文中针对组通信的特点,在深入研究已有组密钥管理认证算法优缺点的基础上,利用哈希函数、对称密码和捎带技术,给出了一种更为高效的组密钥认证方法,并从存储、计算和通信开销三方面与已有方法进行了详细比较。相比之下,采用该方法的优点是能够完全摆脱繁琐的基于公钥签名的认证计算,较适用于用户计算资源良莠不齐的大型动态组的密钥管理。 In this paper, based on the characteristics of group communication, based on the deep research on the advantages and disadvantages of existing group key management authentication algorithms, a more efficient group key authentication method is given by using hash function, symmetric password and piggybacking technology. And compared with the existing methods from three aspects of storage, computing and communication overhead. In contrast, this method has the advantage of being able to completely get rid of the cumbersome certification calculation based on the public key signature and is suitable for the key management of the large dynamic group whose user computing resources are mixed.