Examples with Attribute org.bouncycastle.asn1.cms.Attribute used on opensource projects

Example 6 with Attribute

use of org.bouncycastle.asn1.cms.Attribute in project robovm by robovm.

the class SignedData method calculateVersion.

// RFC3852, section 5.1:
// IF ((certificates is present) AND
//    (any certificates with a type of other are present)) OR
//    ((crls is present) AND
//    (any crls with a type of other are present))
// THEN version MUST be 5
// ELSE
//    IF (certificates is present) AND
//       (any version 2 attribute certificates are present)
//    THEN version MUST be 4
//    ELSE
//       IF ((certificates is present) AND
//          (any version 1 attribute certificates are present)) OR
//          (any SignerInfo structures are version 3) OR
//          (encapContentInfo eContentType is other than id-data)
//       THEN version MUST be 3
//       ELSE version MUST be 1
//
private ASN1Integer calculateVersion(ASN1ObjectIdentifier contentOid, ASN1Set certs, ASN1Set crls, ASN1Set signerInfs) {
    boolean otherCert = false;
    boolean otherCrl = false;
    boolean attrCertV1Found = false;
    boolean attrCertV2Found = false;
    if (certs != null) {
        for (Enumeration en = certs.getObjects(); en.hasMoreElements(); ) {
            Object obj = en.nextElement();
            if (obj instanceof ASN1TaggedObject) {
                ASN1TaggedObject tagged = ASN1TaggedObject.getInstance(obj);
                if (tagged.getTagNo() == 1) {
                    attrCertV1Found = true;
                } else if (tagged.getTagNo() == 2) {
                    attrCertV2Found = true;
                } else if (tagged.getTagNo() == 3) {
                    otherCert = true;
                }
            }
        }
    }
    if (otherCert) {
        return new ASN1Integer(5);
    }
    if (// no need to check if otherCert is true
    crls != null) {
        for (Enumeration en = crls.getObjects(); en.hasMoreElements(); ) {
            Object obj = en.nextElement();
            if (obj instanceof ASN1TaggedObject) {
                otherCrl = true;
            }
        }
    }
    if (otherCrl) {
        return VERSION_5;
    }
    if (attrCertV2Found) {
        return VERSION_4;
    }
    if (attrCertV1Found) {
        return VERSION_3;
    }
    if (checkForVersion3(signerInfs)) {
        return VERSION_3;
    }
    if (!CMSObjectIdentifiers.data.equals(contentOid)) {
        return VERSION_3;
    }
    return VERSION_1;
}

Example 7 with Attribute

use of org.bouncycastle.asn1.cms.Attribute in project robovm by robovm.

the class RFC3280CertPathUtilities method processCRLF.

/**
     * Obtain and validate the certification path for the complete CRL issuer.
     * If a key usage extension is present in the CRL issuer's certificate,
     * verify that the cRLSign bit is set.
     *
     * @param crl                CRL which contains revocation information for the certificate
     *                           <code>cert</code>.
     * @param cert               The attribute certificate or certificate to check if it is
     *                           revoked.
     * @param defaultCRLSignCert The issuer certificate of the certificate <code>cert</code>.
     * @param defaultCRLSignKey  The public key of the issuer certificate
     *                           <code>defaultCRLSignCert</code>.
     * @param paramsPKIX         paramsPKIX PKIX parameters.
     * @param certPathCerts      The certificates on the certification path.
     * @return A <code>Set</code> with all keys of possible CRL issuer
     *         certificates.
     * @throws AnnotatedException if the CRL is not valid or the status cannot be checked or
     *                            some error occurs.
     */
protected static Set processCRLF(X509CRL crl, Object cert, X509Certificate defaultCRLSignCert, PublicKey defaultCRLSignKey, ExtendedPKIXParameters paramsPKIX, List certPathCerts) throws AnnotatedException {
    // (f)
    // get issuer from CRL
    X509CertStoreSelector selector = new X509CertStoreSelector();
    try {
        byte[] issuerPrincipal = CertPathValidatorUtilities.getIssuerPrincipal(crl).getEncoded();
        selector.setSubject(issuerPrincipal);
    } catch (IOException e) {
        throw new AnnotatedException("Subject criteria for certificate selector to find issuer certificate for CRL could not be set.", e);
    }
    // get CRL signing certs
    Collection coll;
    try {
        coll = CertPathValidatorUtilities.findCertificates(selector, paramsPKIX.getStores());
        coll.addAll(CertPathValidatorUtilities.findCertificates(selector, paramsPKIX.getAdditionalStores()));
        coll.addAll(CertPathValidatorUtilities.findCertificates(selector, paramsPKIX.getCertStores()));
    } catch (AnnotatedException e) {
        throw new AnnotatedException("Issuer certificate for CRL cannot be searched.", e);
    }
    coll.add(defaultCRLSignCert);
    Iterator cert_it = coll.iterator();
    List validCerts = new ArrayList();
    List validKeys = new ArrayList();
    while (cert_it.hasNext()) {
        X509Certificate signingCert = (X509Certificate) cert_it.next();
        /*
             * CA of the certificate, for which this CRL is checked, has also
             * signed CRL, so skip the path validation, because is already done
             */
        if (signingCert.equals(defaultCRLSignCert)) {
            validCerts.add(signingCert);
            validKeys.add(defaultCRLSignKey);
            continue;
        }
        try {
            CertPathBuilder builder = CertPathBuilder.getInstance("PKIX", BouncyCastleProvider.PROVIDER_NAME);
            selector = new X509CertStoreSelector();
            selector.setCertificate(signingCert);
            ExtendedPKIXParameters temp = (ExtendedPKIXParameters) paramsPKIX.clone();
            temp.setTargetCertConstraints(selector);
            ExtendedPKIXBuilderParameters params = (ExtendedPKIXBuilderParameters) ExtendedPKIXBuilderParameters.getInstance(temp);
            /*
                 * if signingCert is placed not higher on the cert path a
                 * dependency loop results. CRL for cert is checked, but
                 * signingCert is needed for checking the CRL which is dependent
                 * on checking cert because it is higher in the cert path and so
                 * signing signingCert transitively. so, revocation is disabled,
                 * forgery attacks of the CRL are detected in this outer loop
                 * for all other it must be enabled to prevent forgery attacks
                 */
            if (certPathCerts.contains(signingCert)) {
                params.setRevocationEnabled(false);
            } else {
                params.setRevocationEnabled(true);
            }
            List certs = builder.build(params).getCertPath().getCertificates();
            validCerts.add(signingCert);
            validKeys.add(CertPathValidatorUtilities.getNextWorkingKey(certs, 0));
        } catch (CertPathBuilderException e) {
            throw new AnnotatedException("Internal error.", e);
        } catch (CertPathValidatorException e) {
            throw new AnnotatedException("Public key of issuer certificate of CRL could not be retrieved.", e);
        } catch (Exception e) {
            throw new RuntimeException(e.getMessage());
        }
    }
    Set checkKeys = new HashSet();
    AnnotatedException lastException = null;
    for (int i = 0; i < validCerts.size(); i++) {
        X509Certificate signCert = (X509Certificate) validCerts.get(i);
        boolean[] keyusage = signCert.getKeyUsage();
        if (keyusage != null && (keyusage.length < 7 || !keyusage[CRL_SIGN])) {
            lastException = new AnnotatedException("Issuer certificate key usage extension does not permit CRL signing.");
        } else {
            checkKeys.add(validKeys.get(i));
        }
    }
    if (checkKeys.isEmpty() && lastException == null) {
        throw new AnnotatedException("Cannot find a valid issuer certificate.");
    }
    if (checkKeys.isEmpty() && lastException != null) {
        throw lastException;
    }
    return checkKeys;
}

Example 8 with Attribute

use of org.bouncycastle.asn1.cms.Attribute in project robovm by robovm.

the class SignerInformation method doVerify.

private boolean doVerify(SignerInformationVerifier verifier) throws CMSException {
    String encName = CMSSignedHelper.INSTANCE.getEncryptionAlgName(this.getEncryptionAlgOID());
    ContentVerifier contentVerifier;
    try {
        contentVerifier = verifier.getContentVerifier(encryptionAlgorithm, info.getDigestAlgorithm());
    } catch (OperatorCreationException e) {
        throw new CMSException("can't create content verifier: " + e.getMessage(), e);
    }
    try {
        OutputStream sigOut = contentVerifier.getOutputStream();
        if (resultDigest == null) {
            DigestCalculator calc = verifier.getDigestCalculator(this.getDigestAlgorithmID());
            if (content != null) {
                OutputStream digOut = calc.getOutputStream();
                if (signedAttributeSet == null) {
                    if (contentVerifier instanceof RawContentVerifier) {
                        content.write(digOut);
                    } else {
                        OutputStream cOut = new TeeOutputStream(digOut, sigOut);
                        content.write(cOut);
                        cOut.close();
                    }
                } else {
                    content.write(digOut);
                    sigOut.write(this.getEncodedSignedAttributes());
                }
                digOut.close();
            } else if (signedAttributeSet != null) {
                sigOut.write(this.getEncodedSignedAttributes());
            } else {
                // TODO Get rid of this exception and just treat content==null as empty not missing?
                throw new CMSException("data not encapsulated in signature - use detached constructor.");
            }
            resultDigest = calc.getDigest();
        } else {
            if (signedAttributeSet == null) {
                if (content != null) {
                    content.write(sigOut);
                }
            } else {
                sigOut.write(this.getEncodedSignedAttributes());
            }
        }
        sigOut.close();
    } catch (IOException e) {
        throw new CMSException("can't process mime object to create signature.", e);
    } catch (OperatorCreationException e) {
        throw new CMSException("can't create digest calculator: " + e.getMessage(), e);
    }
    // RFC 3852 11.1 Check the content-type attribute is correct
    {
        ASN1Primitive validContentType = getSingleValuedSignedAttribute(CMSAttributes.contentType, "content-type");
        if (validContentType == null) {
            if (!isCounterSignature && signedAttributeSet != null) {
                throw new CMSException("The content-type attribute type MUST be present whenever signed attributes are present in signed-data");
            }
        } else {
            if (isCounterSignature) {
                throw new CMSException("[For counter signatures,] the signedAttributes field MUST NOT contain a content-type attribute");
            }
            if (!(validContentType instanceof ASN1ObjectIdentifier)) {
                throw new CMSException("content-type attribute value not of ASN.1 type 'OBJECT IDENTIFIER'");
            }
            ASN1ObjectIdentifier signedContentType = (ASN1ObjectIdentifier) validContentType;
            if (!signedContentType.equals(contentType)) {
                throw new CMSException("content-type attribute value does not match eContentType");
            }
        }
    }
    // RFC 3852 11.2 Check the message-digest attribute is correct
    {
        ASN1Primitive validMessageDigest = getSingleValuedSignedAttribute(CMSAttributes.messageDigest, "message-digest");
        if (validMessageDigest == null) {
            if (signedAttributeSet != null) {
                throw new CMSException("the message-digest signed attribute type MUST be present when there are any signed attributes present");
            }
        } else {
            if (!(validMessageDigest instanceof ASN1OctetString)) {
                throw new CMSException("message-digest attribute value not of ASN.1 type 'OCTET STRING'");
            }
            ASN1OctetString signedMessageDigest = (ASN1OctetString) validMessageDigest;
            if (!Arrays.constantTimeAreEqual(resultDigest, signedMessageDigest.getOctets())) {
                throw new CMSSignerDigestMismatchException("message-digest attribute value does not match calculated value");
            }
        }
    }
    // RFC 3852 11.4 Validate countersignature attribute(s)
    {
        AttributeTable signedAttrTable = this.getSignedAttributes();
        if (signedAttrTable != null && signedAttrTable.getAll(CMSAttributes.counterSignature).size() > 0) {
            throw new CMSException("A countersignature attribute MUST NOT be a signed attribute");
        }
        AttributeTable unsignedAttrTable = this.getUnsignedAttributes();
        if (unsignedAttrTable != null) {
            ASN1EncodableVector csAttrs = unsignedAttrTable.getAll(CMSAttributes.counterSignature);
            for (int i = 0; i < csAttrs.size(); ++i) {
                Attribute csAttr = (Attribute) csAttrs.get(i);
                if (csAttr.getAttrValues().size() < 1) {
                    throw new CMSException("A countersignature attribute MUST contain at least one AttributeValue");
                }
            // Note: We don't recursively validate the countersignature value
            }
        }
    }
    try {
        if (signedAttributeSet == null && resultDigest != null) {
            if (contentVerifier instanceof RawContentVerifier) {
                RawContentVerifier rawVerifier = (RawContentVerifier) contentVerifier;
                if (encName.equals("RSA")) {
                    DigestInfo digInfo = new DigestInfo(new AlgorithmIdentifier(digestAlgorithm.getAlgorithm(), DERNull.INSTANCE), resultDigest);
                    return rawVerifier.verify(digInfo.getEncoded(ASN1Encoding.DER), this.getSignature());
                }
                return rawVerifier.verify(resultDigest, this.getSignature());
            }
        }
        return contentVerifier.verify(this.getSignature());
    } catch (IOException e) {
        throw new CMSException("can't process mime object to create signature.", e);
    }
}

Example 9 with Attribute

use of org.bouncycastle.asn1.cms.Attribute in project robovm by robovm.

the class SignerInformation method addCounterSigners.

/**
     * Return a signer information object with passed in SignerInformationStore representing counter
     * signatures attached as an unsigned attribute.
     *
     * @param signerInformation the signerInfo to be used as the basis.
     * @param counterSigners signer info objects carrying counter signature.
     * @return a copy of the original SignerInformationObject with the changed attributes.
     */
public static SignerInformation addCounterSigners(SignerInformation signerInformation, SignerInformationStore counterSigners) {
    // TODO Perform checks from RFC 3852 11.4
    SignerInfo sInfo = signerInformation.info;
    AttributeTable unsignedAttr = signerInformation.getUnsignedAttributes();
    ASN1EncodableVector v;
    if (unsignedAttr != null) {
        v = unsignedAttr.toASN1EncodableVector();
    } else {
        v = new ASN1EncodableVector();
    }
    ASN1EncodableVector sigs = new ASN1EncodableVector();
    for (Iterator it = counterSigners.getSigners().iterator(); it.hasNext(); ) {
        sigs.add(((SignerInformation) it.next()).toASN1Structure());
    }
    v.add(new Attribute(CMSAttributes.counterSignature, new DERSet(sigs)));
    return new SignerInformation(new SignerInfo(sInfo.getSID(), sInfo.getDigestAlgorithm(), sInfo.getAuthenticatedAttributes(), sInfo.getDigestEncryptionAlgorithm(), sInfo.getEncryptedDigest(), new DERSet(v)), signerInformation.contentType, signerInformation.content, null);
}

Example 10 with Attribute

use of org.bouncycastle.asn1.cms.Attribute in project robovm by robovm.

the class X509AttributeCertificateHolder method isSignatureValid.

/**
     * Validate the signature on the attribute certificate in this holder.
     *
     * @param verifierProvider a ContentVerifierProvider that can generate a verifier for the signature.
     * @return true if the signature is valid, false otherwise.
     * @throws CertException if the signature cannot be processed or is inappropriate.
     */
public boolean isSignatureValid(ContentVerifierProvider verifierProvider) throws CertException {
    AttributeCertificateInfo acinfo = attrCert.getAcinfo();
    if (!CertUtils.isAlgIdEqual(acinfo.getSignature(), attrCert.getSignatureAlgorithm())) {
        throw new CertException("signature invalid - algorithm identifier mismatch");
    }
    ContentVerifier verifier;
    try {
        verifier = verifierProvider.get((acinfo.getSignature()));
        OutputStream sOut = verifier.getOutputStream();
        DEROutputStream dOut = new DEROutputStream(sOut);
        dOut.writeObject(acinfo);
        sOut.close();
    } catch (Exception e) {
        throw new CertException("unable to process signature: " + e.getMessage(), e);
    }
    return verifier.verify(attrCert.getSignatureValue().getBytes());
}