feat: implement core domain models, authentication service, and UI components for the attendance system

Asistencia/Helpers/CryptoHelper.cs

@@ -0,0 +1,44 @@
+using System.Security.Cryptography;
+using System.Text;
+
+namespace Asistencia.Helpers;
+
+public static class CryptoHelper
+{
+    private static readonly byte[] Key = Encoding.UTF8.GetBytes("S4M_Pru3b4_2024!");
+    private static readonly byte[] IV = new byte[16];
+
+    public static string Encriptar(string texto)
+    {
+        using var aes = Aes.Create();
+        aes.Key = Key;
+        aes.IV = IV;
+        aes.Mode = CipherMode.CBC;
+        aes.Padding = PaddingMode.PKCS7;
+
+        using var encryptor = aes.CreateEncryptor();
+        using var ms = new MemoryStream();
+        using (var cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
+        using (var writer = new StreamWriter(cs))
+        {
+            writer.Write(texto);
+        }
+        return Convert.ToBase64String(ms.ToArray());
+    }
+
+    public static string Desencriptar(string textoEncriptado)
+    {
+        using var aes = Aes.Create();
+        aes.Key = Key;
+        aes.IV = IV;
+        aes.Mode = CipherMode.CBC;
+        aes.Padding = PaddingMode.PKCS7;
+
+        var buffer = Convert.FromBase64String(textoEncriptado);
+        using var decryptor = aes.CreateDecryptor();
+        using var ms = new MemoryStream(buffer);
+        using var cs = new CryptoStream(ms, decryptor, CryptoStreamMode.Read);
+        using var reader = new StreamReader(cs);
+        return reader.ReadToEnd();
+    }
+}