Introduction to ssl certificate, ssl certificate generation tool and ssl certificate generation steps
1. What is an ssl certificate?
An SSL certificate is a type of digital certificate, similar to electronic copies of driver's licenses, passports, and business licenses. Because it is configured on the server, it is also called an SSL server certificate.
SSL certificates comply with the SSL protocol and are issued by a trusted digital certificate authority CA after verifying the identity of the server. It has the functions of server identity verification and data transmission encryption.
The SSL certificate establishes an SSL secure channel between the client browser and the Web server (Secure socket layer (SSL) security protocol is designed and developed by Netscape Communication.
The security protocol is mainly used to provide authentication to users and servers; to encrypt and hide transmitted data; to ensure that data is not changed during transmission, that is, data integrity, which has become a global standard in this field.
2. What are the ssl certificate generation tools?
2.1. Tool 1: CFSSL
The CFSSL tool is a PKI/TLS tool open sourced by CloudFlare. Contains a command-line tool and an HTTP API service for signing, verifying and binding TLS certificates, written in Go language.
2.2. Tool 2: OpenSSL
OpenSSL is a secure socket layer cipher library, including main cipher algorithms, common key and certificate encapsulation management functions and SSL protocol, and provides rich applications for testing or other purposes.
2.3. Tool 3: XCA
If you use the XCA tool, after creating the data catalog library, run it and configure your own oid and parameters. After completion, a self-signed certificate can help with testing, but in a formal environment, it is recommended to use a certificate issued by a trusted CA.
3. What is the use of ssl certificate?
(1) Guarantee the security of user privacy information
The SSL certificate allows the website to realize encrypted transmission, which can well prevent the user's private information such as user name, password, transaction record, residence information, etc. from being stolen and tampered with. For example, installing an SSL certificate on an e-commerce website can effectively protect the security of the username and password you submit when you log in to the e-commerce website for payment.
(2) Help users identify phishing websites
The SSL certificate can authenticate the real identity of the server, and can effectively distinguish phishing websites from official websites. After the website deploys a globally trusted SSL certificate, the browser has a built-in security mechanism to check the status of the certificate in real time, and display the website authentication information to the user through the browser, so that the user can easily identify the real identity of the website and prevent counterfeiting of phishing websites.
(3) Conducive to website SEO optimization
Because a website deployed with an SSL certificate is more credible and safer than a website without an SSL certificate, it can effectively protect the interests of users from infringement. Therefore, search engines such as Google and Baidu, from the perspective of ensuring user information security, are vigorously advocating the deployment of SSL certificates on websites to achieve https encrypted access. Websites with SSL certificates are also given preferential treatment in terms of search, display, and ranking.
Four, ssl certificate generation steps
OpenSSL certificate generation steps: Note that this is a self-certified certificate.
4.1 Step 1: Check the installed version of the OpenSSL command using the following command
Order:
openssl version
4.2 Step 2: Create RSA Private Key
Order:
openssl genrsa -des3 -out server.pass.key 2048
Next, you will be asked to enter a password, which can be entered casually, as long as you remember it.
It will generate an RSA key file named private.key. Here, we use 2048-bit key length for security. You can even use smaller key lengths.
4.3 Step 3
Order:
openssl rsa -in server.pass.key -out server.key
Order:
4.4 Step 4
openssl req -new -key server.key -out server.csr -subj "/C=CN/ST=HeNan/L=Zhengzhou/O=hnlxc/OU=hnlxc/CN=hnlxc.com"
4.5 Step 5
Order:
openssl x509 -req -days 365 -in server.csr -signkey server.key -out server.crt
The above are a few steps to generate an ssl certificate.
This article is over!