What does SSL mean?

The full name of SSL is Secure Sockets Layer, which refers to the Secure Sockets Protocol; SSL and its successor Transport Layer Security are a security protocol that provides security and data integrity for network communications; TLS and SSL are used in transmission Encrypt network connections between the application layer and the application layer.

#The operating environment of this article: Windows 7 system, Dell G3 computer.

In order to protect personal information on the Internet, SSL must be introduced. So what does SSL mean? Below, php Chinese website will introduce SSL to you.

1: What does SSL mean?

SSL stands for Security Layer and is used to encrypt the data being sent/received during the communication process. Checking whether it is really SSL can be done through the following two points.

1. The URL address of the website entered in the browser begins with https

2. A key mark appears next to the URL address input field of the browser

2: The difference between SSL and TLS

In addition to SSL, I believe many people know the term TLS. In short, there is not much difference between SSL and TLS (Transport Layer Security) , but the version difference in the communication program has been written.

Three: Functions of SSL

(1) Prevent data eavesdropping

can steal users’ data during online shopping and obtain personal information without authorization Credit card numbers and other important information, if you do not use SSL to encrypt your data, you increase the risk of your credit card information being misused, and in some cases significant monetary loss can occur.

(2) Prevent data tampering and prevent fraud

In the previous example of online shopping, the quantity of the order may be rewritten when the data being entered and exchanged is penetrated, so use SSL Encryption is necessary to transmit data in this state.

Four: SSL Encryption Mechanism

1. This is the case when the sender encrypts the key and the recipient decrypts the same key. Since this key is private, it is suitable for more secure communications, where decryption refers to the mechanism for restoring encryption.

2. The sender's encryption key is the "public key", and the recipient's decryption key is the "key". The situation is different. The "public key" and "secret key" are in pairs and can only be decrypted with that combination. On the other hand, secure communication is ensured since the "secret key" is private and it is owned only by the recipient.

The above is a complete introduction to what SSL means. If you want to know more about operation and maintenance, please pay attention to the php Chinese website.

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