Add a Digital Signature to an Excel Workbook

This REST API adds a digital signature to an Excel workbook.

REST API

POST https://api.aspose.cloud/v4.0/cells/{name}/digitalsignature

The request parameters include:

Parameter Name	Type	Location	Description
name	string	`<code>path</code>`	The name of the workbook.
digitalsignaturefile	string	`<code>query</code>`	Path to the digital‑signature file (`.pfx` or `.p12`).
password	string	`<code>query</code>`	Password for the workbook, if it is protected.
folder	string	`<code>query</code>`	Folder where the workbook is stored.
storageName	string	`<code>query</code>`	Name of the storage service to use.

Error Handling

HTTP Status	Meaning
200	Signature applied successfully.
400	Bad request – missing or invalid parameters.
401	Unauthorized – invalid or expired OAuth token.
403	Forbidden – insufficient permissions or access denied.
500	Internal server error – unexpected failure.

You can use the cURL command‑line tool to call Aspose.Cells web services. The example below demonstrates a request to the API:

Request

curl -v "https://api.aspose.cloud/v4.0/cells/{name}/digitalsignature?digitalsignaturefile=signature.pfx&password=YourPassword" \
  -X POST \
  -H "Content-Type: application/json" \
  -H "Accept: application/json" \
  -H "Authorization: Bearer <jwt token>"

Response

{
  "Code": 200,
  "Status": "OK"
}

Cloud SDK Family

Using an SDK is the fastest way to integrate digital‑signature functionality. SDKs handle low‑level details so you can focus on your business logic. Check the GitHub repository for a complete list of Aspose.Cells Cloud SDKs.

The following code examples demonstrate how to call Aspose.Cells web services with various SDKs:

Protect an Excel Workbook with Aspose.Cells Cloud API Protect Excel Files