linux cfssl self-signed certificate

linux cfssl self-signed certificate

1. Installation

curl -s -L -o /usr/bin/cfssl https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
curl -s -L -o /usr/bin/cfssl-json https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
curl -s -L -o /usr/bin/cfssl-certinfo https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64
chmod +X /usr/bin/cfssl*

2. Create a json configuration file for the CA certificate signing request (csr)

vi /opt/certs/ca-csr.json

{
	"CN": "test123",
	"hosts": [],
	"key": {
		"algo": "rsa",
		"size": 2048
	},
	"names": [{
		"C": "CN",
		"ST": "beijing",
		"L": "beijing",
		"O": "test",
		"OU": "ok"
	}],
	"ca": {
		"expiry": "175200h"
	}
}

CN: General write domain name
C: Country
ST: Province
L: City
O: Company name
OU: Department name
175200h: 20 years

3. Generate CA certificate and private key

cfssl gencert -initca ca-csr.json | cfssl-json -bare ca