Security Manager Protocol (SMP) 安全管理协议
•Performs authentication and key management 执行身份验证和密钥管理•Uses AES-128 as the encryption algorithm for security procedures 为安全程序使用aes - 128加密算法
•Defines protocol to setup secure link 定义了协议设置安全的链接
•Works with GAP to manage relationships between devices:
和GAP协作管理两个设备之间的关系：
–Pairing –encryption between two devices once a connection has been established between them
配对——一旦两个设备建立连接，对其加密
–Authentication –verification that a peer device can be trusted, providing protection against “Man-in-the-Middle” attacks
授权——提供保护，免受”中间人“攻击
–Bonding –long-term relationship between devices; security and identity information is saved for re-use next time the devices are connected
绑定
总结：SMP对两个设备进行配对、授权、绑定等管理。GAP需要和SMP协作。
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