考虑定义在模数N的剩余类环上的矩阵所构成的矩阵环上的求根问题的困难性,本文设计了一个数字签名算法,证明了攻击者能够成功伪造一个签名当且仅当攻击者能够求解矩阵环上的求根问题.对矩阵环上的求根问题的困难性进行了分析,在一种特殊情况下,证明了矩阵环上的求根问题与整数分解问题是等价的.分析表明,该数字签名算法是一个高效安全的签名算法.
The computational intractability of the root extraction problem on the matrix ring constructed from the residue ring modulo N is investigated,and a digital signature scheme is proposed.It is proven that the attacker can forge a signature if and only if he can solve the root extraction problem defined over matrix ring.The computational intractability of the root extraction problem over the matrix ring is analyzed,and it is proven that the root digital extraction problem is equivalent to the integer factorization problem in a special case.Analysis shows that the proposed signature scheme is efficient and secure.