given the recipient id 0010:1973031500000 the smp encodes this to http://B-bdecb34bc8a0af41465345086f6e50a7.busdox-actorid-upis.sml1.smloc... but the AP calculates a slightly different value of http://B-bdecb34bc8a0af4146534586f6e50a7.busdox-actorid-upis.sml1.smloc.org (there is a "0" missing in the middle)! this results in an dns lookup failure! We are using the reference implementations V 1.0 We compared the source code of the encodings and found differences in the hex-encoding algorithm. impl. in AP: MessageDigest algorithm = MessageDigest.getInstance("MD5"); algorithm.reset(); algorithm.update(defaultBytes); byte messageDigest[] = algorithm.digest(); StringBuffer hexString = new StringBuffer(); for (int i = 0; i < messageDigest.length; i++) { hexString.append(Integer.toHexString(0xFF & messageDigest[i])); } String foo = messageDigest.toString(); System.out.println("sessionid " + source + " md5 version is " + hexString.toString()); source = hexString + ""; return source; impl: in SMP: private static String convertServiceGroupToURI(ServiceGroupId serviceGroupId) { MessageDigest md; try { md = MessageDigest.getInstance("MD5"); } catch (NoSuchAlgorithmException e) { throw new ExceptionInInitializerError(e); } md.update(serviceGroupId.getBusinessIdentifier().getBytes()); byte[] digest = md.digest(); String hashedIdentifier = new String(Hex.encodeHex(digest)); String url = "http://" + HASHED_IDENTIFIER_PREFIX + hashedIdentifier + "." + serviceGroupId.getIdentifierScheme() + "." + SML_DOMAIN; return url; }
| Hardware | None |
| Product | Java START |
| Operating System | All |
| Component | Access Point |
| Version | v1.10 |
| Severity | critical |
| Resolution | Fixed |
Comments
The Implementation of the AP with the mentioned problem was in the trunk version but not in the tagged version (in beginning of july).
This is an error in the AP ( MetadatapublisherClient.java - busdox-transport-commons) The implementation must be: private String md5sum(String source) throws NoSuchAlgorithmException { byte[] defaultBytes = source.getBytes(); MessageDigest algorithm = MessageDigest.getInstance("MD5"); algorithm.reset(); algorithm.update(defaultBytes); byte messageDigest[] = algorithm.digest(); StringBuffer hexString = new StringBuffer(); for (int i = 0; i < messageDigest.length; i++) { String hex = Integer.toHexString(0xFF & messageDigest[i]); if (hex.length() == 1) { hexString.append('0'); } hexString.append(hex); } return hexString.toString(); }
Assigned to me. Now there is a common place in eu.peppol.busdox.uri.BusdoxURLUtils#getDNSNameOfParticipant to calculate the DNS name from a participant identifier in the correct way