func loadKey(keyConfig cmd.KeyConfig) (priv crypto.Signer, err error) {
if keyConfig.File != "" {
var keyBytes []byte
keyBytes, err = ioutil.ReadFile(keyConfig.File)
if err != nil {
return nil, fmt.Errorf("Could not read key file %s", keyConfig.File)
}
priv, err = helpers.ParsePrivateKeyPEM(keyBytes)
return
}
pkcs11Config := keyConfig.PKCS11
if pkcs11Config.Module == "" ||
pkcs11Config.TokenLabel == "" ||
pkcs11Config.PIN == "" ||
pkcs11Config.PrivateKeyLabel == "" ||
pkcs11Config.SlotID == nil {
err = fmt.Errorf("Missing a field in pkcs11Config %#v", pkcs11Config)
return
}
priv, err = pkcs11key.New(pkcs11Config.Module,
pkcs11Config.TokenLabel, pkcs11Config.PIN, pkcs11Config.PrivateKeyLabel, *pkcs11Config.SlotID)
return
}
// NewSignerFromFile generates a new local signer from a caFile
// and a caKey file, both PEM encoded.
func NewSignerFromFile(caFile, caKeyFile string, policy *config.Signing) (*Signer, error) {
log.Debug("Loading CA: ", caFile)
ca, err := ioutil.ReadFile(caFile)
if err != nil {
return nil, err
}
log.Debug("Loading CA key: ", caKeyFile)
cakey, err := ioutil.ReadFile(caKeyFile)
if err != nil {
return nil, cferr.Wrap(cferr.CertificateError, cferr.ReadFailed, err)
}
parsedCa, err := helpers.ParseCertificatePEM(ca)
if err != nil {
return nil, err
}
priv, err := helpers.ParsePrivateKeyPEM(cakey)
if err != nil {
log.Debug("Malformed private key %v", err)
return nil, err
}
return NewSigner(priv, parsedCa, signer.DefaultSigAlgo(priv), policy)
}
// NewSignerFromFile reads the issuer cert, the responder cert and the responder key
// from PEM files, and takes an interval in seconds
func NewSignerFromFile(issuerFile, responderFile, keyFile string, interval time.Duration) (Signer, error) {
log.Debug("Loading issuer cert: ", issuerFile)
issuerBytes, err := ioutil.ReadFile(issuerFile)
if err != nil {
return nil, err
}
log.Debug("Loading responder cert: ", responderFile)
responderBytes, err := ioutil.ReadFile(responderFile)
if err != nil {
return nil, err
}
log.Debug("Loading responder key: ", keyFile)
keyBytes, err := ioutil.ReadFile(keyFile)
if err != nil {
return nil, cferr.Wrap(cferr.CertificateError, cferr.ReadFailed, err)
}
issuerCert, err := helpers.ParseCertificatePEM(issuerBytes)
if err != nil {
return nil, err
}
responderCert, err := helpers.ParseCertificatePEM(responderBytes)
if err != nil {
return nil, err
}
key, err := helpers.ParsePrivateKeyPEM(keyBytes)
if err != nil {
log.Debug("Malformed private key %v", err)
return nil, err
}
return NewSigner(issuerCert, responderCert, key, interval)
}
func TestReGenerate(t *testing.T) {
var req = &CertificateRequest{
Names: []Name{
{
C: "US",
ST: "California",
L: "San Francisco",
O: "CloudFlare",
OU: "Systems Engineering",
},
},
CN: "cloudflare.com",
Hosts: []string{"cloudflare.com", "www.cloudflare.com", "192.168.0.1"},
KeyRequest: &BasicKeyRequest{"ecdsa", 256},
}
csr, key, err := ParseRequest(req)
if err != nil {
t.Fatalf("%v", err)
}
priv, err := helpers.ParsePrivateKeyPEM(key)
if err != nil {
t.Fatalf("%v", err)
}
csr, err = Generate(priv, req)
if err != nil {
t.Fatalf("%v", err)
}
if _, _, err = helpers.ParseCSR(csr); err != nil {
t.Fatalf("%v", err)
}
}
func loadPrivateKey(keyConfig cmd.KeyConfig) (crypto.Signer, error) {
if keyConfig.File != "" {
keyBytes, err := ioutil.ReadFile(keyConfig.File)
if err != nil {
return nil, fmt.Errorf("Could not read key file %s", keyConfig.File)
}
return helpers.ParsePrivateKeyPEM(keyBytes)
}
var pkcs11Config *pkcs11key.Config
if keyConfig.ConfigFile != "" {
contents, err := ioutil.ReadFile(keyConfig.ConfigFile)
if err != nil {
return nil, err
}
pkcs11Config = new(pkcs11key.Config)
err = json.Unmarshal(contents, pkcs11Config)
if err != nil {
return nil, err
}
} else {
pkcs11Config = keyConfig.PKCS11
}
if pkcs11Config.Module == "" ||
pkcs11Config.TokenLabel == "" ||
pkcs11Config.PIN == "" ||
pkcs11Config.PrivateKeyLabel == "" {
return nil, fmt.Errorf("Missing a field in pkcs11Config %#v", pkcs11Config)
}
return pkcs11key.New(pkcs11Config.Module,
pkcs11Config.TokenLabel, pkcs11Config.PIN, pkcs11Config.PrivateKeyLabel)
}
func TestCAIssuing(t *testing.T) {
var caCerts = []string{testCaFile, testECDSACaFile}
var caKeys = []string{testCaKeyFile, testECDSACaKeyFile}
var interCSRs = []string{ecdsaInterCSR, rsaInterCSR}
var interKeys = []string{ecdsaInterKey, rsaInterKey}
var CAPolicy = &config.Signing{
Default: &config.SigningProfile{
Usage: []string{"cert sign", "crl sign"},
ExpiryString: "1h",
Expiry: 1 * time.Hour,
CA: true,
},
}
var hostname = "cloudflare-inter.com"
// Each RSA or ECDSA root CA issues two intermediate CAs (one ECDSA and one RSA).
// For each intermediate CA, use it to issue additional RSA and ECDSA intermediate CSRs.
for i, caFile := range caCerts {
caKeyFile := caKeys[i]
s := newCustomSigner(t, caFile, caKeyFile)
s.policy = CAPolicy
for j, csr := range interCSRs {
csrBytes, _ := ioutil.ReadFile(csr)
certBytes, err := s.Sign(signer.SignRequest{Hosts: signer.SplitHosts(hostname), Request: string(csrBytes)})
if err != nil {
t.Fatal(err)
}
interCert, err := helpers.ParseCertificatePEM(certBytes)
if err != nil {
t.Fatal(err)
}
keyBytes, _ := ioutil.ReadFile(interKeys[j])
interKey, _ := helpers.ParsePrivateKeyPEM(keyBytes)
interSigner := &Signer{interCert, interKey, CAPolicy, signer.DefaultSigAlgo(interKey)}
for _, anotherCSR := range interCSRs {
anotherCSRBytes, _ := ioutil.ReadFile(anotherCSR)
bytes, err := interSigner.Sign(
signer.SignRequest{
Hosts: signer.SplitHosts(hostname),
Request: string(anotherCSRBytes),
})
if err != nil {
t.Fatal(err)
}
cert, err := helpers.ParseCertificatePEM(bytes)
if err != nil {
t.Fatal(err)
}
if cert.SignatureAlgorithm != interSigner.SigAlgo() {
t.Fatal("Cert Signature Algorithm does not match the issuer.")
}
}
}
}
}
func init() {
var err error
caKey, err = helpers.ParsePrivateKeyPEM(mustRead(caKeyFile))
if err != nil {
panic(fmt.Sprintf("Unable to parse %s: %s", caKeyFile, err))
}
caCert, err = core.LoadCert(caCertFile)
if err != nil {
panic(fmt.Sprintf("Unable to parse %s: %s", caCertFile, err))
}
}
func loadIssuerKey(filename string) (issuerKey crypto.Signer, err error) {
if filename == "" {
err = errors.New("IssuerKey must be provided in test mode.")
return
}
pem, err := ioutil.ReadFile(filename)
if err != nil {
return
}
issuerKey, err = helpers.ParsePrivateKeyPEM(pem)
return
}
func loadKey(keyConfig KeyConfig) (priv crypto.Signer, err error) {
if keyConfig.File != "" {
var keyBytes []byte
keyBytes, err = ioutil.ReadFile(keyConfig.File)
if err != nil {
return nil, fmt.Errorf("Could not read key file %s", keyConfig.File)
}
priv, err = helpers.ParsePrivateKeyPEM(keyBytes)
return
}
pkcs11Config := keyConfig.PKCS11
priv, err = pkcs11key.New(pkcs11Config.Module,
pkcs11Config.Token, pkcs11Config.PIN, pkcs11Config.Label)
return
}
func TestMain(m *testing.M) {
caKeyPEM, _ := ioutil.ReadFile(caKeyFile)
caKey, _ := helpers.ParsePrivateKeyPEM(caKeyPEM)
caCertPEM, _ := ioutil.ReadFile(caCertFile)
caCert, _ := helpers.ParseCertificatePEM(caCertPEM)
// Create an online CFSSL instance
// This is designed to mimic what LE plans to do
authHandler, _ := auth.New(authKey, nil)
policy := &cfsslConfig.Signing{
Profiles: map[string]*cfsslConfig.SigningProfile{
profileName: &cfsslConfig.SigningProfile{
Usage: []string{"server auth"},
CA: false,
IssuerURL: []string{"http://not-example.com/issuer-url"},
OCSP: "http://not-example.com/ocsp",
CRL: "http://not-example.com/crl",
Policies: []asn1.ObjectIdentifier{
asn1.ObjectIdentifier{2, 23, 140, 1, 2, 1},
},
Expiry: 8760 * time.Hour,
Backdate: time.Hour,
Provider: authHandler,
CSRWhitelist: &cfsslConfig.CSRWhitelist{
PublicKeyAlgorithm: true,
PublicKey: true,
SignatureAlgorithm: true,
},
},
},
Default: &cfsslConfig.SigningProfile{
Expiry: time.Hour,
},
}
cfsslSigner, _ = local.NewSigner(caKey, caCert, x509.SHA256WithRSA, policy)
signHandler, _ := apisign.NewAuthHandlerFromSigner(cfsslSigner)
http.Handle("/api/v1/cfssl/authsign", signHandler)
// This goroutine should get killed when main() return
go (func() { http.ListenAndServe(hostPort, nil) })()
os.Exit(m.Run())
}
// New creates a new root certificate from the certificate request.
func New(req *csr.CertificateRequest) (cert, key []byte, err error) {
if req.CA != nil {
if req.CA.Expiry != "" {
CAPolicy.Default.ExpiryString = req.CA.Expiry
CAPolicy.Default.Expiry, err = time.ParseDuration(req.CA.Expiry)
}
if req.CA.PathLength != 0 {
signer.MaxPathLen = req.CA.PathLength
}
}
g := &csr.Generator{Validator: validator}
csr, key, err := g.ProcessRequest(req)
if err != nil {
log.Errorf("failed to process request: %v", err)
key = nil
return
}
priv, err := helpers.ParsePrivateKeyPEM(key)
if err != nil {
log.Errorf("failed to parse private key: %v", err)
return
}
s, err := local.NewSigner(priv, nil, signer.DefaultSigAlgo(priv), nil)
if err != nil {
log.Errorf("failed to create signer: %v", err)
return
}
s.SetPolicy(CAPolicy)
signReq := signer.SignRequest{Hosts: req.Hosts, Request: string(csr)}
cert, err = s.Sign(signReq)
return
}
// BundleFromPEM builds a certificate bundle from the set of byte
// slices containing the PEM-encoded certificate(s), private key.
func (b *Bundler) BundleFromPEM(certsPEM, keyPEM []byte, flavor BundleFlavor) (*Bundle, error) {
log.Debug("bundling from PEM files")
var key crypto.Signer
var err error
if len(keyPEM) != 0 {
key, err = helpers.ParsePrivateKeyPEM(keyPEM)
if err != nil {
log.Debugf("failed to parse private key: %v", err)
return nil, err
}
}
certs, err := helpers.ParseCertificatesPEM(certsPEM)
if err != nil {
log.Debugf("failed to parse certificates: %v", err)
return nil, err
} else if len(certs) == 0 {
log.Debugf("no certificates found")
return nil, errors.New(errors.CertificateError, errors.DecodeFailed)
}
log.Debugf("bundle ready")
return b.Bundle(certs, key, flavor)
}
func selfSignMain(args []string, c cli.Config) (err error) {
if c.Hostname == "" && !c.IsCA {
c.Hostname, args, err = cli.PopFirstArgument(args)
if err != nil {
return
}
}
csrFile, args, err := cli.PopFirstArgument(args)
if err != nil {
return
}
csrFileBytes, err := cli.ReadStdin(csrFile)
if err != nil {
return
}
var req csr.CertificateRequest
err = json.Unmarshal(csrFileBytes, &req)
if err != nil {
return
}
var key, csrPEM []byte
g := &csr.Generator{Validator: genkey.Validator}
csrPEM, key, err = g.ProcessRequest(&req)
if err != nil {
key = nil
return
}
priv, err := helpers.ParsePrivateKeyPEM(key)
if err != nil {
key = nil
return
}
var profile *config.SigningProfile
// If there is a config, use its signing policy. Otherwise, leave policy == nil
// and NewSigner will use DefaultConfig().
if c.CFG != nil {
if c.Profile != "" && c.CFG.Signing.Profiles != nil {
profile = c.CFG.Signing.Profiles[c.Profile]
}
}
if profile == nil {
profile = config.DefaultConfig()
profile.Expiry = 2190 * time.Hour
}
cert, err := selfsign.Sign(priv, csrPEM, profile)
if err != nil {
key = nil
priv = nil
return
}
fmt.Fprintf(os.Stderr, `*** WARNING ***
Self-signed certificates are dangerous. Use this self-signed
certificate at your own risk.
It is strongly recommended that these certificates NOT be used
in production.
*** WARNING ***
`)
cli.PrintCert(key, csrPEM, cert)
return
}
func TestInitCA(t *testing.T) {
var req *csr.CertificateRequest
hostname := "cloudflare.com"
for _, param := range validKeyParams {
req = &csr.CertificateRequest{
Names: []csr.Name{
{
C: "US",
ST: "California",
L: "San Francisco",
O: "CloudFlare",
OU: "Systems Engineering",
},
},
CN: hostname,
Hosts: []string{hostname, "www." + hostname},
KeyRequest: &csr.KeyRequest{
Algo: param.keyAlgo,
Size: param.keyLen,
},
}
certBytes, keyBytes, err := New(req)
if err != nil {
t.Fatal("InitCA failed:", err)
}
key, err := helpers.ParsePrivateKeyPEM(keyBytes)
if err != nil {
t.Fatal("InitCA private key parsing failed:", err)
}
cert, err := helpers.ParseCertificatePEM(certBytes)
if err != nil {
t.Fatal("InitCA cert parsing failed:", err)
}
// Verify key parameters.
switch req.KeyRequest.Algo {
case "rsa":
if cert.PublicKey.(*rsa.PublicKey).N.BitLen() != param.keyLen {
t.Fatal("Cert key length mismatch.")
}
if key.(*rsa.PrivateKey).N.BitLen() != param.keyLen {
t.Fatal("Private key length mismatch.")
}
case "ecdsa":
if cert.PublicKey.(*ecdsa.PublicKey).Curve.Params().BitSize != param.keyLen {
t.Fatal("Cert key length mismatch.")
}
if key.(*ecdsa.PrivateKey).Curve.Params().BitSize != param.keyLen {
t.Fatal("Private key length mismatch.")
}
}
// Start a signer
var CAPolicy = &config.Signing{
Default: &config.SigningProfile{
Usage: []string{"cert sign", "crl sign"},
ExpiryString: "300s",
Expiry: 300 * time.Second,
CA: true,
},
}
s, err := local.NewSigner(key, cert, signer.DefaultSigAlgo(key), nil)
if err != nil {
t.Fatal("Signer Creation error:", err)
}
s.SetPolicy(CAPolicy)
// Sign RSA and ECDSA customer CSRs.
for _, csrFile := range csrFiles {
csrBytes, err := ioutil.ReadFile(csrFile)
if err != nil {
t.Fatal("CSR loading error:", err)
}
req := signer.SignRequest{
Request: string(csrBytes),
Hosts: signer.SplitHosts(hostname),
Profile: "",
Label: "",
}
bytes, err := s.Sign(req)
if err != nil {
t.Fatal(err)
}
customerCert, _ := helpers.ParseCertificatePEM(bytes)
if customerCert.SignatureAlgorithm != s.SigAlgo() {
t.Fatal("Signature Algorithm mismatch")
}
err = customerCert.CheckSignatureFrom(cert)
if err != nil {
t.Fatal("Signing CSR failed.", err)
}
}
}
}
// NewFromPEM creates a new root certificate from the key file passed in.
func NewFromPEM(req *csr.CertificateRequest, keyFile string) (cert []byte, err error) {
if req.CA != nil {
if req.CA.Expiry != "" {
CAPolicy.Default.ExpiryString = req.CA.Expiry
CAPolicy.Default.Expiry, err = time.ParseDuration(req.CA.Expiry)
}
if req.CA.PathLength != 0 {
signer.MaxPathLen = req.CA.PathLength
}
}
privData, err := ioutil.ReadFile(keyFile)
if err != nil {
return nil, err
}
priv, err := helpers.ParsePrivateKeyPEM(privData)
if err != nil {
return nil, err
}
var sigAlgo x509.SignatureAlgorithm
switch priv := priv.(type) {
case *rsa.PrivateKey:
bitLength := priv.PublicKey.N.BitLen()
switch {
case bitLength >= 4096:
sigAlgo = x509.SHA512WithRSA
case bitLength >= 3072:
sigAlgo = x509.SHA384WithRSA
case bitLength >= 2048:
sigAlgo = x509.SHA256WithRSA
default:
sigAlgo = x509.SHA1WithRSA
}
case *ecdsa.PrivateKey:
switch priv.Curve {
case elliptic.P521():
sigAlgo = x509.ECDSAWithSHA512
case elliptic.P384():
sigAlgo = x509.ECDSAWithSHA384
case elliptic.P256():
sigAlgo = x509.ECDSAWithSHA256
default:
sigAlgo = x509.ECDSAWithSHA1
}
default:
sigAlgo = x509.UnknownSignatureAlgorithm
}
var tpl = x509.CertificateRequest{
Subject: req.Name(),
SignatureAlgorithm: sigAlgo,
DNSNames: req.Hosts,
}
certReq, err := x509.CreateCertificateRequest(rand.Reader, &tpl, priv)
if err != nil {
log.Errorf("failed to generate a CSR: %v", err)
// The use of CertificateError was a matter of some
// debate; it is the one edge case in which a new
// error category specifically for CSRs might be
// useful, but it was deemed that one edge case did
// not a new category justify.
err = cferr.Wrap(cferr.CertificateError, cferr.BadRequest, err)
return
}
p := &pem.Block{
Type: "CERTIFICATE REQUEST",
Bytes: certReq,
}
certReq = pem.EncodeToMemory(p)
s, err := local.NewSigner(priv, nil, signer.DefaultSigAlgo(priv), nil)
if err != nil {
log.Errorf("failed to create signer: %v", err)
return
}
s.SetPolicy(CAPolicy)
signReq := signer.SignRequest{Request: string(certReq)}
cert, err = s.Sign(signReq)
return
}