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package x509util
import (
"crypto/x509"
"crypto/x509/pkix"
"time"
"github.com/pkg/errors"
)
// DefaultRootCertValidity is the default validity of a root certificate in the step PKI.
var DefaultRootCertValidity = time.Hour * 24 * 365 * 10
// Root implements the Profile for a root certificate.
type Root struct {
base
}
// DefaultDuration returns the default Root Certificate duration.
func (r *Root) DefaultDuration() time.Duration {
return DefaultRootCertValidity
}
// NewRootProfile returns a new root x509 Certificate profile.
func NewRootProfile(name string, withOps ...WithOption) (Profile, error) {
crt := defaultRootTemplate(name)
return NewRootProfileWithTemplate(crt, withOps...)
}
// NewRootProfileWithTemplate returns a new root x509 Certificate profile.
func NewRootProfileWithTemplate(crt *x509.Certificate, withOps ...WithOption) (Profile, error) {
p, err := newProfile(&Root{}, crt, crt, nil, withOps...)
if err != nil {
return nil, errors.WithStack(err)
}
// self-signed certificate
p.SetIssuerPrivateKey(p.SubjectPrivateKey())
return p, nil
}
func defaultRootTemplate(cn string) *x509.Certificate {
notBefore := time.Now()
return &x509.Certificate{
IsCA: true,
NotBefore: notBefore,
NotAfter: notBefore.Add(DefaultRootCertValidity),
KeyUsage: x509.KeyUsageCertSign | x509.KeyUsageCRLSign,
BasicConstraintsValid: true,
MaxPathLen: 1,
MaxPathLenZero: false,
Issuer: pkix.Name{CommonName: cn},
Subject: pkix.Name{CommonName: cn},
}
}
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