自由的公钥发布 KU KU KUa KU b B KUai KUb KU KUb Figure 10.1 Uncontrolled Public Key Distribution ad Can futer Science Technolog fy@ustc.edu.cn 现代密码学理论与实践 5/59mfy@ustc.edu.cn 现代密码学理论与实践 5/59