发明名称 |
SYSTEMS AND METHODS TO SECURELY GENERATE SHARED KEYS |
摘要 |
A method for secure bidirectional communication between two systems is described. A first key pair and a second key pair are generated, the latter including a second public key that is generated based upon a shared secret. First and second public keys are sent to a second system, and third and fourth public keys are received from the second system. The fourth public key is generated based upon the shared secret. A master key for encrypting messages is calculated based upon a first private key, a second private key, the third public key and the fourth public key. For re-keying, a new second key pair having a new second public key and a new second private key is generated, and a new fourth public key is received. A new master key is calculated using elliptic curve calculations using the new second private key and the new fourth public key.
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申请公布号 |
CA2564909(C) |
申请公布日期 |
2011.06.28 |
申请号 |
CA20052564909 |
申请日期 |
2005.05.02 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
BROWN, MICHAEL K.;BROWN, MICHAEL S.;DAVIS, DINAH LEA MARIE;LITTLE, HERBERT A.;MACFARLANE, DAVID VICTOR |
分类号 |
H04L9/30;H04L9/08;H04L9/14 |
主分类号 |
H04L9/30 |
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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