// NewPKCS11Signer returns a new PKCS #11 signer.
func NewPKCS11Signer(cfg ocspConfig.Config) (ocsp.Signer, error) {
log.Debugf("Loading PKCS #11 module %s", cfg.PKCS11.Module)
certData, err := ioutil.ReadFile(cfg.CACertFile)
if err != nil {
return nil, errors.New(errors.CertificateError, errors.ReadFailed)
}
cert, err := helpers.ParseCertificatePEM(certData)
if err != nil {
return nil, err
}
PKCS11 := cfg.PKCS11
priv, err := pkcs11key.New(PKCS11.Module, PKCS11.Token, PKCS11.PIN,
PKCS11.Label)
if err != nil {
return nil, errors.New(errors.PrivateKeyError, errors.ReadFailed)
}
return ocsp.NewSigner(cert, cert, priv, cfg.Interval)
}
func makeInternalIssuers(
issuers []Issuer,
policy *cfsslConfig.Signing,
lifespanOCSP time.Duration,
) (map[string]*internalIssuer, error) {
if len(issuers) == 0 {
return nil, errors.New("No issuers specified.")
}
internalIssuers := make(map[string]*internalIssuer)
for _, iss := range issuers {
if iss.Cert == nil || iss.Signer == nil {
return nil, errors.New("Issuer with nil cert or signer specified.")
}
eeSigner, err := local.NewSigner(iss.Signer, iss.Cert, x509.SHA256WithRSA, policy)
if err != nil {
return nil, err
}
// Set up our OCSP signer. Note this calls for both the issuer cert and the
// OCSP signing cert, which are the same in our case.
ocspSigner, err := ocsp.NewSigner(iss.Cert, iss.Cert, iss.Signer, lifespanOCSP)
if err != nil {
return nil, err
}
cn := iss.Cert.Subject.CommonName
if internalIssuers[cn] != nil {
return nil, errors.New("Multiple issuer certs with the same CommonName are not supported")
}
internalIssuers[cn] = &internalIssuer{
cert: iss.Cert,
eeSigner: eeSigner,
ocspSigner: ocspSigner,
}
}
return internalIssuers, nil
}