@misc{cryptoeprint:1998:023, author = {William Aiello, Mihir Bellare, Giovanni Di Crescenzo and Ramarathnam Venkatesan}, title = {Security amplification by composition: The case of doubly-iterated, ideal ciphers }, howpublished = {Cryptology ePrint Archive, Report 1998/023}, year = {1998}, url = {http://eprint.iacr.org/1998/023}, }