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因此设计安全、高效、可行的代理数字签名方案具有重要的现实意义。
So it is of great significance to design secure, efficient and feasible proxy signature schemes.
现有的代理数字签名方案大多是基于离散对数问题和大数因子分解问题的方案。
Up to now most of the known proxy digital signature schemes are based on discrete logarithmic problems or big number factorization problems.
摘要：现有的代理数字签名方案都是基于离散对数问题和大数因子分解问题的方案。
Absrtact: The present representative digital signature approaches are based on discrete logarithm problem and large number factor decomposition.
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