org.argeo.cms/src/org/argeo/cms/internal/runtime/PkiUtils.java

   1 package org.argeo.cms.internal.runtime;
   2
   3 import java.io.IOException;
   4 import java.io.InputStream;
   5 import java.io.OutputStream;
   6 import java.io.Reader;
   7 import java.math.BigInteger;
   8 import java.net.InetAddress;
   9 import java.nio.file.Files;
  10 import java.nio.file.Path;
  11 import java.security.GeneralSecurityException;
  12 import java.security.KeyPair;
  13 import java.security.KeyPairGenerator;
  14 import java.security.KeyStore;
  15 import java.security.KeyStore.TrustedCertificateEntry;
  16 import java.security.KeyStoreException;
  17 import java.security.PrivateKey;
  18 import java.security.SecureRandom;
  19 import java.security.Security;
  20 import java.security.cert.Certificate;
  21 import java.security.cert.CertificateException;
  22 import java.security.cert.X509Certificate;
  23 import java.util.Arrays;
  24 import java.util.Date;
  25
  26 import javax.security.auth.x500.X500Principal;
  27
  28 import org.argeo.api.cms.CmsConstants;
  29 import org.argeo.api.cms.CmsLog;
  30 import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
  31 import org.bouncycastle.cert.X509CertificateHolder;
  32 import org.bouncycastle.cert.X509v3CertificateBuilder;
  33 import org.bouncycastle.cert.jcajce.JcaX509CertificateConverter;
  34 import org.bouncycastle.cert.jcajce.JcaX509v3CertificateBuilder;
  35 import org.bouncycastle.jce.provider.BouncyCastleProvider;
  36 import org.bouncycastle.openssl.PEMParser;
  37 import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
  38 import org.bouncycastle.openssl.jcajce.JceOpenSSLPKCS8DecryptorProviderBuilder;
  39 import org.bouncycastle.operator.ContentSigner;
  40 import org.bouncycastle.operator.InputDecryptorProvider;
  41 import org.bouncycastle.operator.OperatorCreationException;
  42 import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
  43 import org.bouncycastle.pkcs.PKCS8EncryptedPrivateKeyInfo;
  44 import org.bouncycastle.pkcs.PKCSException;
  45
  46 /**
  47  * Utilities around private keys and certificate, mostly wrapping BouncyCastle
  48  * implementations.
  49  */
  50 class PkiUtils {
  51         private final static CmsLog log = CmsLog.getLog(PkiUtils.class);
  52
  53         final static String PKCS12 = "PKCS12";
  54         final static String JKS = "JKS";
  55
  56         static final String DEFAULT_KEYSTORE_PATH = KernelConstants.DIR_NODE + '/' + CmsConstants.NODE + ".p12";
  57
  58         static final String DEFAULT_TRUSTSTORE_PATH = KernelConstants.DIR_NODE + "/trusted.p12";
  59
  60         static final String DEFAULT_PEM_KEY_PATH = KernelConstants.DIR_NODE + '/' + CmsConstants.NODE + ".key";
  61
  62         static final String DEFAULT_PEM_CERT_PATH = KernelConstants.DIR_NODE + '/' + CmsConstants.NODE + ".crt";
  63
  64         static final String IPA_PEM_CA_CERT_PATH = "/etc/ipa/ca.crt";
  65
  66         static final String DEFAULT_KEYSTORE_PASSWORD = "changeit";
  67
  68         private final static String SECURITY_PROVIDER;
  69         private final static String BC_PROVIDER;
  70         static {
  71                 Security.addProvider(new BouncyCastleProvider());
  72                 // BouncyCastle does not store trusted certificates properly
  73                 // TODO report it
  74                 BC_PROVIDER = "BC";
  75                 SECURITY_PROVIDER = "SUN";
  76         }
  77
  78         public static X509Certificate generateSelfSignedCertificate(KeyStore keyStore, X500Principal x500Principal,
  79                         int keySize, char[] keyPassword) {
  80                 try {
  81                         KeyPairGenerator kpGen = KeyPairGenerator.getInstance("RSA", SECURITY_PROVIDER);
  82                         kpGen.initialize(keySize, new SecureRandom());
  83                         KeyPair pair = kpGen.generateKeyPair();
  84                         Date notBefore = new Date(System.currentTimeMillis() - 10000);
  85                         Date notAfter = new Date(System.currentTimeMillis() + 365 * 24L * 3600 * 1000);
  86                         BigInteger serial = BigInteger.valueOf(System.currentTimeMillis());
  87                         X509v3CertificateBuilder certGen = new JcaX509v3CertificateBuilder(x500Principal, serial, notBefore,
  88                                         notAfter, x500Principal, pair.getPublic());
  89                         ContentSigner sigGen = new JcaContentSignerBuilder("SHA256WithRSAEncryption").setProvider(SECURITY_PROVIDER)
  90                                         .build(pair.getPrivate());
  91                         X509Certificate cert = new JcaX509CertificateConverter().setProvider(SECURITY_PROVIDER)
  92                                         .getCertificate(certGen.build(sigGen));
  93                         cert.checkValidity(new Date());
  94                         cert.verify(cert.getPublicKey());
  95
  96                         keyStore.setKeyEntry(x500Principal.getName(), pair.getPrivate(), keyPassword, new Certificate[] { cert });
  97                         return cert;
  98                 } catch (GeneralSecurityException | OperatorCreationException e) {
  99                         throw new RuntimeException("Cannot generate self-signed certificate", e);
 100                 }
 101         }
 102
 103         public static KeyStore getKeyStore(Path keyStoreFile, char[] keyStorePassword, String keyStoreType) {
 104                 try {
 105                         KeyStore store = KeyStore.getInstance(keyStoreType, "SunJSSE");
 106                         if (Files.exists(keyStoreFile)) {
 107                                 try (InputStream fis = Files.newInputStream(keyStoreFile)) {
 108                                         store.load(fis, keyStorePassword);
 109                                 }
 110                         } else {
 111                                 store.load(null);
 112                         }
 113                         return store;
 114                 } catch (GeneralSecurityException | IOException e) {
 115                         throw new RuntimeException("Cannot load keystore " + keyStoreFile, e);
 116                 }
 117         }
 118
 119         public static void saveKeyStore(Path keyStoreFile, char[] keyStorePassword, KeyStore keyStore) {
 120                 try {
 121                         try (OutputStream fis = Files.newOutputStream(keyStoreFile)) {
 122                                 keyStore.store(fis, keyStorePassword);
 123                         }
 124                 } catch (GeneralSecurityException | IOException e) {
 125                         throw new RuntimeException("Cannot save keystore " + keyStoreFile, e);
 126                 }
 127         }
 128
 129 //      public static byte[] pemToPKCS12(final String keyFile, final String cerFile, final String password)
 130 //                      throws Exception {
 131 //              // Get the private key
 132 //              FileReader reader = new FileReader(keyFile);
 133 //
 134 //              PEMReader pem = new PemReader(reader, new PasswordFinder() {
 135 //                      @Override
 136 //                      public char[] getPassword() {
 137 //                              return password.toCharArray();
 138 //                      }
 139 //              });
 140 //
 141 //              PrivateKey key = ((KeyPair) pem.readObject()).getPrivate();
 142 //
 143 //              pem.close();
 144 //              reader.close();
 145 //
 146 //              // Get the certificate
 147 //              reader = new FileReader(cerFile);
 148 //              pem = new PEMReader(reader);
 149 //
 150 //              X509Certificate cert = (X509Certificate) pem.readObject();
 151 //
 152 //              pem.close();
 153 //              reader.close();
 154 //
 155 //              // Put them into a PKCS12 keystore and write it to a byte[]
 156 //              ByteArrayOutputStream bos = new ByteArrayOutputStream();
 157 //              KeyStore ks = KeyStore.getInstance("PKCS12");
 158 //              ks.load(null);
 159 //              ks.setKeyEntry("alias", (Key) key, password.toCharArray(), new java.security.cert.Certificate[] { cert });
 160 //              ks.store(bos, password.toCharArray());
 161 //              bos.close();
 162 //              return bos.toByteArray();
 163 //      }
 164
 165         public static void loadPem(KeyStore keyStore, Reader key, char[] keyPassword, Reader cert) {
 166                 try {
 167                         X509Certificate certificate = loadPemCertificate(cert);
 168                         if (key != null) {
 169                                 PrivateKey privateKey = loadPemPrivateKey(key, keyPassword);
 170                                 keyStore.setKeyEntry(certificate.getSubjectX500Principal().getName(), privateKey, keyPassword,
 171                                                 new java.security.cert.Certificate[] { certificate });
 172                         } else {
 173                                 TrustedCertificateEntry trustedCertificateEntry = new TrustedCertificateEntry(certificate);
 174                                 keyStore.setEntry(certificate.getSubjectX500Principal().getName(), trustedCertificateEntry, null);
 175                         }
 176                 } catch (KeyStoreException e) {
 177                         throw new RuntimeException("Cannot store PEM certificate", e);
 178                 }
 179         }
 180
 181         public static PrivateKey loadPemPrivateKey(Reader reader, char[] keyPassword) {
 182                 try (PEMParser pemParser = new PEMParser(reader)) {
 183                         JcaPEMKeyConverter converter = new JcaPEMKeyConverter().setProvider(BC_PROVIDER);
 184                         Object object = pemParser.readObject();
 185                         PrivateKeyInfo privateKeyInfo;
 186                         if (object instanceof PKCS8EncryptedPrivateKeyInfo) {
 187                                 if (keyPassword == null)
 188                                         throw new IllegalArgumentException("A key password is required");
 189                                 InputDecryptorProvider decProv = new JceOpenSSLPKCS8DecryptorProviderBuilder().build(keyPassword);
 190                                 privateKeyInfo = ((PKCS8EncryptedPrivateKeyInfo) object).decryptPrivateKeyInfo(decProv);
 191                         } else if (object instanceof PrivateKeyInfo) {
 192                                 privateKeyInfo = (PrivateKeyInfo) object;
 193                         } else {
 194                                 throw new IllegalArgumentException("Unsupported format for private key");
 195                         }
 196                         return converter.getPrivateKey(privateKeyInfo);
 197                 } catch (IOException | OperatorCreationException | PKCSException e) {
 198                         throw new RuntimeException("Cannot read private key", e);
 199                 }
 200         }
 201
 202         public static X509Certificate loadPemCertificate(Reader reader) {
 203                 try (PEMParser pemParser = new PEMParser(reader)) {
 204                         X509CertificateHolder certHolder = (X509CertificateHolder) pemParser.readObject();
 205                         X509Certificate cert = new JcaX509CertificateConverter().setProvider(SECURITY_PROVIDER)
 206                                         .getCertificate(certHolder);
 207                         return cert;
 208                 } catch (IOException | CertificateException e) {
 209                         throw new RuntimeException("Cannot read private key", e);
 210                 }
 211         }
 212
 213         public static void main(String[] args) throws Exception {
 214                 final String ALGORITHM = "RSA";
 215                 final String provider = "BC";
 216                 SecureRandom secureRandom = new SecureRandom();
 217                 long begin = System.currentTimeMillis();
 218                 for (int i = 512; i < 1024; i = i + 2) {
 219                         try {
 220                                 KeyPairGenerator keyGen = KeyPairGenerator.getInstance(ALGORITHM, provider);
 221                                 keyGen.initialize(i, secureRandom);
 222                                 keyGen.generateKeyPair();
 223                         } catch (Exception e) {
 224                                 System.err.println(i + " : " + e.getMessage());
 225                         }
 226                 }
 227                 System.out.println((System.currentTimeMillis() - begin) + " ms");
 228
 229                 // // String text = "a";
 230                 // String text =
 231                 // "testtesttesttesttesttesttesttesttesttesttesttesttesttesttest";
 232                 // try {
 233                 // System.out.println(text);
 234                 // PrivateKey privateKey;
 235                 // PublicKey publicKey;
 236                 // char[] password = "changeit".toCharArray();
 237                 // String alias = "CN=test";
 238                 // KeyStore keyStore = KeyStore.getInstance("pkcs12");
 239                 // File p12file = new File("test.p12");
 240                 // p12file.delete();
 241                 // if (!p12file.exists()) {
 242                 // keyStore.load(null);
 243                 // generateSelfSignedCertificate(keyStore, new X500Principal(alias),
 244                 // 513, password);
 245                 // try (OutputStream out = new FileOutputStream(p12file)) {
 246                 // keyStore.store(out, password);
 247                 // }
 248                 // }
 249                 // try (InputStream in = new FileInputStream(p12file)) {
 250                 // keyStore.load(in, password);
 251                 // privateKey = (PrivateKey) keyStore.getKey(alias, password);
 252                 // publicKey = keyStore.getCertificateChain(alias)[0].getPublicKey();
 253                 // }
 254                 // // KeyPair key;
 255                 // // final KeyPairGenerator keyGen =
 256                 // // KeyPairGenerator.getInstance(ALGORITHM);
 257                 // // keyGen.initialize(4096, new SecureRandom());
 258                 // // long begin = System.currentTimeMillis();
 259                 // // key = keyGen.generateKeyPair();
 260                 // // System.out.println((System.currentTimeMillis() - begin) + " ms");
 261                 // // keyStore.load(null);
 262                 // // keyStore.setKeyEntry("test", key.getPrivate(), password, null);
 263                 // // try(OutputStream out=new FileOutputStream(p12file)) {
 264                 // // keyStore.store(out, password);
 265                 // // }
 266                 // // privateKey = key.getPrivate();
 267                 // // publicKey = key.getPublic();
 268                 //
 269                 // Cipher encrypt = Cipher.getInstance(ALGORITHM);
 270                 // encrypt.init(Cipher.ENCRYPT_MODE, publicKey);
 271                 // byte[] encrypted = encrypt.doFinal(text.getBytes());
 272                 // String encryptedBase64 =
 273                 // Base64.getEncoder().encodeToString(encrypted);
 274                 // System.out.println(encryptedBase64);
 275                 // byte[] encryptedFromBase64 =
 276                 // Base64.getDecoder().decode(encryptedBase64);
 277                 //
 278                 // Cipher decrypt = Cipher.getInstance(ALGORITHM);
 279                 // decrypt.init(Cipher.DECRYPT_MODE, privateKey);
 280                 // byte[] decrypted = decrypt.doFinal(encryptedFromBase64);
 281                 // System.out.println(new String(decrypted));
 282                 // } catch (Exception e) {
 283                 // e.printStackTrace();
 284                 // }
 285
 286         }
 287
 288         public static void createSelfSignedKeyStore(Path keyStorePath, char[] keyStorePassword, String keyStoreType) {
 289                 // for (Provider provider : Security.getProviders())
 290                 // System.out.println(provider.getName());
 291                 // File keyStoreFile = keyStorePath.toFile();
 292                 char[] keyPwd = Arrays.copyOf(keyStorePassword, keyStorePassword.length);
 293                 if (!Files.exists(keyStorePath)) {
 294                         try {
 295                                 Files.createDirectories(keyStorePath.getParent());
 296                                 KeyStore keyStore = getKeyStore(keyStorePath, keyStorePassword, keyStoreType);
 297                                 generateSelfSignedCertificate(keyStore,
 298                                                 new X500Principal("CN=" + InetAddress.getLocalHost().getHostName() + ",OU=UNSECURE,O=UNSECURE"),
 299                                                 1024, keyPwd);
 300                                 saveKeyStore(keyStorePath, keyStorePassword, keyStore);
 301                                 if (log.isDebugEnabled())
 302                                         log.debug("Created self-signed unsecure keystore " + keyStorePath);
 303                         } catch (Exception e) {
 304                                 try {
 305                                         if (Files.size(keyStorePath) == 0)
 306                                                 Files.delete(keyStorePath);
 307                                 } catch (IOException e1) {
 308                                         // silent
 309                                 }
 310                                 log.error("Cannot create keystore " + keyStorePath, e);
 311                         }
 312                 } else {
 313                         throw new IllegalStateException("Keystore " + keyStorePath + " already exists");
 314                 }
 315         }
 316
 317 }