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/**
* ============LICENSE_START====================================================
* org.onap.aaf
* ===========================================================================
* Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
* ===========================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END====================================================
*
*/
package org.onap.aaf.auth.cm.ca;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.math.BigInteger;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.security.KeyStore.Entry;
import java.security.KeyStore.PrivateKeyEntry;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.Provider;
import java.security.SecureRandom;
import java.security.UnrecoverableEntryException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.security.interfaces.RSAPublicKey;
import java.util.ArrayList;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.List;
import org.bouncycastle.asn1.x500.X500Name;
import org.bouncycastle.asn1.x500.X500NameBuilder;
import org.bouncycastle.asn1.x509.BasicConstraints;
import org.bouncycastle.asn1.x509.ExtendedKeyUsage;
import org.bouncycastle.asn1.x509.Extension;
import org.bouncycastle.asn1.x509.GeneralName;
import org.bouncycastle.asn1.x509.GeneralNames;
import org.bouncycastle.asn1.x509.KeyPurposeId;
import org.bouncycastle.asn1.x509.KeyUsage;
import org.bouncycastle.cert.X509v3CertificateBuilder;
import org.bouncycastle.cert.jcajce.JcaX509CertificateConverter;
import org.bouncycastle.cert.jcajce.JcaX509ExtensionUtils;
import org.bouncycastle.crypto.params.RSAKeyParameters;
import org.bouncycastle.crypto.util.SubjectPublicKeyInfoFactory;
import org.bouncycastle.operator.OperatorCreationException;
import org.onap.aaf.auth.cm.cert.BCFactory;
import org.onap.aaf.auth.cm.cert.CSRMeta;
import org.onap.aaf.auth.cm.cert.RDN;
import org.onap.aaf.auth.env.NullTrans;
import org.onap.aaf.cadi.Access;
import org.onap.aaf.cadi.Access.Level;
import org.onap.aaf.cadi.cm.CertException;
import org.onap.aaf.cadi.cm.Factory;
import org.onap.aaf.misc.env.Env;
import org.onap.aaf.misc.env.TimeTaken;
import org.onap.aaf.misc.env.Trans;
public class LocalCA extends CA {
// Extensions
private static final KeyPurposeId[] ASN_WebUsage = new KeyPurposeId[] {
KeyPurposeId.id_kp_serverAuth, // WebServer
KeyPurposeId.id_kp_clientAuth};// WebClient
private final PrivateKey caKey;
private final X500Name issuer;
private final SecureRandom random = new SecureRandom();
private byte[] serialish;
private final X509ChainWithIssuer x509cwi; // "Cert" is CACert
public LocalCA(Access access, final String name, final String env, final String[][] params) throws IOException, CertException {
super(access, name, env);
serialish = new byte[24];
if(params.length<1 || params[0].length<2) {
throw new IOException("LocalCA expects cm_ca.<ca name>=org.onap.aaf.auth.cm.ca.LocalCA,<full path to key file>[;<Full Path to Trust Chain, ending with actual CA>]+");
}
// Read in the Private Key
String configured;
File f = new File(params[0][0]);
if(f.exists() && f.isFile()) {
String fileName = f.getName();
if(fileName.endsWith(".key")) {
caKey = Factory.toPrivateKey(NullTrans.singleton(),f);
List<FileReader> frs = new ArrayList<FileReader>(params.length-1);
try {
String dir = access.getProperty(CM_PUBLIC_DIR, "");
if(!"".equals(dir) && !dir.endsWith("/")) {
dir = dir + '/';
}
String path;
for(int i=1; i<params[0].length; ++i) { // first param is Private Key, remainder are TrustChain
path = !params[0][i].contains("/")?dir+params[0][i]:params[0][i];
access.printf(Level.INIT, "Loading a TrustChain Member for %s from %s\n",name, path);
frs.add(new FileReader(path));
}
x509cwi = new X509ChainWithIssuer(frs);
} finally {
for(FileReader fr : frs) {
if(fr!=null) {
fr.close();
}
}
}
configured = "Configured with " + fileName;
} else {
if(params.length<1 || params[0].length<3) {
throw new CertException("LocalCA parameters must be <keystore [.p12|.pkcs12|.jks|.pkcs11(sun only)]; <alias>; enc:<encrypted Keystore Password>>");
}
try {
Provider p;
KeyStore keyStore;
FileInputStream fis = null;
if(fileName.endsWith(".pkcs11")) {
String ksType;
p = Factory.getSecurityProvider(ksType="PKCS11",params);
keyStore = KeyStore.getInstance(ksType,p);
} else if(fileName.endsWith(".jks")) {
keyStore = KeyStore.getInstance("JKS");
fis = new FileInputStream(f);
} else if(fileName.endsWith(".p12") || fileName.endsWith(".pkcs12")) {
keyStore = KeyStore.getInstance("PKCS12");
fis = new FileInputStream(f);
} else {
throw new CertException("Unknown Keystore type from filename " + fileName);
}
KeyStore.ProtectionParameter keyPass;
try {
String pass = access.decrypt(params[0][2]/*encrypted passcode*/, true);
if(pass==null) {
throw new CertException("Passcode for " + fileName + " cannot be decrypted.");
}
char[] ksPass = pass.toCharArray();
//Assuming Key Pass is same as Keystore Pass
keyPass = new KeyStore.PasswordProtection(ksPass);
keyStore.load(fis,ksPass);
} finally {
if (fis != null)
fis.close();
}
Entry entry;
if(fileName.endsWith(".pkcs11")) {
entry = keyStore.getEntry(params[0][1]/*alias*/, null);
} else {
entry = keyStore.getEntry(params[0][1]/*alias*/, keyPass);
}
if(entry==null) {
throw new CertException("There is no Keystore entry with name '" + params[0][1] +'\'');
}
PrivateKeyEntry privateKeyEntry = (PrivateKeyEntry)entry;
caKey = privateKeyEntry.getPrivateKey();
x509cwi = new X509ChainWithIssuer(privateKeyEntry.getCertificateChain());
configured = "keystore \"" + fileName + "\", alias " + params[0][1];
} catch (KeyStoreException | NoSuchAlgorithmException | CertificateException | UnrecoverableEntryException e) {
throw new CertException("Exception opening Keystore " + fileName, e);
}
}
} else {
throw new CertException("Private Key, " + f.getPath() + ", does not exist");
}
X500NameBuilder xnb = new X500NameBuilder();
for(RDN rnd : RDN.parse(',', x509cwi.getIssuerDN())) {
xnb.addRDN(rnd.aoi,rnd.value);
}
issuer = xnb.build();
access.printf(Level.INIT, "LocalCA is configured with %s. The Issuer DN is %s.",
configured, issuer.toString());
}
/* (non-Javadoc)
* @see org.onap.aaf.auth.cm.service.CA#sign(org.bouncycastle.pkcs.PKCS10CertificationRequest)
*/
@Override
public X509andChain sign(Trans trans, CSRMeta csrmeta) throws IOException, CertException {
GregorianCalendar gc = new GregorianCalendar();
Date start = gc.getTime();
gc.add(GregorianCalendar.MONTH, 2);
Date end = gc.getTime();
X509Certificate x509;
TimeTaken tt = trans.start("Create/Sign Cert",Env.SUB);
try {
BigInteger bi;
synchronized(serialish) {
random.nextBytes(serialish);
bi = new BigInteger(serialish);
}
RSAPublicKey rpk = (RSAPublicKey)csrmeta.keypair(trans).getPublic();
X509v3CertificateBuilder xcb = new X509v3CertificateBuilder(
issuer,
bi, // replace with Serialnumber scheme
start,
end,
csrmeta.x500Name(),
SubjectPublicKeyInfoFactory.createSubjectPublicKeyInfo(new RSAKeyParameters(false,rpk.getModulus(),rpk.getPublicExponent()))
// new SubjectPublicKeyInfo(ASN1Sequence.getInstance(caCert.getPublicKey().getEncoded()))
);
List<GeneralName> lsan = new ArrayList<GeneralName>();
for(String s : csrmeta.sans()) {
lsan.add(new GeneralName(GeneralName.dNSName,s));
}
GeneralName[] sans = new GeneralName[lsan.size()];
lsan.toArray(sans);
JcaX509ExtensionUtils extUtils = new JcaX509ExtensionUtils();
xcb.addExtension(Extension.basicConstraints,
false, new BasicConstraints(false))
.addExtension(Extension.keyUsage,
true, new KeyUsage(KeyUsage.digitalSignature
| KeyUsage.keyEncipherment))
.addExtension(Extension.extendedKeyUsage,
true, new ExtendedKeyUsage(ASN_WebUsage))
.addExtension(Extension.authorityKeyIdentifier,
false, extUtils.createAuthorityKeyIdentifier(x509cwi.cert))
.addExtension(Extension.subjectKeyIdentifier,
false, extUtils.createSubjectKeyIdentifier(x509cwi.cert.getPublicKey()))
.addExtension(Extension.subjectAlternativeName,
false, new GeneralNames(sans))
;
x509 = new JcaX509CertificateConverter().getCertificate(
xcb.build(BCFactory.contentSigner(caKey)));
} catch (GeneralSecurityException|OperatorCreationException e) {
throw new CertException(e);
} finally {
tt.done();
}
return new X509ChainWithIssuer(x509cwi,x509);
}
}
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