密码学常见困难问题，更新中密码学常见困难问题大整数因数分解问题DLP：TheDiscreteLogarithmProblem离散对数问题CDH：TheComputationalDiffie-HellmanProblem计算DH问题DDH：TheDecisionalDiffie-HellmanProblem决策Diffie-Hellman问题GDH：GapDiffie-HellmanBDH：双线性DH问题CBDH:ComptationalBilinearDiffie-HellmanProblem计算双线性DH问题DBDH：DecisionalBilinearDiffie-Hellman判断双线性