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Is there a way to change the Data Type of PasswordHash from String to Byte array in Asp.Net Core Identity

I am implementing the asp.net core identity library in the minimal API project, and the user table's PasswordHash field performs its default hashing and salt but I want to perform my custom hashing and salting password.
So, how can I change the type of PasswordHash from "string" to "byte[]"
Also, the PasswordHash field should not implement any default hashing mechanism

I did something like this
on registration
private void CreatePasswordHash(string Password, out byte[] PasswordHash, out byte[] PasswordSalt)
{
using (var hmac = new HMACSHA512())
{
PasswordSalt = hmac.Key;
PasswordHash = hmac.ComputeHash(Encoding.UTF8.GetBytes(Password));
}
}
Then,
public async Task<ServiceResponse<AspNetUsers>> AddUser(AddUserDto user)
{
var ServiceResponse = new ServiceResponse<AspNetUsers>();
AspNetUsers Users = _mapper.Map<AspNetUsers>(user);
try
{
if (await UserExist(Users.UserName))
{
ServiceResponse.Success = false;
ServiceResponse.Message = "User Already Exist";
return ServiceResponse;
}
CreatePasswordHash(Users.PasswordHash, out byte[] PasswordMade, out byte[] PasswordSalt);
Users.Id = CommonCode.NewGUID();
Users.SecurityStamp = CommonCode.NewGUID();
Users.ConcurrencyStamp = CommonCode.NewGUID();
Users.PasswordHash = Convert.ToBase64String(PasswordMade);
Users.PasswordSalt = PasswordSalt;
var AddUser = await _context.Users.AddAsync(Users);
await _context.SaveChangesAsync();
ServiceResponse.Data = await _context.Users.SingleAsync(x => x.Id == Users.Id);
ServiceResponse.Success = true;
ServiceResponse.Message = "User successfully added!";
}
catch (Exception ex)
{
ServiceResponse.Success = false;
ServiceResponse.Message = ex.Message;
}
return ServiceResponse;
}
at the time of login, I did something like this.
private bool VerifyPasswordHash(string password, byte[] passwordHash, byte[] passwordSalt)
{
using (var hmac = new HMACSHA512(passwordSalt))
{
var computeHash = hmac.ComputeHash(Encoding.UTF8.GetBytes(password));
for (int i = 0; i < computeHash.Length; i++)
{
if (computeHash[i] != passwordHash[i])
{
return false;
}
}
return true;
}
}
then,
public async Task<ServiceResponse<string>> Login(LoginInformation Credentials)
{
var ServiceResponse = new ServiceResponse<string>();
try
{
var User = await _context.Users.FirstOrDefaultAsync(x => x.Email.ToLower() == Credentials.Email.ToLower());
if(User == null){
ServiceResponse.Success = false;
ServiceResponse.Message = "User not found.";
}
else
if(!VerifyPasswordHash(Credentials.Password, Convert.FromBase64String(User.PasswordHash), User.PasswordSalt))
{
ServiceResponse.Success = false;
ServiceResponse.Message = "Username Or Password Is Incorrect";
}
else{
ServiceResponse.Data = "Login success";
ServiceResponse.Success = true;
ServiceResponse.Message = "Login is Successfull!";
}
}
catch (Exception ex)
{
ServiceResponse.Data = string.Empty;
ServiceResponse.Success = false;
ServiceResponse.Message = ex.Message;
}
return ServiceResponse;
}

Reading from CSV file with CsvHelper

I managed to write contents from a List to a CSV file. Now I'm trying to read from the created CSV file and show the content in a Console Application. I'm getting a exception which lead me to some possible solutions on the internet. None of them are working for my Console Application. I hope you can help me.
My code from Program.cs which calls the method in FileOperations.cs:
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using CsvHelper;
namespace GimpiesConsoleOOcsvListUI
{
class Program
{
static void Main(string[] args)
{
// First line to skip a row and position all users correctly under the right headers
User user0 = new User("", "", "", "");
// Create user default instances
User user1 = new User("Beheer", "beheer#gimpies.nl", "123", "admin");
User user2 = new User("Inkoop", "inkoop#gimpies.nl", "123", "purchase");
User user3 = new User("Verkoop", "verkoop#gimpies.nl", "123", "sales");
// List of default users (with a list you can add, get and remove items in the list)
List<User> users = new List<User>();
users.Add(user0);
users.Add(user1);
users.Add(user2);
users.Add(user3);
// Create login instance
LoginManager loginMgr = new LoginManager();
// Create stock instance
Stock stock = new Stock();
// Create UserList instance
UserList usrlst = new UserList();
// Call method in UserList.cs
usrlst.Users(users);
Start:
// Welcome message
Console.WriteLine("Welcome to the Gimpies Console Application! Choose 1 to login or 2 to register as guest:");
// Get input from user
string input = Console.ReadLine();
bool successfull = false;
while (!successfull)
{
if(input == "1")
{
Console.WriteLine("Enter your username:");
string username = Console.ReadLine();
Console.WriteLine("Enter your password:");
string password = Console.ReadLine();
foreach (User user in users)
{
if (username == user.UserName && password == user.PassWord && user.UserRole == "admin")
{
// Create Admin instance to be able to call methods in that class
Admin am = new Admin();
// Calling the method in Admin.cs to start Menu logic
am.AdminLoggedIn();
successfull = true;
break;
}
if (username == user.UserName && password == user.PassWord && user.UserRole == "purchase")
{
// Create Purchase instance to be able to call methods in that class
Purchase pc = new Purchase();
// Calling the method in Purchase.cs to start Menu logic
pc.PurchaseLoggedIn();
successfull = true;
break;
}
if (username == user.UserName && password == user.PassWord && user.UserRole == "sales")
{
// Create Sales instance to be able to call methods in that class
Sales sl = new Sales();
// Calling the method in Sales.cs to start Menu logic
sl.SalesLoggedIn();
successfull = true;
break;
}
if (username == user.UserName && password == user.PassWord && user.UserRole == "guest")
{
// Create Guest instance to be able to call methods in that class
Guest gt = new Guest();
// Calling the method in Guest.cs to start Menu logic
gt.GuestLoggedIn();
successfull = true;
break;
}
}
if (!successfull)
{
Console.WriteLine("Your username or password is incorrect, try again !!!");
}
}
else if (input == "2")
{
// Create instance to go to method in class RegisterManager.cs
RegisterManager rm = new RegisterManager();
rm.Register(users);
successfull = true;
goto Start;
}
else if (input == "3")
{
FileOperations fo = new FileOperations();
// Calling the method from FileOperations.cs to write the List here to a CSV file
fo.WriteUsersToCSV(users);
goto Start;
}
else if (input == "4")
{
FileOperations fo = new FileOperations();
// Calling the method from FileOperations.cs to write the List here to a CSV file
fo.ReadUsersFromCSV(users);
goto Start;
}
else
{
Console.WriteLine("Try again !!!");
break;
}
}
// // Loop over stored users within instances inside the list where users are added
// foreach (User user in users)
// {
// if(loginMgr.Login(user))
// {
// // Login successfull
// Console.WriteLine("Login user " + user.UserName);
// }
// else
// {
// // Not successfull
// }
// }
}
}
}
In Program.cs it's about the else if with input == "4".
Then the method ReadUsersFromCSV is called inside FileOperations.cs:
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Globalization;
using System.Linq;
using CsvHelper;
namespace GimpiesConsoleOOcsvListUI
{
// Handles CRUD within CSV files and able to save them
public class FileOperations
{
// Writes to CSV file from List
public void WriteUsersToCSV(List<User> users)
{
// using (var mem = new MemoryStream())
// using (var writer = new StreamWriter(mem))
using (var writer = new StreamWriter("users.csv"))
using (var csvWriter = new CsvWriter(writer, CultureInfo.InvariantCulture))
{
csvWriter.Configuration.Delimiter = ";";
csvWriter.Configuration.HasHeaderRecord = true;
csvWriter.Configuration.AutoMap<User>();
csvWriter.WriteHeader<User>();
csvWriter.WriteRecords(users);
writer.Flush();
// var result = Encoding.UTF8.GetString(mem.ToArray());
// Console.WriteLine(result);
Console.WriteLine("Data saved to users.csv");
}
}
// Reads from CSV file and displays content from it (Work in progress...)
public void ReadUsersFromCSV(List<User> users)
{
// using (var mem = new MemoryStream())
// using (var writer = new StreamWriter(mem))
using (var reader = new StreamReader("users.csv"))
using (var csvReader = new CsvReader(reader, CultureInfo.InvariantCulture))
{
// csvReader.Configuration.Delimiter = ";";
// csvReader.Configuration.HasHeaderRecord = true;
// csvReader.Configuration.AutoMap<User>();
// csvReader.ReaderHeader<User>();
// var records = csvReader.GetRecords<dynamic>();
// reader.Flush();
// var result = Encoding.UTF8.GetString(mem.ToArray());
csvReader.Read();
csvReader.ReadHeader();
csvReader.Configuration.HeaderValidated = null;
csvReader.Configuration.MissingFieldFound = null;
var records = csvReader.GetRecords<User>();
foreach (var record in records)
{
Console.WriteLine(records);
}
// Console.WriteLine(records);
}
}
// Writes to CSV file from List
public void SaveGimpiesToCSV(List<Gimpies> gimpies)
{
// using (var mem = new MemoryStream())
// using (var writer = new StreamWriter(mem))
using (var writer = new StreamWriter("gimpies.csv"))
using (var csvWriter = new CsvWriter(writer, CultureInfo.InvariantCulture))
{
csvWriter.Configuration.Delimiter = ";";
csvWriter.Configuration.HasHeaderRecord = true;
csvWriter.Configuration.AutoMap<Gimpies>();
csvWriter.WriteHeader<Gimpies>();
csvWriter.WriteRecords(gimpies);
writer.Flush();
// var result = Encoding.UTF8.GetString(mem.ToArray());
// Console.WriteLine(result);
}
}
}
}
The exception:
Unhandled exception. CsvHelper.MissingFieldException: Field with name 'username' does not exist. You can ignore missing fields by setting MissingFieldFound to null.
at CsvHelper.Configuration.ConfigurationFunctions.MissingFieldFound(String[] headerNames, Int32 index, ReadingContext context)
at CsvHelper.CsvReader.GetFieldIndex(String[] names, Int32 index, Boolean isTryGet, Boolean isOptional)
at CsvHelper.CsvReader.GetFieldIndex(String name, Int32 index, Boolean isTryGet)
at CsvHelper.Expressions.ExpressionManager.CreateConstructorArgumentExpressionsForMapping(ClassMap map, List`1 argumentExpressions)
at CsvHelper.Expressions.ObjectRecordCreator.CreateCreateRecordDelegate(Type recordType)
at CsvHelper.Expressions.RecordCreator.GetCreateRecordDelegate(Type recordType)
at CsvHelper.Expressions.RecordCreator.Create[T]()
at CsvHelper.Expressions.RecordManager.Create[T]()
at CsvHelper.CsvReader.GetRecords[T]()+MoveNext()
at GimpiesConsoleOOcsvListUI.FileOperations.ReadUsersFromCSV(List`1 users) in /home/pascalmariany/Projects/Csharp/GimpiesConsoleOOcsvList/GimpiesConsoleOOcsvListUI/FileOperations.cs:line 55
at GimpiesConsoleOOcsvListUI.Program.Main(String[] args) in /home/pascalmariany/Projects/Csharp/GimpiesConsoleOOcsvList/GimpiesConsoleOOcsvListUI/Program.cs:line 132
The contents of the CSV file:
My User.cs:
namespace GimpiesConsoleOOcsvListUI
{
public class User
{
// Constructor
public User(string username, string email, string password, string userrole)
{
_UserName = username;
_Email = email;
_Password = password;
_UserRole = userrole;
}
private string _UserName;
private string _Email;
private string _Password;
private string _UserRole;
public string UserName
{
get { return _UserName; }
set { _UserName = value; }
}
public string Email
{
get { return _Email; }
set { _Email = value; }
}
public string PassWord
{
get { return _Password; }
set { _Password = value; }
}
public string UserRole
{
get { return _UserRole; }
set { _UserRole = value; }
}
}
}
What would I need to change?
Update:
I read all the feedback and I changed some thing in the method within FileOperations.cs:
// Reads from CSV file and displays content from it (Work in progress...)
public void ReadUsersFromCSV(List<User> users)
{
// using (var mem = new MemoryStream())
// using (var writer = new StreamWriter(mem))
using (var reader = new StreamReader("users.csv"))
using (var csvReader = new CsvReader(reader, CultureInfo.InvariantCulture))
{
try
{
csvReader.Configuration.Delimiter = ";";
csvReader.Configuration.IgnoreBlankLines = true;
csvReader.Configuration.HasHeaderRecord = true;
csvReader.Configuration.PrepareHeaderForMatch = (string header, int index) => header.ToLower();
csvReader.Configuration.MissingFieldFound = null;
// csvReader.Configuration.AutoMap<User>();
// csvReader.ReaderHeader<User>();
// var records = csvReader.GetRecords<dynamic>();
// reader.Flush();
// var result = Encoding.UTF8.GetString(mem.ToArray());
csvReader.Read();
csvReader.ReadHeader();
// csvReader.Configuration.HeaderValidated = null;
// Store all content inside a new List as objetcs
var records = csvReader.GetRecords<User>().ToList();
// users.ForEach(Console.WriteLine);
foreach (var record in records)
{
Console.WriteLine(record);
}
}
catch (CsvHelper.HeaderValidationException exception)
{
Console.WriteLine(exception);
}
}
}
I don't get an exception now, but I get this as output:
GimpiesConsoleOOcsvListUI.User
GimpiesConsoleOOcsvListUI.User
GimpiesConsoleOOcsvListUI.User
GimpiesConsoleOOcsvListUI.User
It's the correct amount of rows, but as you can see it doesn't display the contents which is stored from the CSV file into a List as objects.
Am I missing something?

I managed to solve it. I needed to adjust the foreach loop:
public void ReadUsersFromCSV(List<User> users)
{
// using (var mem = new MemoryStream())
// using (var writer = new StreamWriter(mem))
using (var reader = new StreamReader("users.csv"))
using (var csvReader = new CsvReader(reader, CultureInfo.InvariantCulture))
{
try
{
csvReader.Configuration.Delimiter = ";";
csvReader.Configuration.IgnoreBlankLines = true;
csvReader.Configuration.HasHeaderRecord = true;
csvReader.Configuration.PrepareHeaderForMatch = (string header, int index) => header.ToLower();
csvReader.Configuration.MissingFieldFound = null;
csvReader.Read();
csvReader.ReadHeader();
// Store all content inside a new List as objetcs
var records = csvReader.GetRecords<User>().ToList();
// Loop through the List and show them in Console
foreach (var record in records)
{
Console.WriteLine($"{record.username } {record.email} {record.password} {record.userrole}");
}
}
catch (CsvHelper.HeaderValidationException exception)
{
Console.WriteLine(exception);
}
}
}
Thanks, but the most I learned from this video: Link for Lists

SQLite table doesn't get updated

I have a problem. I created a SwitchButton and want to store the state in a database table. So I created this code to debug:
SettingSwitch.CheckedChange += (s, b) =>
{
SettingDb testsetting = new SettingDb
{
Name = mItems[position].Name,
};
SettingDb test = MainActivity.db.SelectRowFromTableSettings(testsetting);
if (test != null)
{
bool SwitchValueBool = Convert.ToBoolean(test.Value);
}
bool isChecked = ValueDictionary[position];
if(isChecked == true)
{
isChecked = false;
}
else if(isChecked == false)
{
isChecked = true;
}
SettingDb setting = new SettingDb()
{
Name = SettingName.Text,
Type = "Switch",
Value = isChecked.ToString()
};
MainActivity.db.UpdateTableSettings(setting);
ValueDictionary[position] = isChecked;
SettingDb test2 = MainActivity.db.SelectRowFromTableSettings(testsetting);
if (test2 != null)
{
bool SwitchValueBool = Convert.ToBoolean(test2.Value);
}
};
The expected outcome should be:
test.Value = False
test2.Value = Opposite of test.Value, so True
But now the value I get from the table is always False. Here is the update function:
string folder = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal);
public bool UpdateTableSettings(SettingDb setting)
{
try
{
using (var connection = new SQLiteConnection(System.IO.Path.Combine(folder, "Settings.db")))
{
connection.BeginTransaction();
connection.Query<SettingDb>("UPDATE SettingDb SET Value=? WHERE Name=?", setting.Value, setting.Name);
//connection.Update(setting);
connection.Commit();
return true;
}
}
catch (SQLiteException ex)
{
Log.Info("SQLiteEx", ex.Message);
return false;
}
}
public SettingDb SelectRowFromTableSettings(SettingDb setting)
{
try
{
using (var connection = new SQLiteConnection(System.IO.Path.Combine(folder, "Settings.db")))
{
return connection.Query<SettingDb>("SELECT * FROM SettingDb WHERE Name=?", setting.Name).FirstOrDefault();
}
}
catch (SQLiteException ex)
{
Log.Info("SQLiteEx", ex.Message);
return null;
}
}
The table value doesn't get updated!!!
Can someone tell me what I am doing wrong?
Please let me know!

According to your description, you want to update sqlite database table, please take a look the following code and modify the update function.
static void UpdateDatabase(int primaryKey, string newText, int newValue)
{
string path = Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments), "mydatabase.db");
var db = new SQLiteConnection(path, false);
string sql = "UPDATE MyTable SET MyTextColumn = ?, MyValueColumn = ? WHERE MyPrimaryKey= ?";
string[] parms = new String[] { newText, newValue.ToString(), primaryKey.ToString() };
var cmd = db.CreateCommand(sql, parms);
cmd.ExecuteNonQuery();
}

DistinguishedName attribute of Active Directory

This is my code :
public bool ActiveDirectoryAuthenticate(string username, string password)
{
var result = false;
using (var entry = new DirectoryEntry("LDAP://*****/DC=******,DC=biz",username,password,AuthenticationTypes.Secure))
{
var searcher = new DirectorySearcher(entry){Filter = "objectClass=user"};
try
{
var sr = searcher.FindOne();
var PathDic = sr.Properties["distinguishedName"][0].ToString();
result = true;
}
catch (Exception exception)
{
}
}
return result;
}
The problem is
sr.Properties["distinguishedName"][0].ToString();
does not return correct value.
Please help me

Just an idea but don't you need to put value like this :
var PathDic = sr.Properties["distinguishedName"][0].Value.ToString();

My problem resolve:
public bool ActiveDirectoryAuthenticate(string username, string password)
{
var result = false;
using (
var entry = new DirectoryEntry("LDAP://PT/DC=pt,DC=biz", username, password,
AuthenticationTypes.Secure))
{
var searcher = new DirectorySearcher(entry) {Filter = "sAMAccountName=Bank.Members"};
searcher.PropertiesToLoad.Add("distinguishedName");
try
{
var sr = searcher.FindOne();
var name = sr.Properties["distinguishedName"][0].ToString();
result = true;
}
catch (Exception exception)
{
}
}
return result;
}

LDAP SetPassword Access is Denied

the following code was working for 3 months without any problems.
Since today I am getting the following error;
“Exception has been thrown by the target of an invocation”
and the inner exception;
"Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)"
The authentication function works. Here are my functions;
public bool Authenticate(string strUserName, string strPassword)
{
bool authenticated = false;
using (
var entry = new DirectoryEntry("LDAP://myldapserver", strUserName + "#domain", strPassword,
AuthenticationTypes.Secure))
{
try
{
object nativeObject = entry.NativeObject;
authenticated = true;
}
catch (DirectoryServicesCOMException ex)
{
return false;
}
}
return authenticated;
}
And the ChangePassword Method;
public bool ChangePassword(string strUserName, string strOldPassword, string strNewPassword)
{
const long ADS_OPTION_PASSWORD_PORTNUMBER = 6;
const long ADS_OPTION_PASSWORD_METHOD = 7;
const int ADS_PASSWORD_ENCODE_REQUIRE_SSL = 0;
const int ADS_PASSWORD_ENCODE_CLEAR = 1;
string strPort = "636";
int intPort;
intPort = Int32.Parse(strPort);
try
{
string strUserString = "domain" + #"\" + strUserName.Trim();
var entry = new DirectoryEntry("LDAP://myldapserver", strUserString, strOldPassword,
AuthenticationTypes.Secure);
var search = new DirectorySearcher(entry);
string strFilter = "(SAMAccountName=" + strUserName + ")";
search.Filter = strFilter;
SearchResult result = search.FindOne();
DirectoryEntry user = result.GetDirectoryEntry();
user.Invoke("SetOption", new object[] { ADS_OPTION_PASSWORD_PORTNUMBER, intPort });
user.Invoke("SetOption", new object[] { ADS_OPTION_PASSWORD_METHOD, ADS_PASSWORD_ENCODE_CLEAR });
**user.Invoke("SetPassword", new object[] { strNewPassword });**
user.CommitChanges();
user.Close();
}
catch (Exception exception)
{
string msg = exception.InnerException.Message;
return false;
}
return true;
}
It throws the expcetion when I invoke the SetPassword property.
Any help would be greatly appreciated.

Here is the example:-
PrincipalContext pr = new PrincipalContext(ContextType.Domain, "corp.local", "OU=" + OU + ",OU=Users,dc=corp,dc=local", username, password);
UserPrincipal us = new UserPrincipal(pr);
To Change the Password
user.SetPassword("setPassword");
If you want the user should change the password at next Logon, you can use like this.
user.ExpirePasswordNow();
Here is your full code:-
public static Boolean ResetPassword(string username, string password, string DomainId, string setpassword, Boolean UnlockAccount,Boolean NextLogon)
{
PrincipalContext pr = new PrincipalContext(ContextType.Domain, "corp.local", "dc=corp,dc=local", username, password);
UserPrincipal user = UserPrincipal.FindByIdentity(pr, DomainId);
Boolean flag = false;
if (user != null && user.Enabled == true)
{
if (UnlockAccount)
{
user.UnlockAccount();
}
user.SetPassword(setpassword);
if (NextLogon)
{
user.ExpirePasswordNow();
}
user.Save();
flag = true;
}
else
{
flag = false;
}
user.Dispose();
pr.Dispose();
return flag;
}
I found a good article here, if you want to use it in your way, have a look here,
http://www.primaryobjects.com/cms/article66.aspx