Refactoring and password hashing

Controllers/PasswordVerification.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Security.Cryptography;
+using System.Text;
+
+using TextSender_API.Models;
+
+namespace TextSender_API.Controllers;
+
+public class PasswordVerification
+{
+    #region Fiends
+    private int _keySize = 64;
+    private int _iterations = 350000;
+    #endregion
+
+    #region Constructors
+    #endregion
+
+    #region Methods
+    public Salt CreateSalt(User user)
+    {
+        var salt = new Salt();
+        salt.Key = RandomNumberGenerator.GetBytes(this._keySize);
+
+        return salt;
+    }
+
+    public string HashPassword(User user, Salt salt)
+    {
+        var hashAlgorithm = HashAlgorithmName.SHA512;
+
+        var hash = Rfc2898DeriveBytes.Pbkdf2(
+            Encoding.UTF8.GetBytes(user.Password!),
+            salt.Key!,
+            this._iterations,
+            hashAlgorithm,
+            this._keySize);
+
+        return Convert.ToHexString(hash);
+    }
+    #endregion
+}