我最近一直在试验“CryptoStream”,并试图通过加密和解密文本 . Aes班 . '命名空间:System.Security.Cryptography'
在创建使用两个输入参数成功加密文本的功能后:Text,Password
static byte[] Salt = { 18,39,27,48,82,32,12,92 };
public static string EncryptAES(string txt, string Password) {
Rfc2898DeriveBytes rfc = new Rfc2898DeriveBytes(Password, Salt);
RijndaelManaged RJM = new RijndaelManaged();
RJM.Key = rfc.GetBytes(RJM.KeySize / 8);
ICryptoTransform ICT = Aes.Create().CreateEncryptor(RJM.Key, RJM.IV);
using (MemoryStream MS = new MemoryStream()) {
using (CryptoStream CS = new CryptoStream(MS, ICT, CryptoStreamMode.Write)) {
using (StreamWriter SW = new StreamWriter(CS)) {
SW.Write(txt);
}
}
return Convert.ToBase64String(MS.ToArray());
}
}
解密文本的问题发生了 .
我解密文本的尝试如下:
public static string DecryptAES(string EncryptedTxt, string Password) {
Rfc2898DeriveBytes rfc = new Rfc2898DeriveBytes(EncryptedTxt, Salt);
RijndaelManaged RJM = new RijndaelManaged();
RJM.Key = rfc.GetBytes(RJM.KeySize / 8);
ICryptoTransform ICT = Aes.Create().CreateDecryptor(RJM.Key, RJM.IV);
using (MemoryStream MS = new MemoryStream(Convert.FromBase64String(EncryptedTxt))) {
using (CryptoStream CS = new CryptoStream(MS, ICT, CryptoStreamMode.Read)) {
using (StreamReader SR = new StreamReader(CS)) {
return SR.ReadToEnd();
}
}
}
然而;看来我将内存流转换为字符串然后返回的方式是invaild,因为我收到以下错误: Error: Value cannot be null\nParameter name: inputBuffer
错误发生在 using (MemoryStream MS = new MemoryStream(Convert.FromBase64String(EncryptedTxt)))
How can I converter the MemoryStream into string and back?
提前致谢 :-)