
{
using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
return srDecrypt.ReadToEnd();
}
}
}
}
}
}
// 使用示例
class Program
{
static void Main()
{
string originalText = "这是一段需要加密的敏感信息";
string key = "MySecretKey123"; // 实际使用时应该使用更复杂、更长的密钥
Console.WriteLine($"原始文本: {originalText}");
// 加密
string encryptedText = AesEncryption.Encrypt(originalText, key);
Console.WriteLine($"加密后的文本: {encryptedText}");
// 解密
string decryptedText = AesEncryption.Decrypt(encryptedText, key);
Console.WriteLine($"解密后的文本: {decryptedText}");
Console.WriteLine($"解密是否成功: {originalText == decryptedText}");
}
}