Multiple updates

pkg/cert/generate_self_signed.go

@@ -0,0 +1,44 @@
+package cert
+
+import (
+	"crypto/ed25519"
+	"crypto/rand"
+	"crypto/tls"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"encoding/pem"
+	"math/big"
+	"time"
+)
+
+func GenerateSelfSignedForServer() (tls.Certificate, error) {
+	pub, priv, err := ed25519.GenerateKey(rand.Reader)
+	if err != nil {
+		return tls.Certificate{}, err
+	}
+
+	tmpl := x509.Certificate{
+		SerialNumber: big.NewInt(1),
+		Subject: pkix.Name{
+			Organization: []string{"DX.center"},
+		},
+		NotBefore: time.Now(),
+		NotAfter:  time.Now().Add(10 * 365 * 24 * time.Hour),
+
+		KeyUsage:    x509.KeyUsageDigitalSignature,
+		ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
+		DNSNames:    []string{"wingout.dx.center"},
+	}
+
+	certDER, err := x509.CreateCertificate(rand.Reader, &tmpl, &tmpl, pub, priv)
+	if err != nil {
+		return tls.Certificate{}, err
+	}
+
+	keyBytes, err := x509.MarshalPKCS8PrivateKey(priv)
+
+	certPEM := pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: certDER})
+	keyPEM := pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: keyBytes})
+
+	return tls.X509KeyPair(certPEM, keyPEM)
+}