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    • 92. 发明授权
    • Ad-hoc trust establishment using visual verification
    • 使用视觉验证的特设信任机构
    • US08621210B2
    • 2013-12-31
    • US12146774
    • 2008-06-26
    • Laurent BussardUlrich MüllerAlain Gefflaut
    • Laurent BussardUlrich MüllerAlain Gefflaut
    • H04L9/00H04L9/08G06F17/30G06F7/04G06F15/16
    • H04L9/0844H04L9/3236H04L9/3271
    • Methods for ad-hoc trust establishment using visual verification are described. In a first embodiment, a visual representation of a shared data is generated on two or more devices and the visual representations generated can be visually compared by a user. This method can be used to verify that the correct devices are involved in a negotiation, when pre-existing trust relationships do not exist between the devices. The visual representation may, for example, comprise a picture with a number of different elements, each representing a part of the shared data. In another embodiment, a method of secure key exchange is described in which, before sharing the keys, the parties exchange information which encapsulates the key. This information can be used subsequently to check that a party has not changed the key that they are using and prevents a man in the middle attack.
    • 描述了使用视觉验证的即席信任建立方法。 在第一实施例中,在两个或多个设备上生成共享数据的视觉表示,并且可以由用户视觉地比较生成的视觉表示。 当设备之间不存在预先存在的信任关系时,此方法可用于验证正确的设备是否参与协商。 视觉表示可以例如包括具有多个不同元素的图像,每个图像表示共享数据的一部分。 在另一个实施例中,描述了一种安全密钥交换方法,其中在共享密钥之前,双方交换封装密钥的信息。 随后可以使用此信息来检查一方是否没有改变他们正在使用的密钥,并防止中间人员发生攻击。