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1. 发明授权

US5832227A Method for providing message document security by deleting predetermined header portions and attaching predetermined header portions when seal is validly associated with message or document 失效
标题翻译：用于通过删除预定标头部分并且当密封与消息或文档有效地相关联时附加预定标题部分来提供消息文档安全性的方法
公开(公告)号：US5832227A
公开(公告)日：1998-11-03
申请号：US481398
申请日：1995-08-18
申请人： Mark Stephen Anderson , John Desborough Yesberg , Michael Pope , Lisa Nayda , Ken Hayman , Brendan Beahan
发明人： Mark Stephen Anderson , John Desborough Yesberg , Michael Pope , Lisa Nayda , Ken Hayman , Brendan Beahan
IPC分类号： H04L12/58 , H04L29/06 , H04N1/32 , H04N1/44 , G06F13/14 , G06F13/20 , H04L9/00
CPC分类号： H04N1/32128 , H04L12/58 , H04L63/123 , H04N2201/3235 , H04N2201/3236 , H04N2201/3278
摘要： The disclosure of the current invention describes a method of handling a message or a document to be released external of a secure computer environment. The message or the document is first directed to a trusted sealing device which displays the message or the document to a human user for visual checking. If the message or document is acceptable to the human user, the method associates the message or the document with a seal produced by the trusted sealing device. The message or the document is then directed along with the associated seal to a gateway which deletes portions of the header and checks the validity of the associated seal. If, as a result of this verification, it is determined that the associated seal is validly associated with the message or the document, the method attaches predetermined header portions to the message or document and communicates the message or the document from the secure computer environment.
摘要翻译： PCT No.PCT / AU93 / 00644 Sec。 371日期：1995年8月18日 102（e）日期1995年8月18日PCT提交1993年12月14日PCT公布。出版物WO94 / 14258 日期1994年6月23日本发明的公开内容描述了处理在安全计算机环境外部释放的消息或文档的方法。消息或文档首先被引导到信任的密封装置，其将消息或文档显示给人类用户进行目视检查。如果消息或文档是人类可接受的，则该方法将消息或文档与可信密封装置产生的密封相关联。然后将消息或文档与相关联的密封一起引导到网关，其删除标题的部分并检查相关联的密封的有效性。如果作为该验证的结果，确定相关联的密封件与消息或文档有效地相关联，则该方法将预定标题部分附加到消息或文档，并从安全计算机环境传送消息或文档。

2. 发明授权

US5701342A Complex document security 失效
标题翻译：复杂的文件安全
公开(公告)号：US5701342A
公开(公告)日：1997-12-23
申请号：US481397
申请日：1995-08-28
申请人： Mark Stephen Anderson , John Desborough Yesberg , Michael Pope , Lisa Nayda , Ken Hayman , Brendan Beahan
发明人： Mark Stephen Anderson , John Desborough Yesberg , Michael Pope , Lisa Nayda , Ken Hayman , Brendan Beahan
IPC分类号： H04L12/58 , H04L29/06 , H04N1/32 , H04N1/44 , H04L9/32
CPC分类号： H04N1/32128 , H04L12/58 , H04L63/123 , H04N2201/3235 , H04N2201/3236 , H04N2201/3278
摘要： A method and means to control the degree to which the presence of covert information may be reduced, eliminated or corrupted in documents created on a computer device (particularly complex documents) before the document is transmitted outside a secure environment in which the document is created. The process of handling a document in a secure environment comprises the preferred step of displaying the document or a predetermined portion thereof in a manner which conforms to the rule that no pixel of the display is written to more than once for the current portion of the document being displayed. Preferably the method includes the steps of creating a document, transforming the document into an intermediate form by defining the content and structure of the document using a predetermined set of document describers, applying the intermediate form of the document to at least one filter adapted to eliminate or corrupt the content and form of any covert information contained within the intermediate form of the document followed by the previously described step of displaying the document in the manner described above.
摘要翻译： PCT No.PCT / AU93 / 00645 Sec。 371日期：1995年8月28日 102（e）日期1995年8月28日PCT提交1993年12月14日PCT公布。 WO94 / 14259 PCT公开号日期1994年6月23日一种用于控制在将文档在安全环境之外传输的计算机设备（特别是复杂文档）下创建的文档中可以减少，消除或损坏隐藏信息的存在程度的方法和装置，创建文档。在安全环境中处理文档的过程包括以符合规则的方式显示文档或其预定部分的优选步骤，即对于文档的当前部分不将多个显示器的像素写入不止一次正在显示。优选地，该方法包括以下步骤：创建文档，通过使用预定的一组文档描述符定义文档的内容和结构将文档变换为中间形式，将文档的中间形式应用于适于消除的文档的至少一个过滤器或者破坏包含在文档的中间形式中的任何隐蔽信息的内容和形式，其后跟上述以上述方式显示文档的步骤。

3. 发明授权

US06836548B1 Communications security and trusted path method and means 失效
标题翻译：通信安全和可信路径的方法和手段
公开(公告)号：US06836548B1
公开(公告)日：2004-12-28
申请号：US07970556
申请日：1992-11-04
申请人： Mark Stephen Anderson , John Desborough Yesberg , Damian Marriott , Lisa Nayda , Ken Hayman , Malcolm Stevens , Brendan Beahan
发明人： Mark Stephen Anderson , John Desborough Yesberg , Damian Marriott , Lisa Nayda , Ken Hayman , Malcolm Stevens , Brendan Beahan
IPC分类号： H04L928
CPC分类号： G06F21/72 , G06F21/73 , G06F21/84
摘要： A trusted path device is described which may be used stand alone or may be retrofitted to a users untrusted computer console or workstation so that an untrusted data input may be displayed on an untrusted display and verified by the user, following which the trusted data can be output to an untrusted or trusted device or network. The output may be encrypted or not, by means of an encryption device which may or may not use a ‘one time pad’ key provided from a structured array of retrievable “one time pad” keys having associated uniquely there with, a serial number which itself need not be encrypted but with which the input data and encrypted output data are uniquely associated. Sufficient “one time pad” keys are provided on a commonly available and physically manageable medium so as to allow much simplified key management procedures while still maintaining high levels of correctness and effectiveness of the encryption processes. Trusted devices as per ITSEC Level 6 may be used to implement the trusted path and encryption devices since the apparatus according to the invention are inherently simple in functionality thereby simplifying conformance with the relevant ITSEC and security equivalent requirements.
摘要翻译：描述了可信路径设备，其可以被单独使用或者可以被改造到用户不可信计算机控制台或工作站，使得不可信数据输入可以显示在不可信的显示器上并被用户验证，随后可信数据可以是输出到不受信任的或可信任的设备或网络。可以通过加密设备来加密输出，该加密设备可以使用或不使用从具有与其唯一相关联的可检索“一次性密码”键的结构化阵列提供的“一次性密钥”密钥，序列号本身不需要加密，而是与输入数据和加密输出数据唯一相关联。在一个普遍可用和物理上可管理的介质上提供了足够的“一次性”键，以便允许大量简化的密钥管理过程，同时仍然保持加密过程的高水平的正确性和有效性。根据本发明的设备本身就具有简单的功能性，从而简化了与相关ITSEC和安全等效要求的一致性，因此可以使用根据ITSEC 6级的可信设备来实现可信路径和加密设备。

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