Risks of Not Using Secure Timestamps
It is highly important to ensure you use secure timestamps for your electronic forms and digital signatures. The reason is – if your timestamps are not secure, you are going to run into a lot of problems.
Firstly, you won’t be able to trust the data in your electronic form. And it will cost you quite a lot in order to back it up another way.
Secondly, if users can sign a document without a timestamp you cannot prove when that document was signed. And if a user has access to an expired key, you cannot prove if the digital signature was made before or after its expiry.
Lastly, as mentioned before, if a timestamp uses a local clock, users will easily be able to manipulate the timestamp.
All of this will result in legal and compliance issues. Which will create further problems, should there be a dispute or the document/signature needs to stand in court.