发明申请
US20130152195A1 Replay Attack Protection With Small State For Use In Secure Group Communication
有权
![Replay Attack Protection With Small State For Use In Secure Group Communication](/abs-image/US/2013/06/13/US20130152195A1/abs.jpg.150x150.jpg)
基本信息:
- 专利标题: Replay Attack Protection With Small State For Use In Secure Group Communication
- 专利标题(中):重复攻击保护与小状态用于安全组通信
- 申请号:US13429021 申请日:2012-03-23
- 公开(公告)号:US20130152195A1 公开(公告)日:2013-06-13
- 发明人: Sriram Nandha Premnath , Vladimir Kolesnikov
- 申请人: Sriram Nandha Premnath , Vladimir Kolesnikov
- 申请人地址: US NJ Murray Hill
- 专利权人: Alcatel-Lucent USA Inc.
- 当前专利权人: Alcatel-Lucent USA Inc.
- 当前专利权人地址: US NJ Murray Hill
- 主分类号: G06F21/00
- IPC分类号: G06F21/00
摘要:
A replay detection technique with “small state” (e.g., with relatively few bits of state information). A sending node generates a random number ri, retrieves a code sequence (h*i-1), in one example, comprising the last 5 bits of a hash value (hi-1) of a previous packet i−1, generates a hash value hi based on the random number ri and the code sequence (h*i-1), and formulates a packet with index i including hi, ri and datai for delivery to a receiving node. The receiving node retrieves ri and hi from packet i; retrieves a code sequence (h*j) associated with a previous packet j, in one embodiment, comprising the last 5 bits of a hash value (hj) of a previous packet j, generates a hash value (hj+1) based on the random number ri and the code sequence (h*j); and declares a replay attack if hi does not equal hj+1.
摘要(中):
具有“小状态”(例如,具有相对较少的状态信息的位)的重放检测技术。 发送节点生成随机数ri,在一个示例中检索包含先前分组i-1的哈希值(hi-1)的最后5位的代码序列(h * i-1),生成哈希值 基于随机数ri和代码序列(h * i-1)的值hi,并且制定具有包括hi,ri和datai的索引i的分组以用于传送到接收节点。 接收节点从包i检索ri和hi; 在一个实施例中,检索与先前分组j相关联的代码序列(h * j),其包括先前分组j的哈希值(hj)的最后5位,基于该序列生成哈希值(hj + 1) 随机数ri和码序列(h * j); 并且如果hi不等于hj + 1,则声明重播攻击。