SYSTEMS AND METHODS TO SECURELY GENERATE SHARED KEYS
    8.
    发明公开
    SYSTEMS AND METHODS TO SECURELY GENERATE SHARED KEYS 有权
    创建安全共享密钥的系统和方法

    公开(公告)号:EP1747638A1

    公开(公告)日:2007-01-31

    申请号:EP05742539.9

    申请日:2005-05-02

    IPC分类号: H04L9/30 H04L9/14

    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.