List of usage examples for org.bouncycastle.asn1.x509 DigestInfo getAlgorithmId
public AlgorithmIdentifier getAlgorithmId()
From source file:be.fedict.eid.applet.service.impl.handler.AuthenticationDataMessageHandler.java
License:Open Source License
public Object handleMessage(AuthenticationDataMessage message, Map<String, String> httpHeaders, HttpServletRequest request, HttpSession session) throws ServletException { LOG.debug("authentication data message received"); if (null == message.authnCert) { /*/*from w w w . ja v a 2 s . co m*/ * Can be the case for future (Kids) eID cards that have some * certificates missing. */ String msg = "authentication certificate not present"; LOG.warn(msg); throw new ServletException(msg); } byte[] signatureValue = message.signatureValue; LOG.debug("authn signing certificate subject: " + message.authnCert.getSubjectX500Principal()); PublicKey signingKey = message.authnCert.getPublicKey(); if (this.sessionIdChannelBinding) { checkSessionIdChannelBinding(message, request); if (null == this.serverCertificate) { LOG.warn("adviced to use in combination with server certificate channel binding"); } } ChannelBindingService channelBindingService = this.channelBindingServiceLocator.locateService(); if (null != this.serverCertificate || null != channelBindingService) { LOG.debug("using server certificate channel binding"); } if (false == this.sessionIdChannelBinding && null == this.serverCertificate && null == channelBindingService) { LOG.warn("not using any secure channel binding"); } byte[] challenge; try { challenge = AuthenticationChallenge.getAuthnChallenge(session, this.maxMaturity); } catch (SecurityException e) { AuditService auditService = this.auditServiceLocator.locateService(); if (null != auditService) { String remoteAddress = request.getRemoteAddr(); auditService.authenticationError(remoteAddress, message.authnCert); } throw new ServletException("security error: " + e.getMessage(), e); } byte[] serverCertificateClientPOV = null; try { if (null != message.serverCertificate) { serverCertificateClientPOV = message.serverCertificate.getEncoded(); } } catch (CertificateEncodingException e) { throw new ServletException("server cert decoding error: " + e.getMessage(), e); } /* * We validate the authentication contract using the client-side * communicated server SSL certificate in case of secure channel * binding. */ AuthenticationContract authenticationContract = new AuthenticationContract(message.saltValue, this.hostname, this.inetAddress, message.sessionId, serverCertificateClientPOV, challenge); byte[] toBeSigned; try { toBeSigned = authenticationContract.calculateToBeSigned(); } catch (IOException e) { throw new ServletException("IO error: " + e.getMessage(), e); } try { Signature signature = Signature.getInstance("SHA1withRSA"); signature.initVerify(signingKey); signature.update(toBeSigned); boolean result = signature.verify(signatureValue); if (false == result) { AuditService auditService = this.auditServiceLocator.locateService(); if (null != auditService) { String remoteAddress = request.getRemoteAddr(); auditService.authenticationError(remoteAddress, message.authnCert); } throw new SecurityException("authn signature incorrect"); } } catch (NoSuchAlgorithmException e) { throw new SecurityException("algo error"); } catch (InvalidKeyException e) { throw new SecurityException("authn key error"); } catch (SignatureException e) { throw new SecurityException("signature error"); } RequestContext requestContext = new RequestContext(session); String transactionMessage = requestContext.getTransactionMessage(); if (null != transactionMessage) { LOG.debug("verifying TransactionMessage signature"); byte[] transactionMessageSignature = message.transactionMessageSignature; if (null == transactionMessageSignature) { throw new SecurityException("missing TransactionMessage signature"); } try { Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding"); cipher.init(Cipher.DECRYPT_MODE, signingKey); byte[] signatureDigestInfoValue = cipher.doFinal(transactionMessageSignature); ASN1InputStream aIn = new ASN1InputStream(signatureDigestInfoValue); DigestInfo signatureDigestInfo = new DigestInfo((ASN1Sequence) aIn.readObject()); if (false == PLAIN_TEXT_DIGEST_ALGO_OID .equals(signatureDigestInfo.getAlgorithmId().getObjectId().getId())) { throw new SecurityException("TransactionMessage signature algo OID incorrect"); } if (false == Arrays.equals(transactionMessage.getBytes(), signatureDigestInfo.getDigest())) { throw new SecurityException("signed TransactionMessage incorrect"); } LOG.debug("TransactionMessage signature validated"); } catch (Exception e) { LOG.error("error verifying TransactionMessage signature", e); AuditService auditService = this.auditServiceLocator.locateService(); if (null != auditService) { String remoteAddress = request.getRemoteAddr(); auditService.authenticationError(remoteAddress, message.authnCert); } throw new SecurityException("error verifying TransactionMessage signature: " + e.getMessage()); } } /* * Secure channel binding verification. */ if (null != channelBindingService) { X509Certificate serverCertificate = channelBindingService.getServerCertificate(); if (null == serverCertificate) { LOG.warn("could not verify secure channel binding as the server does not know its identity yet"); } else { if (false == serverCertificate.equals(message.serverCertificate)) { AuditService auditService = this.auditServiceLocator.locateService(); if (null != auditService) { String remoteAddress = request.getRemoteAddr(); auditService.authenticationError(remoteAddress, message.authnCert); } throw new SecurityException("secure channel binding identity mismatch"); } LOG.debug("secure channel binding verified"); } } else { if (null != this.serverCertificate) { if (false == this.serverCertificate.equals(message.serverCertificate)) { AuditService auditService = this.auditServiceLocator.locateService(); if (null != auditService) { String remoteAddress = request.getRemoteAddr(); auditService.authenticationError(remoteAddress, message.authnCert); } throw new SecurityException("secure channel binding identity mismatch"); } LOG.debug("secure channel binding verified"); } } AuthenticationService authenticationService = this.authenticationServiceLocator.locateService(); List<X509Certificate> certificateChain = new LinkedList<X509Certificate>(); certificateChain.add(message.authnCert); certificateChain.add(message.citizenCaCert); certificateChain.add(message.rootCaCert); try { authenticationService.validateCertificateChain(certificateChain); } catch (ExpiredCertificateSecurityException e) { return new FinishedMessage(ErrorCode.CERTIFICATE_EXPIRED); } catch (RevokedCertificateSecurityException e) { return new FinishedMessage(ErrorCode.CERTIFICATE_REVOKED); } catch (TrustCertificateSecurityException e) { return new FinishedMessage(ErrorCode.CERTIFICATE_NOT_TRUSTED); } catch (CertificateSecurityException e) { return new FinishedMessage(ErrorCode.CERTIFICATE); } catch (Exception e) { /* * We don't want to depend on the full JavaEE profile in this * artifact. */ if ("javax.ejb.EJBException".equals(e.getClass().getName())) { Exception exception; try { Method getCausedByExceptionMethod = e.getClass().getMethod("getCausedByException", new Class[] {}); exception = (Exception) getCausedByExceptionMethod.invoke(e, new Object[] {}); } catch (Exception e2) { LOG.debug("error: " + e.getMessage(), e); throw new SecurityException("error retrieving the root cause: " + e2.getMessage()); } if (exception instanceof ExpiredCertificateSecurityException) { return new FinishedMessage(ErrorCode.CERTIFICATE_EXPIRED); } if (exception instanceof RevokedCertificateSecurityException) { return new FinishedMessage(ErrorCode.CERTIFICATE_REVOKED); } if (exception instanceof TrustCertificateSecurityException) { return new FinishedMessage(ErrorCode.CERTIFICATE_NOT_TRUSTED); } if (exception instanceof CertificateSecurityException) { return new FinishedMessage(ErrorCode.CERTIFICATE); } } throw new SecurityException("authn service error: " + e.getMessage()); } String userId = UserIdentifierUtil.getUserId(message.authnCert); LOG.info("authenticated: " + userId + " @ " + request.getRemoteAddr()); if (null != this.nrcidSecret) { userId = UserIdentifierUtil.getNonReversibleCitizenIdentifier(userId, this.nrcidOrgId, this.nrcidAppId, this.nrcidSecret); } /* * Some people state that you cannot use the national register number * without hashing. Problem is that hashing introduces hash collision * problems. The probability is very low, but what if it's your leg * they're cutting of because of a patient mismatch based on the SHA1 of * your national register number? */ /* * Push authenticated used Id into the HTTP session. */ session.setAttribute(AUTHENTICATED_USER_IDENTIFIER_SESSION_ATTRIBUTE, userId); EIdData eidData = (EIdData) session.getAttribute(IdentityDataMessageHandler.EID_SESSION_ATTRIBUTE); if (null == eidData) { eidData = new EIdData(); session.setAttribute(IdentityDataMessageHandler.EID_SESSION_ATTRIBUTE, eidData); } eidData.identifier = userId; AuditService auditService = this.auditServiceLocator.locateService(); if (null != auditService) { auditService.authenticated(userId); } boolean includeIdentity = requestContext.includeIdentity(); boolean includeAddress = requestContext.includeAddress(); boolean includeCertificates = requestContext.includeCertificates(); boolean includePhoto = requestContext.includePhoto(); /* * Also process the identity data in case it was requested. */ if (includeIdentity) { if (null == message.identityData) { throw new ServletException("identity data not included while requested"); } } if (includeAddress) { if (null == message.addressData) { throw new ServletException("address data not included while requested"); } } if (includePhoto) { if (null == message.photoData) { throw new ServletException("photo data not included while requested"); } } IdentityIntegrityService identityIntegrityService = this.identityIntegrityServiceLocator.locateService(); if (null != identityIntegrityService) { if (null == message.rrnCertificate) { throw new ServletException("national registry certificate not included while requested"); } List<X509Certificate> rrnCertificateChain = new LinkedList<X509Certificate>(); rrnCertificateChain.add(message.rrnCertificate); rrnCertificateChain.add(message.rootCaCert); try { identityIntegrityService.checkNationalRegistrationCertificate(rrnCertificateChain); } catch (ExpiredCertificateSecurityException e) { return new FinishedMessage(ErrorCode.CERTIFICATE_EXPIRED); } catch (RevokedCertificateSecurityException e) { return new FinishedMessage(ErrorCode.CERTIFICATE_REVOKED); } catch (TrustCertificateSecurityException e) { return new FinishedMessage(ErrorCode.CERTIFICATE_NOT_TRUSTED); } catch (CertificateSecurityException e) { return new FinishedMessage(ErrorCode.CERTIFICATE); } catch (Exception e) { if ("javax.ejb.EJBException".equals(e.getClass().getName())) { Exception exception; try { Method getCausedByExceptionMethod = e.getClass().getMethod("getCausedByException", new Class[] {}); exception = (Exception) getCausedByExceptionMethod.invoke(e, new Object[] {}); } catch (Exception e2) { LOG.debug("error: " + e.getMessage(), e); throw new SecurityException("error retrieving the root cause: " + e2.getMessage()); } if (exception instanceof ExpiredCertificateSecurityException) { return new FinishedMessage(ErrorCode.CERTIFICATE_EXPIRED); } if (exception instanceof RevokedCertificateSecurityException) { return new FinishedMessage(ErrorCode.CERTIFICATE_REVOKED); } if (exception instanceof TrustCertificateSecurityException) { return new FinishedMessage(ErrorCode.CERTIFICATE_NOT_TRUSTED); } if (exception instanceof CertificateSecurityException) { return new FinishedMessage(ErrorCode.CERTIFICATE); } } throw new SecurityException("error checking the NRN certificate: " + e.getMessage(), e); } PublicKey rrnPublicKey = message.rrnCertificate.getPublicKey(); if (includeIdentity) { if (null == message.identitySignatureData) { throw new ServletException("identity signature data not included while requested"); } verifySignature(message.rrnCertificate.getSigAlgName(), message.identitySignatureData, rrnPublicKey, request, message.identityData); } if (includeAddress) { if (null == message.addressSignatureData) { throw new ServletException("address signature data not included while requested"); } byte[] addressFile = trimRight(message.addressData); verifySignature(message.rrnCertificate.getSigAlgName(), message.addressSignatureData, rrnPublicKey, request, addressFile, message.identitySignatureData); } } if (includeIdentity) { Identity identity = TlvParser.parse(message.identityData, Identity.class); if (false == UserIdentifierUtil.getUserId(message.authnCert).equals(identity.nationalNumber)) { throw new ServletException("national number mismatch"); } session.setAttribute(IdentityDataMessageHandler.IDENTITY_SESSION_ATTRIBUTE, identity); eidData.identity = identity; auditService = this.auditServiceLocator.locateService(); if (null != auditService) { auditService.identified(identity.nationalNumber); } } if (includeAddress) { Address address = TlvParser.parse(message.addressData, Address.class); session.setAttribute(IdentityDataMessageHandler.ADDRESS_SESSION_ATTRIBUTE, address); eidData.address = address; } if (includePhoto) { if (includeIdentity) { byte[] expectedPhotoDigest = eidData.identity.photoDigest; byte[] actualPhotoDigest = digestPhoto(getDigestAlgo(expectedPhotoDigest.length), message.photoData); if (false == Arrays.equals(expectedPhotoDigest, actualPhotoDigest)) { throw new ServletException("photo digest incorrect"); } } session.setAttribute(IdentityDataMessageHandler.PHOTO_SESSION_ATTRIBUTE, message.photoData); eidData.photo = message.photoData; } if (includeCertificates) { if (includeIdentity) { eidData.certs = new EIdCertsData(); eidData.certs.authn = message.authnCert; eidData.certs.ca = message.citizenCaCert; eidData.certs.root = message.rootCaCert; eidData.certs.sign = message.signCert; } session.setAttribute(IdentityDataMessageHandler.AUTHN_CERT_SESSION_ATTRIBUTE, message.authnCert); session.setAttribute(IdentityDataMessageHandler.CA_CERT_SESSION_ATTRIBUTE, message.citizenCaCert); session.setAttribute(IdentityDataMessageHandler.ROOT_CERT_SESSION_ATTRIBTUE, message.rootCaCert); session.setAttribute(IdentityDataMessageHandler.SIGN_CERT_SESSION_ATTRIBUTE, message.signCert); } if (this.includeDataFiles) { session.setAttribute(IdentityDataMessageHandler.EID_DATA_IDENTITY_SESSION_ATTRIBUTE, message.identityData); session.setAttribute(IdentityDataMessageHandler.EID_DATA_ADDRESS_SESSION_ATTRIBUTE, message.addressData); } AuthenticationSignatureService authenticationSignatureService = this.authenticationSignatureServiceLocator .locateService(); if (null != authenticationSignatureService) { List<X509Certificate> authnCertificateChain; if (null != message.authnCert) { authnCertificateChain = new LinkedList<X509Certificate>(); authnCertificateChain.add(message.authnCert); authnCertificateChain.add(message.citizenCaCert); authnCertificateChain.add(message.rootCaCert); } else { authnCertificateChain = null; } AuthenticationSignatureContext authenticationSignatureContext = new AuthenticationSignatureContextImpl( session); PreSignResult preSignResult = authenticationSignatureService.preSign(authnCertificateChain, authenticationSignatureContext); if (null == preSignResult) { return new FinishedMessage(); } boolean logoff = preSignResult.getLogoff(); byte[] computedDigestValue = preSignResult.getDigestInfo().digestValue; String digestAlgo = preSignResult.getDigestInfo().digestAlgo; String authnMessage = preSignResult.getDigestInfo().description; AuthSignRequestMessage authSignRequestMessage = new AuthSignRequestMessage(computedDigestValue, digestAlgo, authnMessage, logoff); return authSignRequestMessage; } return new FinishedMessage(); }
From source file:com.opentrust.spi.pdf.PDFEnvelopedSignature.java
License:Mozilla Public License
/** * Verifies a signature using the sub-filter adbe.x509.rsa_sha1. * @param contentsKey the /Contents key//from w w w .j a v a2 s. c om * @param certsKey the /Cert key * @param provider the provider or <code>null</code> for the default provider */ public PDFEnvelopedSignature(byte[] contentsKey, byte[] certsKey, String provider, AcroFields acroFields, String signatureFieldName) { try { log.debug(Channel.TECH, "Verifying a adbe.x509.rsa_sha1 signature"); this.acroFields = acroFields; this.signatureFieldName = signatureFieldName; this.subFilter = SF_ADBE_X509_RSA_SHA1; this.dictionaryCert = certsKey; X509CertParser cr = new X509CertParser(); cr.engineInit(new ByteArrayInputStream(certsKey)); certs = cr.engineReadAll(); signCert = (X509Certificate) certs.iterator().next(); crls = new ArrayList(); ASN1InputStream in = new ASN1InputStream(new ByteArrayInputStream(contentsKey)); pkcs1SigValue = ((DEROctetString) in.readObject()).getOctets(); Cipher c = Cipher.getInstance("RSA/NONE/PKCS1Padding", BouncyCastleProvider.PROVIDER_NAME); c.init(Cipher.DECRYPT_MODE, signCert); byte[] raw = c.doFinal(pkcs1SigValue); ASN1Sequence in3 = (ASN1Sequence) ASN1Object.fromByteArray(raw); DigestInfo di = DigestInfo.getInstance(in3); dataDigestAlgorithm = di.getAlgorithmId().getAlgorithm().getId(); keyAndParameterAlgorithm = ID_RSA; if (provider == null) sig = Signature.getInstance(getSignatureAlgorithm()); else sig = Signature.getInstance(getSignatureAlgorithm(), provider); sig.initVerify(signCert.getPublicKey()); } catch (Exception e) { throw new ExceptionConverter(e); } }
From source file:eu.europa.esig.dss.cades.signature.CAdESLevelBETSITS101733Test.java
License:Open Source License
@Override protected void onDocumentSigned(byte[] byteArray) { try {/*from w ww. ja va2s .c om*/ CAdESSignature signature = new CAdESSignature(byteArray); assertNotNull(signature.getCmsSignedData()); ASN1InputStream asn1sInput = new ASN1InputStream(byteArray); ASN1Sequence asn1Seq = (ASN1Sequence) asn1sInput.readObject(); logger.info("SEQ : " + asn1Seq.toString()); assertEquals(2, asn1Seq.size()); ASN1ObjectIdentifier oid = ASN1ObjectIdentifier.getInstance(asn1Seq.getObjectAt(0)); assertEquals(PKCSObjectIdentifiers.signedData, oid); logger.info("OID : " + oid.toString()); ASN1TaggedObject taggedObj = DERTaggedObject.getInstance(asn1Seq.getObjectAt(1)); logger.info("TAGGED OBJ : " + taggedObj.toString()); ASN1Primitive object = taggedObj.getObject(); logger.info("OBJ : " + object.toString()); SignedData signedData = SignedData.getInstance(object); logger.info("SIGNED DATA : " + signedData.toString()); ASN1Set digestAlgorithms = signedData.getDigestAlgorithms(); logger.info("DIGEST ALGOS : " + digestAlgorithms.toString()); ContentInfo encapContentInfo = signedData.getEncapContentInfo(); logger.info("ENCAPSULATED CONTENT INFO : " + encapContentInfo.getContentType() + " " + encapContentInfo.getContent()); ASN1Set certificates = signedData.getCertificates(); logger.info("CERTIFICATES (" + certificates.size() + ") : " + certificates); List<X509Certificate> foundCertificates = new ArrayList<X509Certificate>(); for (int i = 0; i < certificates.size(); i++) { ASN1Sequence seqCertif = ASN1Sequence.getInstance(certificates.getObjectAt(i)); logger.info("SEQ cert " + i + " : " + seqCertif); X509CertificateHolder certificateHolder = new X509CertificateHolder(seqCertif.getEncoded()); CertificateToken certificate = DSSASN1Utils.getCertificate(certificateHolder); X509Certificate x509Certificate = certificate.getCertificate(); x509Certificate.checkValidity(); logger.info("Cert " + i + " : " + certificate); foundCertificates.add(x509Certificate); } ASN1Set crLs = signedData.getCRLs(); logger.info("CRLs : " + crLs); ASN1Set signerInfosAsn1 = signedData.getSignerInfos(); logger.info("SIGNER INFO ASN1 : " + signerInfosAsn1.toString()); assertEquals(1, signerInfosAsn1.size()); ASN1Sequence seqSignedInfo = ASN1Sequence.getInstance(signerInfosAsn1.getObjectAt(0)); SignerInfo signedInfo = SignerInfo.getInstance(seqSignedInfo); logger.info("SIGNER INFO : " + signedInfo.toString()); SignerIdentifier sid = signedInfo.getSID(); logger.info("SIGNER IDENTIFIER : " + sid.getId()); IssuerAndSerialNumber issuerAndSerialNumber = IssuerAndSerialNumber.getInstance(signedInfo.getSID()); logger.info("ISSUER AND SN : " + issuerAndSerialNumber.toString()); BigInteger serial = issuerAndSerialNumber.getSerialNumber().getValue(); X509Certificate signerCertificate = null; for (X509Certificate x509Certificate : foundCertificates) { // TODO check issuer name if (serial.equals(x509Certificate.getSerialNumber())) { signerCertificate = x509Certificate; } } assertNotNull(signerCertificate); ASN1OctetString encryptedDigest = signedInfo.getEncryptedDigest(); logger.info("ENCRYPT DIGEST : " + encryptedDigest.toString()); ASN1Sequence seq = ASN1Sequence.getInstance(object); ASN1Integer version = ASN1Integer.getInstance(seq.getObjectAt(0)); logger.info("VERSION : " + version.toString()); ASN1Set digestManualSet = ASN1Set.getInstance(seq.getObjectAt(1)); logger.info("DIGEST SET : " + digestManualSet.toString()); assertEquals(digestAlgorithms, digestManualSet); ASN1Sequence seqDigest = ASN1Sequence.getInstance(digestManualSet.getObjectAt(0)); // assertEquals(1, seqDigest.size()); ASN1ObjectIdentifier oidDigestAlgo = ASN1ObjectIdentifier.getInstance(seqDigest.getObjectAt(0)); assertEquals(new ASN1ObjectIdentifier(DigestAlgorithm.SHA256.getOid()), oidDigestAlgo); ASN1Sequence seqEncapsulatedInfo = ASN1Sequence.getInstance(seq.getObjectAt(2)); logger.info("ENCAPSULATED INFO : " + seqEncapsulatedInfo.toString()); ASN1ObjectIdentifier oidContentType = ASN1ObjectIdentifier .getInstance(seqEncapsulatedInfo.getObjectAt(0)); logger.info("OID CONTENT TYPE : " + oidContentType.toString()); ASN1TaggedObject taggedContent = DERTaggedObject.getInstance(seqEncapsulatedInfo.getObjectAt(1)); ASN1OctetString contentOctetString = ASN1OctetString.getInstance(taggedContent.getObject()); String content = new String(contentOctetString.getOctets()); assertEquals(HELLO_WORLD, content); logger.info("CONTENT : " + content); byte[] digest = DSSUtils.digest(DigestAlgorithm.SHA256, HELLO_WORLD.getBytes()); String encodeHexDigest = Hex.toHexString(digest); logger.info("CONTENT DIGEST COMPUTED : " + encodeHexDigest); ASN1Set authenticatedAttributes = signedInfo.getAuthenticatedAttributes(); logger.info("AUTHENTICATED ATTRIBUTES : " + authenticatedAttributes.toString()); // ASN1Sequence seqAuthAttrib = ASN1Sequence.getInstance(authenticatedAttributes.getObjectAt(0)); logger.info("Nb Auth Attributes : " + authenticatedAttributes.size()); String embeddedDigest = ""; for (int i = 0; i < authenticatedAttributes.size(); i++) { ASN1Sequence authAttrSeq = ASN1Sequence.getInstance(authenticatedAttributes.getObjectAt(i)); logger.info(authAttrSeq.toString()); ASN1ObjectIdentifier attrOid = ASN1ObjectIdentifier.getInstance(authAttrSeq.getObjectAt(0)); if (PKCSObjectIdentifiers.pkcs_9_at_messageDigest.equals(attrOid)) { ASN1Set setMessageDigest = ASN1Set.getInstance(authAttrSeq.getObjectAt(1)); ASN1OctetString asn1ObjString = ASN1OctetString.getInstance(setMessageDigest.getObjectAt(0)); embeddedDigest = Hex.toHexString(asn1ObjString.getOctets()); } } assertEquals(encodeHexDigest, embeddedDigest); ASN1OctetString encryptedInfoOctedString = signedInfo.getEncryptedDigest(); String signatureValue = Hex.toHexString(encryptedInfoOctedString.getOctets()); logger.info("SIGNATURE VALUE : " + signatureValue); Cipher cipher = Cipher.getInstance("RSA"); cipher.init(Cipher.DECRYPT_MODE, signerCertificate); byte[] decrypted = cipher.doFinal(encryptedInfoOctedString.getOctets()); ASN1InputStream inputDecrypted = new ASN1InputStream(decrypted); ASN1Sequence seqDecrypt = (ASN1Sequence) inputDecrypted.readObject(); logger.info("Decrypted : " + seqDecrypt); DigestInfo digestInfo = new DigestInfo(seqDecrypt); assertEquals(oidDigestAlgo, digestInfo.getAlgorithmId().getAlgorithm()); String decryptedDigestEncodeBase64 = Utils.toBase64(digestInfo.getDigest()); logger.info("Decrypted Base64 : " + decryptedDigestEncodeBase64); byte[] encoded = signedInfo.getAuthenticatedAttributes().getEncoded(); MessageDigest messageDigest = MessageDigest.getInstance(DigestAlgorithm.SHA256.getName()); byte[] digestOfAuthenticatedAttributes = messageDigest.digest(encoded); String computedDigestEncodeBase64 = Utils.toBase64(digestOfAuthenticatedAttributes); logger.info("Computed Base64 : " + computedDigestEncodeBase64); assertEquals(decryptedDigestEncodeBase64, computedDigestEncodeBase64); Utils.closeQuietly(asn1sInput); Utils.closeQuietly(inputDecrypted); } catch (Exception e) { logger.error(e.getMessage(), e); fail(e.getMessage()); } }
From source file:eu.europa.esig.dss.cades.signature.CAdESLevelBTest.java
License:Open Source License
@Override protected void onDocumentSigned(byte[] byteArray) { try {/*from w w w . j a v a 2s. co m*/ CAdESSignature signature = new CAdESSignature(byteArray); assertNotNull(signature.getCmsSignedData()); ASN1InputStream asn1sInput = new ASN1InputStream(byteArray); ASN1Sequence asn1Seq = (ASN1Sequence) asn1sInput.readObject(); logger.info("SEQ : " + asn1Seq.toString()); assertEquals(2, asn1Seq.size()); ASN1ObjectIdentifier oid = ASN1ObjectIdentifier.getInstance(asn1Seq.getObjectAt(0)); assertEquals(PKCSObjectIdentifiers.signedData, oid); logger.info("OID : " + oid.toString()); ASN1TaggedObject taggedObj = DERTaggedObject.getInstance(asn1Seq.getObjectAt(1)); logger.info("TAGGED OBJ : " + taggedObj.toString()); ASN1Primitive object = taggedObj.getObject(); logger.info("OBJ : " + object.toString()); SignedData signedData = SignedData.getInstance(object); logger.info("SIGNED DATA : " + signedData.toString()); ASN1Set digestAlgorithms = signedData.getDigestAlgorithms(); logger.info("DIGEST ALGOS : " + digestAlgorithms.toString()); ContentInfo encapContentInfo = signedData.getEncapContentInfo(); logger.info("ENCAPSULATED CONTENT INFO : " + encapContentInfo.getContentType() + " " + encapContentInfo.getContent()); ASN1Set certificates = signedData.getCertificates(); logger.info("CERTIFICATES (" + certificates.size() + ") : " + certificates); List<X509Certificate> foundCertificates = new ArrayList<X509Certificate>(); for (int i = 0; i < certificates.size(); i++) { ASN1Sequence seqCertif = ASN1Sequence.getInstance(certificates.getObjectAt(i)); logger.info("SEQ cert " + i + " : " + seqCertif); X509CertificateHolder certificateHolder = new X509CertificateHolder(seqCertif.getEncoded()); X509Certificate certificate = new JcaX509CertificateConverter() .setProvider(BouncyCastleProvider.PROVIDER_NAME).getCertificate(certificateHolder); certificate.checkValidity(); logger.info("Cert " + i + " : " + certificate); foundCertificates.add(certificate); } ASN1Set crLs = signedData.getCRLs(); logger.info("CRLs : " + crLs); ASN1Set signerInfosAsn1 = signedData.getSignerInfos(); logger.info("SIGNER INFO ASN1 : " + signerInfosAsn1.toString()); assertEquals(1, signerInfosAsn1.size()); ASN1Sequence seqSignedInfo = ASN1Sequence.getInstance(signerInfosAsn1.getObjectAt(0)); SignerInfo signedInfo = SignerInfo.getInstance(seqSignedInfo); logger.info("SIGNER INFO : " + signedInfo.toString()); SignerIdentifier sid = signedInfo.getSID(); logger.info("SIGNER IDENTIFIER : " + sid.getId()); IssuerAndSerialNumber issuerAndSerialNumber = IssuerAndSerialNumber.getInstance(signedInfo.getSID()); logger.info("ISSUER AND SN : " + issuerAndSerialNumber.toString()); BigInteger serial = issuerAndSerialNumber.getSerialNumber().getValue(); X509Certificate signerCertificate = null; for (X509Certificate x509Certificate : foundCertificates) { // TODO check issuer name if (serial.equals(x509Certificate.getSerialNumber())) { signerCertificate = x509Certificate; } } assertNotNull(signerCertificate); ASN1OctetString encryptedDigest = signedInfo.getEncryptedDigest(); logger.info("ENCRYPT DIGEST : " + encryptedDigest.toString()); ASN1Sequence seq = ASN1Sequence.getInstance(object); ASN1Integer version = ASN1Integer.getInstance(seq.getObjectAt(0)); logger.info("VERSION : " + version.toString()); ASN1Set digestManualSet = ASN1Set.getInstance(seq.getObjectAt(1)); logger.info("DIGEST SET : " + digestManualSet.toString()); assertEquals(digestAlgorithms, digestManualSet); ASN1Sequence seqDigest = ASN1Sequence.getInstance(digestManualSet.getObjectAt(0)); // assertEquals(1, seqDigest.size()); ASN1ObjectIdentifier oidDigestAlgo = ASN1ObjectIdentifier.getInstance(seqDigest.getObjectAt(0)); assertEquals(new ASN1ObjectIdentifier(DigestAlgorithm.SHA256.getOid()), oidDigestAlgo); ASN1Sequence seqEncapsulatedInfo = ASN1Sequence.getInstance(seq.getObjectAt(2)); logger.info("ENCAPSULATED INFO : " + seqEncapsulatedInfo.toString()); ASN1ObjectIdentifier oidContentType = ASN1ObjectIdentifier .getInstance(seqEncapsulatedInfo.getObjectAt(0)); logger.info("OID CONTENT TYPE : " + oidContentType.toString()); ASN1TaggedObject taggedContent = DERTaggedObject.getInstance(seqEncapsulatedInfo.getObjectAt(1)); ASN1OctetString contentOctetString = ASN1OctetString.getInstance(taggedContent.getObject()); String content = new String(contentOctetString.getOctets()); assertEquals(HELLO_WORLD, content); logger.info("CONTENT : " + content); byte[] digest = DSSUtils.digest(DigestAlgorithm.SHA256, HELLO_WORLD.getBytes()); String encodeHexDigest = Hex.toHexString(digest); logger.info("CONTENT DIGEST COMPUTED : " + encodeHexDigest); ASN1Set authenticatedAttributes = signedInfo.getAuthenticatedAttributes(); logger.info("AUTHENTICATED ATTRIBUTES : " + authenticatedAttributes.toString()); // ASN1Sequence seqAuthAttrib = ASN1Sequence.getInstance(authenticatedAttributes.getObjectAt(0)); logger.info("Nb Auth Attributes : " + authenticatedAttributes.size()); String embeddedDigest = StringUtils.EMPTY; for (int i = 0; i < authenticatedAttributes.size(); i++) { ASN1Sequence authAttrSeq = ASN1Sequence.getInstance(authenticatedAttributes.getObjectAt(i)); logger.info(authAttrSeq.toString()); ASN1ObjectIdentifier attrOid = ASN1ObjectIdentifier.getInstance(authAttrSeq.getObjectAt(0)); if (PKCSObjectIdentifiers.pkcs_9_at_messageDigest.equals(attrOid)) { ASN1Set setMessageDigest = ASN1Set.getInstance(authAttrSeq.getObjectAt(1)); ASN1OctetString asn1ObjString = ASN1OctetString.getInstance(setMessageDigest.getObjectAt(0)); embeddedDigest = Hex.toHexString(asn1ObjString.getOctets()); } } assertEquals(encodeHexDigest, embeddedDigest); ASN1OctetString encryptedInfoOctedString = signedInfo.getEncryptedDigest(); String signatureValue = Hex.toHexString(encryptedInfoOctedString.getOctets()); logger.info("SIGNATURE VALUE : " + signatureValue); Cipher cipher = Cipher.getInstance("RSA"); cipher.init(Cipher.DECRYPT_MODE, signerCertificate); byte[] decrypted = cipher.doFinal(encryptedInfoOctedString.getOctets()); ASN1InputStream inputDecrypted = new ASN1InputStream(decrypted); ASN1Sequence seqDecrypt = (ASN1Sequence) inputDecrypted.readObject(); logger.info("Decrypted : " + seqDecrypt); DigestInfo digestInfo = new DigestInfo(seqDecrypt); assertEquals(oidDigestAlgo, digestInfo.getAlgorithmId().getAlgorithm()); String decryptedDigestEncodeBase64 = Base64.encodeBase64String(digestInfo.getDigest()); logger.info("Decrypted Base64 : " + decryptedDigestEncodeBase64); byte[] encoded = signedInfo.getAuthenticatedAttributes().getEncoded(); MessageDigest messageDigest = MessageDigest.getInstance(DigestAlgorithm.SHA256.getName()); byte[] digestOfAuthenticatedAttributes = messageDigest.digest(encoded); String computedDigestEncodeBase64 = Base64.encodeBase64String(digestOfAuthenticatedAttributes); logger.info("Computed Base64 : " + computedDigestEncodeBase64); assertEquals(decryptedDigestEncodeBase64, computedDigestEncodeBase64); IOUtils.closeQuietly(asn1sInput); IOUtils.closeQuietly(inputDecrypted); } catch (Exception e) { logger.error(e.getMessage(), e); fail(e.getMessage()); } }
From source file:eu.europa.esig.dss.pades.InfiniteLoopDSS621Test.java
License:Open Source License
/** * These signatures are invalid because of non ordered signed attributes *//*w w w. jav a 2s . c o m*/ @Test public void manualTest() throws Exception { File pdfFile = new File(FILE_PATH); FileInputStream fis = new FileInputStream(pdfFile); byte[] pdfBytes = IOUtils.toByteArray(fis); PDDocument document = PDDocument.load(pdfFile); List<PDSignature> signatures = document.getSignatureDictionaries(); assertEquals(6, signatures.size()); int idx = 0; for (PDSignature pdSignature : signatures) { byte[] contents = pdSignature.getContents(pdfBytes); byte[] signedContent = pdSignature.getSignedContent(pdfBytes); logger.info("Byte range : " + Arrays.toString(pdSignature.getByteRange())); IOUtils.write(contents, new FileOutputStream("target/sig" + (idx++) + ".p7s")); ASN1InputStream asn1sInput = new ASN1InputStream(contents); ASN1Sequence asn1Seq = (ASN1Sequence) asn1sInput.readObject(); logger.info("SEQ : " + asn1Seq.toString()); ASN1ObjectIdentifier oid = ASN1ObjectIdentifier.getInstance(asn1Seq.getObjectAt(0)); assertEquals(PKCSObjectIdentifiers.signedData, oid); SignedData signedData = SignedData .getInstance(DERTaggedObject.getInstance(asn1Seq.getObjectAt(1)).getObject()); ASN1Set digestAlgorithmSet = signedData.getDigestAlgorithms(); ASN1ObjectIdentifier oidDigestAlgo = ASN1ObjectIdentifier .getInstance(ASN1Sequence.getInstance(digestAlgorithmSet.getObjectAt(0)).getObjectAt(0)); DigestAlgorithm digestAlgorithm = DigestAlgorithm.forOID(oidDigestAlgo.getId()); logger.info("DIGEST ALGO : " + digestAlgorithm); ContentInfo encapContentInfo = signedData.getEncapContentInfo(); ASN1ObjectIdentifier contentTypeOID = encapContentInfo.getContentType(); logger.info("ENCAPSULATED CONTENT INFO TYPE : " + contentTypeOID); if (!PKCSObjectIdentifiers.id_ct_TSTInfo.equals(contentTypeOID)) { // If not timestamp assertEquals(PKCSObjectIdentifiers.data, contentTypeOID); ASN1Encodable content = encapContentInfo.getContent(); logger.info("ENCAPSULATED CONTENT INFO CONTENT : " + content); assertNull(content); List<X509Certificate> certificates = extractCertificates(signedData); ASN1Set signerInfosAsn1 = signedData.getSignerInfos(); logger.info("SIGNER INFO ASN1 : " + signerInfosAsn1.toString()); SignerInfo signedInfo = SignerInfo .getInstance(ASN1Sequence.getInstance(signerInfosAsn1.getObjectAt(0))); ASN1Set authenticatedAttributeSet = signedInfo.getAuthenticatedAttributes(); logger.info("AUTHENTICATED ATTR : " + authenticatedAttributeSet); Attribute attributeDigest = null; for (int i = 0; i < authenticatedAttributeSet.size(); i++) { Attribute attribute = Attribute.getInstance(authenticatedAttributeSet.getObjectAt(i)); if (PKCSObjectIdentifiers.pkcs_9_at_messageDigest.equals(attribute.getAttrType())) { attributeDigest = attribute; break; } } assertNotNull(attributeDigest); ASN1OctetString asn1ObjString = ASN1OctetString .getInstance(attributeDigest.getAttrValues().getObjectAt(0)); String embeddedDigest = Base64.encodeBase64String(asn1ObjString.getOctets()); logger.info("MESSAGE DIGEST : " + embeddedDigest); byte[] digestSignedContent = DSSUtils.digest(digestAlgorithm, signedContent); String computedDigestSignedContentEncodeBase64 = Base64.encodeBase64String(digestSignedContent); logger.info("COMPUTED DIGEST SIGNED CONTENT BASE64 : " + computedDigestSignedContentEncodeBase64); assertEquals(embeddedDigest, computedDigestSignedContentEncodeBase64); SignerIdentifier sid = signedInfo.getSID(); logger.info("SIGNER IDENTIFIER : " + sid.getId()); IssuerAndSerialNumber issuerAndSerialNumber = IssuerAndSerialNumber .getInstance(signedInfo.getSID()); ASN1Integer signerSerialNumber = issuerAndSerialNumber.getSerialNumber(); logger.info("ISSUER AND SN : " + issuerAndSerialNumber.getName() + " " + signerSerialNumber); BigInteger serial = issuerAndSerialNumber.getSerialNumber().getValue(); X509Certificate signerCertificate = null; for (X509Certificate x509Certificate : certificates) { if (serial.equals(x509Certificate.getSerialNumber())) { signerCertificate = x509Certificate; } } assertNotNull(signerCertificate); String algorithm = signerCertificate.getPublicKey().getAlgorithm(); EncryptionAlgorithm encryptionAlgorithm = EncryptionAlgorithm.forName(algorithm); ASN1OctetString encryptedInfoOctedString = signedInfo.getEncryptedDigest(); String signatureValue = Hex.toHexString(encryptedInfoOctedString.getOctets()); logger.info("SIGNATURE VALUE : " + signatureValue); Cipher cipher = Cipher.getInstance(encryptionAlgorithm.getName()); cipher.init(Cipher.DECRYPT_MODE, signerCertificate); byte[] decrypted = cipher.doFinal(encryptedInfoOctedString.getOctets()); ASN1InputStream inputDecrypted = new ASN1InputStream(decrypted); ASN1Sequence seqDecrypt = (ASN1Sequence) inputDecrypted.readObject(); logger.info("DECRYPTED : " + seqDecrypt); DigestInfo digestInfo = new DigestInfo(seqDecrypt); assertEquals(oidDigestAlgo, digestInfo.getAlgorithmId().getAlgorithm()); String decryptedDigestEncodeBase64 = Base64.encodeBase64String(digestInfo.getDigest()); logger.info("DECRYPTED BASE64 : " + decryptedDigestEncodeBase64); byte[] encoded = authenticatedAttributeSet.getEncoded(); byte[] digest = DSSUtils.digest(digestAlgorithm, encoded); String computedDigestFromSignatureEncodeBase64 = Base64.encodeBase64String(digest); logger.info("COMPUTED DIGEST FROM SIGNATURE BASE64 : " + computedDigestFromSignatureEncodeBase64); assertEquals(decryptedDigestEncodeBase64, computedDigestFromSignatureEncodeBase64); IOUtils.closeQuietly(inputDecrypted); } IOUtils.closeQuietly(asn1sInput); } IOUtils.closeQuietly(fis); document.close(); }
From source file:eu.europa.esig.dss.pades.signature.PAdESLevelBTest.java
License:Open Source License
@Override protected void onDocumentSigned(byte[] byteArray) { try {/*from w w w .ja va 2 s .co m*/ InputStream inputStream = new ByteArrayInputStream(byteArray); PDDocument document = PDDocument.load(inputStream); List<PDSignature> signatures = document.getSignatureDictionaries(); assertEquals(1, signatures.size()); for (PDSignature pdSignature : signatures) { byte[] contents = pdSignature.getContents(byteArray); byte[] signedContent = pdSignature.getSignedContent(byteArray); logger.info("Byte range : " + Arrays.toString(pdSignature.getByteRange())); // IOUtils.write(contents, new FileOutputStream("sig.p7s")); ASN1InputStream asn1sInput = new ASN1InputStream(contents); ASN1Sequence asn1Seq = (ASN1Sequence) asn1sInput.readObject(); logger.info("SEQ : " + asn1Seq.toString()); ASN1ObjectIdentifier oid = ASN1ObjectIdentifier.getInstance(asn1Seq.getObjectAt(0)); assertEquals(PKCSObjectIdentifiers.signedData, oid); SignedData signedData = SignedData .getInstance(DERTaggedObject.getInstance(asn1Seq.getObjectAt(1)).getObject()); ASN1Set digestAlgorithmSet = signedData.getDigestAlgorithms(); ASN1ObjectIdentifier oidDigestAlgo = ASN1ObjectIdentifier .getInstance(ASN1Sequence.getInstance(digestAlgorithmSet.getObjectAt(0)).getObjectAt(0)); DigestAlgorithm digestAlgorithm = DigestAlgorithm.forOID(oidDigestAlgo.getId()); logger.info("DIGEST ALGO : " + digestAlgorithm); ContentInfo encapContentInfo = signedData.getEncapContentInfo(); ASN1ObjectIdentifier contentTypeOID = encapContentInfo.getContentType(); logger.info("ENCAPSULATED CONTENT INFO TYPE : " + contentTypeOID); assertEquals(PKCSObjectIdentifiers.data, contentTypeOID); ASN1Encodable content = encapContentInfo.getContent(); logger.info("ENCAPSULATED CONTENT INFO CONTENT : " + content); assertNull(content); List<X509Certificate> certificates = extractCertificates(signedData); ASN1Set signerInfosAsn1 = signedData.getSignerInfos(); logger.info("SIGNER INFO ASN1 : " + signerInfosAsn1.toString()); SignerInfo signedInfo = SignerInfo .getInstance(ASN1Sequence.getInstance(signerInfosAsn1.getObjectAt(0))); ASN1Set authenticatedAttributeSet = signedInfo.getAuthenticatedAttributes(); logger.info("AUTHENTICATED ATTR : " + authenticatedAttributeSet); List<ASN1ObjectIdentifier> attributeOids = new ArrayList<ASN1ObjectIdentifier>(); int previousSize = 0; for (int i = 0; i < authenticatedAttributeSet.size(); i++) { Attribute attribute = Attribute.getInstance(authenticatedAttributeSet.getObjectAt(i)); ASN1ObjectIdentifier attrTypeOid = attribute.getAttrType(); attributeOids.add(attrTypeOid); int size = attrTypeOid.getEncoded().length + attribute.getEncoded().length; assertTrue(size >= previousSize); previousSize = size; } logger.info("List of OID for Auth Attrb : " + attributeOids); Attribute attributeDigest = Attribute.getInstance(authenticatedAttributeSet.getObjectAt(1)); assertEquals(PKCSObjectIdentifiers.pkcs_9_at_messageDigest, attributeDigest.getAttrType()); ASN1OctetString asn1ObjString = ASN1OctetString .getInstance(attributeDigest.getAttrValues().getObjectAt(0)); String embeddedDigest = Base64.encodeBase64String(asn1ObjString.getOctets()); logger.info("MESSAGE DIGEST : " + embeddedDigest); byte[] digestSignedContent = DSSUtils.digest(digestAlgorithm, signedContent); String computedDigestSignedContentEncodeBase64 = Base64.encodeBase64String(digestSignedContent); logger.info("COMPUTED DIGEST SIGNED CONTENT BASE64 : " + computedDigestSignedContentEncodeBase64); assertEquals(embeddedDigest, computedDigestSignedContentEncodeBase64); SignerIdentifier sid = signedInfo.getSID(); logger.info("SIGNER IDENTIFIER : " + sid.getId()); IssuerAndSerialNumber issuerAndSerialNumber = IssuerAndSerialNumber .getInstance(signedInfo.getSID()); ASN1Integer signerSerialNumber = issuerAndSerialNumber.getSerialNumber(); logger.info("ISSUER AND SN : " + issuerAndSerialNumber.getName() + " " + signerSerialNumber); BigInteger serial = issuerAndSerialNumber.getSerialNumber().getValue(); X509Certificate signerCertificate = null; for (X509Certificate x509Certificate : certificates) { if (serial.equals(x509Certificate.getSerialNumber())) { signerCertificate = x509Certificate; } } assertNotNull(signerCertificate); String algorithm = signerCertificate.getPublicKey().getAlgorithm(); EncryptionAlgorithm encryptionAlgorithm = EncryptionAlgorithm.forName(algorithm); ASN1OctetString encryptedInfoOctedString = signedInfo.getEncryptedDigest(); String signatureValue = Hex.toHexString(encryptedInfoOctedString.getOctets()); logger.info("SIGNATURE VALUE : " + signatureValue); Cipher cipher = Cipher.getInstance(encryptionAlgorithm.getName()); cipher.init(Cipher.DECRYPT_MODE, signerCertificate); byte[] decrypted = cipher.doFinal(encryptedInfoOctedString.getOctets()); ASN1InputStream inputDecrypted = new ASN1InputStream(decrypted); ASN1Sequence seqDecrypt = (ASN1Sequence) inputDecrypted.readObject(); logger.info("DECRYPTED : " + seqDecrypt); DigestInfo digestInfo = new DigestInfo(seqDecrypt); assertEquals(oidDigestAlgo, digestInfo.getAlgorithmId().getAlgorithm()); String decryptedDigestEncodeBase64 = Base64.encodeBase64String(digestInfo.getDigest()); logger.info("DECRYPTED BASE64 : " + decryptedDigestEncodeBase64); byte[] encoded = authenticatedAttributeSet.getEncoded(); byte[] digest = DSSUtils.digest(digestAlgorithm, encoded); String computedDigestFromSignatureEncodeBase64 = Base64.encodeBase64String(digest); logger.info("COMPUTED DIGEST FROM SIGNATURE BASE64 : " + computedDigestFromSignatureEncodeBase64); assertEquals(decryptedDigestEncodeBase64, computedDigestFromSignatureEncodeBase64); IOUtils.closeQuietly(inputDecrypted); IOUtils.closeQuietly(asn1sInput); } IOUtils.closeQuietly(inputStream); document.close(); } catch (Exception e) { logger.error(e.getMessage(), e); fail(e.getMessage()); } }
From source file:org.ccnx.ccn.impl.security.crypto.MerklePath.java
License:Open Source License
/** * Determine whether a given DigestInfo contains a MerklePath * @param info the DigestInfo/* ww w .ja va 2 s .com*/ * @return true if this is a MerklePath, false otherwise */ public static boolean isMerklePath(DigestInfo info) { AlgorithmIdentifier digestAlg = new AlgorithmIdentifier( OIDLookup.getDigestOID(CCNMerkleTree.DEFAULT_MHT_ALGORITHM)); return (info.getAlgorithmId().equals(digestAlg)); }
From source file:org.ccnx.ccn.protocol.Signature.java
License:Open Source License
/** * Compute the content proxy for a given node. This should likely move somewhere else * @param nodeContent the content stored at this node * @param isDigest is the content already digested * @return the proxy digest (for example, the computed root of the Merkle hash tree) for this node * @throws CertificateEncodingException if we cannot decode the witness *//*from w ww . j a va 2 s . c o m*/ public byte[] computeProxy(byte[] nodeContent, boolean isDigest) throws CertificateEncodingException { if (null == witness()) return null; DigestInfo info = CCNDigestHelper.digestDecoder(witness()); byte[] proxy = null; if (MerklePath.isMerklePath(info)) { MerklePath mp = new MerklePath(info.getDigest()); proxy = mp.root(nodeContent, isDigest); } else { Log.warning("Unexpected witness type: " + info.getAlgorithmId().toString()); } return proxy; }
From source file:org.ndnx.ndn.impl.security.crypto.MerklePath.java
License:Open Source License
/** * Determine whether a given DigestInfo contains a MerklePath * @param info the DigestInfo// w w w. j a va2 s . com * @return true if this is a MerklePath, false otherwise */ public static boolean isMerklePath(DigestInfo info) { AlgorithmIdentifier digestAlg = new AlgorithmIdentifier( OIDLookup.getDigestOID(NDNMerkleTree.DEFAULT_MHT_ALGORITHM)); return (info.getAlgorithmId().equals(digestAlg)); }
From source file:org.ndnx.ndn.protocol.Signature.java
License:Open Source License
/** * Compute the content proxy for a given node. This should likely move somewhere else * @param nodeContent the content stored at this node * @param isDigest is the content already digested * @return the proxy digest (for example, the computed root of the Merkle hash tree) for this node * @throws CertificateEncodingException if we cannot decode the witness *///from www . j ava 2 s. c om public byte[] computeProxy(byte[] nodeContent, boolean isDigest) throws CertificateEncodingException { if (null == witness()) return null; DigestInfo info = NDNDigestHelper.digestDecoder(witness()); byte[] proxy = null; if (MerklePath.isMerklePath(info)) { MerklePath mp = new MerklePath(info.getDigest()); proxy = mp.root(nodeContent, isDigest); } else { Log.warning("Unexpected witness type: " + info.getAlgorithmId().toString()); } return proxy; }