// ocspSignerMain is the main CLI of OCSP signer functionality.
func ocspSignerMain(args []string, c cli.Config) (err error) {
// Read the cert to be revoked from file
certBytes, err := ioutil.ReadFile(c.CertFile)
if err != nil {
log.Critical("Unable to read certificate: ", err)
return
}
cert, err := helpers.ParseCertificatePEM(certBytes)
if err != nil {
log.Critical("Unable to parse certificate: ", err)
return
}
req := ocsp.SignRequest{
Certificate: cert,
Status: c.Status,
}
if c.Status == "revoked" {
req.Reason = c.Reason
req.RevokedAt = time.Now()
if c.RevokedAt != "now" {
req.RevokedAt, err = time.Parse("2006-01-02", c.RevokedAt)
if err != nil {
log.Critical("Malformed revocation time: ", c.RevokedAt)
return
}
}
}
s, err := ocsp.NewSignerFromFile(c.CAFile, c.ResponderFile, c.KeyFile, time.Duration(c.Interval))
if err != nil {
log.Critical("Unable to create OCSP signer: ", err)
return
}
resp, err := s.Sign(req)
if err != nil {
log.Critical("Unable to sign OCSP response: ", err)
return
}
cli.PrintOCSPResponse(resp)
return
}
func main() {
// Validate input
// All flags are required
flag.Parse()
missing := false
flag.VisitAll(func(f *flag.Flag) {
if len(f.Value.String()) == 0 {
missing = true
}
})
if missing {
log.Critical("All flags must be provided.")
flag.Usage()
return
}
jsonConfig, err := ioutil.ReadFile(*configFile)
if err != nil {
log.Criticalf("Unable to read config: %v", err)
return
}
var config Config
err = json.Unmarshal(jsonConfig, &config)
if err != nil {
log.Criticalf("Unable to parse config: %v", err)
return
}
if len(config.Name.C) == 0 || len(config.Name.O) == 0 ||
len(config.Name.CN) == 0 {
log.Criticalf("Config must provide country, organizationName, and commonName")
return
}
if config.NotBefore.After(config.NotAfter) {
log.Criticalf("Invalid validity: notAfter is before notBefore")
return
}
// Set up PKCS#11 key
priv, err := pkcs11key.New(*module, *token, *pin, *label)
if err != nil {
log.Criticalf("Unable to instantiate PKCS#11 private key: %v", err)
return
}
pub := priv.Public()
// Generate serial number
serialLimit := new(big.Int).Lsh(big.NewInt(1), 128)
serialNumber, err := rand.Int(rand.Reader, serialLimit)
if err != nil {
log.Criticalf("Error generating serial number: %v", err)
return
}
// Generate subject key ID
pubDER, err := x509.MarshalPKIXPublicKey(pub)
if err != nil {
log.Criticalf("Error serializing public key: %v", err)
return
}
h := sha1.New()
h.Write(pubDER)
keyID := h.Sum(nil)
// Sign the certificate
rootTemplate := &x509.Certificate{
SignatureAlgorithm: x509.SHA256WithRSA,
SerialNumber: serialNumber,
Subject: pkix.Name{
Country: []string{config.Name.C},
Organization: []string{config.Name.O},
CommonName: config.Name.CN,
},
NotBefore: config.NotBefore,
NotAfter: config.NotAfter,
BasicConstraintsValid: true,
IsCA: true,
SubjectKeyId: keyID,
}
rootDER, err := x509.CreateCertificate(rand.Reader, rootTemplate, rootTemplate, pub, priv)
if err != nil {
log.Criticalf("Error signing certificate: %v", err)
return
}
fmt.Println(string(pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: rootDER,
})))
}
// Handle receives the incoming request, validates it, and processes it.
func (h *AuthHandler) Handle(w http.ResponseWriter, r *http.Request) error {
log.Info("signature request received")
body, err := ioutil.ReadAll(r.Body)
if err != nil {
log.Errorf("failed to read response body: %v", err)
return err
}
r.Body.Close()
var aReq auth.AuthenticatedRequest
err = json.Unmarshal(body, &aReq)
if err != nil {
log.Errorf("failed to unmarshal authenticated request: %v", err)
return errors.NewBadRequest(err)
}
var req jsonSignRequest
err = json.Unmarshal(aReq.Request, &req)
if err != nil {
log.Errorf("failed to unmarshal request from authenticated request: %v", err)
return errors.NewBadRequestString("Unable to parse authenticated sign request")
}
// Sanity checks to ensure that we have a valid policy. This
// should have been checked in NewAuthHandler.
policy := h.signer.Policy()
if policy == nil {
log.Critical("signer was initialised without a signing policy")
return errors.NewBadRequestString("invalid policy")
}
profile := policy.Default
if policy.Profiles != nil && req.Profile != "" {
profile = policy.Profiles[req.Profile]
}
if profile == nil {
log.Critical("signer was initialised without any valid profiles")
return errors.NewBadRequestString("invalid profile")
}
if profile.Provider == nil {
log.Error("profile has no authentication provider")
return errors.NewBadRequestString("no authentication provider")
}
if !profile.Provider.Verify(&aReq) {
log.Warning("received authenticated request with invalid token")
return errors.NewBadRequestString("invalid token")
}
signReq := jsonReqToTrue(req)
if signReq.Hosts == nil {
return errors.NewBadRequestString("missing parameter 'hostname' or 'hosts'")
}
if signReq.Request == "" {
return errors.NewBadRequestString("missing parameter 'certificate_request'")
}
cert, err := h.signer.Sign(signReq)
if err != nil {
log.Errorf("signature failed: %v", err)
return err
}
result := map[string]string{"certificate": string(cert)}
log.Info("wrote response")
return api.SendResponse(w, result)
}
func main() {
// Validate input
// All flags are required
flag.Parse()
missing := false
flag.VisitAll(func(f *flag.Flag) {
if len(f.Value.String()) == 0 {
missing = true
}
})
if missing {
log.Critical("All flags must be provided.")
flag.Usage()
return
}
// Read the issuer cert
certPEM, err := ioutil.ReadFile(*certFile)
if err != nil {
log.Criticalf("Unable to read certificate: %v", err)
return
}
certBlock, _ := pem.Decode(certPEM)
cert, err := x509.ParseCertificate(certBlock.Bytes)
if err != nil {
log.Criticalf("Unable to parse certificate: %v", err)
return
}
// Read the list of revoked certs
jsonConfig, err := ioutil.ReadFile(*listFile)
if err != nil {
log.Criticalf("Unable to read list of revoked certs: %v", err)
return
}
var config Config
err = json.Unmarshal(jsonConfig, &config)
if err != nil {
log.Criticalf("Unable to parse list of revoked certs: %v", err)
return
}
// Set up PKCS#11 key
priv, err := pkcs11key.New(*module, *token, *pin, *label)
if err != nil {
log.Criticalf("Unable to instantiate PKCS#11 private key: %v", err)
return
}
// Sign the CRL
crlDER, err := cert.CreateCRL(rand.Reader, priv, config.RevokedCerts, config.ThisUpdate, config.NextUpdate)
if err != nil {
log.Criticalf("Error signing certificate: %v", err)
return
}
fmt.Println(string(pem.EncodeToMemory(&pem.Block{
Type: "X509 CRL",
Bytes: crlDER,
})))
}