Added strong password validation

MainProject/Utils/PasswordUtils.cs

@@ -0,0 +1,60 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+using System.Security.Cryptography;
+using System.Text;
+using System.Text.RegularExpressions;
+using BasicDotnetTemplate.MainProject.Enum;
+using BasicDotnetTemplate.MainProject.Models.Settings;
+
+namespace BasicDotnetTemplate.MainProject.Utils;
+public partial class PasswordUtils
+{
+    private const int MIN_LENGTH = 8;
+    private const int MIN_UPPER = 2;
+    private const int MIN_LOWER = 2;
+    private const int MIN_NUMBER = 2;
+    private const int MIN_SPECIAL = 2;
+
+    [GeneratedRegex("[A-Z]")]
+    private static partial Regex RegexUpper();
+
+    [GeneratedRegex("[a-z]")]
+    private static partial Regex RegexLower();
+
+    [GeneratedRegex("[0-9]")]
+    private static partial Regex RegexNumber();
+
+    [GeneratedRegex("[^a-zA-Z0-9]")]
+    private static partial Regex RegexSpecial();
+
+    [GeneratedRegex(@"(\S)\1{2,}", RegexOptions.IgnoreCase | RegexOptions.Compiled)]
+    private static partial Regex RegexIdenticalChars();
+
+    public static List<string> ValidatePassword(string password)
+    {
+        List<string> errors = [];
+
+        if (password.Length < 8)
+            errors.Add(PasswordValidationEnum.MIN_LENGTH);
+
+        if (RegexUpper().Matches(password).Count < MIN_UPPER)
+            errors.Add(PasswordValidationEnum.MIN_UPPER);
+
+        if (RegexLower().Matches(password).Count < MIN_LOWER)
+            errors.Add(PasswordValidationEnum.MIN_LOWER);
+
+        if (RegexNumber().Matches(password).Count < MIN_NUMBER)
+            errors.Add(PasswordValidationEnum.MIN_NUMBER);
+
+        if (RegexSpecial().Matches(password).Count < MIN_SPECIAL)
+            errors.Add(PasswordValidationEnum.MIN_SPECIAL);
+
+        if (RegexIdenticalChars().IsMatch(password))
+            errors.Add(PasswordValidationEnum.IDENTICAL_CHARS);
+
+        return errors;
+    }
+
+
+}
+