发明名称 |
Leak-resistant cryptographic payment smartcard |
摘要 |
We disclose methods and apparatuses 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 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 are shown for symmetric authentication, certified Diffie-Hellman (when either one or both users have certificates), RSA, ElGamal public key decryption.
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申请公布号 |
US7506165(B2) |
申请公布日期 |
2009.03.17 |
申请号 |
US20020136012 |
申请日期 |
2002.04.29 |
申请人 |
CRYPTOGRAPHY RESEARCH, INC. |
发明人 |
KOCHER PAUL C.;JAFFE JOSHUA M. |
分类号 |
G06F21/00;G06F7/72;H04L9/08;H04L9/10;H04L9/30;H04L9/32 |
主分类号 |
G06F21/00 |
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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