解密之后信息带有乱字符，问题在哪里？

[shyworm]

代码不复杂：

string msg = "Hello World!"; //需要加密的信息
byte[] buf = Encoding.Unicode.GetBytes(msg);

RijndaelManaged rm = new RijndaelManaged();
//=======================================================================
MemoryStream inStream = new MemoryStream(buf);
MemoryStream outStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(outStream,
rm.CreateEncryptor(rm.Key,rm.IV),CryptoStreamMode.Write);

inStream.WriteTo(cStream);//加密
//=======================================================================
byte[] cbuf = outStream.GetBuffer();
string cstr = Encoding.Unicode.GetString(cbuf);
Console.WriteLine(cstr);// 加密之后的数据
//=======================================================================
MemoryStream inCryptoStream = new MemoryStream(cbuf);
MemoryStream outDecStream = new MemoryStream();
CryptoStream DecStream = new CryptoStream(outDecStream,
rm.CreateDecryptor(rm.Key,rm.IV),CryptoStreamMode.Write);

inCryptoStream.WriteTo(DecStream);//解密
//=======================================================================
byte[] decbuf = outDecStream.GetBuffer();
string decstr = Encoding.Unicode.GetString(decbuf,0,buf.Length);
Console.WriteLine(decstr); //解密之后的信息



但是解密之后的信息后面成了乱字符：
Hello Wo?替?鳃

请大侠们多指点，错误究竟在哪里？

[HNU]

不太了解，检查一下 Encoding

[riffleliu]

幫你頂一下！

[shyworm]

Encoding都是用Unicode啊

[sunruping]

幫你頂一下！

[flyingbirddhp]

你换成Encoding.ASCII试试；
还有一个可能，就是你编码是用的Encoding.Unicode.GetBytes()
解码的时候最好用对应的Encoding,Unicode.GetChars(),不要用GetString()
你试试看，毕竟字符数组和字符串还是大不一样的

[hivak47]

解密和加密你的编码要一致。

[shyworm]

一致的啊，你们看前面的半截都是解对了的。
GetChars我再试试。

[zushenf]

string msg = "Hello World!"; //需要加密的信息
byte[] buf = Encoding.Unicode.GetBytes(msg);

RijndaelManaged rm = new RijndaelManaged();
rm.GenerateKey();
rm.GenerateIV();
byte[] key = rm.Key;
byte[] iv = rm.IV;

MemoryStream outStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(outStream,
rm.CreateEncryptor(key,iv),CryptoStreamMode.Write);


cStream.Write(buf,0,buf.Length);
cStream.FlushFinalBlock();
//inStream.WriteTo(cStream);//加密
//=======================================================================

byte[] cbuf = outStream.ToArray();
string cstr = Encoding.Unicode.GetString(cbuf);
textBox1.Text = cstr;
//Console.WriteLine(cstr);// 加密之后的数据
//=======================================================================
MemoryStream inCryptoStream = new MemoryStream(cbuf);
CryptoStream DecStream = new CryptoStream(inCryptoStream,
rm.CreateDecryptor(key,iv),CryptoStreamMode.Read);
byte[] fuck = new byte[cbuf.Length];
//StreamReader reader = new StreamReader(DecStream,Encoding.Unicode );
DecStream.Read(fuck,0,fuck.Length);
cstr = Encoding.Unicode.GetString(fuck);
//=======================================================================

//string decstr = reader.ReadToEnd();
//Console.WriteLine(decstr); //解密之后的信息
textBox2.Text = cstr;

[zushenf]

兄弟直接用我的吧,我已经调试通过

[shyworm]

非常感谢zushenf(一堆大便)！结贴了

[Jinniu]

zushenf(一堆大便)的办法可行！