公开(公告)号：US20060098820A1

公开(公告)日：2006-05-11

申请号：US11081681

申请日：2005-03-17

申请人： Ku Young Chang ,  Mun Kyu Lee ,  Hang Lee ,  Do Hong ,  Ju Kang ,  Hyun Cho ,  Kyo Chung

发明人： Ku Young Chang ,  Mun Kyu Lee ,  Hang Lee ,  Do Hong ,  Ju Kang ,  Hyun Cho ,  Kyo Chung

IPC分类号： H04L9/00

CPC分类号： H04L9/0861 ,  H04L2209/12

摘要： A method and apparatus for generating a keystream are provided. The method includes: (a) receiving a bitstream comprised of at least 4 bits; (b) selecting at least two bits from the received bitstream; (c) generating an operation value by performing a predetermined bitwise operation on the bits selected in (b); and (d) determining whether to discard the received bitstream or to output the rest of the received bitstream not selected in (b) according to the operation value. The method and apparatus for generating a keystream are expected to be suitable for a ubiquitous computing and network environment and to provide high security or high efficiency.

公开(公告)号：US07587046B2

公开(公告)日：2009-09-08

申请号：US11081681

申请日：2005-03-17

申请人： Ku Young Chang ,  Mun Kyu Lee ,  Hang Rok Lee ,  Do Won Hong ,  Ju Sung Kang ,  Hyun Sook Cho ,  Kyo Il Chung

发明人： Ku Young Chang ,  Mun Kyu Lee ,  Hang Rok Lee ,  Do Won Hong ,  Ju Sung Kang ,  Hyun Sook Cho ,  Kyo Il Chung

IPC分类号： H04L9/00 ,  G06F7/58

CPC分类号： H04L9/0861 ,  H04L2209/12

摘要： A method and apparatus for generating a keystream are provided. The method includes: (a) receiving a bitstream comprised of at least 4 bits; (b) selecting at least two bits from the received bitstream; (c) generating an operation value by performing a predetermined bitwise operation on the bits selected in (b); and (d) determining whether to discard the received bitstream or to output the rest of the received bitstream not selected in (b) according to the operation value. The method and apparatus for generating a keystream are expected to be suitable for a ubiquitous computing and network environment and to provide high security or high efficiency.

摘要翻译： 提供了一种用于产生密钥流的方法和装置。 该方法包括：（a）接收由至少4位组成的比特流; （b）从所接收的比特流中选择至少两个比特; （c）通过对（b）中选择的比特执行预定的逐位运算来产生操作值; 以及（d）根据操作值确定丢弃所接收的比特流还是输出未在（b）中选择的接收的比特流的其余部分。 预期用于生成密钥流的方法和装置适用于普遍存在的计算和网络环境并提供高安全性或高效率。