TWEAKABLE ENCRYPION MODE FOR MEMORY ENCRYPTION WITH PROTECTION AGAINST REPLAY ATTACKS
    4.
    发明申请
    TWEAKABLE ENCRYPION MODE FOR MEMORY ENCRYPTION WITH PROTECTION AGAINST REPLAY ATTACKS 有权
    内存加密的TWEAKING加密模式与防止重击攻击的保护

    公开(公告)号:US20120079285A1

    公开(公告)日:2012-03-29

    申请号:US12890365

    申请日:2010-09-24

    IPC分类号: G06F12/14

    摘要: A method and apparatus for protecting against hardware attacks on system memory is provided. A mode of operation for block ciphers enhances the standard XTS-AES mode of operation to perform memory encryption by extending a tweak to include a “time stamp” indicator. An incrementing mechanism using the “time stamp” indicator generates a tweak which separates different contexts over different times such that the effect of “Type 2 replay attacks” is mitigated.

    摘要翻译: 提供了一种用于防止对系统存储器的硬件​​攻击的方法和装置。 分组密码的操作模式增强了标准的XTS-AES操作模式,通过扩展调整以包括“时间戳”指示符来执行存储器加密。 使用“时间戳”指示符的增量机制产生了在不同时间分离不同上下文的调整,使得“类型2重放攻击”的效果得到缓解。