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The BSD License Copyright (c) 2010-2012 RIPE NCC All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. - Neither the name of the RIPE NCC nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 package net.ripe.rpki.commons.crypto.cms.roa;
 import java.util.List;

Creates a RoaCms using the DER encoding specified in the ROA format standard.

See also:
ROA format
 public class RoaCmsBuilder extends RpkiSignedObjectBuilder {
     private Asn asn;
     private List<RoaPrefixprefixes;
     private String signatureProvider;
     public RoaCmsBuilder withCertificate(X509ResourceCertificate certificate) {
         this. = certificate;
         return this;
     public RoaCmsBuilder withAsn(Asn asn) {
         this. = asn;
         return this;
     public RoaCmsBuilder withPrefixes(List<RoaPrefixprefixes) {
         this. = prefixes;
         return this;
     public RoaCmsBuilder withSignatureProvider(String signatureProvider) {
         this. = signatureProvider;
         return this;
     public RoaCms build(PrivateKey privateKey) {
         RoaCmsParser parser = new RoaCmsParser();
         return parser.getRoaCms();

 ROAIPAddress ::= SEQUENCE {
     address IPAdress,
     maxLength INTEGER OPTIONAL }
         DERBitString address = Asn1Util.resourceToBitString(prefix.getPrefix().getStart(), prefix.getPrefix().getPrefixLength());
         ASN1Encodable[] encodables;
         if (prefix.getMaximumLength() == null) {
             encodables = new ASN1Encodable[] { address };
         } else {
             encodables = new ASN1Encodable[] { addressnew ASN1Integer(prefix.getMaximumLength()) };
        return new DERSequence(encodables);

 ROAIPAddressFamily ::= SEQUENCE {
     addressFamily OCTET STRING (SIZE (2..3)),
     addresses SEQUENCE OF ROAIPAddress }
    ASN1Encodable encodeRoaIpAddressFamily(AddressFamily addressFamilyList<RoaPrefixprefixes) {
        ASN1Encodable[] encodablesPrefixes = new ASN1Encodable[prefixes.size()];
        for (int i = 0; i < prefixes.size(); ++i) {
            encodablesPrefixes[i] = encodeRoaIpAddress(prefixes.get(i));
        ASN1Encodable[] seq = { addressFamily.toDer(), new DERSequence(encodablesPrefixes) };
        return new DERSequence(seq);

        Validate.isTrue(!prefixes.isEmpty(), "no prefixes");
        List<ASN1Encodableencodables = new ArrayList<ASN1Encodable>(2);
        Validate.isTrue(!encodables.isEmpty(), "no encodable prefixes");
        return new DERSequence(encodables.toArray(new ASN1Encodable[encodables.size()]));
    private void addRoaIpAddressFamily(List<ASN1EncodableencodablesIpResourceType typeList<RoaPrefixprefixes) {
        List<RoaPrefixselectedPrefixes = selectPrefixes(typeprefixes);
        if (!selectedPrefixes.isEmpty()) {
            encodables.add(encodeRoaIpAddressFamily(AddressFamily.fromIpResourceType(type), selectedPrefixes));
    private List<RoaPrefixselectPrefixes(IpResourceType typeList<RoaPrefixprefixes) {
        List<RoaPrefixresult = new ArrayList<RoaPrefix>();
        for (RoaPrefix roaPrefix : prefixes) {
            if (type == roaPrefix.getPrefix().getType()) {
        return result;

 RouteOriginAttestation ::= SEQUENCE {
    version [0] INTEGER DEFAULT 0,
    asID  ASID,
    ipAddrBlocks SEQUENCE OF ROAIPAddressFamily }

Note: in DER encoding a field with a value equal to its default should NOT be encoded. So the version field should not be present.
        ASN1Encodable[] encodables = { new ASN1Integer(asn.getValue()), encodeRoaIpAddressFamilySequence(prefixes) };
        return new DERSequence(encodables);
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