Linux Centos8 Create CA Certificate Tutorial

Install Required Files

Yum install openssl-* -y

Create database index files

Enter the certificate serial number as 01

Generate a private key file

Create a CA certificate using a private key

openssl req -new -x509 -key /etc/pki/CA/private/cakey.pem -days 3650 -out /etc/pki/CA/cacert.pem

Issue a certificate to the user (taking the /data/skills directory as an example)

Apply for a private key

Apply for a certificate using the requested private key file

openssl -req -new -key /data/skills/skills.key -out /data/skills/skills.csr

Create a certificate using the csr just now

openssl ca -in /data/skills/skills.csr -out /etc/pki/CA/certs/skills.crt -days

Check the validity of the certificate

openssl ca -status 01 shows the following success

Transfer the parent ca and ca to Windows

Trust

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