Related papers: Unconditionally Secure Multi-Party Computation

This paper has been withdrawn as it has been superseded by postings arXiv:quant-ph/0702147 and arXiv:0712.2935

This paper has been withdrawn due to security loophole. We thank Dr G. P. he for pointing this to us.

This paper has been withdrawn by the author due to a crucial mistakes.

This paper has been withdrawn.

This paper has been withdrawn temporarily.

This paper has been withdrawn Abstract: This paper has been withdrawn by the author due to the publication.

The paper has been withdrawn by the author since the protocol is not new.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

This paper has been withdrawn.

This paper has been withdrawn by the authors,because the proposed protocol is still coverd by the no-go theorem of Mayers, Lo and Chau.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.

This paper has been temporarily withdrawn by the author(s),

This paper has been withdrawn by the author.

This paper has been withdrawn by the authors.

This paper has been withdrawn.

This paper has been withdrawn.

This paper has been withdrawn.

This paper has been withdrawn.

This version of the paper has been withdrawn due to an error. Please contact one of the authors for an updated copy.

This paper has been withdrawn because the author no longer believes the firewall argument is correct.

This paper has been withdrawn for the reasons mentioned in the Comments.

This paper has been retracted.