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基于CPK提出了两个安全的单轮组群密钥传输协议,且基于双因素认证———智能卡和口令。第一个协议使用中国剩余定理(CRT)隐蔽临时密钥,在CDH假设下可证安全;第二个协议使用秘密随机数矩阵(SRM)来组合生成临时密钥,并给出了SRM的安全更新方案。两个协议均具有较低的计算量和较高的应用价值。
Based on CPK, two secure single-round group key transport protocols are proposed and are based on two-factor authentication --- smart card and password. The first protocol uses the Chinese covert cryptosystem (CRT) to conceal the temporary key and is provably secure under the CDH assumption. The second protocol uses a combination of secret random number matrices (SRM) to generate the temporary key and gives the SRM security Update program. Both protocols have lower computational complexity and higher application value.