加密字符串时没有出错,但是, 当我尝试解密字符串时出现错误,它表示Input.Length无效。有什么想法吗?
public class Crypt
{
public string Encrypt(string Key, string Input)
{
ICryptoTransform crypted = tran(Key).CreateEncryptor();
UTF8Encoding utf8 = new UTF8Encoding();
return utf8.GetString(crypted.TransformFinalBlock(utf8.GetBytes(Input), 0, Input.Length));
}
public string Decrypt(string Key, string Input)
{
ICryptoTransform crypted = tran(Key).CreateDecryptor();
UTF8Encoding utf8 = new UTF8Encoding();
return utf8.GetString(crypted.TransformFinalBlock(utf8.GetBytes(Input), 0, Input.Length));
}
private TripleDESCryptoServiceProvider tran(string Key)
{
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
UTF8Encoding utf8 = new UTF8Encoding();
TripleDESCryptoServiceProvider tDES = new TripleDESCryptoServiceProvider();
tDES.Key = md5.ComputeHash(utf8.GetBytes(Key));
tDES.Mode = CipherMode.ECB;
tDES.Padding = PaddingMode.PKCS7;
return tDES;
}
}
答案 0 :(得分:3)
加密过程返回的字节不是UTF8,但您正在对它们进行处理。如果您想要加密数据的文本表示,您需要做的不仅仅是将任意字节转换为UTF8。
Skeet的回答here应该让你顺利。