@inproceedings{IACR:conf/eurocrypt2004/MalkinEC04, author = { Tal Malkin and Satoshi Obana and Moti Yung }, title = {The Hierarchy of Key Evolving Signatures and a Characterization of Proxy Signatures}, booktitle = {EUROCRYPT}, year = {2004}, pages = {306-322}, ee = {http://www.iacr.org/archive/eurocrypt2004/30270305/euro2004-LNCS-final.pdf}, crossref = {IACR:conf/eurocrypt2004}, bibsource = {IACR, http://www.iacr.org} } @proceedings{IACR:conf/eurocrypt2004, editor = {Christian Cachin and Jan Camenisch}, title = {Advances in Cryptology - EUROCRYPT 2004, International Conference on the Theory and Applications of Cryptographic Techniques, Interlaken, Switzerland, May 2-6, 2004, Proceedings. }, booktitle = {EUROCRYPT}, publisher = {Springer}, series = {Lecture Notes in Computer Science}, volume = {3027}, year = {2004}, isbn = {3-540-21935-8}, bibsource = {IACR, http://www.iacr.org} }