| 摘要 |
<p>The present invention relates to the fields of communications and security and protection. Disclosed are a key distribution method, machine-to-machine (M2M) platform and M2M terminal, designed to solve the problem in the prior art that a key distribution method cannot balance both distribution efficiency and distribution security. The key distribution method, the M2M platform and the M2M terminal of the present invention classify different security levels based on security level classification criteria, then distribute keys according to the security levels, so that a key with high distribution efficiency is distributed in the case of a low security requirement, and a key with high security is distributed in the case of a high security requirement, thus balancing key distribution efficiency and key distribution security.</p> |
