Computationally Sound Symbolic Anonymity of a Ring Signature
Computationally Sound Symbolic Anonymity of a Ring Signature
复制标题
环签名的计算合理的符号匿名性
DOI:
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发表时间:
2008
期刊:
影响因子:
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通讯作者:
M. Hagiya
中科院分区:
文献类型:
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作者:
Yusuke Kawamoto;Hideki Sakurada;M. Hagiya
This paper investigates the relationship between symbolic and computational approaches to the analysis of the anonymity of cryptographic protocols. We provide two computational soundness results for a symbolic ring signature in the presence of active adversaries, each corresponding to the unforgeability and signer anonymity of a ring signature scheme. The first result is the mapping-style soundness: every computational execution trace corresponds to a symbolic execution trace with overwhelming probability. The second result is the soundness of the symbolic anonymity of protocols: symbolic indistinguishability implies computational indistinguishability. By employing the mapping-style soundness result, we obtain the soundness of the symbolic anonymity when the length of execution traces is bound by a constant independent of the security parameter.
DOI:
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发表时间:
2009
期刊:
Formal to Practical Security, Lecture Notes in Computer Science 5458巻
影响因子:
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作者:
Yusuke Kawamoto;Hideki Sakurada;Masami Hagiya
通讯作者:
Masami Hagiya
DOI:
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发表时间:
2007
期刊:
情報処理学会論文誌 Vol.48,No.9
影响因子:
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作者:
豊田征治;枦修一郎;薮上信;大矢雅志;石山和志;岡崎靖雄;荒井賢一;Kazuki Yoneyama
通讯作者:
Kazuki Yoneyama