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package tools
import (
"crypto"
"crypto/ed25519"
"crypto/rand"
"crypto/tls"
"crypto/x509"
"crypto/x509/pkix"
"math/big"
"net"
"time"
)
const ALPN = "quic-go integration tests"
func GenerateCA() (*x509.Certificate, crypto.PrivateKey, error) {
certTempl := &x509.Certificate{
SerialNumber: big.NewInt(2019),
Subject: pkix.Name{},
NotBefore: time.Now(),
NotAfter: time.Now().Add(24 * time.Hour),
IsCA: true,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth, x509.ExtKeyUsageServerAuth},
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
BasicConstraintsValid: true,
}
pub, priv, err := ed25519.GenerateKey(rand.Reader)
if err != nil {
return nil, nil, err
}
caBytes, err := x509.CreateCertificate(rand.Reader, certTempl, certTempl, pub, priv)
if err != nil {
return nil, nil, err
}
ca, err := x509.ParseCertificate(caBytes)
if err != nil {
return nil, nil, err
}
return ca, priv, nil
}
func GenerateLeafCert(ca *x509.Certificate, caPriv crypto.PrivateKey) (*x509.Certificate, crypto.PrivateKey, error) {
certTempl := &x509.Certificate{
SerialNumber: big.NewInt(1),
DNSNames: []string{"localhost"},
IPAddresses: []net.IP{net.IPv4(127, 0, 0, 1)},
NotBefore: time.Now(),
NotAfter: time.Now().Add(24 * time.Hour),
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth, x509.ExtKeyUsageServerAuth},
KeyUsage: x509.KeyUsageDigitalSignature,
}
pub, priv, err := ed25519.GenerateKey(rand.Reader)
if err != nil {
return nil, nil, err
}
certBytes, err := x509.CreateCertificate(rand.Reader, certTempl, ca, pub, caPriv)
if err != nil {
return nil, nil, err
}
cert, err := x509.ParseCertificate(certBytes)
if err != nil {
return nil, nil, err
}
return cert, priv, nil
}
// GenerateTLSConfigWithLongCertChain generates a tls.Config that uses a long certificate chain.
// The Root CA used is the same as for the config returned from getTLSConfig().
func GenerateTLSConfigWithLongCertChain(ca *x509.Certificate, caPrivateKey crypto.PrivateKey) (*tls.Config, error) {
const chainLen = 16
certTempl := &x509.Certificate{
SerialNumber: big.NewInt(2019),
Subject: pkix.Name{},
NotBefore: time.Now(),
NotAfter: time.Now().Add(24 * time.Hour),
IsCA: true,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth, x509.ExtKeyUsageServerAuth},
KeyUsage: x509.KeyUsageDigitalSignature | x509.KeyUsageCertSign,
BasicConstraintsValid: true,
}
lastCA := ca
lastCAPrivKey := caPrivateKey
_, priv, err := ed25519.GenerateKey(rand.Reader)
if err != nil {
return nil, err
}
certs := make([]*x509.Certificate, chainLen)
for i := range chainLen {
caBytes, err := x509.CreateCertificate(rand.Reader, certTempl, lastCA, priv.Public(), lastCAPrivKey)
if err != nil {
return nil, err
}
ca, err := x509.ParseCertificate(caBytes)
if err != nil {
return nil, err
}
certs[i] = ca
lastCA = ca
lastCAPrivKey = priv
}
leafCert, leafPrivateKey, err := GenerateLeafCert(lastCA, lastCAPrivKey)
if err != nil {
return nil, err
}
rawCerts := make([][]byte, chainLen+1)
for i, cert := range certs {
rawCerts[chainLen-i] = cert.Raw
}
rawCerts[0] = leafCert.Raw
return &tls.Config{
Certificates: []tls.Certificate{{
Certificate: rawCerts,
PrivateKey: leafPrivateKey,
}},
NextProtos: []string{ALPN},
}, nil
}
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