# Information Security and Cryptography Research Group

## On Intrinsic Information

### Matthias Christandl and Renato Renner

IEEE International Symposium on Information Theory — ISIT 2004, IEEE, pp. 135, Jun 2004.

We introduce the public Eve scenario and show that the secret key rate in this scenario is bounded by the intrinsic information. This elucidates previous results and gives new insights in the gap between formation and extraction of secret information.

Intrinsic information, in its function as an upper bound on the secret key rate, is generalized to secret key agreement from arbitrary tripartite quantum states.

## BibTeX Citation

@inproceedings{ChrRen04,
author       = {Matthias Christandl and Renato Renner},
title        = {On Intrinsic Information},
booktitle    = {IEEE International Symposium on Information Theory --- ISIT 2004},
pages        = 135,
year         = 2004,
month        = 6,
publisher    = {IEEE},
}