嘿,我对加密和解密很陌生,说实话,甚至对 C# 语言也很陌生。基本上,我有一个 TCP 聊天服务器,可以“保存”日志并加密文本文件。这就是我加密的方式(基于 MSDN 示例):
public static void EncryptFile(string strInputFileName, string strOutputFileName, string strKey)
{
FileStream fsIn = new FileStream(strInputFileName, FileMode.Open, FileAccess.Read);
FileStream fsOut = new FileStream(strOutputFileName, FileMode.Create, FileAccess.Write);
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
des.Key = ASCIIEncoding.ASCII.GetBytes(strKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(strKey);
ICryptoTransform desencrypt = des.CreateEncryptor();
CryptoStream cryptostream = new CryptoStream(fsOut, desencrypt, CryptoStreamMode.Write);
byte[] byteArrayInput = new byte[fsIn.Length - 1];
fsIn.Read(byteArrayInput, 0, byteArrayInput.Length);
cryptostream.Write(byteArrayInput, 0, byteArrayInput.Length);
fsIn.Close();
fsOut.Close();
}
该方法成功对文件进行完全加密。这是我的解密方法:
public static void DecryptFile(string strInputFileName, string strOutputFileName, string strKey)
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
des.Key = ASCIIEncoding.ASCII.GetBytes(strKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(strKey);
byte[] te = new byte[1024];
FileStream fsRead = new FileStream(strInputFileName, FileMode.Open, FileAccess.Read);
ICryptoTransform desdecrypt = des.CreateDecryptor();
CryptoStream cryptostream = new CryptoStream(fsRead, desdecrypt, CryptoStreamMode.Read);
StreamWriter fsDecrypted = new StreamWriter(strOutputFileName);
fsDecrypted.Write(new StreamReader(cryptostream).ReadToEnd());//This is where the "Bad Data" occurs.
fsDecrypted.Flush();
fsDecrypted.Close();
fsRead.Close();
}
当我检查 cryptostream 对象时,它说它抛出了异常,“Stream 不支持查找”。
任何帮助将不胜感激!