What is the principle of the anti tamper function of web pages?

The principle of the anti tamper function of the web page is to ensure that the content of the web page will not be tampered or modified at the client side during the transmission process by using encryption technology, digital signatures and other means.

Here is Web page tamper proof Principle explanation of function:

　　 Digital signature: Digital signature is a key technology of web page tamper prevention. During the generation or transmission of web page content, the web server will hash the web page content to generate a summary (also known as a hash value). Then, the digest is encrypted with the private key to form a digital signature. The digital signature is attached to the web page content and transmitted to the client.

　　 Public and private keys: The digital signature uses an asymmetric encryption algorithm, using a pair of keys, namely public key and private key. The public key is used to decrypt the digital signature, while the private key is used to generate the digital signature. The public key can be publicly released for the client to verify the validity of the digital signature, while the private key must be strictly confidential and only the server knows.

　　 Verify digital signature: After the client receives the web page content, it will extract the digital signature and web page content from the web page. Then, the digital signature is decrypted using the public key of the website to get the original digest. Then, the client hashes the received web content to generate a new summary. Finally, compare the two abstracts. If they match, the content of the web page has not been tampered with; If there is no match, it means that the content of the web page has been tampered with.

　　 HTTPS protocol: Web page anti tamper function is usually used in combination with HTTPS protocol. HTTPS encrypts the content of web pages through SSL/TLS protocol to ensure that the data will not be eavesdropped or tampered during transmission. The use of HTTPS can provide additional security and enhance the effectiveness of the anti tampering function of web pages.

　　 Summary:

The anti tamper function of web pages uses digital signature and asymmetric encryption technology to ensure that the content of web pages will not be tampered in the transmission process, and protect the integrity and security of user information. By using HTTPS protocol, we can further strengthen the anti tampering function of web pages and provide more comprehensive data transmission protection.