Extracting Watermarks from an OBS Bucket File

Prerequisites

• OBS asset access permissions are granted. For details, see Allowing or Disallowing Access to Cloud Assets.
• OBS has been enabled and used.
• The file format is PDF, PPT, Word, or Excel.

Constraints

• This section describes how to extract invisible watermarks from PDF, PPT, Word, or Excel documents.
• The maximum size of a PDF or Word file is 50 MB.
• The maximum size of an Excel file is 70 MB.
• The maximum size of a PPT file is 20 MB.

Creating an OBS Bucket File Watermark Extraction Task

1. Log in to the management console.
2. Click in the upper left corner and select a region or project.
3. In the navigation tree on the left, click . Choose Security & Compliance > Data Security Center .
4. In the navigation tree on the left, choose Data Security Operations > Watermark Tracing. The Database Watermark Extraction tab page is displayed.
5. Click the OBS File Watermark Extraction tab.
6. Click Create Task in the upper left corner. The Create Task page is displayed.
   Figure 1 Creating a watermark extraction task
   

7. Click Add File to select the file from which you want to extract watermarks. You can select multiple OBS bucket files.
   Figure 2 Selecting a file
   

8. Click OK. The watermark extraction task is created.
9. Click next to the target task name to view the extracted invisible watermark content.
   Figure 3 Invisible watermark
   

Related Operations

Click next to the target watermark injection task name to view the status of the watermark extraction task.

• Running: You can view the progress of the watermark extraction task.
• Completed: The watermark content is displayed in the Invisible Watermarks column. If there are no invisible watermarks, -- is displayed.
• Failed: The watermark extraction task fails to be executed. You can move the cursor to to view the failure cause.