From 27db664b4da01bc9fd3dcb72cc1f5ca34e7d4136 Mon Sep 17 00:00:00 2001
From: Developer 02 <developer02@didaloghe.onmicrosoft.com>
Date: Wed, 11 Dec 2024 18:22:45 +0100
Subject: [PATCH] =?UTF-8?q?feat(StringExtension):=20Erstellen,=20um=20erfo?=
 =?UTF-8?q?rderliche=20String-Erweiterungsmethoden=20hinzuzuf=C3=BCgen.=20?=
 =?UTF-8?q?=20-=20IsValidTotp=20Erweiterung=20hinzugef=C3=BCgt,=20um=20die?=
 =?UTF-8?q?=20totp=20zu=20=C3=BCberpr=C3=BCfen.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../EnvelopeGenerator.Application.csproj           |  1 -
 .../EnvelopeGenerator.Extensions.csproj            |  1 +
 EnvelopeGenerator.Extensions/StringExtension.cs    | 14 ++++++++++++++
 3 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 EnvelopeGenerator.Extensions/StringExtension.cs

diff --git a/EnvelopeGenerator.Application/EnvelopeGenerator.Application.csproj b/EnvelopeGenerator.Application/EnvelopeGenerator.Application.csproj
index 0e120bcb..6032bb17 100644
--- a/EnvelopeGenerator.Application/EnvelopeGenerator.Application.csproj
+++ b/EnvelopeGenerator.Application/EnvelopeGenerator.Application.csproj
@@ -18,7 +18,6 @@
     <PackageReference Include="DigitalData.Core.DTO" Version="2.0.0" />
     <PackageReference Include="DigitalData.EmailProfilerDispatcher" Version="2.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="7.0.18" />
-    <PackageReference Include="Otp.NET" Version="1.4.0" />
     <PackageReference Include="QRCoder" Version="1.6.0" />
     <PackageReference Include="QRCoder-ImageSharp" Version="0.10.0" />
     <PackageReference Include="UserManager.Application" Version="2.0.0" />
diff --git a/EnvelopeGenerator.Extensions/EnvelopeGenerator.Extensions.csproj b/EnvelopeGenerator.Extensions/EnvelopeGenerator.Extensions.csproj
index 8467bc11..f4ea6b21 100644
--- a/EnvelopeGenerator.Extensions/EnvelopeGenerator.Extensions.csproj
+++ b/EnvelopeGenerator.Extensions/EnvelopeGenerator.Extensions.csproj
@@ -10,6 +10,7 @@
     <PackageReference Include="HtmlSanitizer" Version="8.0.865" />
     <PackageReference Include="Microsoft.Extensions.Localization.Abstractions" Version="7.0.19" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="8.0.0" />
+    <PackageReference Include="Otp.NET" Version="1.4.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/EnvelopeGenerator.Extensions/StringExtension.cs b/EnvelopeGenerator.Extensions/StringExtension.cs
new file mode 100644
index 00000000..0e6e7669
--- /dev/null
+++ b/EnvelopeGenerator.Extensions/StringExtension.cs
@@ -0,0 +1,14 @@
+using OtpNet;
+
+namespace EnvelopeGenerator.Extensions
+{
+    public static class StringExtension
+    {
+        public static bool IsValidTotp(string totp, string secret)
+        {
+            var secret_bytes = Base32Encoding.ToBytes(secret);
+            var secret_totp = new Totp(secret_bytes);
+            return secret_totp.VerifyTotp(totp, out _, VerificationWindow.RfcSpecifiedNetworkDelay);
+        }
+    }
+}
\ No newline at end of file