基于广义XTR体制的签名方案
Signature Schemes Based on Extended XTR System
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摘要: 与RSA和ECC相比较,同等安全程度下XTR密钥长度远远小于RSA,最多只是ECC密钥长度的2倍;而XTR参数和密钥选取远远快于ECC。该文利用有限域中元素迹的快速算法,给出了两种特殊的基于广义XTR体制的签名方案,其安全性等价于解广义XTR群中的离散对数困难问题,但是传输的数据量只有原来方案的1/3.
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关键词:
- 广义XTR公钥体制; 数字签名; 迹表示
Abstract: Compared with RSA and ECC, XTR keys are much smaller than RSA keys of equivalent security, and are at most twice as big as ECC keys, but parameter and key selections for XTR are much faster than ECC. With the fast method for computing the trace of the elements in the finite field, two blind signature schemes based on extended XTR system are presented in this paper, the security is equivalent to solving discrete logarithm problem of extended XTR group while the datum is only 1/3 of the previous schemes. -
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