和-协议的本质区别-Https-Http-五分钟速解 (协议有什么区别)
In the vast expanse of the internet, HTTP and HTTPS stand out as two protocols we encounter ona daily basis. These protocols play a crucial role in data transmission and security, and understanding their differences is essential for navigating the intricacies of web communication.
What is HTTP Protocol?
HTTP (Hypertext Transfer Protocol) is a protocol designed to transfer hypertext between computers. It serves as the foundation of the World Wide Web and facilitates the exchange of data between web browsers and web servers.
HTTP, a stateless and connectionless protocol, treats each request-response interaction as independent. The server does not retain any information between requests.
HTTP employs a client-server model, where the client initiates requests and the server delivers the requested services. The client typically takes the form of a user's web browser, while the server hosts and serves web pages.
HTTP Basic Workflow
- The client sends an HTTP request to the server, specifying the requested resource.
- The server processes the request and responds with the requested resource.
- The client receives and displays the received data (e.g., web page).
HTTP Request Methods
HTTP defines various request methods, including:
- GET: Retrieves a specified resource.
- POST: Submits data to be processed or stored.
- PUT: Updates or creates a resource with the provided data.
- DELETE: Deletes a specified resource.
What is HTTPS Protocol?
HTTPS (Hypertext Transfer Protocol Secure) is the secure version of the HTTP protocol. It ensures the confidentiality and integrity of data transmission by incorporating an encryption layer between HTTP and the Transport Layer Security (TLS) protocol.
TLS (formerly SSL) adds a secure layer to the communication channel between HTTP and TCP. It utilizes public-key cryptography to guarantee the secrecy and integrity of communication.
HTTPS Operation
- The client sends an HTTPS request to the server.
- The server responds with a TLS certificate containing its public key.
- The client verifies the certificate and establishes an encrypted TLS session.
- All subsequent HTTP requests and responses are encrypted using the TLS session.
HTTPS Advantages
- Protects data from eavesdropping, tampering, and forgery.
- Ensures data integrity and authenticity.
- Provides higher levels of security for sensitive transactions.
HTTP vs HTTPS: Key Differences
HTTP and HTTPS are distinct protocols with significant differences:
Feature | HTTP | HTTPS |
---|---|---|
Security | Unencrypted, data is vulnerable to eavesdropping | Encrypted using TLS, providing confidentiality and integrity |
Default Port | 80 | 443 |
Protocol Identifier | http:// | https:// |
Data Transfer | Plaintext | Encrypted using TLS |
Certificate | Not required | Required to establish encrypted TLS session |
Connection | Stateless | Stateful, maintains TLS session |
Use Cases | General HTTP requests, image loading | Sensitive data transmission, secure transactions |
When to Use HTTPS
HTTPS is strongly recommended in situations involving the exchangeof sensitive information, such as login credentials, payment details, and personal data. It offers enhanced security and trust, making it crucial for websites handling user data.
Conclusion
HTTP and HTTPS serve distinct roles in the realm of internet communication. HTTP facilitates the transfer of web content, while HTTPS safeguards data transmission through encryption. Understanding the differences between these protocols is paramount for ensuring the security and privacy of online interactions.
域名的协议头"http"和"https"有什么不同?
http协议和https协议的区别:传输信息安全性不同、连接方式不同、端口不同、证书申请方式不同
一、传输信息安全性不同
1、http协议:是超文本传输协议,信息是明文传输。如果攻击者截取了Web浏览器和网站服务器之间的传输报文,就可以直接读懂其中的信息。
2、https协议:是具有安全性的ssl加密传输协议,为浏览器和服务器之间的通信加密,确保数据传输的安全。
二、连接方式不同
1、http协议:http的连接很简单,是无状态的。
2、https协议:是由SSL+HTTP协议构建的可进行加密传输、身份认证的网络协议。
三、端口不同
1、http协议:使用的端口是80。
2、https协议:使用的端口是443.
四、证书申请方式不同
1、http协议:免费申请。
2、https协议:需要到ca申请证书,一般免费证书很少,需要交费。
http协议和https协议的区别
http协议和https协议的区别:
一、传输信息安全性不同
1、http协议:是超文本传输协议,信息是明文传输。如果攻击者截取了Web浏览器和网站服务器之间的传输报文,就可以直接读懂其中的信息。
2、https协议:是具有安全性的ssl加密传输协议,为浏览器和服务器之间的通信加密,确保数据传输的安全。
二、连接方式不同
1、http协议:http的连接很简单,是无状态的。
2、https协议:是由SSL+HTTP协议构建的可进行加密传输、身份认证的网络协议。
三、端口不同
1、http协议:使用的端口是80。
2、https协议:使用的端口是443.
四、证书申请方式不同
1、http协议:免费申请。
2、https协议:需要到ca申请证书,一般免费证书很少,需要交费。
扩展资料
http协议特点:
1、支持客户/服务器模式。(C/S模式)
2、简单快速:客户向服务器请求服务时,只需传送请求方法和路径。请求方法常用的有GET、HEAD、POST。每种方法规定了客户与服务器联系的类型不同。由于HTTP协议简单,使得HTTP服务器的程序规模小,因而通信速度很快。
3、灵活:HTTP允许传输任意类型的数据对象。正在传输的类型由Content-Type加以标记。
4、无连接:无连接的含义是限制每次连接只处理一个请求。服务器处理完客户的请求,并收到客户的应答后,即断开连接。采用这种方式可以节省传输时间。
5、无状态:HTTP协议是无状态协议。无状态是指协议对于事务处理没有记忆能力。缺少状态意味着如果后续处理需要前面的信息,则它必须重传,这样可能导致每次连接传送的数据量增大。另一方面,在服务器不需要先前信息时它的应答就较快。
HTTPS特点:
1、优点
相比于http,https可以提供更加优质保密的信息,保证了用户数据的安全性,此外https同时也一定程度上保护了服务端,使用恶意攻击和伪装数据的成本大大提高。
2、缺点
缺点也同样很明显,第一,https的技术门槛较高。多数个人或者私人网站难以支撑,CA机构颁发的证书都是需要年费的。此外,对接Https协议也需要额外的技术支持。
其二,目前来说大多数网站并不关心数据的安全性和保密性,https最大的优点对它来说并不适用。
其三,https加重了服务端的负担。相比于http,其需要更多的资源来支撑,同时也降低了用户的访问速度。
第四,目前来说,Http网站仍然大规模使用,在浏览器中也没有特别大的差别。
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