List of usage examples for org.bouncycastle.asn1 ASN1Set toString
public String toString()
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. java 2 s. c o 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()); 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 ww w. ja v a2 s .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()); 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 . j av a2s .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 {// 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()); } }