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1. 发明授权

US06370251B1 Traffic key access method and terminal for secure communication without key escrow facility 失效
标题翻译：交通密钥接入方式和终端安全通信，无密钥托管设施
公开(公告)号：US06370251B1
公开(公告)日：2002-04-09
申请号：US09093083
申请日：1998-06-08
申请人： Douglas Allan Hardy , Douglas Matthew East
发明人： Douglas Allan Hardy , Douglas Matthew East
IPC分类号： H04L100
CPC分类号： H04L9/0897
摘要： Key escrow is achieved without a key escrow facility. An escrow key pair is generated and stored in the terminal. A key escrow field that includes a traffic key encrypted with the escrow key is provided before encrypted traffic is communicated. When access to the traffic key is authorized, the escrow key is extracted from the terminal and used to decrypt the traffic key. The private portion of the escrow key is covered in the terminal with an escrow key access number. The escrow key access number is preferably generated by the terminal manufacturer with a secret algorithm using the terminal serial number. Alternatively, the escrow key is stored within a user token, rather than the terminal.
摘要翻译：密钥托管是在没有密钥托管设施的情况下实现的。生成一个代管密钥对并存储在终端中。在传送加密流量之前，提供包含使用代管密钥加密的流量密钥的密钥托管字段。授权访问流量密钥时，从终端提取代管密钥，用于解密流量密钥。代管钥匙的私人部分用终端密码存入号码。托管密钥访问号码优选地由具有使用终端序列号的秘密算法的终端制造商生成。或者，代管密钥存储在用户令牌内，而不是终端。

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