发明名称 |
METHOD FOR SECURELY USING DIGITAL SIGNATURES IN A COMMERCIAL CRYPTOGRAPHIC SYSTEM |
摘要 |
A system for securely using digital signatures in a commercial cryptographic system that allows industry-wide security policy and authorization information to be encoded into the signatures and certificates by employing attribute certificates to enforce policy and authorization requirements. In addition to value limits, cosignature requirements and document type restrictions that can be placed on transactions, an organization can enforce with respect to any transaction geographical and temporal controls, age-of-signature limitations, preapproved counterparty limitations and confirm-to requirements by using attribute certificates for the transacting user. Restrictions on distribution of certificates can be set using attribute certificates. Certificates can be used also to ensure key confinement and non-decryption requirements of smartcards in this system. |
申请公布号 |
WO9602993(A3) |
申请公布日期 |
1996.03.07 |
申请号 |
WO1995US09076 |
申请日期 |
1995.07.19 |
申请人 |
BANKERS TRUST COMPANY;SUDIA, FRANK, W.;SIRITZKY, BRIAN |
发明人 |
SUDIA, FRANK, W.;SIRITZKY, BRIAN |
分类号 |
G09C1/00;G07F7/10;H04L9/08;H04L9/32 |
主分类号 |
G09C1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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