C# 在ASP.NET C中使用AES加密时,要解密的数据长度无效#
嗨,伙计们,请帮我解决这个问题,我一直遇到这个错误: 要解密的数据长度无效 我做错了什么C# 在ASP.NET C中使用AES加密时,要解密的数据长度无效#,c#,asp.net,cryptography,C#,Asp.net,Cryptography,嗨,伙计们,请帮我解决这个问题,我一直遇到这个错误: 要解密的数据长度无效 我做错了什么 using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Security.Cryptography; using System.IO; namespace inChargeAES { public class inChargeCrypto : IinCharg
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Security.Cryptography;
using System.IO;
namespace inChargeAES
{
public class inChargeCrypto : IinChargeAES
{
public inChargeCrypto() {}
public String inChargeEncrypt(String plaintext, byte[] encryptionKey, byte[] initializationVector)
{
if (plaintext == null || plaintext.Length <= 0)
{
throw new ArgumentNullException("plaintext");
}
if(encryptionKey == null || encryptionKey.Length <= 0){
throw new ArgumentNullException("encryptionKey");
}
if(initializationVector == null || initializationVector.Length <= 0){
throw new ArgumentNullException("initializationVector");
}
byte[] encryptedText;
using(RijndaelManaged rjManage = new RijndaelManaged())
{
rjManage.Key = encryptionKey;
rjManage.IV = initializationVector;
rjManage.Mode = CipherMode.CBC;
//rjManage.Padding = PaddingMode.None;
ICryptoTransform iTransformer = rjManage.CreateEncryptor(rjManage.Key, rjManage.IV);
using(MemoryStream memStream = new MemoryStream())
{
using(CryptoStream cEncryptStream = new CryptoStream(memStream, iTransformer, CryptoStreamMode.Write))
{
using(StreamWriter encryptStreamWriter = new StreamWriter(cEncryptStream))
{
encryptStreamWriter.Write(plaintext);
}
encryptedText = memStream.ToArray();
}
}
}
return Convert.ToBase64String(encryptedText);
}
public String inChargeDecrypt(byte[] cipher, byte[] encryptionKey, byte[] initializationVector)
{
if (cipher == null || cipher.Length <= 0){
throw new ArgumentNullException("cipher");
}
if (encryptionKey == null || encryptionKey.Length <= 0){
throw new ArgumentNullException("encryptionKey");
}
if (initializationVector == null || initializationVector.Length <= 0){
throw new ArgumentNullException("initializationVector");
}
String decryptedText = null;
using (RijndaelManaged rijManage = new RijndaelManaged())
{
rijManage.Key = encryptionKey;
rijManage.IV = initializationVector;
rijManage.Mode = CipherMode.CBC;
rijManage.Padding = PaddingMode.None;
ICryptoTransform iTranformation = rijManage.CreateDecryptor(rijManage.Key, rijManage.IV);
using(MemoryStream memStream = new MemoryStream(cipher))
{
using(CryptoStream cDecryptorStream = new CryptoStream(memStream, iTranformation, CryptoStreamMode.Read))
{
using (StreamReader decryptReader = new StreamReader(cDecryptorStream))
{
decryptedText = decryptReader.ReadToEnd(); //Exception Is Thrown
}
//memStream.Read(cipher, 0, cipher.Length);
}
}
}
return decryptedText;
}
}
}
使用系统;
使用System.Collections.Generic;
使用System.Linq;
使用System.Web;
使用System.Security.Cryptography;
使用System.IO;
名称空间inChargeAES
{
ChargeCrypto中的公共类:IinChargeAES
{
公共inChargeCrypto(){}
公共字符串inChargeEncrypt(字符串明文,字节[]加密密钥,字节[]初始化向量)
{
如果(plaintext==null | | plaintext.Length您已经注释掉了encrypt函数的填充模式
当我在decrypt函数上注释它时,一切都按预期工作
假设您没有错误地将base64字符串转换回字节[]加密和解密时,填充值必须相同。您的方法对我来说很好,在加密或解密时没有填充。我不理解您所说的“假设您没有错误地将base64字符串转换回字节[]”的意思您的加密方法使用return Convert.ToBase64String(encryptedText);
以字符串形式返回,但您的解密方法需要一个byte[]
数组作为输入。如何将加密字符串转换回byte[]