| 摘要 |
Embodiments of the present invention enable allocating and indicating the trustworthiness of a message, especially messages that comprise content that has been digitally signed. In some embodiments, a provider of assurance services and assurance software provides trust attestations related to messages and may manipulate the user interface used to view these messages. The trust attestations may be computed by various methods. The trust attestations may then be presented when the message is displayed to the user using the assurance software. For example, the trust attestations may be displayed as user interface elements in a designated portion of the chrome of a messaging service, such as a webmail service. In one embodiment, the assurance software can run on the webmail service and the trust attestations in the chrome are served up via techniques for delivery of client-server presentation data. In another embodiment, the assurance software is implemented as software that runs on the client and may perform some computations on the client in order to manipulate the messaging service's chrome. In yet another embodiment, the assurance software may run as an extension to an e-mail client that runs on a user's machine. The assurance software is configured to work with the presenter of the message, but independently of the presenter.
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