Adhoc网络的多点秘密共享方案及其应用

A Multi-point Secret Sharing Scheme in Ad hoc Networks

针对Ad hoc网络,提出了一种多点秘密共享方案。该方案基于大整数分解和离散对数计算复杂度高的数学原理,采用Deffie-Hellman密钥协商协议产生子密钥。在子密钥传输过程中,引入影子密钥,增加了攻击者恢复出子密钥的难度,有效解决了子密钥传输过程中易被窃听的问题;同时通过多个秘密分发者将密钥分配给参与者,防止了攻击者对秘密分发者的单点攻击,解决了个别秘密分发者、参与者欺骗问题,增强了方案的健壮性。对于多种攻击手段的分析表明,该方案能够有效抵御多种攻击方法,没有安全缺陷,与传统秘密共享方案的比较表明,该方案实现代价小,运算复杂度低,安全级别高。

A multi-point new secret sharing scheme was proposed for Ad hoc networks .The scheme based on the complexi-ty of difficult big integer factorization and discrete logarithm computation .The Deffie-Hellman key agreement protocol was a-dopted to create sub-key.The shadow key was introduced in the sub -key transfer process , which increased the difficulty of at-tacking.Thus the scheme can effective solve the problem of encryption of sub -key.At the same time, multi-point secret dis-tribution can prevent the attacker from single point attacking , which can ensure the robustness of the scheme .Through the analy-sis, it was found that the multi -point secret sharing scheme can better meet the needs of application with higher safety and effec -tiveness.