It seems that braid group is a kind of considerable public key cryptography platform, but current key agreement protocols, such as AAG,AAFG and BDH, all have different degrees of security weaknesses.

• 辫子群是一种新兴的适用于量子计算机时代的公钥密码平台,但是目前基于辫子群的密钥协商协议AAG、AAFG和BDH等都有不同程度的安全弱点。