@misc{cryptoeprint:2006:356, author = {Emilia K\"{a}sper and Sven Laur and Helger Lipmaa}, title = {Black-Box Knowledge Extraction Revisited: Universal Approach with Precise Bounds}, howpublished = {Cryptology ePrint Archive, Report 2006/356}, year = {2006}, url = {http://eprint.iacr.org/2006/356}, }