发明名称 |
SYSTEM, APPARATUS AND METHOD FOR REPLACING A CRYPTOGRAPHIC KEY |
摘要 |
<p>Embodiments describe a method and / or system (200) whereby a secret key in a cryptographic system may be replaced without revealing the secret key. One embodiment comprises creating a first private key (210) and corresponding first public key. A second private key associated with the first private key and a second public key corresponding to the second private key are also created (220). The second private key is output once (230) such that it can be re-created and the second public key is output when outputting the first public key (240). The first private key is used for authentication (260). The method further comprises re-creating the second private key; and using the second private key for authentication. Another embodiment comprises creating a private key and corresponding public key with associated system parameter (410); outputting the system parameter when outputting the public key (430); and using the private key for authentication (460). The method may further comprise creating a new private key using the previous key and the system parameter (470).</p> |
申请公布号 |
EP1582024(B1) |
申请公布日期 |
2009.09.30 |
申请号 |
EP20030800318 |
申请日期 |
2003.12.30 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
ROSE, GREGORY G.;GANTMAN, ALEXANDER;NOERENBERG, JOHN W. |
分类号 |
H04L9/00;H04K1/00;H04L9/30;H04L9/32 |
主分类号 |
H04L9/00 |
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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