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Analysis on Bleichenbacher?s Forgery Attack
Vienna, Austria April 10-April 13
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/ARES.2007.38The Second International Conference o ...
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Tetsuya Izu, FUJITSU LABORATORIES Ltd.
Masahiko Takenaka, FUJITSU LABORATORIES Ltd.
Takeshi Shimoyama, FUJITSU LABORATORIES Ltd.
In 2006, Bleichenbacher presented a new forgery attack against the signature scheme RSASSA-PKCS1-v1 5. The attack allows an adversary to forge a signature on almost arbitrary messages, if an implementation is not proper. Since the example was only limited to the case when the public exponent is 3 and the bit-length of the public composite is 3072, a potential threat is not known. This paper analyzes Bleichenbacher?s forgery attack and shows applicable composite sizes for given exponents. We also propose two extended attacks with numerical examples.
Citation:
Tetsuya Izu, Masahiko Takenaka, Takeshi Shimoyama, "Analysis on Bleichenbacher?s Forgery Attack," ares, pp.1167-1174, The Second International Conference on Availability, Reliability and Security (ARES'07), 2007
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