目前我正在做一个小项目,用户注册密码字段在数据库中加密,因此我需要使用md5算法验证用户,但我的代码无法正常工作,每当我尝试输入正确的密码(未加密)它进入但后来我发现我键入的任何密码,系统将接受它,即使它在数据库中不匹配。
你能帮帮我吗?这是我的代码: protected void btnSubmit_Click(object sender, EventArgs e)
{
string pAssword = txtPassword.Text;
MD5CryptoServiceProvider encryptor = new MD5CryptoServiceProvider();
byte[] encryptedValue;
UTF8Encoding encoder = new UTF8Encoding();
encryptedValue = encryptor.ComputeHash(encoder.GetBytes(pAssword));
DataSet ds = new DataSet();
ds = (startWebService.getAllUsers());
if (ds.Tables[0].Rows.Count > 0)
{
foreach (DataRow dRow in ds.Tables[0].Rows)
{
string userName = dRow["UserName"].ToString();
string passWord = dRow["Password"].ToString();
string acctNo = dRow["AccountNumber"].ToString();
if (userName == txtUsername.Text.ToString() && acctNo == txtAcctNo.Text.ToString() && passWord == encryptedValue.ToString() )
{
FormsAuthentication.RedirectFromLoginPage(txtUsername.Text.ToString(), false);
lblError.Text = "You got it!";
Response.Redirect("MyAccount.aspx");
}
else
{
this.lblError.ForeColor = System.Drawing.Color.Red;
this.lblError.Text = "Either you have been type an incorrect network credentials or you have reached the maximum login attempts for your account.Please try again or contact the system administrator.";
startWebService.updateFailedLogin(txtAcctNo.Text.ToString(), txtUsername.Text.ToString());
}
}
}
}
我的网络服务:
private DataSet GetDataSet(string strSPROC)
{
SqlConnection conn = new SqlConnection(connectionString);
SqlCommand cmd = conn.CreateCommand();
cmd.CommandText = strSPROC;
conn.Open();
SqlDataAdapter myDataAdapter = new SqlDataAdapter();
myDataAdapter.SelectCommand = cmd;
DataSet dsMT = new DataSet();
myDataAdapter.Fill(dsMT);
return dsMT;
conn.Close();
}
[WebMethod]
public DataSet getAllUsers()
{
return GetDataSet("ELMS_ALLINTERNETUSERS");
}
请帮助我,我必须以一种系统将接受正确等效的加密文本的方式纠正这个问题,例如我输入:spain = wdhs3x9029但我试图输入菲律宾,它也接受。
答案 0 :(得分:3)
有一个很好的内置哈希密码方法(可以使用MD5):
string encryptedValue = FormsAuthentication.HashPasswordForStoringInConfigFile(pAssword, "MD5");
您可以阅读有关此方法的更多信息here。如果你需要重新发明轮子,那么我建议你把哈希作为字符串的方法更改为更像这样的东西:
MD5CryptoServiceProvider encryptor = new MD5CryptoServiceProvider();
UTF8Encoding encoder = new UTF8Encoding();
byte[] encryptedValueBytes = encryptor.ComputeHash(encoder.GetBytes(pAssword));
StringBuilder encryptedValueBuilder = new StringBuilder();
for (int i = 0; i < encryptedValueBytes.Length; i++)
{
encryptedValueBuilder.Append(data[i].ToString("x2"));
}
string encryptedValue = encryptedValueBuilder.ToString();
而不是字节数组上的简单.ToString()。