Is a digital signature the same as a handwritten signature?

The so-called "digital signature" is to generate a series of symbols and codes through some cryptographic operation to form an electronic password for signature, rather than writing a signature or seal. For this kind of electronic signature, technical verification can also be carried out, and its verification accuracy is incomparable to that of general manual signature and seal verification. "Digital signature" is a kind of electronic signature method with the most common application, the most mature technology and the strongest operability in e-commerce and e-government.

It uses standardized procedures and scientific methods to identify signers and approve electronic data content. It can also verify whether the original text of the file has changed during transmission, and ensure the integrity, authenticity and non-repudiation of the transmitted electronic file.

Handwritten signature is a signature in reality. Digital signature is an electronic signature (supported by corresponding security technical measures).

Compared with the traditional handwritten signature, digital signature has many characteristics:

First of all, the signature and information in digital signature are separated, and a method is needed to link the signature and information. In traditional handwritten signature, signature and signature information are a whole.

Secondly, in the method of signature verification, the digital signature uses an open method to verify the signature, and anyone can check it. However, the traditional handwritten signature verification is judged by the experienced receiver by comparing with the reserved signature sample;

Finally, in digital signature, the copy of a valid signature is also a valid signature, while in traditional handwritten signature, the copy of the signature is invalid.