Automated Unbounded Analysis of Cryptographic Constructions in the Generic Group Model
Automated Unbounded Analysis of Cryptographic Constructions in the Generic Group Model
复制标题
通用组模型中密码结构的自动无界分析
DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
Benedikt Schmidt
中科院分区:
文献类型:
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作者:
Miguel Ambrona;G. Barthe;Benedikt Schmidt
We develop a new method to automatically prove security statements in the Generic Group Model as they occur in actual papers. We start by defining i a general language to describe security definitions, ii a class of logical formulas that characterize how an adversary can win, and iii a translation from security definitions to such formulas. We prove a Master Theorem that relates the security of the construction to the existence of a solution for the associated logical formulas. Moreover, we define a constraint solving algorithm that proves the security of a construction by proving the absence of solutions.
We implement our approach in a fully automated tool, the $$\mathsf {gga}^{\infty }$$gga∞i¾?tool, and use it to verify different examples from the literature. The results improve on the tool by Barthe et al. CRYPTO'14, PKC'15: for many constructions, $$\mathsf {gga}^{\infty }$$gga∞i¾?succeeds in proving standard unbounded security, whereas Barthe's tool is only able to prove security for a small number of oracle queries.
影响因子:
3
作者:
Masayuki Abe;Georg Fuchsbauer;Jens Groth;Kristiyan Haralambiev;Miyako Ohkubo
通讯作者:
Masayuki Abe;Georg Fuchsbauer;Jens Groth;Kristiyan Haralambiev;Miyako Ohkubo