<?php //pki加密 //使用pki加密需要开启 openssl扩展 //php.ini extension = php_openssl.dll扩展 /*pki模式是 * 公钥加密,私钥解密; * 私钥加密,公钥解密; */ //私钥加密,公钥解密 //客户端 //$data数据 $data = 'abcd'; //获取私钥 $priv_key_id $priv_key_id = openssl_get_privatekey(file_get_contents('99bill-rsa.pem', r)); //获取公钥 $pub_key_id $pub_key_id = openssl_get_publickey(file_get_contents('99bill-rsa.cer', r)); //$data首选通过SHA1哈希加密,然后通过$priv_key_id私钥加密,生成签名$signature //$signature就是加密过的签名 //openssl_sign()加密函数,至于它的解密方法我不知道?????????????????????? openssl_sign($data, $signature, $priv_key_id, OPENSSL_ALGO_SHA1); //还有两种加密函数,而且这两种加密函数有解密方法,知道 //第一种:私钥加密,公钥解密 //$data要加密的数据,$crypted是加密生成的数据,$decrypted是解密生成的数据; $data与$decrypted值相同 //通过$priv_key_id私钥加密,生成$crypted; openssl_private_encrypt($data, $crypted, $priv_key_id); echo $crypted; //通过$pub_key_id公钥解密,生成$decrypted openssl_public_decrypt($crypted, $decrypted , $pub_key_id); //第二种:公钥加密,私钥解密 //$data要加密的数据,$crypted是加密生成的数据,$decrypted是解密生成的数据; $data与$decrypted值相同 //通过$pub_key_id公钥加密,生成$crypted; openssl_public_encrypt($data, $crypted, $pub_key_id); //通过$priv_key_id私钥解密,生成$decrypted openssl_private_decrypt($crypted, $decrypted, $priv_key_id); //注意事项,我这边的获取公钥与私钥的文件是不对应的 //正常情况,获取公钥与私钥文件是一一对应的,这里我使用快钱的。 //快钱给了私钥生成文件,对应的公钥生成文件在快钱那边 //快钱给了公钥生成文件,对应的私钥生成文件在快钱那边 //也就是缺少了一个公钥生成文件和一个私钥生成文件 //我始终没找到一个一一对应的私钥、公钥生成文件,如果你找的了发我一份,谢谢。 // openssl_verify()方法验证签名是否正确(私钥加密生成的数据返回来,用对应的公钥验证),只有这一种情况。 // $signature公钥加密生成的数据,$data原始数据,成功返回1,失败返回0,错误返回-1 // $pub_key_id公钥 openssl_verify($data, $signature, $pub_key_id); //从内存中释放私钥或公钥 openssl_free_key($priv_key_id); openssl_free_key($pub_key_id);
Generate private key and public key
genrsa -out private-rsa.pem
rsa -in private-rsa.pem -pubout -out public-rsa.cer
More php For detailed explanation of pki encryption technology (openssl), please pay attention to the PHP Chinese website for related articles!

To protect the application from session-related XSS attacks, the following measures are required: 1. Set the HttpOnly and Secure flags to protect the session cookies. 2. Export codes for all user inputs. 3. Implement content security policy (CSP) to limit script sources. Through these policies, session-related XSS attacks can be effectively protected and user data can be ensured.

Methods to optimize PHP session performance include: 1. Delay session start, 2. Use database to store sessions, 3. Compress session data, 4. Manage session life cycle, and 5. Implement session sharing. These strategies can significantly improve the efficiency of applications in high concurrency environments.

Thesession.gc_maxlifetimesettinginPHPdeterminesthelifespanofsessiondata,setinseconds.1)It'sconfiguredinphp.iniorviaini_set().2)Abalanceisneededtoavoidperformanceissuesandunexpectedlogouts.3)PHP'sgarbagecollectionisprobabilistic,influencedbygc_probabi

In PHP, you can use the session_name() function to configure the session name. The specific steps are as follows: 1. Use the session_name() function to set the session name, such as session_name("my_session"). 2. After setting the session name, call session_start() to start the session. Configuring session names can avoid session data conflicts between multiple applications and enhance security, but pay attention to the uniqueness, security, length and setting timing of session names.

The session ID should be regenerated regularly at login, before sensitive operations, and every 30 minutes. 1. Regenerate the session ID when logging in to prevent session fixed attacks. 2. Regenerate before sensitive operations to improve safety. 3. Regular regeneration reduces long-term utilization risks, but the user experience needs to be weighed.

Setting session cookie parameters in PHP can be achieved through the session_set_cookie_params() function. 1) Use this function to set parameters, such as expiration time, path, domain name, security flag, etc.; 2) Call session_start() to make the parameters take effect; 3) Dynamically adjust parameters according to needs, such as user login status; 4) Pay attention to setting secure and httponly flags to improve security.

The main purpose of using sessions in PHP is to maintain the status of the user between different pages. 1) The session is started through the session_start() function, creating a unique session ID and storing it in the user cookie. 2) Session data is saved on the server, allowing data to be passed between different requests, such as login status and shopping cart content.

How to share a session between subdomains? Implemented by setting session cookies for common domain names. 1. Set the domain of the session cookie to .example.com on the server side. 2. Choose the appropriate session storage method, such as memory, database or distributed cache. 3. Pass the session ID through cookies, and the server retrieves and updates the session data based on the ID.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

Notepad++7.3.1
Easy-to-use and free code editor

Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.