Alter Signature Certificate For Free

Once a PDF has been digitally signed, it is usually impossible to edit without compromising the signature. And it's precisely the purpose of an electronic signature not to be able to tamper with a signed document! However, in some cases, it is possible to amend the file in a way that keeps the original signature valid.

A common question people have is ?Can my digital signature be forged, misused or copied?? The reality is, wet signatures can easily be forged and tampered with, while electronic signatures have many layers of security and authentication built into them, along with court-admissible proof of transaction.

A digital signature is like the wax seal used by ancient monarchs to officiate a document. Once your signature has been applied to your PDF, it will be restricted so that it cannot be edited.

Change of Digital Signature Certificate (DSC) Login with user ID using existing Digital Signature Certificate. Go to 'Change DSC details' option. Fill the required details of the DSC, which needs to be mapped with your user ID. Select the renewed/Changed DSC.

Digital signatures, like handwritten signatures, are unique to each signer. Digital signature solution providers, such as , follow a specific protocol called Public Key Infrastructure, or PKI. PKI requires the provider to use a mathematical algorithm to generate two long numbers, called keys.

If a digital signature isn't valid, there can be many causes. For example, the sender's certificate may have expired, it may have been revoked by the certificate authority (CA), or the server that verifies the certificate might be unavailable.

Change of Digital Signature Certificate (DSC) Login with user ID using existing Digital Signature Certificate. Go to 'Change DSC details' option. Fill the required details of the DSC, which needs to be mapped with your user ID. Select the renewed/Changed DSC.

Open your document and click the File tab. Click Info and then click Protect Document. From the Protect Document drop-down menu, click Add a Digital Signature. Select a Commitment Type, such as created and approved this document, and then click Sign.

Open the document that contains the signature you want to remove. Click the Microsoft Office Button, point to Prepare, and then click View Signatures. In the Signatures task pane, point to the signature that you want to remove, click the arrow that appears on the right, and then click Remove Signature.

In the Sign window, click in the text box next to the large X and type your name as you would like it to appear on the signature line. Make sure your name is shown next to Signing as:. If not, click the Change button. In the Windows Security window, click on your name and click the OK button.