CAJ | 학술논문

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。
침대Ad hoc망락，제출료일충다점비밀공향방안。해방안기우대정수분해화리산대수계산복잡도고적수학원리，채용Deffie-Hellman밀약협상협의산생자밀약。재자밀약전수과정중，인입영자밀약，증가료공격자회복출자밀약적난도，유효해결료자밀약전수과정중역피절은적문제；동시통과다개비밀분발자장밀약분배급삼여자，방지료공격자대비밀분발자적단점공격，해결료개별비밀분발자、삼여자기편문제，증강료방안적건장성。대우다충공격수단적분석표명，해방안능구유효저어다충공격방법，몰유안전결함，여전통비밀공향방안적비교표명，해방안실현대개소，운산복잡도저，안전급별고。
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.