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A New Digital Signature Algorithm Similar to ELGamal Type

机译：一种类似于ELGamal类型的新数字签名算法

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摘要

Application of digital signature technologybecomes more extensive, but many exposed digital signaturealgorithms have increasingly revealed some shortcomingsand deficiencies. Aiming directly at the frequently useddigital signature technologies, which are weak toSubstitution Attack and Homeostasis Attack, the authorsperform the hash transformation on messages beforesignature. Then, a hash round function is constructed, whichsimultaneously satisfies the characters of balance, highnonlinearity, strict avalanche criterion and realization ofsoftware. Moreover, making use of the hash round function,a new hash algorithm named HRFA (Hash Round FunctionAlgorithm) is contrived. On this basis, aiming at the defectthat the existing digital signature algorithms are weak toactive attack and impersonation attack, using the hashalgorithm named HRFA and the self-certified public keysystem, a new kind of digital signature algorithm, which issimilar to ELGamal, named H-S DSA (Hash RoundFunction and Self-certified Public Key System DigitalSignature Algorithm) is raised and realized. Finally, theauthors analyze the H-S DSA from two aspects of securityand time-complexity. And, the results show that the newdesigned digital signature algorithm named H-S DSA notonly has better security strength, but also has lower timecomplexity.
机译：数字签名技术的应用变得越来越广泛，但是许多公开的数字签名算法已经越来越多地暴露出一些缺点和不足。针对直接使用的数字签名技术（对替代攻击和动态平衡攻击较弱），作者在签名之前对消息执行了哈希转换。然后，构造了一个哈希轮函数，该函数同时满足平衡，高非线性，严格雪崩准则和软件实现的特点。此外，利用哈希回合函数，设计了一种新的名为HRFA（哈希回合函数算法）的哈希算法。在此基础上，针对现有数字签名算法对主动攻击和假冒攻击均较弱的缺陷，利用名为HRFA的哈希算法和自认证的公钥系统，类似于ELGamal的新型数字签名算法HS DSA。提出并实现了哈希函数和自认证公钥系统数字签名算法。最后，作者从安全性和时间复杂性两个方面分析了H-S DSA。结果表明，新设计的数字签名算法H-S DSA不仅具有更好的安全强度，而且时间复杂度更低。

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