-
公开(公告)号:US20130304784A1
公开(公告)日:2013-11-14
申请号:US13938834
申请日:2013-07-10
Applicant: Huawei Technologies Co., Ltd.
Inventor: Deming Zhang , Haiting Li , Taleb Anisse , Jianfeng Xu
IPC: G06F17/14
CPC classification number: G06F17/142 , G06F17/141 , G06F17/147 , G10L19/0212 , G10L19/022
Abstract: A data processing method is disclosed, including: twiddling input data, so as to obtain twiddled data; pre-rotating the twiddled data by using a symmetric rotate factor, where the rotate factor is a·W4L2p+1, p=0, . . . , L/2−1, and α is a constant; performing a Fast Fourier (Fast Fourier Transform, FFT) transform of L/2 point on the pre-rotated data, where L is the length of the input data; post-rotating the data that has undergone the FFT transform by using a symmetric rotate factor, where the rotate factor is b·W4L2q+1, q=0, . . . , L/2−1, and b is a constant; and obtaining output data.
Abstract translation: 公开了一种数据处理方法,包括:对输入数据进行加密,以获得二进制数据; 通过使用对称的旋转因子来预先旋转二进制数据,其中旋转因子为·W4L2p + 1,p = 0。 。 。 ,L / 2-1,α是常数; 在预旋转数据上执行L / 2点的快速傅里叶(Fast Fourier Transform,FFT)变换,其中L是输入数据的长度; 通过使用旋转因数为b·W4L2q + 1,q = 0的对称旋转因子对经过FFT变换的数据进行后转。 。 。 ,L / 2-1,b为常数; 并获得输出数据。