Certificate for now

Purpose

Easily generate a certificate for the time being, usable on a TLS-enabled server.

Example

Generating a self signed certificate, then saving it into file.

cert, _ := cert4now.Generate()
cert4now.WritePrivateKeyFile("cert.key", cert, 0600)
cert4now.WriteCertificateFile("cert.crt", cert, 0644)

Generating a root CA, an intermediate CA and a leaf certificate.

rootCA, _ := cert4now.Generate(
	cert4now.CommonName("My Root CA"),
	cert4now.AddDate(20, 0, 0),
	cert4now.KeyUsage(x509.KeyUsageDigitalSignature|x509.KeyUsageCertSign|x509.KeyUsageCRLSign),
	cert4now.ExtKeyUsage(),
	cert4now.IsCA(true),
)

ca, _ := cert4now.Generate(
	cert4now.Authority(rootCA),
	cert4now.CommonName("My CA"),
	cert4now.AddDate(20, 0, 0),
	cert4now.KeyUsage(x509.KeyUsageDigitalSignature|x509.KeyUsageCertSign|x509.KeyUsageCRLSign),
	cert4now.ExtKeyUsage(),
	cert4now.IsCA(true),
)

cert, _ := cert4now.Generate(
	cert4now.Authority(ca),
	cert4now.CommonName("www.example.com"),
	cert4now.IsCA(false),
)