{"acknowledgement":"Pietrzak was supported by the Swiss National Science Foundation, project No. 200020-103847/1.","OA_type":"gold","publication_identifier":{"eisbn":["9783540318705"],"isbn":["9783540281146"]},"_id":"3211","extern":"1","OA_place":"publisher","intvolume":"      3621","day":"12","publication_status":"published","conference":{"location":"Santa Barbara, CA, United States","start_date":"2005-08-14","name":"CRYPTO: International Cryptology Conference","end_date":"2005-08-18"},"alternative_title":["LNCS"],"type":"conference","publication":"25th Annual International Cryptology Conference","status":"public","oa_version":"None","date_created":"2018-12-11T12:02:02Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","citation":{"chicago":"Bellare, Mihir, Krzysztof Z Pietrzak, and Phillip Rogaway. “Improved Security Analyses for CBC MACs.” In <i>25th Annual International Cryptology Conference</i>, 3621:527–45. Springer Nature, 2005. <a href=\"https://doi.org/10.1007/11535218_32\">https://doi.org/10.1007/11535218_32</a>.","ieee":"M. Bellare, K. Z. Pietrzak, and P. Rogaway, “Improved security analyses for CBC MACs,” in <i>25th Annual International Cryptology Conference</i>, Santa Barbara, CA, United States, 2005, vol. 3621, pp. 527–545.","mla":"Bellare, Mihir, et al. “Improved Security Analyses for CBC MACs.” <i>25th Annual International Cryptology Conference</i>, vol. 3621, Springer Nature, 2005, pp. 527–45, doi:<a href=\"https://doi.org/10.1007/11535218_32\">10.1007/11535218_32</a>.","ama":"Bellare M, Pietrzak KZ, Rogaway P. Improved security analyses for CBC MACs. In: <i>25th Annual International Cryptology Conference</i>. Vol 3621. Springer Nature; 2005:527-545. doi:<a href=\"https://doi.org/10.1007/11535218_32\">10.1007/11535218_32</a>","short":"M. Bellare, K.Z. Pietrzak, P. Rogaway, in:, 25th Annual International Cryptology Conference, Springer Nature, 2005, pp. 527–545.","ista":"Bellare M, Pietrzak KZ, Rogaway P. 2005. Improved security analyses for CBC MACs. 25th Annual International Cryptology Conference. CRYPTO: International Cryptology Conference, LNCS, vol. 3621, 527–545.","apa":"Bellare, M., Pietrzak, K. Z., &#38; Rogaway, P. (2005). Improved security analyses for CBC MACs. In <i>25th Annual International Cryptology Conference</i> (Vol. 3621, pp. 527–545). Santa Barbara, CA, United States: Springer Nature. <a href=\"https://doi.org/10.1007/11535218_32\">https://doi.org/10.1007/11535218_32</a>"},"volume":3621,"doi":"10.1007/11535218_32","author":[{"full_name":"Bellare, Mihir","first_name":"Mihir","last_name":"Bellare"},{"full_name":"Pietrzak, Krzysztof Z","orcid":"0000-0002-9139-1654","last_name":"Pietrzak","first_name":"Krzysztof Z","id":"3E04A7AA-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Phillip","last_name":"Rogaway","full_name":"Rogaway, Phillip"}],"date_published":"2005-09-12T00:00:00Z","publist_id":"3469","title":"Improved security analyses for CBC MACs","date_updated":"2026-07-02T07:55:53Z","article_processing_charge":"No","language":[{"iso":"eng"}],"page":"527 - 545","month":"09","year":"2005","publisher":"Springer Nature","abstract":[{"lang":"eng","text":"We present an improved bound on the advantage of any q-query adversary at distinguishing between the CBC MAC over a random n-bit permutation and a random function outputting n bits. The result assumes that no message queried is a prefix of any other, as is the case when all messages to be MACed have the same length. We go on to give an improved analysis of the encrypted CBC MAC, where there is no restriction on queried messages. Letting m be the block length of the longest query, our bounds are about mq2/2n for the basic CBC MAC and mo(1)q2/2n for the encrypted CBC MAC, improving prior bounds of m2q2/2n. The new bounds translate into improved guarantees on the probability of forging these MACs."}]}