Restore SEBPatch

SafeExamBrowser.Configuration.Contracts/Integrity/IIntegrityModule.cs

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+/*
+ * Copyright (c) 2024 ETH Zürich, IT Services
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+namespace SafeExamBrowser.Configuration.Contracts.Integrity
+{
+	/// <summary>
+	/// Provides functionality related to application integrity.
+	/// </summary>
+	public interface IIntegrityModule
+	{
+		/// <summary>
+		/// Caches the specified session for later integrity verification.
+		/// </summary>
+		void CacheSession(string configurationKey, string startUrl);
+
+		/// <summary>
+		/// Removes the specified session from the integrity verification cache.
+		/// </summary>
+		void ClearSession(string configurationKey, string startUrl);
+
+		/// <summary>
+		/// Attempts to calculate the app signature key.
+		/// </summary>
+		bool TryCalculateAppSignatureKey(string connectionToken, string salt, out string appSignatureKey);
+
+		/// <summary>
+		/// Attempts to calculate the browser exam key.
+		/// </summary>
+		bool TryCalculateBrowserExamKey(string configurationKey, string salt, out string browserExamKey);
+
+		/// <summary>
+		/// Attempts to verify the code signature.
+		/// </summary>
+		bool TryVerifyCodeSignature(out bool isValid);
+
+		/// <summary>
+		/// Attempts to verify the integrity for the specified session.
+		/// </summary>
+		bool TryVerifySessionIntegrity(string configurationKey, string startUrl, out bool isValid);
+	}
+}