diff options
Diffstat (limited to 'bcpkix/src/main/java/org/bouncycastle/tsp/TimeStampToken.java')
| -rw-r--r-- | bcpkix/src/main/java/org/bouncycastle/tsp/TimeStampToken.java | 393 |
1 files changed, 0 insertions, 393 deletions
diff --git a/bcpkix/src/main/java/org/bouncycastle/tsp/TimeStampToken.java b/bcpkix/src/main/java/org/bouncycastle/tsp/TimeStampToken.java deleted file mode 100644 index 0422998..0000000 --- a/bcpkix/src/main/java/org/bouncycastle/tsp/TimeStampToken.java +++ /dev/null @@ -1,393 +0,0 @@ -package org.bouncycastle.tsp; - -import java.io.ByteArrayInputStream; -import java.io.ByteArrayOutputStream; -import java.io.IOException; -import java.io.OutputStream; -import java.util.Collection; -import java.util.Date; - -import org.bouncycastle.asn1.ASN1InputStream; -import org.bouncycastle.asn1.cms.Attribute; -import org.bouncycastle.asn1.cms.AttributeTable; -import org.bouncycastle.asn1.cms.ContentInfo; -import org.bouncycastle.asn1.cms.IssuerAndSerialNumber; -import org.bouncycastle.asn1.ess.ESSCertID; -import org.bouncycastle.asn1.ess.ESSCertIDv2; -import org.bouncycastle.asn1.ess.SigningCertificate; -import org.bouncycastle.asn1.ess.SigningCertificateV2; -import org.bouncycastle.asn1.nist.NISTObjectIdentifiers; -import org.bouncycastle.asn1.oiw.OIWObjectIdentifiers; -import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers; -import org.bouncycastle.asn1.tsp.TSTInfo; -import org.bouncycastle.asn1.x500.X500Name; -import org.bouncycastle.asn1.x509.AlgorithmIdentifier; -import org.bouncycastle.asn1.x509.GeneralName; -import org.bouncycastle.asn1.x509.IssuerSerial; -import org.bouncycastle.cert.X509CertificateHolder; -import org.bouncycastle.cms.CMSException; -import org.bouncycastle.cms.CMSProcessable; -import org.bouncycastle.cms.CMSSignedData; -import org.bouncycastle.cms.SignerId; -import org.bouncycastle.cms.SignerInformation; -import org.bouncycastle.cms.SignerInformationVerifier; -import org.bouncycastle.operator.DigestCalculator; -import org.bouncycastle.operator.OperatorCreationException; -import org.bouncycastle.util.Arrays; -import org.bouncycastle.util.Store; - -/** - * Carrier class for a TimeStampToken. - */ -public class TimeStampToken -{ - CMSSignedData tsToken; - - SignerInformation tsaSignerInfo; - - Date genTime; - - TimeStampTokenInfo tstInfo; - - CertID certID; - - public TimeStampToken(ContentInfo contentInfo) - throws TSPException, IOException - { - this(getSignedData(contentInfo)); - } - - private static CMSSignedData getSignedData(ContentInfo contentInfo) - throws TSPException - { - try - { - return new CMSSignedData(contentInfo); - } - catch (CMSException e) - { - throw new TSPException("TSP parsing error: " + e.getMessage(), e.getCause()); - } - } - - public TimeStampToken(CMSSignedData signedData) - throws TSPException, IOException - { - this.tsToken = signedData; - - if (!this.tsToken.getSignedContentTypeOID().equals(PKCSObjectIdentifiers.id_ct_TSTInfo.getId())) - { - throw new TSPValidationException("ContentInfo object not for a time stamp."); - } - - Collection signers = tsToken.getSignerInfos().getSigners(); - - if (signers.size() != 1) - { - throw new IllegalArgumentException("Time-stamp token signed by " - + signers.size() - + " signers, but it must contain just the TSA signature."); - } - - tsaSignerInfo = (SignerInformation)signers.iterator().next(); - - try - { - CMSProcessable content = tsToken.getSignedContent(); - ByteArrayOutputStream bOut = new ByteArrayOutputStream(); - - content.write(bOut); - - ASN1InputStream aIn = new ASN1InputStream(new ByteArrayInputStream(bOut.toByteArray())); - - this.tstInfo = new TimeStampTokenInfo(TSTInfo.getInstance(aIn.readObject())); - - Attribute attr = tsaSignerInfo.getSignedAttributes().get(PKCSObjectIdentifiers.id_aa_signingCertificate); - - if (attr != null) - { - SigningCertificate signCert = SigningCertificate.getInstance(attr.getAttrValues().getObjectAt(0)); - - this.certID = new CertID(ESSCertID.getInstance(signCert.getCerts()[0])); - } - else - { - attr = tsaSignerInfo.getSignedAttributes().get(PKCSObjectIdentifiers.id_aa_signingCertificateV2); - - if (attr == null) - { - throw new TSPValidationException("no signing certificate attribute found, time stamp invalid."); - } - - SigningCertificateV2 signCertV2 = SigningCertificateV2.getInstance(attr.getAttrValues().getObjectAt(0)); - - this.certID = new CertID(ESSCertIDv2.getInstance(signCertV2.getCerts()[0])); - } - } - catch (CMSException e) - { - throw new TSPException(e.getMessage(), e.getUnderlyingException()); - } - } - - public TimeStampTokenInfo getTimeStampInfo() - { - return tstInfo; - } - - public SignerId getSID() - { - return tsaSignerInfo.getSID(); - } - - public AttributeTable getSignedAttributes() - { - return tsaSignerInfo.getSignedAttributes(); - } - - public AttributeTable getUnsignedAttributes() - { - return tsaSignerInfo.getUnsignedAttributes(); - } - - public Store getCertificates() - { - return tsToken.getCertificates(); - } - - public Store getCRLs() - { - return tsToken.getCRLs(); - } - - public Store getAttributeCertificates() - { - return tsToken.getAttributeCertificates(); - } - - /** - * Validate the time stamp token. - * <p> - * To be valid the token must be signed by the passed in certificate and - * the certificate must be the one referred to by the SigningCertificate - * attribute included in the hashed attributes of the token. The - * certificate must also have the ExtendedKeyUsageExtension with only - * KeyPurposeId.id_kp_timeStamping and have been valid at the time the - * timestamp was created. - * </p> - * <p> - * A successful call to validate means all the above are true. - * </p> - * - * @param sigVerifier the content verifier create the objects required to verify the CMS object in the timestamp. - * @throws TSPException if an exception occurs in processing the token. - * @throws TSPValidationException if the certificate or signature fail to be valid. - * @throws IllegalArgumentException if the sigVerifierProvider has no associated certificate. - */ - public void validate( - SignerInformationVerifier sigVerifier) - throws TSPException, TSPValidationException - { - if (!sigVerifier.hasAssociatedCertificate()) - { - throw new IllegalArgumentException("verifier provider needs an associated certificate"); - } - - try - { - X509CertificateHolder certHolder = sigVerifier.getAssociatedCertificate(); - DigestCalculator calc = sigVerifier.getDigestCalculator(certID.getHashAlgorithm()); - - OutputStream cOut = calc.getOutputStream(); - - cOut.write(certHolder.getEncoded()); - cOut.close(); - - if (!Arrays.constantTimeAreEqual(certID.getCertHash(), calc.getDigest())) - { - throw new TSPValidationException("certificate hash does not match certID hash."); - } - - if (certID.getIssuerSerial() != null) - { - IssuerAndSerialNumber issuerSerial = new IssuerAndSerialNumber(certHolder.toASN1Structure()); - - if (!certID.getIssuerSerial().getSerial().equals(issuerSerial.getSerialNumber())) - { - throw new TSPValidationException("certificate serial number does not match certID for signature."); - } - - GeneralName[] names = certID.getIssuerSerial().getIssuer().getNames(); - boolean found = false; - - for (int i = 0; i != names.length; i++) - { - if (names[i].getTagNo() == 4 && X500Name.getInstance(names[i].getName()).equals(X500Name.getInstance(issuerSerial.getName()))) - { - found = true; - break; - } - } - - if (!found) - { - throw new TSPValidationException("certificate name does not match certID for signature. "); - } - } - - TSPUtil.validateCertificate(certHolder); - - if (!certHolder.isValidOn(tstInfo.getGenTime())) - { - throw new TSPValidationException("certificate not valid when time stamp created."); - } - - if (!tsaSignerInfo.verify(sigVerifier)) - { - throw new TSPValidationException("signature not created by certificate."); - } - } - catch (CMSException e) - { - if (e.getUnderlyingException() != null) - { - throw new TSPException(e.getMessage(), e.getUnderlyingException()); - } - else - { - throw new TSPException("CMS exception: " + e, e); - } - } - catch (IOException e) - { - throw new TSPException("problem processing certificate: " + e, e); - } - catch (OperatorCreationException e) - { - throw new TSPException("unable to create digest: " + e.getMessage(), e); - } - } - - /** - * Return true if the signature on time stamp token is valid. - * <p> - * Note: this is a much weaker proof of correctness than calling validate(). - * </p> - * - * @param sigVerifier the content verifier create the objects required to verify the CMS object in the timestamp. - * @return true if the signature matches, false otherwise. - * @throws TSPException if the signature cannot be processed or the provider cannot match the algorithm. - */ - public boolean isSignatureValid( - SignerInformationVerifier sigVerifier) - throws TSPException - { - try - { - return tsaSignerInfo.verify(sigVerifier); - } - catch (CMSException e) - { - if (e.getUnderlyingException() != null) - { - throw new TSPException(e.getMessage(), e.getUnderlyingException()); - } - else - { - throw new TSPException("CMS exception: " + e, e); - } - } - } - - /** - * Return the underlying CMSSignedData object. - * - * @return the underlying CMS structure. - */ - public CMSSignedData toCMSSignedData() - { - return tsToken; - } - - /** - * Return a ASN.1 encoded byte stream representing the encoded object. - * - * @throws IOException if encoding fails. - */ - public byte[] getEncoded() - throws IOException - { - return tsToken.getEncoded(); - } - - // perhaps this should be done using an interface on the ASN.1 classes... - private class CertID - { - private ESSCertID certID; - private ESSCertIDv2 certIDv2; - - CertID(ESSCertID certID) - { - this.certID = certID; - this.certIDv2 = null; - } - - CertID(ESSCertIDv2 certID) - { - this.certIDv2 = certID; - this.certID = null; - } - - public String getHashAlgorithmName() - { - if (certID != null) - { - return "SHA-1"; - } - else - { - if (NISTObjectIdentifiers.id_sha256.equals(certIDv2.getHashAlgorithm().getAlgorithm())) - { - return "SHA-256"; - } - return certIDv2.getHashAlgorithm().getAlgorithm().getId(); - } - } - - public AlgorithmIdentifier getHashAlgorithm() - { - if (certID != null) - { - return new AlgorithmIdentifier(OIWObjectIdentifiers.idSHA1); - } - else - { - return certIDv2.getHashAlgorithm(); - } - } - - public byte[] getCertHash() - { - if (certID != null) - { - return certID.getCertHash(); - } - else - { - return certIDv2.getCertHash(); - } - } - - public IssuerSerial getIssuerSerial() - { - if (certID != null) - { - return certID.getIssuerSerial(); - } - else - { - return certIDv2.getIssuerSerial(); - } - } - } -} |