计算机学报
計算機學報
계산궤학보
CHINESE JOURNAL OF COMPUTERS
2014年
5期
1058-1062
,共5页
量子Fourier变换%离散对数%量子计算算法%公钥密码%量子门%网络安全%信息安全
量子Fourier變換%離散對數%量子計算算法%公鑰密碼%量子門%網絡安全%信息安全
양자Fourier변환%리산대수%양자계산산법%공약밀마%양자문%망락안전%신식안전
quantum Fourier transform%discrete logarithm%quantum algorithm%public-key crypto%quantum gate%network security%information security
文中通过多次量子Fourier变换和变量代换,给出了一个ZN上离散对数量子计算算法,刻画了元素的阶r与算法成功率的关系,当r为素数时,算法成功的概率接近于1,新算法所需基本量子门数的规模为O(L3),且不需要执行函数|f(x1,x2)〉的量子Fourier变换的反演变换,优于已有的ZN上离散对数量子计算算法,其中L=[logN]+1.
文中通過多次量子Fourier變換和變量代換,給齣瞭一箇ZN上離散對數量子計算算法,刻畫瞭元素的階r與算法成功率的關繫,噹r為素數時,算法成功的概率接近于1,新算法所需基本量子門數的規模為O(L3),且不需要執行函數|f(x1,x2)〉的量子Fourier變換的反縯變換,優于已有的ZN上離散對數量子計算算法,其中L=[logN]+1.
문중통과다차양자Fourier변환화변량대환,급출료일개ZN상리산대수양자계산산법,각화료원소적계r여산법성공솔적관계,당r위소수시,산법성공적개솔접근우1,신산법소수기본양자문수적규모위O(L3),차불수요집행함수|f(x1,x2)〉적양자Fourier변환적반연변환,우우이유적ZN상리산대수양자계산산법,기중L=[logN]+1.
By applying multiple Fourier transform and variable transform,a quantum algorithmfor discrete logarithm problem over ZN is presented.The relationship between order r and successprobability is quantitatively characterized,where r is the order of the selective element.Particularly,when r is a prime number,the success probability is close to 1 and the scale of elementary quantumgates is O(L3),where L=[logN]+1.The new algorithm doesn’t need to perform inverse quantumFourier transform on|f(X1,X2)〉,which is superior to the existing algorithm.