Encrypt and Decrypt Excel files

Using Microsoft Excel

To set file encryption settings in Microsoft Excel (here Microsoft Excel 2003):

  1. From the Tools menu, select Options. A dialog will appear.
  2. Select the Security tab.
  3. Input a password and click Advanced
  4. Choose the encryption type and confirm the password.

Encrypting Excel file with Aspose.Cells

The following example shows how to encrypt and password protect an excel file using the Aspose.Cells API.

Decrypting Excel file with Aspose.Cells

It is very to open password-protect excel file and decrypt using the Aspose.Cells API as following codes: