NullPointerException while sending signed XML via SOAP to Axis webservice

Question

Hello,
I was wondering if it was possible to change the behavior of Apache XML Security libraries and delete "ds:" namespaces while digitally signing XML files.
We are trying to send signed XML to a local chilean IRS, as a part of an automatic autentication process. The steps to authenticate are quite straightforward and involve:
1. Obtain from webservice 1 a "seed", which is a random number representing temporal session opened
2. Sign this seed (in XML format) using our certificate
3. Send signed XML to another webservice 2, which should validate it and open a permanent session, returning a "token", which is an alphanumeric string
What happens is that steps 1 and 2 are completed without problems, while we cannot pass step 3. The webservice (as far I know mounted on Apache Axis) fails with ugly error "NullPointerException".
The IRS says that our signed XML, although valid, seems strange to them, as it contains those "ds:" added by Apache Xml Security libraries while signing the file.
So here comes the question: is it possible to obtain valid signed XML without those "ds:"? What other reasons may result in that NullPointerException error?
We use simple Java class and VeriSign certificate stored in Java keystore to sign XML files, and Apache Xml Security 1.2.0 jars.
For any clues that could help us thank you in advance.
Jack

Answer 1

Hi,
Few months ago we had also problems with "locked user" in XI, in our case XIAPPLUSER was sometimes (b)locked.
Perhaps note:
721548 Changing the passwords of the XI 3.0 service users
will help you.
We removed and entered the service users again, with the password in CAPITALS and language blank.
After that our problem was solved, I hope yours too.
Regards
Jack