发明名称 |
LEAK-RESISTANT CRYPTOGRAPHIC METHOD AND APPARATUS |
摘要 |
The present invention provides a method and apparatus for securing cryptographic devices against attacks involving external monitoring and analysis. A "self-healing" property is introduced, enabling security to be continually re-established following partial compromises. In addition to producing useful cryptographic results, a typical leak-resistant cryptographic operation modifies or updates (330) secret key material in a manner designed to render useless any information about the secrets that may have previously leaked from the system. Exemplary leak-proof and leak-resistant implementations of the invention are shown for symmetric authentication (350), certified Diffie-Hellman (when either one or both users have certificates), RSA, ElGamal public key decryption (303).
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申请公布号 |
WO9935782(A1) |
申请公布日期 |
1999.07.15 |
申请号 |
WO1998US27896 |
申请日期 |
1998.12.31 |
申请人 |
CRYPTOGRAPHY RESEARCH, INC. |
发明人 |
KOCHER, PAUL, C.;JAFFE, JOSHUA, M. |
分类号 |
G06F7/72;H04L9/08;H04L9/10;H04L9/30;H04L9/32;(IPC1-7):H04L9/30 |
主分类号 |
G06F7/72 |
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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