Edit Spreadsheet Certificate For Free

What is a digital signature in Excel? A digital signature, also known as a digital ID signature, or an e-signature, is an encrypted stamp of authentication. It confirms that the document and its contents come from the signer and haven't been altered by someone else.

You must save the file in the Microsoft Excel Workbook format to add the digital signature. After you save the workbook, the Select Certificate dialog box is displayed. Select the certificate that you want to use, and then click OK. Click OK to close the Digital Signatures dialog box.

A digital certificate is a file or electronic password that proves the authenticity of a device, server, or user through the use of cryptography and the public key infrastructure (PKI). Digital certificate authentication helps organizations ensure that only trusted devices and users can connect to their networks.

The certificate contains the subject, which is the identity piece, as well as a digital signature. Digital certificates ensure both the identity and secure encryption of a website, individual, organization, device, user or server. They are the foundation to implementing Public Key Infrastructure (PKI) security.

By entering password, you can secure your worksheet from getting copied by others. By default, when you protect a worksheet, all the cells on the worksheet are locked, and users cannot make any changes to a locked cell.

In Visual Basic, on the Tools menu, click Digital Signature. The Digital Signature dialog appears. Select a certificate and click OK. Note: If you haven't selected a digital certificate or want to use another, click Choose.

Protect an Excel file Select File > Info. Select the Protect Workbook box and choose Encrypt with Password. Enter a password in the Password box, and then select OK. Confirm the password in the Reenter Password box, and then select OK.