CAD visualization digital signature software

When you receive a drawing with a traditional handwritten signature, you can acknowledge that its contents have not been tampered with after the drawing was issued, and that the designer who signed the drawing is also responsible for the drawing. However, if you receive a CAD electronic drawing file now, how to ensure that it has not been tampered with? How to make the designer responsible for its content? This is a difficult problem, but fortunately there is an electronic signature. This smart signature adds visualization and intelligent processing to standard electronic signatures.

Features of CAD visual digital signature software

​​ 1. Paper integrity guaranteed.

It proves that the content of the drawing has not been modified in any way after being digitally signed. Any modification to the drawing will immediately cause the signature to disappear and alarm.

​​ 2. Confirmation of the identity of the planner and non-repudiation.

The first level of digital certificate authentication. The digital certificate used for signature is issued by a third-party authority, and the "Electronic Signature Law" issued by the State Council grants legal electronic signatures legal effect. The State Council authorizes provincial digital certificate certification centers to issue digital certificates, which are equivalent to electronic ID cards.

                                                                                                                                Second-level authentication using MD5 fingerprints of signature handwriting that cannot be imitated.

3. The signature cannot be copied.

The signature handwriting is not an independent image, vector or block. The signature cannot be copied between drawings, and the signature cannot be displayed if it is forcibly copied.

The signature authentication program uses the MD5 fingerprint of the drawing content.

Use the private key in the digital certificate to perform 512-bit SHA asymmetric encryption calculations.

The second level of authentication. The signature handwriting MD5 fingerprint cannot be copied. Even if you trace or output the data and then copy it, you cannot get the same MD5 fingerprint.

​​ 4. Unified handwriting visualization signature effect.

But it is impossible to copy between drawings, and it will automatically disappear after the drawing is modified.

CAD visualization digital signature software update log

          Added support for Haochen CAD2023-2025

            Added support for ZWCAD2023-2025

​​Continue to support AutoCAD2007-2024