Advantages of digital signatures over traditional handwritten signatures

Digital signatures have four advantages over traditional handwritten signatures:

1, digital signatures in the signature and the information is separate, need a method to link the signature and the information together; in the traditional handwritten signatures, the signature and the signed information is a whole.

2, in the signature verification method, digital signatures using a public method of signature verification, anyone can test it; traditional handwritten signature verification, by the experienced receiver, by comparing with the reserved signature samples and make a judgment.

3. In digital signatures, a copy of a valid signature is also a valid signature; in traditional handwritten signatures, a copy of a signature is not valid.

4, digital signatures than handwritten signatures have two more roles: to confirm the source of the data and to ensure that the data in the process of sending the data has not been modified or changed. Therefore, in some respects, the function of the data signature, more similar to the function of the overall detection value.