证书生成（keystore、truststore、.crt、.key）

https://blog.csdn.net/leadseczgw01/article/details/88844413

https://blog.csdn.net/qq_28450911/article/details/114120752?spm=1001.2101.3001.6661.1&utm_medium=distribute.pc_relevant_t0.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-1-114120752-blog-119898411.pc_relevant_aa_2&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-1-114120752-blog-119898411.pc_relevant_aa_2&utm_relevant_index=1