PUT http://api.aspose.cloud/v4.0/cells/digitalsignature/spreadsheet
Function Description
This endpoint applies digital signatures to Excel workbooks using provided certificate files. Digital signatures provide cryptographic proof of document authenticity and ensure content integrity by detecting any unauthorized modifications. ## Processing Pipeline 1. Certificate Upload: Accepts .pfx certificate file with password protection2. Workbook Processing: Loads uploaded Excel files3. Signature Application: Applies digital signature using the certificate4. File Output: Returns signed spreadsheet file ## Error Handling - 400 Bad Request: Invalid certificate format or incorrect password- 401 Unauthorized: Authentication failed- 500 Server Error: Digital signature application failed ## Key Features and Benefits - Document Authentication: Cryptographically proves document origin- Integrity Verification: Detects unauthorized modifications- Multiple File Support: Can sign multiple workbooks in single request
The request parameters of spreadsheetDigitalsignature API are:
| Parameter Name | Type | Path/Query String/HTTPBody | Description |
| :- | :- | :- |:- |
|Spreadsheet|File|FormData|Upload spreadsheet file.|
|password|String|Query|The password for the digital certificate (.pfx file).|
|outPath|String|Query|(Optional) The folder path where the workbook is stored. The default is null.|
|outStorageName|String|Query|Output file Storage Name.|
|region|String|Query|Spreadsheet region/language setting (e.g., en-US, fr-FR). Influences number formatting, date parsing, and locale‑specific behavior.|
Response Description
{
File
}
OpenAPI Specification
The OpenAPI Specification defines a publicly accessible programming interface and lets you carry out REST interactions directly from a web browser.