List of usage examples for org.bouncycastle.openssl.jcajce JcaPEMWriter writeObject
public void writeObject(Object obj, PEMEncryptor encryptor) throws IOException
From source file:com.gitblit.utils.X509Utils.java
License:Apache License
/** * Creates a new client certificate PKCS#12 and PEM store. Any existing * stores are destroyed.//w w w.jav a2s . c om * * @param clientMetadata a container for dynamic parameters needed for generation * @param caKeystoreFile * @param caKeystorePassword * @param targetFolder * @return */ public static X509Certificate newClientCertificate(X509Metadata clientMetadata, PrivateKey caPrivateKey, X509Certificate caCert, File targetFolder) { try { KeyPair pair = newKeyPair(); X500Name userDN = buildDistinguishedName(clientMetadata); X500Name issuerDN = new X500Name(PrincipalUtil.getIssuerX509Principal(caCert).getName()); // create a new certificate signed by the Gitblit CA certificate X509v3CertificateBuilder certBuilder = new JcaX509v3CertificateBuilder(issuerDN, BigInteger.valueOf(System.currentTimeMillis()), clientMetadata.notBefore, clientMetadata.notAfter, userDN, pair.getPublic()); JcaX509ExtensionUtils extUtils = new JcaX509ExtensionUtils(); certBuilder.addExtension(X509Extension.subjectKeyIdentifier, false, extUtils.createSubjectKeyIdentifier(pair.getPublic())); certBuilder.addExtension(X509Extension.basicConstraints, false, new BasicConstraints(false)); certBuilder.addExtension(X509Extension.authorityKeyIdentifier, false, extUtils.createAuthorityKeyIdentifier(caCert.getPublicKey())); certBuilder.addExtension(X509Extension.keyUsage, true, new KeyUsage(KeyUsage.keyEncipherment | KeyUsage.digitalSignature)); if (!StringUtils.isEmpty(clientMetadata.emailAddress)) { GeneralNames subjectAltName = new GeneralNames( new GeneralName(GeneralName.rfc822Name, clientMetadata.emailAddress)); certBuilder.addExtension(X509Extension.subjectAlternativeName, false, subjectAltName); } ContentSigner signer = new JcaContentSignerBuilder(SIGNING_ALGORITHM).setProvider(BC) .build(caPrivateKey); X509Certificate userCert = new JcaX509CertificateConverter().setProvider(BC) .getCertificate(certBuilder.build(signer)); PKCS12BagAttributeCarrier bagAttr = (PKCS12BagAttributeCarrier) pair.getPrivate(); bagAttr.setBagAttribute(PKCSObjectIdentifiers.pkcs_9_at_localKeyId, extUtils.createSubjectKeyIdentifier(pair.getPublic())); // confirm the validity of the user certificate userCert.checkValidity(); userCert.verify(caCert.getPublicKey()); userCert.getIssuerDN().equals(caCert.getSubjectDN()); // verify user certificate chain verifyChain(userCert, caCert); targetFolder.mkdirs(); // save certificate, stamped with unique name String date = new SimpleDateFormat("yyyyMMdd").format(new Date()); String id = date; File certFile = new File(targetFolder, id + ".cer"); int count = 0; while (certFile.exists()) { id = date + "_" + Character.toString((char) (0x61 + count)); certFile = new File(targetFolder, id + ".cer"); count++; } // save user private key, user certificate and CA certificate to a PKCS#12 store File p12File = new File(targetFolder, clientMetadata.commonName + ".p12"); if (p12File.exists()) { p12File.delete(); } KeyStore userStore = openKeyStore(p12File, clientMetadata.password); userStore.setKeyEntry( MessageFormat.format("Gitblit ({0}) {1} {2}", clientMetadata.serverHostname, clientMetadata.userDisplayname, id), pair.getPrivate(), null, new Certificate[] { userCert }); userStore.setCertificateEntry( MessageFormat.format("Gitblit ({0}) Certificate Authority", clientMetadata.serverHostname), caCert); saveKeyStore(p12File, userStore, clientMetadata.password); // save user private key, user certificate, and CA certificate to a PEM store File pemFile = new File(targetFolder, clientMetadata.commonName + ".pem"); if (pemFile.exists()) { pemFile.delete(); } JcePEMEncryptorBuilder builder = new JcePEMEncryptorBuilder("DES-EDE3-CBC"); builder.setSecureRandom(new SecureRandom()); PEMEncryptor pemEncryptor = builder.build(clientMetadata.password.toCharArray()); JcaPEMWriter pemWriter = new JcaPEMWriter(new FileWriter(pemFile)); pemWriter.writeObject(pair.getPrivate(), pemEncryptor); pemWriter.writeObject(userCert); pemWriter.writeObject(caCert); pemWriter.flush(); pemWriter.close(); // save certificate after successfully creating the key stores saveCertificate(userCert, certFile); // update serial number in metadata object clientMetadata.serialNumber = userCert.getSerialNumber().toString(); return userCert; } catch (Throwable t) { throw new RuntimeException("Failed to generate client certificate!", t); } }