parent
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/* |
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* Mini Object Storage, (C) 2015 Minio, Inc. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package x509 |
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import ( |
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"errors" |
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"fmt" |
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"math/big" |
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"net" |
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"os" |
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"time" |
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"crypto/ecdsa" |
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"crypto/elliptic" |
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"crypto/rand" |
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"crypto/rsa" |
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"crypto/x509" |
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"crypto/x509/pkix" |
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"encoding/pem" |
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) |
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// Certificates - based on http://golang.org/src/crypto/tls/generate_cert.go
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type Certificates struct { |
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CertPemBlock []byte |
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CertKeyBlock []byte |
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} |
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// Params - various x.509 parameters
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type Params struct { |
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Hostname string |
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IsCA bool |
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EcdsaCurve string |
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ValidFrom string // Date formatted as Jan 1 15:04:05 2011
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ValidFor time.Duration |
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} |
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func publicKey(priv interface{}) interface{} { |
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switch k := priv.(type) { |
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case *rsa.PrivateKey: |
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return k.Public() |
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case *ecdsa.PrivateKey: |
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return k.Public() |
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default: |
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return nil |
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} |
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} |
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func pemBlockForKey(priv interface{}) *pem.Block { |
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switch k := priv.(type) { |
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case *rsa.PrivateKey: |
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return &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(k)} |
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case *ecdsa.PrivateKey: |
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b, err := x509.MarshalECPrivateKey(k) |
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if err != nil { |
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fmt.Fprintf(os.Stderr, "Unable to marshal ECDSA private key: %v", err) |
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os.Exit(2) |
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} |
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return &pem.Block{Type: "EC PRIVATE KEY", Bytes: b} |
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default: |
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return nil |
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} |
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} |
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// GenerateCertificates - generate certificates using custom x.509 parameters
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func (tls *Certificates) GenerateCertificates(params Params) error { |
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var rsaBits = 2048 |
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var priv interface{} |
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var err error |
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switch params.EcdsaCurve { |
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case "": |
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priv, err = rsa.GenerateKey(rand.Reader, rsaBits) |
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case "P224": |
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priv, err = ecdsa.GenerateKey(elliptic.P224(), rand.Reader) |
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case "P256": |
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priv, err = ecdsa.GenerateKey(elliptic.P256(), rand.Reader) |
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case "P384": |
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priv, err = ecdsa.GenerateKey(elliptic.P384(), rand.Reader) |
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case "P521": |
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priv, err = ecdsa.GenerateKey(elliptic.P521(), rand.Reader) |
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default: |
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return errors.New("Unrecognized elliptic curve: %q", params.EcdsaCurve) |
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} |
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if err != nil { |
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return errors.New("failed to generate private key: %s", err) |
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} |
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var notBefore time.Time |
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if len(params.ValidFrom) == 0 { |
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notBefore = time.Now() |
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} else { |
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notBefore, err = time.Parse("Jan 2 15:04:05 2006", params.ValidFrom) |
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if err != nil { |
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return errors.New("Failed to parse creation date: %s", err) |
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} |
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} |
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notAfter := notBefore.Add(time.Duration(params.ValidFor)) |
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serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128) |
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serialNumber, err := rand.Int(rand.Reader, serialNumberLimit) |
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if err != nil { |
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return errors.New("failed to generate serial number: %s", err) |
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} |
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orgName := pkix.Name{ |
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Organization: []string{"Minio"}, |
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} |
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template := x509.Certificate{ |
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SerialNumber: serialNumber, |
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Subject: orgName, |
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NotBefore: notBefore, |
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NotAfter: notAfter, |
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KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature, |
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ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth}, |
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BasicConstraintsValid: true, |
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} |
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if ip := net.ParseIP(params.Hostname); ip != nil { |
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template.IPAddresses = append(template.IPAddresses, ip) |
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} else { |
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template.DNSNames = append(template.DNSNames, params.Hostname) |
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} |
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if params.IsCA { |
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template.IsCA = true |
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template.KeyUsage |= x509.KeyUsageCertSign |
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} |
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derBytes, err := x509.CreateCertificate(rand.Reader, &template, &template, publicKey(priv), priv) |
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if err != nil { |
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return errors.New("Failed to create certificate: %s", err) |
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} |
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tls.CertPemBlock = pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: derBytes}) |
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tls.CertKeyBlock = pem.EncodeToMemory(pemBlockForKey(priv)) |
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return nil |
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} |
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@ -1,44 +0,0 @@ |
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/* |
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* Mini Object Storage, (C) 2015 Minio, Inc. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package x509_test |
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import ( |
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"testing" |
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"time" |
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"github.com/minio-io/minio/pkg/utils/crypto/x509" |
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. "gopkg.in/check.v1" |
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) |
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func Test(t *testing.T) { TestingT(t) } |
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type MySuite struct{} |
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var _ = Suite(&MySuite{}) |
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func (s *MySuite) Testing(c *C) { |
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certObj := x509.Certificates{} |
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params := x509.Params{ |
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Hostname: "example.com", |
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IsCA: false, |
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EcdsaCurve: "P224", |
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ValidFrom: "Jan 1 15:04:05 2015", |
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ValidFor: time.Duration(3600), |
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} |
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err := certObj.GenerateCertificates(params) |
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c.Assert(err, IsNil) |
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} |
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