发明授权
- 专利标题： Systems and methods to securely generate shared keys
- 专利标题（中）： 安全生成共享密钥的系统和方法
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申请号： US13530593申请日： 2012-06-22
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公开(公告)号： US08693695B2公开(公告)日： 2014-04-08
- 发明人: Michael K. Brown , Herbert A. Little , David Victor MacFarlane , Michael S. Brown , Dinah Lea Marie Davis
- 申请人： Michael K. Brown , Herbert A. Little , David Victor MacFarlane , Michael S. Brown , Dinah Lea Marie Davis
- 申请人地址： CA Waterloo, Ontario
- 专利权人： BlackBerry Limited
- 当前专利权人： BlackBerry Limited
- 当前专利权人地址： CA Waterloo, Ontario
- 代理机构： Integral Intellectual Property Inc.
- 代理商 Miriam Paton
- 主分类号： H04L9/08
- IPC分类号： H04L9/08
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.
公开/授权文献
- US20120257746A1 Systems and Methods to Securely Generate Shared Keys 公开/授权日：2012-10-11
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