Extracting Invisible Watermarks from Documents (Document Addresses)

Function

This API is used to extract invisible text watermarks from Word (.docx), PPT (.pptx), Excel (.xlsx), and PDF (.pdf) documents. You need to pass the address of a watermarked document (only OBS path is supported) to this API. DSC returns the invisible text watermark extracted from the document in JSON format.

URI

POST /v1/{project_id}/doc-address/watermark/extract

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID.

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token. It can be obtained by calling the IAM API used to obtain a user token. The value of X-Subject-Token in the response header is a token.

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
region_id	Yes	String	ID of the region where the project is located, for example, xx-xx-1.
doc_type	Yes	String	Type of the document whose watermark is to be extracted. Enumeration values: WORD EXCEL PDF PPT
src_file	Yes	String	Address of the document whose text watermark is to be extracted. Currently, only Huawei Cloudcloud service OBS objects are supported. The format is obs://bucket/object, where bucket indicates the name of the OBS bucket in the same region as the current project, and object indicates the full path name of the object. For example, obs://hwbucket/hwinfo/hw.doc.
file_password	No	String	Password for opening a file, which can contain a maximum of 256 characters. If an Office Word document requires a password for read or domain control, you need to enter the password to open the file.

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
watermark	String	Invisible watermark. The length cannot exceed 32 characters.

Status code: 400

**Table 5** Response body parameters
Parameter	Type	Description
error_code	String	Error Code
error_msg	String	Error Message

Example Requests

Extract the invisible watermark from the Word document at obs://hwbucket/hwinfo/hw.docx.

POST /v1/{project_id}/doc-address/watermark/extract

{
  "region_id" : "xx-xx-1",
  "src_file" : "obs://hwbucket/hwinfo/hw.docx",
  "doc_type" : "WORD"
}

Example Responses

Status code: 200

Request succeeded.

{
  "watermark" : "blind_watermark"
}

Status code: 400

Invalid request.

{
  "error_code" : "DSC.00000007",
  "error_msg" : "File format error"
}

Status Codes

Status Code	Description
200	Request succeeded.
400	Invalid request.

Error Codes

See Error Codes.

Parent topic: Document Watermarking

Previous topic: Injecting Watermarks into Documents (Document Addresses)

Next topic: Sensitive Data Discovery

Feedback

Was this page helpful?

Helpful Not helpful

Provide feedback

Thank you very much for your feedback. We will continue working to improve the documentation.See the reply and handling status in My Cloud VOC.

The system is busy. Please try again later.

Which of the following issues have you encountered?

Content is inconsistent with the product UI

Unclear descriptions

Lack of examples or code

Incorrect steps

Can't find what I need

Lack of best practices

Feedback (optional)

0/500

Select at least one type of issue, and enter your comments or suggestions.

Enter a maximum of 500 characters.

Submit Cancel

For any further questions, feel free to contact us through the chatbot.

Chatbot