nebula/e2e/helpers.go

99 lines
2.4 KiB
Go

package e2e
import (
"crypto/rand"
"io"
"net/netip"
"time"
"github.com/slackhq/nebula/cert"
"golang.org/x/crypto/curve25519"
"golang.org/x/crypto/ed25519"
)
// NewTestCaCert will generate a CA cert
func NewTestCaCert(before, after time.Time, networks, unsafeNetworks []netip.Prefix, groups []string) (cert.Certificate, []byte, []byte, []byte) {
pub, priv, err := ed25519.GenerateKey(rand.Reader)
if before.IsZero() {
before = time.Now().Add(time.Second * -60).Round(time.Second)
}
if after.IsZero() {
after = time.Now().Add(time.Second * 60).Round(time.Second)
}
t := &cert.TBSCertificate{
Version: cert.Version1,
Name: "test ca",
NotBefore: time.Unix(before.Unix(), 0),
NotAfter: time.Unix(after.Unix(), 0),
PublicKey: pub,
Networks: networks,
UnsafeNetworks: unsafeNetworks,
Groups: groups,
IsCA: true,
}
c, err := t.Sign(nil, cert.Curve_CURVE25519, priv)
if err != nil {
panic(err)
}
pem, err := c.MarshalPEM()
if err != nil {
panic(err)
}
return c, pub, priv, pem
}
// NewTestCert will generate a signed certificate with the provided details.
// Expiry times are defaulted if you do not pass them in
func NewTestCert(ca cert.Certificate, key []byte, name string, before, after time.Time, networks, unsafeNetworks []netip.Prefix, groups []string) (cert.Certificate, []byte, []byte, []byte) {
if before.IsZero() {
before = time.Now().Add(time.Second * -60).Round(time.Second)
}
if after.IsZero() {
after = time.Now().Add(time.Second * 60).Round(time.Second)
}
pub, rawPriv := x25519Keypair()
nc := &cert.TBSCertificate{
Version: cert.Version1,
Name: name,
Networks: networks,
UnsafeNetworks: unsafeNetworks,
Groups: groups,
NotBefore: time.Unix(before.Unix(), 0),
NotAfter: time.Unix(after.Unix(), 0),
PublicKey: pub,
IsCA: false,
}
c, err := nc.Sign(ca, ca.Curve(), key)
if err != nil {
panic(err)
}
pem, err := c.MarshalPEM()
if err != nil {
panic(err)
}
return c, pub, cert.MarshalPrivateKeyToPEM(cert.Curve_CURVE25519, rawPriv), pem
}
func x25519Keypair() ([]byte, []byte) {
privkey := make([]byte, 32)
if _, err := io.ReadFull(rand.Reader, privkey); err != nil {
panic(err)
}
pubkey, err := curve25519.X25519(privkey, curve25519.Basepoint)
if err != nil {
panic(err)
}
return pubkey, privkey
}