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| 一种入侵容忍的CA方案 |
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荆继武1, 冯登国1,2
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1.中国科学院,研究生院,信息安全国家重点实验室,北京,100039;2.中国科学院,软件研究所,信息安全国家重点实验室,北京,100080
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| 摘要: |
| CA(certificate authority)是PKI中的关键设施.CA的私有密钥一旦泄露,该CA签发的所有证书就只能全部作废.保护在线服务CA的私钥也就成为一个非常重要的课题.不是从保护系统或检测入侵出发来保证CA的安全,而是确保当少数部件被攻击或占领后,CA系统的机密信息并没有暴露.通过将私钥分发给不同的部件,并保证任何一个在线的部件无法恢复CA的私钥,从而保护了CA私钥的保密性. |
| 关键词: 入侵容忍 弹性 CA 数字签名 RSA |
| DOI： |
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| 基金项目:国家重点基础研究发展规划973资助项目(G1999035802);国家杰出青年科学基金资助项目(60025205) |
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| An Intrusion Tolerant CA Scheme |
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JING Ji-wu,FENG Deng-guo
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| Abstract: |
| CA (certificate authority) is a critical component in PKI. When the private key of a CA is compromised, all the certificates issued by that CA should be revoked. Keeping the private key secret while providing service on line is very important for a CA. Rather than prevent intrusions or detect them after the fact, the project ensures that the compromise of a few system components does not compromise the private key of the CA. The private key is protected by distributing it across a few servers. The private key is never reconstructed at a single online location. |
| Key words: intrusion tolerant resilience CA （certificate authority） digital signature RSA |
