摘要
提出一个具有双重验证条件的多变量二次签名方案.通过在其中心方程设入秘密私钥将同态哈希函数应用到中等扩域体制中.该方法在签名验证时,不仅只验证通常的公钥方程,还涉及体制内部结构,因此在一定程度上提高了对Grbner基攻击的安全性.分析结果表明,该双重验证可更有效地防止伪造,提高算法的安全性.
A multivariate quadratic signature scheme with double checks is presented.In the method,a homomorphic Hash function was used to medium field extension cryptosystem,and the private secrets were hidden in the central functions of the scheme.As signature verification is to verify public key polynomial vector in general and its interior structure,this method improves the ability to resist Grbner-basis attack to some extent.Analysis shows that the scheme with the double checks can prevent forging signature effectively and have a higher security.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2012年第5期46-48,53,共4页
Journal of Beijing University of Posts and Telecommunications
基金
陕西科技大学博士生科研启动基金项目(BJ11-12)
关键词
公钥密码体制
密码学分析
多变量
哈希函数
中等扩域
public key cryptography
cryptanalysis
multivariate
Hash function
medium field extension
