加密一个结构，坏数据错误，什么'；It’这是原因
本文关键字：It 什么 错误 一个 数据 结构 加密 | 更新日期: 2023-09-27 18:25:20
我不确定我做错了什么，加密似乎有效，但当你解密时，当你试图反序列化它时，会说数据不好，不确定我错了什么。我是加密新手，所以如果真的很简单，我很抱歉。
public byte[] Serialize(object obj, string key)
{
byte[] returnBytes;
using (MemoryStream memory = new MemoryStream())
{
UTF8Encoding UTF8 = new UTF8Encoding();
TripleDESCryptoServiceProvider crypt = new TripleDESCryptoServiceProvider();
MD5CryptoServiceProvider provider = new MD5CryptoServiceProvider();
byte[] pass = provider.ComputeHash(UTF8.GetBytes(key));
crypt.Key = pass;
crypt.Mode = CipherMode.ECB;
crypt.Padding = PaddingMode.PKCS7;
using (CryptoStream stream = new CryptoStream(memory, crypt.CreateEncryptor(), CryptoStreamMode.Write))
{
BinaryFormatter formatter = new BinaryFormatter();
formatter.Serialize(stream, obj);
stream.Close();
memory.Close();
}
returnBytes = memory.ToArray();
}
return returnBytes;
}
public object Deserialize(byte[] inBytes, string key)
{
object returnObj;
using (MemoryStream memory = new MemoryStream())
{
UTF8Encoding UTF8 = new UTF8Encoding();
TripleDESCryptoServiceProvider crypt = new TripleDESCryptoServiceProvider();
MD5CryptoServiceProvider provider = new MD5CryptoServiceProvider();
byte[] pass = provider.ComputeHash(UTF8.GetBytes(key));
crypt.Key = pass;
crypt.Mode = CipherMode.ECB;
crypt.Padding = PaddingMode.PKCS7;
using (CryptoStream stream = new CryptoStream(memory, crypt.CreateDecryptor(), CryptoStreamMode.Read))
{
BinaryFormatter formatter = new BinaryFormatter();
returnObj = formatter.Deserialize(stream);
stream.Close();
memory.Close();
}
return returnObj;
}
}
这段代码我做了一段时间的字符串
public string encrypt(string message, string password)
{
byte[] result;
UTF8Encoding UTF8 = new UTF8Encoding();
MD5CryptoServiceProvider provider = new MD5CryptoServiceProvider();
byte[] key = provider.ComputeHash(UTF8.GetBytes(password));
TripleDESCryptoServiceProvider algorithm = new TripleDESCryptoServiceProvider();
algorithm.Key = key;
algorithm.Mode = CipherMode.ECB;
algorithm.Padding = PaddingMode.PKCS7;
byte[] data = UTF8.GetBytes(message);
try
{
ICryptoTransform encryptor = algorithm.CreateEncryptor();
result = encryptor.TransformFinalBlock(data, 0, data.Length);
}
finally
{
algorithm.Clear();
provider.Clear();
}
return Convert.ToBase64String(result);
}
public string decrypt(string message, string passsword)
{
byte[] result;
UTF8Encoding UTF8 = new UTF8Encoding();
MD5CryptoServiceProvider provider = new MD5CryptoServiceProvider();
byte[] key = provider.ComputeHash(UTF8.GetBytes(passsword));
TripleDESCryptoServiceProvider algorithm = new TripleDESCryptoServiceProvider();
algorithm.Key = key;
algorithm.Mode = CipherMode.ECB;
algorithm.Padding = PaddingMode.PKCS7;
byte[] data = Convert.FromBase64String(message);
try
{
ICryptoTransform decryptor = algorithm.CreateDecryptor();
result = decryptor.TransformFinalBlock(data, 0, data.Length);
}
finally
{
algorithm.Clear();
provider.Clear();
}
return UTF8.GetString(result);
}
您没有设置crypt的IV属性，因此每次都以随机值开始。解密时需要将其设置为与加密时相同的值，就像哈希的盐一样。编辑：考虑到ECB的工作方式，看起来IV可能会被忽略，这就是为什么你以前的代码在没有存储它的情况下工作的原因。
编辑：虽然非欧洲央行当然需要第四部分，但这还不够。我不确定剩下的问题是什么，尽管：
- 不建议使用ECB密码模式-有什么理由使用它吗
- 你很可能会因为填充而遇到问题；我不知道
BinaryFormatter是否会自动为您处理此问题，但值得一探究竟
编辑：Doh-我已经解决了更大的问题；根据Elian的评论，您确实应该使用inBytes。目前，你完全忽略了密文-这没有工作的机会！
下面是一个完整的程序，展示了整个过程：
using System;
using System.IO;
using System.Text;
using System.Security.Cryptography;
using System.Runtime.Serialization.Formatters.Binary;
class Test
{
static void Main()
{
byte[] data = Serialize("Some arbitrary test data", "pass");
object x = Deserialize(data, "pass");
Console.WriteLine(x);
}
private static SymmetricAlgorithm CreateCryptoServiceProvider(string key)
{
byte[] passwordHash;
using (MD5 md5 = MD5.Create())
{
// It's not clear why you're taking the hash of the password...
passwordHash = md5.ComputeHash(Encoding.UTF8.GetBytes(key));
}
var crypt = new TripleDESCryptoServiceProvider();
crypt.Key = passwordHash;
crypt.Mode = CipherMode.CBC; // This is the default anyway - can remove
crypt.Padding = PaddingMode.PKCS7; // Ditto
// Fix this to use a randomly generated one and store it for real code.
crypt.IV = new byte[crypt.BlockSize / 8];
return crypt;
}
public static byte[] Serialize(object obj, string key)
{
var provider = CreateCryptoServiceProvider(key);
using (MemoryStream memory = new MemoryStream())
{
using (CryptoStream stream = new CryptoStream(
memory, provider.CreateEncryptor(), CryptoStreamMode.Write))
{
BinaryFormatter formatter = new BinaryFormatter();
formatter.Serialize(stream, obj);
}
return memory.ToArray();
}
}
public static object Deserialize(byte[] inBytes, string key)
{
var provider = CreateCryptoServiceProvider(key);
using (MemoryStream memory = new MemoryStream(inBytes))
{
using (CryptoStream stream = new CryptoStream(
memory, provider.CreateDecryptor(), CryptoStreamMode.Read))
{
BinaryFormatter formatter = new BinaryFormatter();
return formatter.Deserialize(stream);
}
}
}
}