Added login endpoint

Started adding endpoint to login users

Controllers/PasswordVerification.cs

@@ -3,20 +3,39 @@ using System.Security.Cryptography;
 using System.Text;
 
 using TextSender_API.Models;
+using TextSender_API.Repositories;
 
 namespace TextSender_API.Controllers;
 
 public class PasswordVerification
 {
     #region Fiends
+    private UsersRepository? _userRepo;
+    private SaltRepository? _saltRepo;
     private int _keySize = 64;
     private int _iterations = 350000;
     #endregion
 
     #region Constructors
+    public PasswordVerification()
+    {
+    }
+
+    public PasswordVerification(UsersRepository userRepo, SaltRepository saltRepo)
+    {
+        this._userRepo = userRepo;
+        this._saltRepo = saltRepo;
+    }
     #endregion
 
     #region Methods
+    public bool VerifyPassword(User user, string password)
+    {
+        var salt = this._saltRepo.Retrieve(user.Id);
+        var hashedPassword = this.HashPassword(user, salt, password);
+
+        return hashedPassword.Equals(user.Password);
+    }
     public Salt CreateSalt(User user)
     {
         var salt = new Salt();
@@ -25,10 +44,15 @@ public class PasswordVerification
         return salt;
     }
 
-    public string HashPassword(User user, Salt salt)
+    public string HashPassword(User user, Salt salt, string password = "")
     {
         var hashAlgorithm = HashAlgorithmName.SHA512;
 
+        if (!string.IsNullOrEmpty(password))
+        {
+            user.Password = password;
+        }
+
         var hash = Rfc2898DeriveBytes.Pbkdf2(
             Encoding.UTF8.GetBytes(user.Password!),
             salt.Key!,