Electronic signatures on electronic invoices are not concrete and require software verification.

Electronic signature is not a signature as we usually understand it. It is not directly displayed on the face of the ticket, nor is it directly stamped on the lower right corner of the invoice like a special invoice seal. It requires you to use software to open the verification and does not Displayed directly on the ticket.

Everyone knows that after receiving an invoice from an OFD file, you can enter the National VAT Invoice Inspection Platform of the State Administration of Taxation and download the "VAT Electronic Invoice Format File Reader" in the "Related Downloads" section to view the invoice. At this time, the signature can also be verified together.

Anti-counterfeiting principles of electronic invoice signatures

In layman’s terms, the electronic signature on electronic invoices uses electronic signature technology. An electronic signature is not a digital image of a written signature. It's actually an electronic code that allows recipients to easily verify the sender's identity and signature online. It can also verify whether the original text of the file has been changed during transmission.

To put it simply, a legal electronic signature = digital certificate + signature image, and the core technology of electronic signatures is digital certificates. Therefore, the anti-counterfeiting of electronic signatures is equivalent to verifying the legitimacy of digital certificates. sex.

If someone wants to send an important document to someone out of town via the Internet, both the recipient and the sender need to first apply for an electronic license from a licensing authority CA (GlobalSign). This encrypted certificate includes the applicant's online public password, the "public password", for document verification.

The sender encrypts the file using the recipient's public key issued by the CA and signs the file with its own key. When the recipient receives the file, it first uses the sender's public key pair to parse the signature to prove that the file is indeed from the sender. Then use your private key to decrypt the file and read it.

Digital means ensure that the encryption process is an irreversible process, that is, only the private key can be used to decrypt. If others want to crack it, it will take at least thousands of years based on the current level of computer technology. Therefore, in a sense, electronic documents signed with electronic signatures are much safer than written documents signed and sealed.

In other words, electronic invoices use digital authentication technology to record the transaction information of both parties, and have many advantages such as non-tampering, low cost, easy interaction, and easy storage.

If it is found that the downloaded electronic invoice does not have an electronic seal, or the signature of the electronic invoice is a picture and cannot be verified, it can be considered that the invoice received has security risks or is a fake invoice.