Related papers: Secure Multi-Party Addition via Quantum States

This paper has been withdrawn.

This paper has been withdrawn as it has been superseded by postings arXiv:quant-ph/0702147 and arXiv:0712.2935

This paper is withdrawn.

This paper has been withdrawn.

This paper has been withdrawn, and will be superseded by another submission.

This paper has been withdrawn by the author(s), due to some technical problem.

This paper has been withdrawn

This paper was withdrawn by the author due to a fatal error.

The paper has been withdrawn by the author because the result obtained has been reported earlier by other authors.

This paper has been withdrawn by the authour.

This paper has been withdrawn.

This paper was withdrawn by the author.

This paper has been withdrawn by the authors due to some technical problems in the paper.

This paper has been withdrawn.

The paper has been withdrawn by the author since the protocol is not new. It is just the oldest version of BB84.

The paper has bene withdrawn by the author.

This paper has been withdrawn by the author due to some problems.

Administratively withdrawn.

This paper has been withdrawn.

This paper has been withdrawn by the authors,because the proposed protocol is still coverd by the no-go theorem of Mayers, Lo and Chau. We thank H-K. Lo and HF Chau for helpful correspondences.