The receiver receives the result of the digital signature, including the digital signature, the electronic original and the public key of the sender, that is, the data to be verified. The receiver performs signature verification.

The verification process is as follows: firstly, the receiver decrypts the digital signature with the sender's public key, and derives the digital digest; then, the original text of the electronic file is obtained by using the same hash algorithm; after comparing the hash values of the two digests, the signature with the same result is verified; otherwise, the signature is invalid.

This is in line with the requirements of the Electronic Signature Law that the signature cannot be changed, nor can the content and form of the signature be changed.