/*
* $Id: PdfPKCS7.java 4934 2011-08-09 15:58:18Z blowagie $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2011 1T3XT BVBA
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
* 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.text.pdf;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.math.BigInteger;
import java.security.InvalidKeyException;
import java.security.KeyStore;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.PrivateKey;
import java.security.Signature;
import java.security.SignatureException;
import java.security.cert.CRL;
import java.security.cert.CRLException;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.CertificateParsingException;
import java.security.cert.X509CRL;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Collection;
import java.util.Date;
import java.util.Enumeration;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Set;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1OutputStream;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1Set;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DEREnumerated;
import org.bouncycastle.asn1.DERInteger;
import org.bouncycastle.asn1.DERNull;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERObjectIdentifier;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERSet;
import org.bouncycastle.asn1.DERString;
import org.bouncycastle.asn1.DERTaggedObject;
import org.bouncycastle.asn1.DERUTCTime;
import org.bouncycastle.asn1.cms.Attribute;
import org.bouncycastle.asn1.cms.AttributeTable;
import org.bouncycastle.asn1.cms.ContentInfo;
import org.bouncycastle.asn1.ocsp.BasicOCSPResponse;
import org.bouncycastle.asn1.ocsp.OCSPObjectIdentifiers;
import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.asn1.tsp.MessageImprint;
import org.bouncycastle.asn1.x509.X509Extensions;
import org.bouncycastle.jce.X509Principal;
import org.bouncycastle.jce.provider.X509CertParser;
import org.bouncycastle.ocsp.BasicOCSPResp;
import org.bouncycastle.ocsp.CertificateID;
import org.bouncycastle.ocsp.SingleResp;
import org.bouncycastle.tsp.TimeStampToken;
import com.itextpdf.text.ExceptionConverter;
import com.itextpdf.text.error_messages.MessageLocalization;
/**
* This class does all the processing related to signing and verifying a PKCS#7
* signature.
* <p>
* It's based in code found at org.bouncycastle.
*/
public class PdfPKCS7 {
private byte sigAttr[];
private byte digestAttr[];
private int version, signerversion;
private Set<String> digestalgos;
private Collection<Certificate> certs;
private Collection<CRL> crls;
private Collection<Certificate> signCerts;
private X509Certificate signCert;
private byte[] digest;
private MessageDigest messageDigest;
private MessageDigest encContDigest; // Stefan Santesson
private String digestAlgorithm, digestEncryptionAlgorithm;
private Signature sig;
private transient PrivateKey privKey;
private byte RSAdata[];
private boolean verified;
private boolean verifyResult;
private byte externalDigest[];
private byte externalRSAdata[];
private String provider;
private static final String ID_PKCS7_DATA = "1.2.840.113549.1.7.1";
private static final String ID_PKCS7_SIGNED_DATA = "1.2.840.113549.1.7.2";
private static final String ID_RSA = "1.2.840.113549.1.1.1";
private static final String ID_DSA = "1.2.840.10040.4.1";
private static final String ID_CONTENT_TYPE = "1.2.840.113549.1.9.3";
private static final String ID_MESSAGE_DIGEST = "1.2.840.113549.1.9.4";
private static final String ID_SIGNING_TIME = "1.2.840.113549.1.9.5";
private static final String ID_ADBE_REVOCATION = "1.2.840.113583.1.1.8";
/**
* Holds value of property reason.
*/
private String reason;
/**
* Holds value of property location.
*/
private String location;
/**
* Holds value of property signDate.
*/
private Calendar signDate;
/**
* Holds value of property signName.
*/
private String signName;
private TimeStampToken timeStampToken;
private static final HashMap<String, String> digestNames = new HashMap<String, String>();
private static final HashMap<String, String> algorithmNames = new HashMap<String, String>();
private static final HashMap<String, String> allowedDigests = new HashMap<String, String>();
static {
digestNames.put("1.2.840.113549.2.5", "MD5");
digestNames.put("1.2.840.113549.2.2", "MD2");
digestNames.put("1.3.14.3.2.26", "SHA1");
digestNames.put("2.16.840.1.101.3.4.2.4", "SHA224");
digestNames.put("2.16.840.1.101.3.4.2.1", "SHA256");
digestNames.put("2.16.840.1.101.3.4.2.2", "SHA384");
digestNames.put("2.16.840.1.101.3.4.2.3", "SHA512");
digestNames.put("1.3.36.3.2.2", "RIPEMD128");
digestNames.put("1.3.36.3.2.1", "RIPEMD160");
digestNames.put("1.3.36.3.2.3", "RIPEMD256");
digestNames.put("1.2.840.113549.1.1.4", "MD5");
digestNames.put("1.2.840.113549.1.1.2", "MD2");
digestNames.put("1.2.840.113549.1.1.5", "SHA1");
digestNames.put("1.2.840.113549.1.1.14", "SHA224");
digestNames.put("1.2.840.113549.1.1.11", "SHA256");
digestNames.put("1.2.840.113549.1.1.12", "SHA384");
digestNames.put("1.2.840.113549.1.1.13", "SHA512");
digestNames.put("1.2.840.113549.2.5", "MD5");
digestNames.put("1.2.840.113549.2.2", "MD2");
digestNames.put("1.2.840.10040.4.3", "SHA1");
digestNames.put("2.16.840.1.101.3.4.3.1", "SHA224");
digestNames.put("2.16.840.1.101.3.4.3.2", "SHA256");
digestNames.put("2.16.840.1.101.3.4.3.3", "SHA384");
digestNames.put("2.16.840.1.101.3.4.3.4", "SHA512");
digestNames.put("1.3.36.3.3.1.3", "RIPEMD128");
digestNames.put("1.3.36.3.3.1.2", "RIPEMD160");
digestNames.put("1.3.36.3.3.1.4", "RIPEMD256");
algorithmNames.put("1.2.840.113549.1.1.1", "RSA");
algorithmNames.put("1.2.840.10040.4.1", "DSA");
algorithmNames.put("1.2.840.113549.1.1.2", "RSA");
algorithmNames.put("1.2.840.113549.1.1.4", "RSA");
algorithmNames.put("1.2.840.113549.1.1.5", "RSA");
algorithmNames.put("1.2.840.113549.1.1.14", "RSA");
algorithmNames.put("1.2.840.113549.1.1.11", "RSA");
algorithmNames.put("1.2.840.113549.1.1.12", "RSA");
algorithmNames.put("1.2.840.113549.1.1.13", "RSA");
algorithmNames.put("1.2.840.10040.4.3", "DSA");
algorithmNames.put("2.16.840.1.101.3.4.3.1", "DSA");
algorithmNames.put("2.16.840.1.101.3.4.3.2", "DSA");
algorithmNames.put("1.3.36.3.3.1.3", "RSA");
algorithmNames.put("1.3.36.3.3.1.2", "RSA");
algorithmNames.put("1.3.36.3.3.1.4", "RSA");
allowedDigests.put("MD5", "1.2.840.113549.2.5");
allowedDigests.put("MD2", "1.2.840.113549.2.2");
allowedDigests.put("SHA1", "1.3.14.3.2.26");
allowedDigests.put("SHA224", "2.16.840.1.101.3.4.2.4");
allowedDigests.put("SHA256", "2.16.840.1.101.3.4.2.1");
allowedDigests.put("SHA384", "2.16.840.1.101.3.4.2.2");
allowedDigests.put("SHA512", "2.16.840.1.101.3.4.2.3");
allowedDigests.put("MD-5", "1.2.840.113549.2.5");
allowedDigests.put("MD-2", "1.2.840.113549.2.2");
allowedDigests.put("SHA-1", "1.3.14.3.2.26");
allowedDigests.put("SHA-224", "2.16.840.1.101.3.4.2.4");
allowedDigests.put("SHA-256", "2.16.840.1.101.3.4.2.1");
allowedDigests.put("SHA-384", "2.16.840.1.101.3.4.2.2");
allowedDigests.put("SHA-512", "2.16.840.1.101.3.4.2.3");
allowedDigests.put("RIPEMD128", "1.3.36.3.2.2");
allowedDigests.put("RIPEMD-128", "1.3.36.3.2.2");
allowedDigests.put("RIPEMD160", "1.3.36.3.2.1");
allowedDigests.put("RIPEMD-160", "1.3.36.3.2.1");
allowedDigests.put("RIPEMD256", "1.3.36.3.2.3");
allowedDigests.put("RIPEMD-256", "1.3.36.3.2.3");
}
/**
* Gets the digest name for a certain id
* @param oid an id (for instance "1.2.840.113549.2.5")
* @return a digest name (for instance "MD5")
* @since 2.1.6
*/
public static String getDigest(String oid) {
String ret = digestNames.get(oid);
if (ret == null)
return oid;
else
return ret;
}
/**
* Gets the algorithm name for a certain id.
* @param oid an id (for instance "1.2.840.113549.1.1.1")
* @return an algorithm name (for instance "RSA")
* @since 2.1.6
*/
public static String getAlgorithm(String oid) {
String ret = algorithmNames.get(oid);
if (ret == null)
return oid;
else
return ret;
}
/**
* Gets the timestamp token if there is one.
* @return the timestamp token or null
* @since 2.1.6
*/
public TimeStampToken getTimeStampToken() {
return timeStampToken;
}
/**
* Gets the timestamp date
* @return a date
* @since 2.1.6
*/
public Calendar getTimeStampDate() {
if (timeStampToken == null)
return null;
Calendar cal = new GregorianCalendar();
Date date = timeStampToken.getTimeStampInfo().getGenTime();
cal.setTime(date);
return cal;
}
/**
* Verifies a signature using the sub-filter adbe.x509.rsa_sha1.
* @param contentsKey the /Contents key
* @param certsKey the /Cert key
* @param provider the provider or <code>null</code> for the default provider
*/
@SuppressWarnings("unchecked")
public PdfPKCS7(byte[] contentsKey, byte[] certsKey, String provider) {
try {
this.provider = provider;
X509CertParser cr = new X509CertParser();
cr.engineInit(new ByteArrayInputStream(certsKey));
certs = cr.engineReadAll();
signCerts = certs;
signCert = (X509Certificate)certs.iterator().next();
crls = new ArrayList<CRL>();
ASN1InputStream in = new ASN1InputStream(new ByteArrayInputStream(contentsKey));
digest = ((DEROctetString)in.readObject()).getOctets();
if (provider == null)
sig = Signature.getInstance("SHA1withRSA");
else
sig = Signature.getInstance("SHA1withRSA", provider);
sig.initVerify(signCert.getPublicKey());
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
private BasicOCSPResp basicResp;
/**
* Gets the OCSP basic response if there is one.
* @return the OCSP basic response or null
* @since 2.1.6
*/
public BasicOCSPResp getOcsp() {
return basicResp;
}
private void findCRL(ASN1Sequence seq) throws IOException, CertificateException, CRLException {
try {
crls = new ArrayList<CRL>();
for (int k = 0; k < seq.size(); ++k) {
ByteArrayInputStream ar = new ByteArrayInputStream(seq.getObjectAt(k).getDERObject().getDEREncoded());
CertificateFactory cf = CertificateFactory.getInstance("X.509");
X509CRL crl = (X509CRL)cf.generateCRL(ar);
crls.add(crl);
}
}
catch (Exception ex) {
// ignore
}
}
private void findOcsp(ASN1Sequence seq) throws IOException {
basicResp = null;
boolean ret = false;
while (true) {
if (seq.getObjectAt(0) instanceof DERObjectIdentifier
&& ((DERObjectIdentifier)seq.getObjectAt(0)).getId().equals(OCSPObjectIdentifiers.id_pkix_ocsp_basic.getId())) {
break;
}
ret = true;
for (int k = 0; k < seq.size(); ++k) {
if (seq.getObjectAt(k) instanceof ASN1Sequence) {
seq = (ASN1Sequence)seq.getObjectAt(0);
ret = false;
break;
}
if (seq.getObjectAt(k) instanceof ASN1TaggedObject) {
ASN1TaggedObject tag = (ASN1TaggedObject)seq.getObjectAt(k);
if (tag.getObject() instanceof ASN1Sequence) {
seq = (ASN1Sequence)tag.getObject();
ret = false;
break;
}
else
return;
}
}
if (ret)
return;
}
DEROctetString os = (DEROctetString)seq.getObjectAt(1);
ASN1InputStream inp = new ASN1InputStream(os.getOctets());
BasicOCSPResponse resp = BasicOCSPResponse.getInstance(inp.readObject());
basicResp = new BasicOCSPResp(resp);
}
/**
* Verifies a signature using the sub-filter adbe.pkcs7.detached or
* adbe.pkcs7.sha1.
* @param contentsKey the /Contents key
* @param provider the provider or <code>null</code> for the default provider
*/
@SuppressWarnings("unchecked")
public PdfPKCS7(byte[] contentsKey, String provider) {
try {
this.provider = provider;
ASN1InputStream din = new ASN1InputStream(new ByteArrayInputStream(contentsKey));
//
// Basic checks to make sure it's a PKCS#7 SignedData Object
//
DERObject pkcs;
try {
pkcs = din.readObject();
}
catch (IOException e) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("can.t.decode.pkcs7signeddata.object"));
}
if (!(pkcs instanceof ASN1Sequence)) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("not.a.valid.pkcs.7.object.not.a.sequence"));
}
ASN1Sequence signedData = (ASN1Sequence)pkcs;
DERObjectIdentifier objId = (DERObjectIdentifier)signedData.getObjectAt(0);
if (!objId.getId().equals(ID_PKCS7_SIGNED_DATA))
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("not.a.valid.pkcs.7.object.not.signed.data"));
ASN1Sequence content = (ASN1Sequence)((DERTaggedObject)signedData.getObjectAt(1)).getObject();
// the positions that we care are:
// 0 - version
// 1 - digestAlgorithms
// 2 - possible ID_PKCS7_DATA
// (the certificates and crls are taken out by other means)
// last - signerInfos
// the version
version = ((DERInteger)content.getObjectAt(0)).getValue().intValue();
// the digestAlgorithms
digestalgos = new HashSet<String>();
Enumeration<ASN1Sequence> e = ((ASN1Set)content.getObjectAt(1)).getObjects();
while (e.hasMoreElements())
{
ASN1Sequence s = e.nextElement();
DERObjectIdentifier o = (DERObjectIdentifier)s.getObjectAt(0);
digestalgos.add(o.getId());
}
// the certificates
X509CertParser cr = new X509CertParser();
cr.engineInit(new ByteArrayInputStream(contentsKey));
certs = cr.engineReadAll();
// the possible ID_PKCS7_DATA
ASN1Sequence rsaData = (ASN1Sequence)content.getObjectAt(2);
if (rsaData.size() > 1) {
DEROctetString rsaDataContent = (DEROctetString)((DERTaggedObject)rsaData.getObjectAt(1)).getObject();
RSAdata = rsaDataContent.getOctets();
}
// the signerInfos
int next = 3;
while (content.getObjectAt(next) instanceof DERTaggedObject)
++next;
ASN1Set signerInfos = (ASN1Set)content.getObjectAt(next);
if (signerInfos.size() != 1)
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("this.pkcs.7.object.has.multiple.signerinfos.only.one.is.supported.at.this.time"));
ASN1Sequence signerInfo = (ASN1Sequence)signerInfos.getObjectAt(0);
// the positions that we care are
// 0 - version
// 1 - the signing certificate issuer and serial number
// 2 - the digest algorithm
// 3 or 4 - digestEncryptionAlgorithm
// 4 or 5 - encryptedDigest
signerversion = ((DERInteger)signerInfo.getObjectAt(0)).getValue().intValue();
// Get the signing certificate
ASN1Sequence issuerAndSerialNumber = (ASN1Sequence)signerInfo.getObjectAt(1);
X509Principal issuer = new X509Principal(issuerAndSerialNumber.getObjectAt(0).getDERObject().getEncoded());
BigInteger serialNumber = ((DERInteger)issuerAndSerialNumber.getObjectAt(1)).getValue();
for (Object element : certs) {
X509Certificate cert = (X509Certificate)element;
if (issuer.equals(cert.getIssuerDN()) && serialNumber.equals(cert.getSerialNumber())) {
signCert = cert;
break;
}
}
if (signCert == null) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("can.t.find.signing.certificate.with.serial.1",
issuer.getName() + " / " + serialNumber.toString(16)));
}
signCertificateChain();
digestAlgorithm = ((DERObjectIdentifier)((ASN1Sequence)signerInfo.getObjectAt(2)).getObjectAt(0)).getId();
next = 3;
if (signerInfo.getObjectAt(next) instanceof ASN1TaggedObject) {
ASN1TaggedObject tagsig = (ASN1TaggedObject)signerInfo.getObjectAt(next);
ASN1Set sseq = ASN1Set.getInstance(tagsig, false);
sigAttr = sseq.getEncoded(ASN1Encodable.DER);
for (int k = 0; k < sseq.size(); ++k) {
ASN1Sequence seq2 = (ASN1Sequence)sseq.getObjectAt(k);
if (((DERObjectIdentifier)seq2.getObjectAt(0)).getId().equals(ID_MESSAGE_DIGEST)) {
ASN1Set set = (ASN1Set)seq2.getObjectAt(1);
digestAttr = ((DEROctetString)set.getObjectAt(0)).getOctets();
}
else if (((DERObjectIdentifier)seq2.getObjectAt(0)).getId().equals(ID_ADBE_REVOCATION)) {
ASN1Set setout = (ASN1Set)seq2.getObjectAt(1);
ASN1Sequence seqout = (ASN1Sequence)setout.getObjectAt(0);
for (int j = 0; j < seqout.size(); ++j) {
ASN1TaggedObject tg = (ASN1TaggedObject)seqout.getObjectAt(j);
if (tg.getTagNo() == 0) {
ASN1Sequence seqin = (ASN1Sequence)tg.getObject();
findCRL(seqin);
}
if (tg.getTagNo() == 1) {
ASN1Sequence seqin = (ASN1Sequence)tg.getObject();
findOcsp(seqin);
}
}
}
}
if (digestAttr == null)
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("authenticated.attribute.is.missing.the.digest"));
++next;
}
digestEncryptionAlgorithm = ((DERObjectIdentifier)((ASN1Sequence)signerInfo.getObjectAt(next++)).getObjectAt(0)).getId();
digest = ((DEROctetString)signerInfo.getObjectAt(next++)).getOctets();
if (next < signerInfo.size() && signerInfo.getObjectAt(next) instanceof DERTaggedObject) {
DERTaggedObject taggedObject = (DERTaggedObject) signerInfo.getObjectAt(next);
ASN1Set unat = ASN1Set.getInstance(taggedObject, false);
AttributeTable attble = new AttributeTable(unat);
Attribute ts = attble.get(PKCSObjectIdentifiers.id_aa_signatureTimeStampToken);
if (ts != null && ts.getAttrValues().size() > 0) {
ASN1Set attributeValues = ts.getAttrValues();
ASN1Sequence tokenSequence = ASN1Sequence.getInstance(attributeValues.getObjectAt(0));
ContentInfo contentInfo = new ContentInfo(tokenSequence);
this.timeStampToken = new TimeStampToken(contentInfo);
}
}
if (RSAdata != null || digestAttr != null) {
if (provider == null || provider.startsWith("SunPKCS11")) {
messageDigest = MessageDigest.getInstance(getHashAlgorithm());
encContDigest = MessageDigest.getInstance(getHashAlgorithm()); // Stefan Santesson
}
else {
messageDigest = MessageDigest.getInstance(getHashAlgorithm(), provider);
encContDigest = MessageDigest.getInstance(getHashAlgorithm(), provider); // Stefan Santesson
}
}
if (provider == null)
sig = Signature.getInstance(getDigestAlgorithm());
else
sig = Signature.getInstance(getDigestAlgorithm(), provider);
sig.initVerify(signCert.getPublicKey());
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
/**
* Generates a signature.
* @param privKey the private key
* @param certChain the certificate chain
* @param crlList the certificate revocation list
* @param hashAlgorithm the hash algorithm
* @param provider the provider or <code>null</code> for the default provider
* @param hasRSAdata <CODE>true</CODE> if the sub-filter is adbe.pkcs7.sha1
* @throws InvalidKeyException on error
* @throws NoSuchProviderException on error
* @throws NoSuchAlgorithmException on error
*/
public PdfPKCS7(PrivateKey privKey, Certificate[] certChain, CRL[] crlList,
String hashAlgorithm, String provider, boolean hasRSAdata)
throws InvalidKeyException, NoSuchProviderException,
NoSuchAlgorithmException
{
this.privKey = privKey;
this.provider = provider;
digestAlgorithm = allowedDigests.get(hashAlgorithm.toUpperCase());
if (digestAlgorithm == null)
throw new NoSuchAlgorithmException(MessageLocalization.getComposedMessage("unknown.hash.algorithm.1", hashAlgorithm));
version = signerversion = 1;
certs = new ArrayList<Certificate>();
crls = new ArrayList<CRL>();
digestalgos = new HashSet<String>();
digestalgos.add(digestAlgorithm);
//
// Copy in the certificates and crls used to sign the private key.
//
signCert = (X509Certificate)certChain[0];
for (Certificate element : certChain) {
certs.add(element);
}
if (crlList != null) {
for (CRL element : crlList) {
crls.add(element);
}
}
if (privKey != null) {
//
// Now we have private key, find out what the digestEncryptionAlgorithm is.
//
digestEncryptionAlgorithm = privKey.getAlgorithm();
if (digestEncryptionAlgorithm.equals("RSA")) {
digestEncryptionAlgorithm = ID_RSA;
}
else if (digestEncryptionAlgorithm.equals("DSA")) {
digestEncryptionAlgorithm = ID_DSA;
}
else {
throw new NoSuchAlgorithmException(MessageLocalization.getComposedMessage("unknown.key.algorithm.1", digestEncryptionAlgorithm));
}
}
if (hasRSAdata) {
RSAdata = new byte[0];
if (provider == null || provider.startsWith("SunPKCS11"))
messageDigest = MessageDigest.getInstance(getHashAlgorithm());
else
messageDigest = MessageDigest.getInstance(getHashAlgorithm(), provider);
}
if (privKey != null) {
if (provider == null)
sig = Signature.getInstance(getDigestAlgorithm());
else
sig = Signature.getInstance(getDigestAlgorithm(), provider);
sig.initSign(privKey);
}
}
/**
* Update the digest with the specified bytes. This method is used both for signing and verifying
* @param buf the data buffer
* @param off the offset in the data buffer
* @param len the data length
* @throws SignatureException on error
*/
public void update(byte[] buf, int off, int len) throws SignatureException {
if (RSAdata != null || digestAttr != null)
messageDigest.update(buf, off, len);
else
sig.update(buf, off, len);
}
/**
* Verify the digest.
* @throws SignatureException on error
* @return <CODE>true</CODE> if the signature checks out, <CODE>false</CODE> otherwise
*/
public boolean verify() throws SignatureException {
if (verified)
return verifyResult;
if (sigAttr != null) {
final byte [] msgDigestBytes = messageDigest.digest();
boolean verifyRSAdata = true;
sig.update(sigAttr);
// Stefan Santesson fixed a bug, keeping the code backward compatible
boolean encContDigestCompare = false;
if (RSAdata != null) {
verifyRSAdata = Arrays.equals(msgDigestBytes, RSAdata);
encContDigest.update(RSAdata);
encContDigestCompare = Arrays.equals(encContDigest.digest(), digestAttr);
}
boolean absentEncContDigestCompare = Arrays.equals(msgDigestBytes, digestAttr);
boolean concludingDigestCompare = absentEncContDigestCompare || encContDigestCompare;
boolean sigVerify = sig.verify(digest);
verifyResult = concludingDigestCompare && sigVerify && verifyRSAdata;
}
else {
if (RSAdata != null)
sig.update(messageDigest.digest());
verifyResult = sig.verify(digest);
}
verified = true;
return verifyResult;
}
/**
* Checks if the timestamp refers to this document.
* @throws java.security.NoSuchAlgorithmException on error
* @return true if it checks false otherwise
* @since 2.1.6
*/
public boolean verifyTimestampImprint() throws NoSuchAlgorithmException {
if (timeStampToken == null)
return false;
MessageImprint imprint = timeStampToken.getTimeStampInfo().toTSTInfo().getMessageImprint();
byte[] md = MessageDigest.getInstance("SHA-1").digest(digest);
byte[] imphashed = imprint.getHashedMessage();
boolean res = Arrays.equals(md, imphashed);
return res;
}
/**
* Get all the X.509 certificates associated with this PKCS#7 object in no particular order.
* Other certificates, from OCSP for example, will also be included.
* @return the X.509 certificates associated with this PKCS#7 object
*/
public Certificate[] getCertificates() {
return certs.toArray(new X509Certificate[certs.size()]);
}
/**
* Get the X.509 sign certificate chain associated with this PKCS#7 object.
* Only the certificates used for the main signature will be returned, with
* the signing certificate first.
* @return the X.509 certificates associated with this PKCS#7 object
* @since 2.1.6
*/
public Certificate[] getSignCertificateChain() {
return signCerts.toArray(new X509Certificate[signCerts.size()]);
}
private void signCertificateChain() {
ArrayList<Certificate> cc = new ArrayList<Certificate>();
cc.add(signCert);
ArrayList<Certificate> oc = new ArrayList<Certificate>(certs);
for (int k = 0; k < oc.size(); ++k) {
if (signCert.equals(oc.get(k))) {
oc.remove(k);
--k;
continue;
}
}
boolean found = true;
while (found) {
X509Certificate v = (X509Certificate)cc.get(cc.size() - 1);
found = false;
for (int k = 0; k < oc.size(); ++k) {
try {
if (provider == null)
v.verify(((X509Certificate)oc.get(k)).getPublicKey());
else
v.verify(((X509Certificate)oc.get(k)).getPublicKey(), provider);
found = true;
cc.add(oc.get(k));
oc.remove(k);
break;
}
catch (Exception e) {
}
}
}
signCerts = cc;
}
/**
* Get the X.509 certificate revocation lists associated with this PKCS#7 object
* @return the X.509 certificate revocation lists associated with this PKCS#7 object
*/
public Collection<CRL> getCRLs() {
return crls;
}
/**
* Get the X.509 certificate actually used to sign the digest.
* @return the X.509 certificate actually used to sign the digest
*/
public X509Certificate getSigningCertificate() {
return signCert;
}
/**
* Get the version of the PKCS#7 object. Always 1
* @return the version of the PKCS#7 object. Always 1
*/
public int getVersion() {
return version;
}
/**
* Get the version of the PKCS#7 "SignerInfo" object. Always 1
* @return the version of the PKCS#7 "SignerInfo" object. Always 1
*/
public int getSigningInfoVersion() {
return signerversion;
}
/**
* Getter for the digest encryption algorithm
*/
public String getDigestEncryptionAlgorithmOid() {
return digestEncryptionAlgorithm;
}
/**
* Getter for the digest algorithm
*/
public String getDigestAlgorithmOid() {
return digestAlgorithm;
}
/**
* Get the algorithm used to calculate the message digest
* @return the algorithm used to calculate the message digest
*/
public String getDigestAlgorithm() {
String dea = getAlgorithm(digestEncryptionAlgorithm);
if (dea == null)
dea = digestEncryptionAlgorithm;
return getHashAlgorithm() + "with" + dea;
}
/**
* Returns the algorithm.
* @return the digest algorithm
*/
public String getHashAlgorithm() {
return getDigest(digestAlgorithm);
}
/**
* Loads the default root certificates at <java.home>/lib/security/cacerts
* with the default provider.
* @return a <CODE>KeyStore</CODE>
*/
public static KeyStore loadCacertsKeyStore() {
return loadCacertsKeyStore(null);
}
/**
* Loads the default root certificates at <java.home>/lib/security/cacerts.
* @param provider the provider or <code>null</code> for the default provider
* @return a <CODE>KeyStore</CODE>
*/
public static KeyStore loadCacertsKeyStore(String provider) {
File file = new File(System.getProperty("java.home"), "lib");
file = new File(file, "security");
file = new File(file, "cacerts");
FileInputStream fin = null;
try {
fin = new FileInputStream(file);
KeyStore k;
if (provider == null)
k = KeyStore.getInstance("JKS");
else
k = KeyStore.getInstance("JKS", provider);
k.load(fin, null);
return k;
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
finally {
try{if (fin != null) {fin.close();}}catch(Exception ex){}
}
}
/**
* Verifies a single certificate.
* @param cert the certificate to verify
* @param crls the certificate revocation list or <CODE>null</CODE>
* @param calendar the date or <CODE>null</CODE> for the current date
* @return a <CODE>String</CODE> with the error description or <CODE>null</CODE>
* if no error
*/
public static String verifyCertificate(X509Certificate cert, Collection<CRL> crls, Calendar calendar) {
if (calendar == null)
calendar = new GregorianCalendar();
if (cert.hasUnsupportedCriticalExtension())
return "Has unsupported critical extension";
try {
cert.checkValidity(calendar.getTime());
}
catch (Exception e) {
return e.getMessage();
}
if (crls != null) {
for (CRL crl : crls) {
if (crl.isRevoked(cert))
return "Certificate revoked";
}
}
return null;
}
/**
* Verifies a certificate chain against a KeyStore.
* @param certs the certificate chain
* @param keystore the <CODE>KeyStore</CODE>
* @param crls the certificate revocation list or <CODE>null</CODE>
* @param calendar the date or <CODE>null</CODE> for the current date
* @return <CODE>null</CODE> if the certificate chain could be validated or a
* <CODE>Object[]{cert,error}</CODE> where <CODE>cert</CODE> is the
* failed certificate and <CODE>error</CODE> is the error message
*/
public static Object[] verifyCertificates(Certificate certs[], KeyStore keystore, Collection<CRL> crls, Calendar calendar) {
if (calendar == null)
calendar = new GregorianCalendar();
for (int k = 0; k < certs.length; ++k) {
X509Certificate cert = (X509Certificate)certs[k];
String err = verifyCertificate(cert, crls, calendar);
if (err != null)
return new Object[]{cert, err};
try {
for (Enumeration<String> aliases = keystore.aliases(); aliases.hasMoreElements();) {
try {
String alias = aliases.nextElement();
if (!keystore.isCertificateEntry(alias))
continue;
X509Certificate certStoreX509 = (X509Certificate)keystore.getCertificate(alias);
if (verifyCertificate(certStoreX509, crls, calendar) != null)
continue;
try {
cert.verify(certStoreX509.getPublicKey());
return null;
}
catch (Exception e) {
continue;
}
}
catch (Exception ex) {
}
}
}
catch (Exception e) {
}
int j;
for (j = 0; j < certs.length; ++j) {
if (j == k)
continue;
X509Certificate certNext = (X509Certificate)certs[j];
try {
cert.verify(certNext.getPublicKey());
break;
}
catch (Exception e) {
}
}
if (j == certs.length)
return new Object[]{cert, "Cannot be verified against the KeyStore or the certificate chain"};
}
return new Object[]{null, "Invalid state. Possible circular certificate chain"};
}
/**
* Verifies an OCSP response against a KeyStore.
* @param ocsp the OCSP response
* @param keystore the <CODE>KeyStore</CODE>
* @param provider the provider or <CODE>null</CODE> to use the BouncyCastle provider
* @return <CODE>true</CODE> is a certificate was found
* @since 2.1.6
*/
public static boolean verifyOcspCertificates(BasicOCSPResp ocsp, KeyStore keystore, String provider) {
if (provider == null)
provider = "BC";
try {
for (Enumeration<String> aliases = keystore.aliases(); aliases.hasMoreElements();) {
try {
String alias = aliases.nextElement();
if (!keystore.isCertificateEntry(alias))
continue;
X509Certificate certStoreX509 = (X509Certificate)keystore.getCertificate(alias);
if (ocsp.verify(certStoreX509.getPublicKey(), provider))
return true;
}
catch (Exception ex) {
}
}
}
catch (Exception e) {
}
return false;
}
/**
* Verifies a timestamp against a KeyStore.
* @param ts the timestamp
* @param keystore the <CODE>KeyStore</CODE>
* @param provider the provider or <CODE>null</CODE> to use the BouncyCastle provider
* @return <CODE>true</CODE> is a certificate was found
* @since 2.1.6
*/
public static boolean verifyTimestampCertificates(TimeStampToken ts, KeyStore keystore, String provider) {
if (provider == null)
provider = "BC";
try {
for (Enumeration<String> aliases = keystore.aliases(); aliases.hasMoreElements();) {
try {
String alias = aliases.nextElement();
if (!keystore.isCertificateEntry(alias))
continue;
X509Certificate certStoreX509 = (X509Certificate)keystore.getCertificate(alias);
ts.validate(certStoreX509, provider);
return true;
}
catch (Exception ex) {
}
}
}
catch (Exception e) {
}
return false;
}
/**
* Retrieves the OCSP URL from the given certificate.
* @param certificate the certificate
* @return the URL or null
* @throws CertificateParsingException on error
* @since 2.1.6
*/
public static String getOCSPURL(X509Certificate certificate) throws CertificateParsingException {
try {
DERObject obj = getExtensionValue(certificate, X509Extensions.AuthorityInfoAccess.getId());
if (obj == null) {
return null;
}
ASN1Sequence AccessDescriptions = (ASN1Sequence) obj;
for (int i = 0; i < AccessDescriptions.size(); i++) {
ASN1Sequence AccessDescription = (ASN1Sequence) AccessDescriptions.getObjectAt(i);
if ( AccessDescription.size() != 2 ) {
continue;
} else {
if (AccessDescription.getObjectAt(0) instanceof DERObjectIdentifier && ((DERObjectIdentifier)AccessDescription.getObjectAt(0)).getId().equals("1.3.6.1.5.5.7.48.1")) {
String AccessLocation = getStringFromGeneralName((DERObject)AccessDescription.getObjectAt(1));
if ( AccessLocation == null ) {
return "" ;
} else {
return AccessLocation ;
}
}
}
}
} catch (Exception e) {
}
return null;
}
/**
* Checks if OCSP revocation refers to the document signing certificate.
* @return true if it checks false otherwise
* @since 2.1.6
*/
public boolean isRevocationValid() {
if (basicResp == null)
return false;
if (signCerts.size() < 2)
return false;
try {
X509Certificate[] cs = (X509Certificate[])getSignCertificateChain();
SingleResp sr = basicResp.getResponses()[0];
CertificateID cid = sr.getCertID();
X509Certificate sigcer = getSigningCertificate();
X509Certificate isscer = cs[1];
CertificateID tis = new CertificateID(CertificateID.HASH_SHA1, isscer, sigcer.getSerialNumber());
return tis.equals(cid);
}
catch (Exception ex) {
}
return false;
}
private static DERObject getExtensionValue(X509Certificate cert, String oid) throws IOException {
byte[] bytes = cert.getExtensionValue(oid);
if (bytes == null) {
return null;
}
ASN1InputStream aIn = new ASN1InputStream(new ByteArrayInputStream(bytes));
ASN1OctetString octs = (ASN1OctetString) aIn.readObject();
aIn = new ASN1InputStream(new ByteArrayInputStream(octs.getOctets()));
return aIn.readObject();
}
private static String getStringFromGeneralName(DERObject names) throws IOException {
DERTaggedObject taggedObject = (DERTaggedObject) names ;
return new String(ASN1OctetString.getInstance(taggedObject, false).getOctets(), "ISO-8859-1");
}
/**
* Get the "issuer" from the TBSCertificate bytes that are passed in
* @param enc a TBSCertificate in a byte array
* @return a DERObject
*/
private static DERObject getIssuer(byte[] enc) {
try {
ASN1InputStream in = new ASN1InputStream(new ByteArrayInputStream(enc));
ASN1Sequence seq = (ASN1Sequence)in.readObject();
return (DERObject)seq.getObjectAt(seq.getObjectAt(0) instanceof DERTaggedObject ? 3 : 2);
}
catch (IOException e) {
throw new ExceptionConverter(e);
}
}
/**
* Get the "subject" from the TBSCertificate bytes that are passed in
* @param enc A TBSCertificate in a byte array
* @return a DERObject
*/
private static DERObject getSubject(byte[] enc) {
try {
ASN1InputStream in = new ASN1InputStream(new ByteArrayInputStream(enc));
ASN1Sequence seq = (ASN1Sequence)in.readObject();
return (DERObject)seq.getObjectAt(seq.getObjectAt(0) instanceof DERTaggedObject ? 5 : 4);
}
catch (IOException e) {
throw new ExceptionConverter(e);
}
}
/**
* Get the issuer fields from an X509 Certificate
* @param cert an X509Certificate
* @return an X509Name
*/
public static X509Name getIssuerFields(X509Certificate cert) {
try {
return new X509Name((ASN1Sequence)getIssuer(cert.getTBSCertificate()));
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
/**
* Get the subject fields from an X509 Certificate
* @param cert an X509Certificate
* @return an X509Name
*/
public static X509Name getSubjectFields(X509Certificate cert) {
try {
return new X509Name((ASN1Sequence)getSubject(cert.getTBSCertificate()));
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
/**
* Gets the bytes for the PKCS#1 object.
* @return a byte array
*/
public byte[] getEncodedPKCS1() {
try {
if (externalDigest != null)
digest = externalDigest;
else
digest = sig.sign();
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
ASN1OutputStream dout = new ASN1OutputStream(bOut);
dout.writeObject(new DEROctetString(digest));
dout.close();
return bOut.toByteArray();
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
/**
* Sets the digest/signature to an external calculated value.
* @param digest the digest. This is the actual signature
* @param RSAdata the extra data that goes into the data tag in PKCS#7
* @param digestEncryptionAlgorithm the encryption algorithm. It may must be <CODE>null</CODE> if the <CODE>digest</CODE>
* is also <CODE>null</CODE>. If the <CODE>digest</CODE> is not <CODE>null</CODE>
* then it may be "RSA" or "DSA"
*/
public void setExternalDigest(byte digest[], byte RSAdata[], String digestEncryptionAlgorithm) {
externalDigest = digest;
externalRSAdata = RSAdata;
if (digestEncryptionAlgorithm != null) {
if (digestEncryptionAlgorithm.equals("RSA")) {
this.digestEncryptionAlgorithm = ID_RSA;
}
else if (digestEncryptionAlgorithm.equals("DSA")) {
this.digestEncryptionAlgorithm = ID_DSA;
}
else
throw new ExceptionConverter(new NoSuchAlgorithmException(MessageLocalization.getComposedMessage("unknown.key.algorithm.1", digestEncryptionAlgorithm)));
}
}
/**
* Gets the bytes for the PKCS7SignedData object.
* @return the bytes for the PKCS7SignedData object
*/
public byte[] getEncodedPKCS7() {
return getEncodedPKCS7(null, null, null, null);
}
/**
* Gets the bytes for the PKCS7SignedData object. Optionally the authenticatedAttributes
* in the signerInfo can also be set. If either of the parameters is <CODE>null</CODE>, none will be used.
* @param secondDigest the digest in the authenticatedAttributes
* @param signingTime the signing time in the authenticatedAttributes
* @return the bytes for the PKCS7SignedData object
*/
public byte[] getEncodedPKCS7(byte secondDigest[], Calendar signingTime) {
return getEncodedPKCS7(secondDigest, signingTime, null, null);
}
/**
* Gets the bytes for the PKCS7SignedData object. Optionally the authenticatedAttributes
* in the signerInfo can also be set, OR a time-stamp-authority client
* may be provided.
* @param secondDigest the digest in the authenticatedAttributes
* @param signingTime the signing time in the authenticatedAttributes
* @param tsaClient TSAClient - null or an optional time stamp authority client
* @return byte[] the bytes for the PKCS7SignedData object
* @since 2.1.6
*/
public byte[] getEncodedPKCS7(byte secondDigest[], Calendar signingTime, TSAClient tsaClient, byte[] ocsp) {
try {
if (externalDigest != null) {
digest = externalDigest;
if (RSAdata != null)
RSAdata = externalRSAdata;
}
else if (externalRSAdata != null && RSAdata != null) {
RSAdata = externalRSAdata;
sig.update(RSAdata);
digest = sig.sign();
}
else {
if (RSAdata != null) {
RSAdata = messageDigest.digest();
sig.update(RSAdata);
}
digest = sig.sign();
}
// Create the set of Hash algorithms
ASN1EncodableVector digestAlgorithms = new ASN1EncodableVector();
for (Object element : digestalgos) {
ASN1EncodableVector algos = new ASN1EncodableVector();
algos.add(new DERObjectIdentifier((String)element));
algos.add(DERNull.INSTANCE);
digestAlgorithms.add(new DERSequence(algos));
}
// Create the contentInfo.
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(new DERObjectIdentifier(ID_PKCS7_DATA));
if (RSAdata != null)
v.add(new DERTaggedObject(0, new DEROctetString(RSAdata)));
DERSequence contentinfo = new DERSequence(v);
// Get all the certificates
//
v = new ASN1EncodableVector();
for (Object element : certs) {
ASN1InputStream tempstream = new ASN1InputStream(new ByteArrayInputStream(((X509Certificate)element).getEncoded()));
v.add(tempstream.readObject());
}
DERSet dercertificates = new DERSet(v);
// Create signerinfo structure.
//
ASN1EncodableVector signerinfo = new ASN1EncodableVector();
// Add the signerInfo version
//
signerinfo.add(new DERInteger(signerversion));
v = new ASN1EncodableVector();
v.add(getIssuer(signCert.getTBSCertificate()));
v.add(new DERInteger(signCert.getSerialNumber()));
signerinfo.add(new DERSequence(v));
// Add the digestAlgorithm
v = new ASN1EncodableVector();
v.add(new DERObjectIdentifier(digestAlgorithm));
v.add(new DERNull());
signerinfo.add(new DERSequence(v));
// add the authenticated attribute if present
if (secondDigest != null && signingTime != null) {
signerinfo.add(new DERTaggedObject(false, 0, getAuthenticatedAttributeSet(secondDigest, signingTime, ocsp)));
}
// Add the digestEncryptionAlgorithm
v = new ASN1EncodableVector();
v.add(new DERObjectIdentifier(digestEncryptionAlgorithm));
v.add(new DERNull());
signerinfo.add(new DERSequence(v));
// Add the digest
signerinfo.add(new DEROctetString(digest));
// When requested, go get and add the timestamp. May throw an exception.
// Added by Martin Brunecky, 07/12/2007 folowing Aiken Sam, 2006-11-15
// Sam found Adobe expects time-stamped SHA1-1 of the encrypted digest
if (tsaClient != null) {
byte[] tsImprint = MessageDigest.getInstance("SHA-1").digest(digest);
byte[] tsToken = tsaClient.getTimeStampToken(this, tsImprint);
if (tsToken != null) {
ASN1EncodableVector unauthAttributes = buildUnauthenticatedAttributes(tsToken);
if (unauthAttributes != null) {
signerinfo.add(new DERTaggedObject(false, 1, new DERSet(unauthAttributes)));
}
}
}
// Finally build the body out of all the components above
ASN1EncodableVector body = new ASN1EncodableVector();
body.add(new DERInteger(version));
body.add(new DERSet(digestAlgorithms));
body.add(contentinfo);
body.add(new DERTaggedObject(false, 0, dercertificates));
// Only allow one signerInfo
body.add(new DERSet(new DERSequence(signerinfo)));
// Now we have the body, wrap it in it's PKCS7Signed shell
// and return it
//
ASN1EncodableVector whole = new ASN1EncodableVector();
whole.add(new DERObjectIdentifier(ID_PKCS7_SIGNED_DATA));
whole.add(new DERTaggedObject(0, new DERSequence(body)));
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
ASN1OutputStream dout = new ASN1OutputStream(bOut);
dout.writeObject(new DERSequence(whole));
dout.close();
return bOut.toByteArray();
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
/**
* Added by Aiken Sam, 2006-11-15, modifed by Martin Brunecky 07/12/2007
* to start with the timeStampToken (signedData 1.2.840.113549.1.7.2).
* Token is the TSA response without response status, which is usually
* handled by the (vendor supplied) TSA request/response interface).
* @param timeStampToken byte[] - time stamp token, DER encoded signedData
* @return ASN1EncodableVector
* @throws IOException
*/
private ASN1EncodableVector buildUnauthenticatedAttributes(byte[] timeStampToken) throws IOException {
if (timeStampToken == null)
return null;
// @todo: move this together with the rest of the defintions
String ID_TIME_STAMP_TOKEN = "1.2.840.113549.1.9.16.2.14"; // RFC 3161 id-aa-timeStampToken
ASN1InputStream tempstream = new ASN1InputStream(new ByteArrayInputStream(timeStampToken));
ASN1EncodableVector unauthAttributes = new ASN1EncodableVector();
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(new DERObjectIdentifier(ID_TIME_STAMP_TOKEN)); // id-aa-timeStampToken
ASN1Sequence seq = (ASN1Sequence) tempstream.readObject();
v.add(new DERSet(seq));
unauthAttributes.add(new DERSequence(v));
return unauthAttributes;
}
/**
* When using authenticatedAttributes the authentication process is different.
* The document digest is generated and put inside the attribute. The signing is done over the DER encoded
* authenticatedAttributes. This method provides that encoding and the parameters must be
* exactly the same as in {@link #getEncodedPKCS7(byte[],Calendar)}.
* <p>
* A simple example:
* <p>
* <pre>
* Calendar cal = Calendar.getInstance();
* PdfPKCS7 pk7 = new PdfPKCS7(key, chain, null, "SHA1", null, false);
* MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
* byte buf[] = new byte[8192];
* int n;
* InputStream inp = sap.getRangeStream();
* while ((n = inp.read(buf)) > 0) {
* messageDigest.update(buf, 0, n);
* }
* byte hash[] = messageDigest.digest();
* byte sh[] = pk7.getAuthenticatedAttributeBytes(hash, cal);
* pk7.update(sh, 0, sh.length);
* byte sg[] = pk7.getEncodedPKCS7(hash, cal);
* </pre>
* @param secondDigest the content digest
* @param signingTime the signing time
* @return the byte array representation of the authenticatedAttributes ready to be signed
*/
public byte[] getAuthenticatedAttributeBytes(byte secondDigest[], Calendar signingTime, byte[] ocsp) {
try {
return getAuthenticatedAttributeSet(secondDigest, signingTime, ocsp).getEncoded(ASN1Encodable.DER);
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
private DERSet getAuthenticatedAttributeSet(byte secondDigest[], Calendar signingTime, byte[] ocsp) {
try {
ASN1EncodableVector attribute = new ASN1EncodableVector();
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(new DERObjectIdentifier(ID_CONTENT_TYPE));
v.add(new DERSet(new DERObjectIdentifier(ID_PKCS7_DATA)));
attribute.add(new DERSequence(v));
v = new ASN1EncodableVector();
v.add(new DERObjectIdentifier(ID_SIGNING_TIME));
v.add(new DERSet(new DERUTCTime(signingTime.getTime())));
attribute.add(new DERSequence(v));
v = new ASN1EncodableVector();
v.add(new DERObjectIdentifier(ID_MESSAGE_DIGEST));
v.add(new DERSet(new DEROctetString(secondDigest)));
attribute.add(new DERSequence(v));
if (ocsp != null || !crls.isEmpty()) {
v = new ASN1EncodableVector();
v.add(new DERObjectIdentifier(ID_ADBE_REVOCATION));
ASN1EncodableVector revocationV = new ASN1EncodableVector();
if (!crls.isEmpty()) {
ASN1EncodableVector v2 = new ASN1EncodableVector();
for (Object element : crls) {
ASN1InputStream t = new ASN1InputStream(new ByteArrayInputStream(((X509CRL)element).getEncoded()));
v2.add(t.readObject());
}
revocationV.add(new DERTaggedObject(true, 0, new DERSequence(v2)));
}
if (ocsp != null) {
DEROctetString doctet = new DEROctetString(ocsp);
ASN1EncodableVector vo1 = new ASN1EncodableVector();
ASN1EncodableVector v2 = new ASN1EncodableVector();
v2.add(OCSPObjectIdentifiers.id_pkix_ocsp_basic);
v2.add(doctet);
DEREnumerated den = new DEREnumerated(0);
ASN1EncodableVector v3 = new ASN1EncodableVector();
v3.add(den);
v3.add(new DERTaggedObject(true, 0, new DERSequence(v2)));
vo1.add(new DERSequence(v3));
revocationV.add(new DERTaggedObject(true, 1, new DERSequence(vo1)));
}
v.add(new DERSet(new DERSequence(revocationV)));
attribute.add(new DERSequence(v));
}
return new DERSet(attribute);
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
/**
* Getter for property reason.
* @return Value of property reason.
*/
public String getReason() {
return this.reason;
}
/**
* Setter for property reason.
* @param reason New value of property reason.
*/
public void setReason(String reason) {
this.reason = reason;
}
/**
* Getter for property location.
* @return Value of property location.
*/
public String getLocation() {
return this.location;
}
/**
* Setter for property location.
* @param location New value of property location.
*/
public void setLocation(String location) {
this.location = location;
}
/**
* Getter for property signDate.
* @return Value of property signDate.
*/
public Calendar getSignDate() {
return this.signDate;
}
/**
* Setter for property signDate.
* @param signDate New value of property signDate.
*/
public void setSignDate(Calendar signDate) {
this.signDate = signDate;
}
/**
* Getter for property sigName.
* @return Value of property sigName.
*/
public String getSignName() {
return this.signName;
}
/**
* Setter for property sigName.
* @param signName New value of property sigName.
*/
public void setSignName(String signName) {
this.signName = signName;
}
/**
* a class that holds an X509 name
*/
public static class X509Name {
/**
* country code - StringType(SIZE(2))
*/
public static final DERObjectIdentifier C = new DERObjectIdentifier("2.5.4.6");
/**
* organization - StringType(SIZE(1..64))
*/
public static final DERObjectIdentifier O = new DERObjectIdentifier("2.5.4.10");
/**
* organizational unit name - StringType(SIZE(1..64))
*/
public static final DERObjectIdentifier OU = new DERObjectIdentifier("2.5.4.11");
/**
* Title
*/
public static final DERObjectIdentifier T = new DERObjectIdentifier("2.5.4.12");
/**
* common name - StringType(SIZE(1..64))
*/
public static final DERObjectIdentifier CN = new DERObjectIdentifier("2.5.4.3");
/**
* device serial number name - StringType(SIZE(1..64))
*/
public static final DERObjectIdentifier SN = new DERObjectIdentifier("2.5.4.5");
/**
* locality name - StringType(SIZE(1..64))
*/
public static final DERObjectIdentifier L = new DERObjectIdentifier("2.5.4.7");
/**
* state, or province name - StringType(SIZE(1..64))
*/
public static final DERObjectIdentifier ST = new DERObjectIdentifier("2.5.4.8");
/** Naming attribute of type X520name */
public static final DERObjectIdentifier SURNAME = new DERObjectIdentifier("2.5.4.4");
/** Naming attribute of type X520name */
public static final DERObjectIdentifier GIVENNAME = new DERObjectIdentifier("2.5.4.42");
/** Naming attribute of type X520name */
public static final DERObjectIdentifier INITIALS = new DERObjectIdentifier("2.5.4.43");
/** Naming attribute of type X520name */
public static final DERObjectIdentifier GENERATION = new DERObjectIdentifier("2.5.4.44");
/** Naming attribute of type X520name */
public static final DERObjectIdentifier UNIQUE_IDENTIFIER = new DERObjectIdentifier("2.5.4.45");
/**
* Email address (RSA PKCS#9 extension) - IA5String.
* <p>Note: if you're trying to be ultra orthodox, don't use this! It shouldn't be in here.
*/
public static final DERObjectIdentifier EmailAddress = new DERObjectIdentifier("1.2.840.113549.1.9.1");
/**
* email address in Verisign certificates
*/
public static final DERObjectIdentifier E = EmailAddress;
/** object identifier */
public static final DERObjectIdentifier DC = new DERObjectIdentifier("0.9.2342.19200300.100.1.25");
/** LDAP User id. */
public static final DERObjectIdentifier UID = new DERObjectIdentifier("0.9.2342.19200300.100.1.1");
/** A HashMap with default symbols */
public static HashMap<DERObjectIdentifier, String> DefaultSymbols = new HashMap<DERObjectIdentifier, String>();
static {
DefaultSymbols.put(C, "C");
DefaultSymbols.put(O, "O");
DefaultSymbols.put(T, "T");
DefaultSymbols.put(OU, "OU");
DefaultSymbols.put(CN, "CN");
DefaultSymbols.put(L, "L");
DefaultSymbols.put(ST, "ST");
DefaultSymbols.put(SN, "SN");
DefaultSymbols.put(EmailAddress, "E");
DefaultSymbols.put(DC, "DC");
DefaultSymbols.put(UID, "UID");
DefaultSymbols.put(SURNAME, "SURNAME");
DefaultSymbols.put(GIVENNAME, "GIVENNAME");
DefaultSymbols.put(INITIALS, "INITIALS");
DefaultSymbols.put(GENERATION, "GENERATION");
}
/** A HashMap with values */
public HashMap<String, ArrayList<String>> values = new HashMap<String, ArrayList<String>>();
/**
* Constructs an X509 name
* @param seq an ASN1 Sequence
*/
@SuppressWarnings("unchecked")
public X509Name(ASN1Sequence seq) {
Enumeration<ASN1Set> e = seq.getObjects();
while (e.hasMoreElements()) {
ASN1Set set = e.nextElement();
for (int i = 0; i < set.size(); i++) {
ASN1Sequence s = (ASN1Sequence)set.getObjectAt(i);
String id = DefaultSymbols.get(s.getObjectAt(0));
if (id == null)
continue;
ArrayList<String> vs = values.get(id);
if (vs == null) {
vs = new ArrayList<String>();
values.put(id, vs);
}
vs.add(((DERString)s.getObjectAt(1)).getString());
}
}
}
/**
* Constructs an X509 name
* @param dirName a directory name
*/
public X509Name(String dirName) {
X509NameTokenizer nTok = new X509NameTokenizer(dirName);
while (nTok.hasMoreTokens()) {
String token = nTok.nextToken();
int index = token.indexOf('=');
if (index == -1) {
throw new IllegalArgumentException(MessageLocalization.getComposedMessage("badly.formated.directory.string"));
}
String id = token.substring(0, index).toUpperCase();
String value = token.substring(index + 1);
ArrayList<String> vs = values.get(id);
if (vs == null) {
vs = new ArrayList<String>();
values.put(id, vs);
}
vs.add(value);
}
}
public String getField(String name) {
ArrayList<String> vs = values.get(name);
return vs == null ? null : (String)vs.get(0);
}
/**
* gets a field array from the values Hashmap
* @param name
* @return an ArrayList
*/
public ArrayList<String> getFieldArray(String name) {
ArrayList<String> vs = values.get(name);
return vs == null ? null : vs;
}
/**
* getter for values
* @return a HashMap with the fields of the X509 name
*/
public HashMap<String, ArrayList<String>> getFields() {
return values;
}
/**
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return values.toString();
}
}
/**
* class for breaking up an X500 Name into it's component tokens, ala
* java.util.StringTokenizer. We need this class as some of the
* lightweight Java environment don't support classes like
* StringTokenizer.
*/
public static class X509NameTokenizer {
private String oid;
private int index;
private StringBuffer buf = new StringBuffer();
public X509NameTokenizer(
String oid) {
this.oid = oid;
this.index = -1;
}
public boolean hasMoreTokens() {
return index != oid.length();
}
public String nextToken() {
if (index == oid.length()) {
return null;
}
int end = index + 1;
boolean quoted = false;
boolean escaped = false;
buf.setLength(0);
while (end != oid.length()) {
char c = oid.charAt(end);
if (c == '"') {
if (!escaped) {
quoted = !quoted;
}
else {
buf.append(c);
}
escaped = false;
}
else {
if (escaped || quoted) {
buf.append(c);
escaped = false;
}
else if (c == '\\') {
escaped = true;
}
else if (c == ',') {
break;
}
else {
buf.append(c);
}
}
end++;
}
index = end;
return buf.toString().trim();
}
}
}
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