HTTP and HTTPS are the two major Internet protocols currently used by most web pages. HTTP and HTTPS seem to differ only by an "S", but in fact they are quite different:
HTTP
The HTTP Hypertext Transfer Protocol is a simple request-response protocol that usually runs on top of TCP and specifies what messages a client may send to a server and what responses it may get. The headers of the request and response messages are given in ASCII form; the message contents are displayed in a MIME-like format. This simple model was key to the success of the early Web, making development and deployment very straightforward.
HTTPS
HTTPS is an HTTP channel with security as its goal. It ensures the security of the transmission process through transmission encryption and identity authentication based on HTTP. HTTPS adds the SSL security layer to HTTP, which is the basis of the security protocol. HTTPS also has a default port and encryption/authentication layer that are different from HTTP.
Difference between HTTP and HTTPS
The data transmitted by the HTTP protocol is all plain text data, which has low security and a high risk of data leakage. HTTPS is encrypted based on HTTP. Simply put, it is a secure version of HTTP, that is, the SSL security layer is added under HTTP. The basis of HTTPS is SSL, so SSL is required to transmit encrypted content.
The main functions of HTTPS include two aspects: one is data encryption to ensure the security of data transmission, and the other is to confirm the authenticity of the website and play a role in identity authentication.
The main differences between HTTP and HTTPS include the following:
1. Using the HTTPS protocol generally requires a certificate issued by a CA organization. There are few free certificates, and purchasing a certificate requires a certain fee.
2.HTTP is the Hypertext Transfer Protocol, and information is transmitted in plain text, which has low security, while HTTPS uses SSL encrypted transmission and has high security.
3.HTTP and HTTPS use completely different connection methods and the ports they use are also different. HTTP uses port 80 and HTTPS uses port 443.
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