Security analysis of discrete logarithm based cryptosystems
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Discrete logarithm based cryptosystems have subtle problems that make the schemes vulnerable. This paper gives a comprehensive listing of security issues in the systems and analyzes three classes of attacks which are based on mathematical structure of the group which is used in the schemes, the disclosed information of the subgroup and implementation details respectively. The analysis will, in turn, allow us to motivate protocol design and implementation decisions.
Key wordsdiscrete logarithm security analysis prime order subgroup secure implementation
CLC numberTP 309
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