| package org.bouncycastle.cms; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Enumeration; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.bouncycastle.asn1.ASN1Encodable; |
| import org.bouncycastle.asn1.ASN1EncodableVector; |
| import org.bouncycastle.asn1.ASN1InputStream; |
| import org.bouncycastle.asn1.ASN1ObjectIdentifier; |
| import org.bouncycastle.asn1.ASN1OctetString; |
| import org.bouncycastle.asn1.ASN1Sequence; |
| import org.bouncycastle.asn1.ASN1Set; |
| import org.bouncycastle.asn1.BERSequence; |
| import org.bouncycastle.asn1.DERSet; |
| import org.bouncycastle.asn1.cms.ContentInfo; |
| import org.bouncycastle.asn1.cms.SignedData; |
| import org.bouncycastle.asn1.cms.SignerInfo; |
| import org.bouncycastle.asn1.x509.AlgorithmIdentifier; |
| import org.bouncycastle.cert.X509AttributeCertificateHolder; |
| import org.bouncycastle.cert.X509CRLHolder; |
| import org.bouncycastle.cert.X509CertificateHolder; |
| import org.bouncycastle.operator.OperatorCreationException; |
| import org.bouncycastle.util.Encodable; |
| import org.bouncycastle.util.Store; |
| |
| /** |
| * general class for handling a pkcs7-signature message. |
| * |
| * A simple example of usage - note, in the example below the validity of |
| * the certificate isn't verified, just the fact that one of the certs |
| * matches the given signer... |
| * |
| * <pre> |
| * Store certStore = s.getCertificates(); |
| * SignerInformationStore signers = s.getSignerInfos(); |
| * Collection c = signers.getSigners(); |
| * Iterator it = c.iterator(); |
| * |
| * while (it.hasNext()) |
| * { |
| * SignerInformation signer = (SignerInformation)it.next(); |
| * Collection certCollection = certStore.getMatches(signer.getSID()); |
| * |
| * Iterator certIt = certCollection.iterator(); |
| * X509CertificateHolder cert = (X509CertificateHolder)certIt.next(); |
| * |
| * if (signer.verify(new JcaSimpleSignerInfoVerifierBuilder().setProvider("BC").build(cert))) |
| * { |
| * verified++; |
| * } |
| * } |
| * </pre> |
| */ |
| public class CMSSignedData |
| implements Encodable |
| { |
| private static final CMSSignedHelper HELPER = CMSSignedHelper.INSTANCE; |
| |
| SignedData signedData; |
| ContentInfo contentInfo; |
| CMSTypedData signedContent; |
| SignerInformationStore signerInfoStore; |
| |
| private Map hashes; |
| |
| private CMSSignedData( |
| CMSSignedData c) |
| { |
| this.signedData = c.signedData; |
| this.contentInfo = c.contentInfo; |
| this.signedContent = c.signedContent; |
| this.signerInfoStore = c.signerInfoStore; |
| } |
| |
| public CMSSignedData( |
| byte[] sigBlock) |
| throws CMSException |
| { |
| this(CMSUtils.readContentInfo(sigBlock)); |
| } |
| |
| public CMSSignedData( |
| CMSProcessable signedContent, |
| byte[] sigBlock) |
| throws CMSException |
| { |
| this(signedContent, CMSUtils.readContentInfo(sigBlock)); |
| } |
| |
| /** |
| * Content with detached signature, digests precomputed |
| * |
| * @param hashes a map of precomputed digests for content indexed by name of hash. |
| * @param sigBlock the signature object. |
| */ |
| public CMSSignedData( |
| Map hashes, |
| byte[] sigBlock) |
| throws CMSException |
| { |
| this(hashes, CMSUtils.readContentInfo(sigBlock)); |
| } |
| |
| /** |
| * base constructor - content with detached signature. |
| * |
| * @param signedContent the content that was signed. |
| * @param sigData the signature object. |
| */ |
| public CMSSignedData( |
| CMSProcessable signedContent, |
| InputStream sigData) |
| throws CMSException |
| { |
| this(signedContent, CMSUtils.readContentInfo(new ASN1InputStream(sigData))); |
| } |
| |
| /** |
| * base constructor - with encapsulated content |
| */ |
| public CMSSignedData( |
| InputStream sigData) |
| throws CMSException |
| { |
| this(CMSUtils.readContentInfo(sigData)); |
| } |
| |
| public CMSSignedData( |
| final CMSProcessable signedContent, |
| ContentInfo sigData) |
| throws CMSException |
| { |
| if (signedContent instanceof CMSTypedData) |
| { |
| this.signedContent = (CMSTypedData)signedContent; |
| } |
| else |
| { |
| this.signedContent = new CMSTypedData() |
| { |
| public ASN1ObjectIdentifier getContentType() |
| { |
| return signedData.getEncapContentInfo().getContentType(); |
| } |
| |
| public void write(OutputStream out) |
| throws IOException, CMSException |
| { |
| signedContent.write(out); |
| } |
| |
| public Object getContent() |
| { |
| return signedContent.getContent(); |
| } |
| }; |
| } |
| |
| this.contentInfo = sigData; |
| this.signedData = getSignedData(); |
| } |
| |
| public CMSSignedData( |
| Map hashes, |
| ContentInfo sigData) |
| throws CMSException |
| { |
| this.hashes = hashes; |
| this.contentInfo = sigData; |
| this.signedData = getSignedData(); |
| } |
| |
| public CMSSignedData( |
| ContentInfo sigData) |
| throws CMSException |
| { |
| this.contentInfo = sigData; |
| this.signedData = getSignedData(); |
| |
| // |
| // this can happen if the signed message is sent simply to send a |
| // certificate chain. |
| // |
| ASN1Encodable content = signedData.getEncapContentInfo().getContent(); |
| if (content != null) |
| { |
| if (content instanceof ASN1OctetString) |
| { |
| this.signedContent = new CMSProcessableByteArray(signedData.getEncapContentInfo().getContentType(), |
| ((ASN1OctetString)content).getOctets()); |
| } |
| else |
| { |
| this.signedContent = new PKCS7ProcessableObject(signedData.getEncapContentInfo().getContentType(), content); |
| } |
| } |
| else |
| { |
| this.signedContent = null; |
| } |
| } |
| |
| private SignedData getSignedData() |
| throws CMSException |
| { |
| try |
| { |
| return SignedData.getInstance(contentInfo.getContent()); |
| } |
| catch (ClassCastException e) |
| { |
| throw new CMSException("Malformed content.", e); |
| } |
| catch (IllegalArgumentException e) |
| { |
| throw new CMSException("Malformed content.", e); |
| } |
| } |
| |
| /** |
| * Return the version number for this object |
| */ |
| public int getVersion() |
| { |
| return signedData.getVersion().getValue().intValue(); |
| } |
| |
| /** |
| * return the collection of signers that are associated with the |
| * signatures for the message. |
| */ |
| public SignerInformationStore getSignerInfos() |
| { |
| if (signerInfoStore == null) |
| { |
| ASN1Set s = signedData.getSignerInfos(); |
| List signerInfos = new ArrayList(); |
| |
| for (int i = 0; i != s.size(); i++) |
| { |
| SignerInfo info = SignerInfo.getInstance(s.getObjectAt(i)); |
| ASN1ObjectIdentifier contentType = signedData.getEncapContentInfo().getContentType(); |
| |
| if (hashes == null) |
| { |
| signerInfos.add(new SignerInformation(info, contentType, signedContent, null)); |
| } |
| else |
| { |
| Object obj = hashes.keySet().iterator().next(); |
| byte[] hash = (obj instanceof String) ? (byte[])hashes.get(info.getDigestAlgorithm().getAlgorithm().getId()) : (byte[])hashes.get(info.getDigestAlgorithm().getAlgorithm()); |
| |
| signerInfos.add(new SignerInformation(info, contentType, null, hash)); |
| } |
| } |
| |
| signerInfoStore = new SignerInformationStore(signerInfos); |
| } |
| |
| return signerInfoStore; |
| } |
| |
| /** |
| * Return if this is object represents a detached signature. |
| * |
| * @return true if this message represents a detached signature, false otherwise. |
| */ |
| public boolean isDetachedSignature() |
| { |
| return signedData.getEncapContentInfo().getContent() == null && signedData.getSignerInfos().size() > 0; |
| } |
| |
| /** |
| * Return if this is object represents a certificate management message. |
| * |
| * @return true if the message has no signers or content, false otherwise. |
| */ |
| public boolean isCertificateManagementMessage() |
| { |
| return signedData.getEncapContentInfo().getContent() == null && signedData.getSignerInfos().size() == 0; |
| } |
| |
| /** |
| * Return any X.509 certificate objects in this SignedData structure as a Store of X509CertificateHolder objects. |
| * |
| * @return a Store of X509CertificateHolder objects. |
| */ |
| public Store<X509CertificateHolder> getCertificates() |
| { |
| return HELPER.getCertificates(signedData.getCertificates()); |
| } |
| |
| /** |
| * Return any X.509 CRL objects in this SignedData structure as a Store of X509CRLHolder objects. |
| * |
| * @return a Store of X509CRLHolder objects. |
| */ |
| public Store<X509CRLHolder> getCRLs() |
| { |
| return HELPER.getCRLs(signedData.getCRLs()); |
| } |
| |
| /** |
| * Return any X.509 attribute certificate objects in this SignedData structure as a Store of X509AttributeCertificateHolder objects. |
| * |
| * @return a Store of X509AttributeCertificateHolder objects. |
| */ |
| public Store<X509AttributeCertificateHolder> getAttributeCertificates() |
| { |
| return HELPER.getAttributeCertificates(signedData.getCertificates()); |
| } |
| |
| // BEGIN Android-removed: OtherRevocationInfoFormat isn't supported |
| /* |
| /** |
| * Return any OtherRevocationInfo OtherRevInfo objects of the type indicated by otherRevocationInfoFormat in |
| * this SignedData structure. |
| * |
| * @param otherRevocationInfoFormat OID of the format type been looked for. |
| * |
| * @return a Store of ASN1Encodable objects representing any objects of otherRevocationInfoFormat found. |
| * |
| public Store getOtherRevocationInfo(ASN1ObjectIdentifier otherRevocationInfoFormat) |
| { |
| return HELPER.getOtherRevocationInfo(otherRevocationInfoFormat, signedData.getCRLs()); |
| } |
| */ |
| // END Android-removed: OtherRevocationInfoFormat isn't supported |
| |
| /** |
| * Return the digest algorithm identifiers for the SignedData object |
| * |
| * @return the set of digest algorithm identifiers |
| */ |
| public Set<AlgorithmIdentifier> getDigestAlgorithmIDs() |
| { |
| Set<AlgorithmIdentifier> digests = new HashSet<AlgorithmIdentifier>(signedData.getDigestAlgorithms().size()); |
| |
| for (Enumeration en = signedData.getDigestAlgorithms().getObjects(); en.hasMoreElements();) |
| { |
| digests.add(AlgorithmIdentifier.getInstance(en.nextElement())); |
| } |
| |
| return Collections.unmodifiableSet(digests); |
| } |
| |
| /** |
| * Return the a string representation of the OID associated with the |
| * encapsulated content info structure carried in the signed data. |
| * |
| * @return the OID for the content type. |
| */ |
| public String getSignedContentTypeOID() |
| { |
| return signedData.getEncapContentInfo().getContentType().getId(); |
| } |
| |
| public CMSTypedData getSignedContent() |
| { |
| return signedContent; |
| } |
| |
| /** |
| * return the ContentInfo |
| */ |
| public ContentInfo toASN1Structure() |
| { |
| return contentInfo; |
| } |
| |
| /** |
| * return the ASN.1 encoded representation of this object. |
| */ |
| public byte[] getEncoded() |
| throws IOException |
| { |
| return contentInfo.getEncoded(); |
| } |
| |
| // BEGIN Android-removed: Unknown reason |
| /* |
| /** |
| * Verify all the SignerInformation objects and their associated counter signatures attached |
| * to this CMS SignedData object. |
| * |
| * @param verifierProvider a provider of SignerInformationVerifier objects. |
| * @return true if all verify, false otherwise. |
| * @throws CMSException if an exception occurs during the verification process. |
| * |
| public boolean verifySignatures(SignerInformationVerifierProvider verifierProvider) |
| throws CMSException |
| { |
| return verifySignatures(verifierProvider, false); |
| } |
| |
| /** |
| * Verify all the SignerInformation objects and optionally their associated counter signatures attached |
| * to this CMS SignedData object. |
| * |
| * @param verifierProvider a provider of SignerInformationVerifier objects. |
| * @param ignoreCounterSignatures if true don't check counter signatures. If false check counter signatures as well. |
| * @return true if all verify, false otherwise. |
| * @throws CMSException if an exception occurs during the verification process. |
| * |
| public boolean verifySignatures(SignerInformationVerifierProvider verifierProvider, boolean ignoreCounterSignatures) |
| throws CMSException |
| { |
| Collection signers = this.getSignerInfos().getSigners(); |
| |
| for (Iterator it = signers.iterator(); it.hasNext();) |
| { |
| SignerInformation signer = (SignerInformation)it.next(); |
| |
| try |
| { |
| SignerInformationVerifier verifier = verifierProvider.get(signer.getSID()); |
| |
| if (!signer.verify(verifier)) |
| { |
| return false; |
| } |
| |
| if (!ignoreCounterSignatures) |
| { |
| Collection counterSigners = signer.getCounterSignatures().getSigners(); |
| |
| for (Iterator cIt = counterSigners.iterator(); cIt.hasNext();) |
| { |
| if (!verifyCounterSignature((SignerInformation)cIt.next(), verifierProvider)) |
| { |
| return false; |
| } |
| } |
| } |
| } |
| catch (OperatorCreationException e) |
| { |
| throw new CMSException("failure in verifier provider: " + e.getMessage(), e); |
| } |
| } |
| |
| return true; |
| } |
| |
| private boolean verifyCounterSignature(SignerInformation counterSigner, SignerInformationVerifierProvider verifierProvider) |
| throws OperatorCreationException, CMSException |
| { |
| SignerInformationVerifier counterVerifier = verifierProvider.get(counterSigner.getSID()); |
| |
| if (!counterSigner.verify(counterVerifier)) |
| { |
| return false; |
| } |
| |
| Collection counterSigners = counterSigner.getCounterSignatures().getSigners(); |
| for (Iterator cIt = counterSigners.iterator(); cIt.hasNext();) |
| { |
| if (!verifyCounterSignature((SignerInformation)cIt.next(), verifierProvider)) |
| { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| */ |
| // END Android-removed: Unknown reason |
| |
| /** |
| * Replace the SignerInformation store associated with this |
| * CMSSignedData object with the new one passed in. You would |
| * probably only want to do this if you wanted to change the unsigned |
| * attributes associated with a signer, or perhaps delete one. |
| * |
| * @param signedData the signed data object to be used as a base. |
| * @param signerInformationStore the new signer information store to use. |
| * @return a new signed data object. |
| */ |
| public static CMSSignedData replaceSigners( |
| CMSSignedData signedData, |
| SignerInformationStore signerInformationStore) |
| { |
| // |
| // copy |
| // |
| CMSSignedData cms = new CMSSignedData(signedData); |
| |
| // |
| // replace the store |
| // |
| cms.signerInfoStore = signerInformationStore; |
| |
| // |
| // replace the signers in the SignedData object |
| // |
| ASN1EncodableVector digestAlgs = new ASN1EncodableVector(); |
| ASN1EncodableVector vec = new ASN1EncodableVector(); |
| |
| Iterator it = signerInformationStore.getSigners().iterator(); |
| while (it.hasNext()) |
| { |
| SignerInformation signer = (SignerInformation)it.next(); |
| digestAlgs.add(CMSSignedHelper.INSTANCE.fixAlgID(signer.getDigestAlgorithmID())); |
| vec.add(signer.toASN1Structure()); |
| } |
| |
| ASN1Set digests = new DERSet(digestAlgs); |
| ASN1Set signers = new DERSet(vec); |
| ASN1Sequence sD = (ASN1Sequence)signedData.signedData.toASN1Primitive(); |
| |
| vec = new ASN1EncodableVector(); |
| |
| // |
| // signers are the last item in the sequence. |
| // |
| vec.add(sD.getObjectAt(0)); // version |
| vec.add(digests); |
| |
| for (int i = 2; i != sD.size() - 1; i++) |
| { |
| vec.add(sD.getObjectAt(i)); |
| } |
| |
| vec.add(signers); |
| |
| cms.signedData = SignedData.getInstance(new BERSequence(vec)); |
| |
| // |
| // replace the contentInfo with the new one |
| // |
| cms.contentInfo = new ContentInfo(cms.contentInfo.getContentType(), cms.signedData); |
| |
| return cms; |
| } |
| |
| /** |
| * Replace the certificate and CRL information associated with this |
| * CMSSignedData object with the new one passed in. |
| * |
| * @param signedData the signed data object to be used as a base. |
| * @param certificates the new certificates to be used. |
| * @param attrCerts the new attribute certificates to be used. |
| * @param revocations the new CRLs to be used - a collection of X509CRLHolder objects, OtherRevocationInfoFormat, or both. |
| * @return a new signed data object. |
| * @exception CMSException if there is an error processing the CertStore |
| */ |
| public static CMSSignedData replaceCertificatesAndCRLs( |
| CMSSignedData signedData, |
| Store certificates, |
| Store attrCerts, |
| Store revocations) |
| throws CMSException |
| { |
| // |
| // copy |
| // |
| CMSSignedData cms = new CMSSignedData(signedData); |
| |
| // |
| // replace the certs and revocations in the SignedData object |
| // |
| ASN1Set certSet = null; |
| ASN1Set crlSet = null; |
| |
| if (certificates != null || attrCerts != null) |
| { |
| List certs = new ArrayList(); |
| |
| if (certificates != null) |
| { |
| certs.addAll(CMSUtils.getCertificatesFromStore(certificates)); |
| } |
| if (attrCerts != null) |
| { |
| certs.addAll(CMSUtils.getAttributeCertificatesFromStore(attrCerts)); |
| } |
| |
| ASN1Set set = CMSUtils.createBerSetFromList(certs); |
| |
| if (set.size() != 0) |
| { |
| certSet = set; |
| } |
| } |
| |
| if (revocations != null) |
| { |
| ASN1Set set = CMSUtils.createBerSetFromList(CMSUtils.getCRLsFromStore(revocations)); |
| |
| if (set.size() != 0) |
| { |
| crlSet = set; |
| } |
| } |
| |
| // |
| // replace the CMS structure. |
| // |
| cms.signedData = new SignedData(signedData.signedData.getDigestAlgorithms(), |
| signedData.signedData.getEncapContentInfo(), |
| certSet, |
| crlSet, |
| signedData.signedData.getSignerInfos()); |
| |
| // |
| // replace the contentInfo with the new one |
| // |
| cms.contentInfo = new ContentInfo(cms.contentInfo.getContentType(), cms.signedData); |
| |
| return cms; |
| } |
| } |
