[MNT-23926] Added Seven Pass algorithm for deletion

amps/ags/rm-community/rm-community-repo/source/java/org/alfresco/module/org_alfresco_module_rm/content/cleanser/ContentCleanserSevenPass.java

@@ -0,0 +1,64 @@
+/*
+ * #%L
+ * Alfresco Records Management Module
+ * %%
+ * Copyright (C) 2005 - 2025 Alfresco Software Limited
+ * %%
+ * This file is part of the Alfresco software.
+ * -
+ * If the software was purchased under a paid Alfresco license, the terms of
+ * the paid license agreement will prevail.  Otherwise, the software is
+ * provided under the following open source license terms:
+ * -
+ * Alfresco is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * -
+ * Alfresco is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ * -
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
+ * #L%
+ */
+
+package org.alfresco.module.org_alfresco_module_rm.content.cleanser;
+
+import java.io.File;
+
+import org.alfresco.service.cmr.repository.ContentIOException;
+
+/**
+ * DoD 5220-22M Seven Pass data cleansing implementation.
+ * 
+ */
+public class ContentCleanserSevenPass extends ContentCleanser
+{
+    /**
+     * @see org.alfresco.module.org_alfresco_module_rm.content.cleanser.ContentCleanser#cleanse(java.io.File)
+     */
+    @Override
+    public void cleanse(File file)
+    {
+        // Double check
+        if (!file.exists() || !file.canWrite())
+        {
+            throw new ContentIOException("Unable to write to file: " + file);
+        }
+        
+        // Overwite file
+        overwrite(file, overwriteOnes);
+        overwrite(file, overwriteZeros);
+        overwrite(file, overwriteRandom);
+        overwrite(file, overwriteZeros);
+        overwrite(file, overwriteZeros);
+        overwrite(file, overwriteOnes);
+        overwrite(file, overwriteRandom);
+        
+        
+        
+    }
+}