Examples with X500Name org.bouncycastle.asn1.x500.X500Name used on opensource projects

Example 36 with X500Name

use of org.bouncycastle.asn1.x500.X500Name in project jdk8u_jdk by JetBrains.

the class Builder method targetDistance.

/**
     * Determine how close a given certificate gets you toward
     * a given target.
     *
     * @param constraints Current NameConstraints; if null,
     *        then caller must verify NameConstraints
     *        independently, realizing that this certificate
     *        may not actually lead to the target at all.
     * @param cert Candidate certificate for chain
     * @param target GeneralNameInterface name of target
     * @return distance from this certificate to target:
     * <ul>
     * <li>-1 means certificate could be CA for target, but
     *     there are no NameConstraints limiting how close
     * <li> 0 means certificate subject or subjectAltName
     *      matches target
     * <li> 1 means certificate is permitted to be CA for
     *      target.
     * <li> 2 means certificate is permitted to be CA for
     *      parent of target.
     * <li>&gt;0 in general, means certificate is permitted
     *     to be a CA for this distance higher in the naming
     *     hierarchy than the target, plus 1.
     * </ul>
     * <p>Note that the subject and/or subjectAltName of the
     * candidate cert does not have to be an ancestor of the
     * target in order to be a CA that can issue a certificate to
     * the target. In these cases, the target distance is calculated
     * by inspecting the NameConstraints extension in the candidate
     * certificate. For example, suppose the target is an X.500 DN with
     * a value of "CN=mullan,OU=ireland,O=sun,C=us" and the
     * NameConstraints extension in the candidate certificate
     * includes a permitted component of "O=sun,C=us", which implies
     * that the candidate certificate is allowed to issue certs in
     * the "O=sun,C=us" namespace. The target distance is 3
     * ((distance of permitted NC from target) + 1).
     * The (+1) is added to distinguish the result from the case
     * which returns (0).
     * @throws IOException if certificate does not get closer
     */
static int targetDistance(NameConstraintsExtension constraints, X509Certificate cert, GeneralNameInterface target) throws IOException {
    /* ensure that certificate satisfies existing name constraints */
    if (constraints != null && !constraints.verify(cert)) {
        throw new IOException("certificate does not satisfy existing name " + "constraints");
    }
    X509CertImpl certImpl;
    try {
        certImpl = X509CertImpl.toImpl(cert);
    } catch (CertificateException e) {
        throw new IOException("Invalid certificate", e);
    }
    /* see if certificate subject matches target */
    X500Name subject = X500Name.asX500Name(certImpl.getSubjectX500Principal());
    if (subject.equals(target)) {
        /* match! */
        return 0;
    }
    SubjectAlternativeNameExtension altNameExt = certImpl.getSubjectAlternativeNameExtension();
    if (altNameExt != null) {
        GeneralNames altNames = altNameExt.get(SubjectAlternativeNameExtension.SUBJECT_NAME);
        /* see if any alternative name matches target */
        if (altNames != null) {
            for (int j = 0, n = altNames.size(); j < n; j++) {
                GeneralNameInterface altName = altNames.get(j).getName();
                if (altName.equals(target)) {
                    return 0;
                }
            }
        }
    }
    /* no exact match; see if certificate can get us to target */
    /* first, get NameConstraints out of certificate */
    NameConstraintsExtension ncExt = certImpl.getNameConstraintsExtension();
    if (ncExt == null) {
        return -1;
    }
    /* merge certificate's NameConstraints with current NameConstraints */
    if (constraints != null) {
        constraints.merge(ncExt);
    } else {
        // Make sure we do a clone here, because we're probably
        // going to modify this object later and we don't want to
        // be sharing it with a Certificate object!
        constraints = (NameConstraintsExtension) ncExt.clone();
    }
    if (debug != null) {
        debug.println("Builder.targetDistance() merged constraints: " + String.valueOf(constraints));
    }
    /* reduce permitted by excluded */
    GeneralSubtrees permitted = constraints.get(NameConstraintsExtension.PERMITTED_SUBTREES);
    GeneralSubtrees excluded = constraints.get(NameConstraintsExtension.EXCLUDED_SUBTREES);
    if (permitted != null) {
        permitted.reduce(excluded);
    }
    if (debug != null) {
        debug.println("Builder.targetDistance() reduced constraints: " + permitted);
    }
    /* see if new merged constraints allow target */
    if (!constraints.verify(target)) {
        throw new IOException("New certificate not allowed to sign " + "certificate for target");
    }
    /* find distance to target, if any, in permitted */
    if (permitted == null) {
        /* certificate is unconstrained; could sign for anything */
        return -1;
    }
    for (int i = 0, n = permitted.size(); i < n; i++) {
        GeneralNameInterface perName = permitted.get(i).getName().getName();
        int distance = distance(perName, target, -1);
        if (distance >= 0) {
            return (distance + 1);
        }
    }
    /* no matching type in permitted; cert holder could certify target */
    return -1;
}

Example 37 with X500Name

use of org.bouncycastle.asn1.x500.X500Name in project jdk8u_jdk by JetBrains.

the class Builder method hops.

/**
     * get hop distance of one GeneralName from another in links where
     * the names need not have an ancestor/descendant relationship.
     * For example, the hop distance from ou=D,ou=C,o=B,c=US to
     * ou=F,ou=E,ou=C,o=B,c=US is 3: D->C, C->E, E->F.  The hop distance
     * from ou=C,o=B,c=US to ou=D,ou=C,o=B,c=US is -1: C->D
     *
     * @param base GeneralName
     * @param test GeneralName to be tested against base
     * @param incomparable the value to return if the names are
     *  incomparable
     * @return distance of test name from base measured in hops in the
     *         namespace hierarchy, where 0 means exact match.  Result
     *         is positive if path is some number of up hops followed by
     *         some number of down hops; result is negative if path is
     *         some number of down hops.
     */
static int hops(GeneralNameInterface base, GeneralNameInterface test, int incomparable) {
    int baseRtest = base.constrains(test);
    switch(baseRtest) {
        case GeneralNameInterface.NAME_DIFF_TYPE:
            if (debug != null) {
                debug.println("Builder.hops(): Names are different types");
            }
            return incomparable;
        case GeneralNameInterface.NAME_SAME_TYPE:
            /* base and test are in different subtrees */
            break;
        case GeneralNameInterface.NAME_MATCH:
            /* base matches test */
            return 0;
        case GeneralNameInterface.NAME_WIDENS:
            /* base is ancestor of test */
            return (test.subtreeDepth() - base.subtreeDepth());
        case GeneralNameInterface.NAME_NARROWS:
            /* base is descendant of test */
            return (test.subtreeDepth() - base.subtreeDepth());
        default:
            // should never occur
            return incomparable;
    }
    /* names are in different subtrees */
    if (base.getType() != GeneralNameInterface.NAME_DIRECTORY) {
        if (debug != null) {
            debug.println("Builder.hops(): hopDistance not implemented " + "for this name type");
        }
        return incomparable;
    }
    X500Name baseName = (X500Name) base;
    X500Name testName = (X500Name) test;
    X500Name commonName = baseName.commonAncestor(testName);
    if (commonName == null) {
        if (debug != null) {
            debug.println("Builder.hops(): Names are in different " + "namespaces");
        }
        return incomparable;
    } else {
        int commonDistance = commonName.subtreeDepth();
        int baseDistance = baseName.subtreeDepth();
        int testDistance = testName.subtreeDepth();
        return (baseDistance + testDistance - (2 * commonDistance));
    }
}

Example 38 with X500Name

use of org.bouncycastle.asn1.x500.X500Name in project jdk8u_jdk by JetBrains.

the class HostnameChecker method matchDNS.

/**
     * Check if the certificate allows use of the given DNS name.
     *
     * From RFC2818:
     * If a subjectAltName extension of type dNSName is present, that MUST
     * be used as the identity. Otherwise, the (most specific) Common Name
     * field in the Subject field of the certificate MUST be used. Although
     * the use of the Common Name is existing practice, it is deprecated and
     * Certification Authorities are encouraged to use the dNSName instead.
     *
     * Matching is performed using the matching rules specified by
     * [RFC2459].  If more than one identity of a given type is present in
     * the certificate (e.g., more than one dNSName name, a match in any one
     * of the set is considered acceptable.)
     */
private void matchDNS(String expectedName, X509Certificate cert) throws CertificateException {
    Collection<List<?>> subjAltNames = cert.getSubjectAlternativeNames();
    if (subjAltNames != null) {
        boolean foundDNS = false;
        for (List<?> next : subjAltNames) {
            if (((Integer) next.get(0)).intValue() == ALTNAME_DNS) {
                foundDNS = true;
                String dnsName = (String) next.get(1);
                if (isMatched(expectedName, dnsName)) {
                    return;
                }
            }
        }
        if (foundDNS) {
            // but none match, reject
            throw new CertificateException("No subject alternative DNS " + "name matching " + expectedName + " found.");
        }
    }
    X500Name subjectName = getSubjectX500Name(cert);
    DerValue derValue = subjectName.findMostSpecificAttribute(X500Name.commonName_oid);
    if (derValue != null) {
        try {
            if (isMatched(expectedName, derValue.getAsString())) {
                return;
            }
        } catch (IOException e) {
        // ignore
        }
    }
    String msg = "No name matching " + expectedName + " found";
    throw new CertificateException(msg);
}

Example 39 with X500Name

use of org.bouncycastle.asn1.x500.X500Name in project jdk8u_jdk by JetBrains.

the class VerifierWrapper method getServername.

/*
     * Extract the name of the SSL server from the certificate.
     *
     * Note this code is essentially a subset of the hostname extraction
     * code in HostnameChecker.
     */
private static String getServername(X509Certificate peerCert) {
    try {
        // compare to subjectAltNames if dnsName is present
        Collection<List<?>> subjAltNames = peerCert.getSubjectAlternativeNames();
        if (subjAltNames != null) {
            for (Iterator<List<?>> itr = subjAltNames.iterator(); itr.hasNext(); ) {
                List<?> next = itr.next();
                if (((Integer) next.get(0)).intValue() == 2) {
                    // compare dNSName with host in url
                    String dnsName = ((String) next.get(1));
                    return dnsName;
                }
            }
        }
        // else check against common name in the subject field
        X500Name subject = HostnameChecker.getSubjectX500Name(peerCert);
        DerValue derValue = subject.findMostSpecificAttribute(X500Name.commonName_oid);
        if (derValue != null) {
            try {
                String name = derValue.getAsString();
                return name;
            } catch (IOException e) {
            // ignore
            }
        }
    } catch (java.security.cert.CertificateException e) {
    // ignore
    }
    return null;
}

Example 40 with X500Name

use of org.bouncycastle.asn1.x500.X500Name in project jdk8u_jdk by JetBrains.

the class X500Principal method readObject.

/**
     * Reads this object from a stream (i.e., deserializes it)
     */
private void readObject(java.io.ObjectInputStream s) throws java.io.IOException, java.io.NotActiveException, ClassNotFoundException {
    s.defaultReadObject();
    // re-create thisX500Name
    thisX500Name = new X500Name(name);
}