Support PEM encrypted certificates.
[lgpl/argeo-commons.git] / org.argeo.cms / src / org / argeo / cms / internal / kernel / PkiUtils.java
index 94a9b1f45ca1cba17ae60186e8d8ba77a0631d8d..2105e05d01c91911874d5472683ac9490f0f6827 100644 (file)
@@ -1,27 +1,42 @@
 package org.argeo.cms.internal.kernel;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Reader;
 import java.math.BigInteger;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.security.GeneralSecurityException;
 import java.security.KeyPair;
 import java.security.KeyPairGenerator;
 import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.PrivateKey;
 import java.security.SecureRandom;
 import java.security.Security;
 import java.security.cert.Certificate;
+import java.security.cert.CertificateException;
 import java.security.cert.X509Certificate;
 import java.util.Date;
 
 import javax.security.auth.x500.X500Principal;
 
-import org.argeo.cms.CmsException;
+import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
+import org.bouncycastle.cert.X509CertificateHolder;
 import org.bouncycastle.cert.X509v3CertificateBuilder;
 import org.bouncycastle.cert.jcajce.JcaX509CertificateConverter;
 import org.bouncycastle.cert.jcajce.JcaX509v3CertificateBuilder;
 import org.bouncycastle.jce.provider.BouncyCastleProvider;
+import org.bouncycastle.openssl.PEMParser;
+import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
+import org.bouncycastle.openssl.jcajce.JceOpenSSLPKCS8DecryptorProviderBuilder;
 import org.bouncycastle.operator.ContentSigner;
+import org.bouncycastle.operator.InputDecryptorProvider;
+import org.bouncycastle.operator.OperatorCreationException;
 import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
+import org.bouncycastle.pkcs.PKCS8EncryptedPrivateKeyInfo;
+import org.bouncycastle.pkcs.PKCSException;
 
 /**
  * Utilities around private keys and certificate, mostly wrapping BouncyCastle
@@ -56,38 +71,117 @@ class PkiUtils {
 
                        keyStore.setKeyEntry(x500Principal.getName(), pair.getPrivate(), keyPassword, new Certificate[] { cert });
                        return cert;
-               } catch (Exception e) {
-                       throw new CmsException("Cannot generate self-signed certificate", e);
+               } catch (GeneralSecurityException | OperatorCreationException e) {
+                       throw new RuntimeException("Cannot generate self-signed certificate", e);
                }
        }
 
-       public static KeyStore getKeyStore(File keyStoreFile, char[] keyStorePassword, String keyStoreType) {
+       public static KeyStore getKeyStore(Path keyStoreFile, char[] keyStorePassword, String keyStoreType) {
                try {
                        KeyStore store = KeyStore.getInstance(keyStoreType, SECURITY_PROVIDER);
-                       if (keyStoreFile.exists()) {
-                               try (FileInputStream fis = new FileInputStream(keyStoreFile)) {
+                       if (Files.exists(keyStoreFile)) {
+                               try (InputStream fis = Files.newInputStream(keyStoreFile)) {
                                        store.load(fis, keyStorePassword);
                                }
                        } else {
                                store.load(null);
                        }
                        return store;
-               } catch (Exception e) {
-                       throw new CmsException("Cannot load keystore " + keyStoreFile, e);
+               } catch (GeneralSecurityException | IOException e) {
+                       throw new RuntimeException("Cannot load keystore " + keyStoreFile, e);
                }
        }
 
-       public static void saveKeyStore(File keyStoreFile, char[] keyStorePassword, KeyStore keyStore) {
+       public static void saveKeyStore(Path keyStoreFile, char[] keyStorePassword, KeyStore keyStore) {
                try {
-                       try (FileOutputStream fis = new FileOutputStream(keyStoreFile)) {
+                       try (OutputStream fis = Files.newOutputStream(keyStoreFile)) {
                                keyStore.store(fis, keyStorePassword);
                        }
-               } catch (Exception e) {
-                       throw new CmsException("Cannot save keystore " + keyStoreFile, e);
+               } catch (GeneralSecurityException | IOException e) {
+                       throw new RuntimeException("Cannot save keystore " + keyStoreFile, e);
                }
        }
 
-       public static void main(String[] args) {
+//     public static byte[] pemToPKCS12(final String keyFile, final String cerFile, final String password)
+//                     throws Exception {
+//             // Get the private key
+//             FileReader reader = new FileReader(keyFile);
+//
+//             PEMReader pem = new PemReader(reader, new PasswordFinder() {
+//                     @Override
+//                     public char[] getPassword() {
+//                             return password.toCharArray();
+//                     }
+//             });
+//
+//             PrivateKey key = ((KeyPair) pem.readObject()).getPrivate();
+//
+//             pem.close();
+//             reader.close();
+//
+//             // Get the certificate
+//             reader = new FileReader(cerFile);
+//             pem = new PEMReader(reader);
+//
+//             X509Certificate cert = (X509Certificate) pem.readObject();
+//
+//             pem.close();
+//             reader.close();
+//
+//             // Put them into a PKCS12 keystore and write it to a byte[]
+//             ByteArrayOutputStream bos = new ByteArrayOutputStream();
+//             KeyStore ks = KeyStore.getInstance("PKCS12");
+//             ks.load(null);
+//             ks.setKeyEntry("alias", (Key) key, password.toCharArray(), new java.security.cert.Certificate[] { cert });
+//             ks.store(bos, password.toCharArray());
+//             bos.close();
+//             return bos.toByteArray();
+//     }
+
+       public static void loadPem(KeyStore keyStore, Reader key, char[] keyPassword, Reader cert) {
+               PrivateKey privateKey = loadPemPrivateKey(key, keyPassword);
+               X509Certificate certificate = loadPemCertificate(cert);
+               try {
+                       keyStore.setKeyEntry(certificate.getSubjectX500Principal().getName(), privateKey, keyPassword,
+                                       new java.security.cert.Certificate[] { certificate });
+               } catch (KeyStoreException e) {
+                       throw new RuntimeException("Cannot store PEM certificate", e);
+               }
+       }
+
+       public static PrivateKey loadPemPrivateKey(Reader reader, char[] keyPassword) {
+               try (PEMParser pemParser = new PEMParser(reader)) {
+                       JcaPEMKeyConverter converter = new JcaPEMKeyConverter().setProvider("BC");
+                       Object object = pemParser.readObject();
+                       PrivateKeyInfo privateKeyInfo;
+                       if (object instanceof PKCS8EncryptedPrivateKeyInfo) {
+                               if (keyPassword == null)
+                                       throw new IllegalArgumentException("A key password is required");
+                               InputDecryptorProvider decProv = new JceOpenSSLPKCS8DecryptorProviderBuilder().build(keyPassword);
+                               privateKeyInfo = ((PKCS8EncryptedPrivateKeyInfo) object).decryptPrivateKeyInfo(decProv);
+                       } else if (object instanceof PrivateKeyInfo) {
+                               privateKeyInfo = (PrivateKeyInfo) object;
+                       } else {
+                               throw new IllegalArgumentException("Unsupported format for private key");
+                       }
+                       return converter.getPrivateKey(privateKeyInfo);
+               } catch (IOException | OperatorCreationException | PKCSException e) {
+                       throw new RuntimeException("Cannot read private key", e);
+               }
+       }
+
+       public static X509Certificate loadPemCertificate(Reader reader) {
+               try (PEMParser pemParser = new PEMParser(reader)) {
+                       X509CertificateHolder certHolder = (X509CertificateHolder) pemParser.readObject();
+                       X509Certificate cert = new JcaX509CertificateConverter().setProvider(SECURITY_PROVIDER)
+                                       .getCertificate(certHolder);
+                       return cert;
+               } catch (IOException | CertificateException e) {
+                       throw new RuntimeException("Cannot read private key", e);
+               }
+       }
+
+       public static void main(String[] args) throws Exception {
                final String ALGORITHM = "RSA";
                final String provider = "BC";
                SecureRandom secureRandom = new SecureRandom();