SM2 公私钥生成

本机需要安装openssl

生成私钥：

$ openssl ecparam -genkey -name SM2 -out SM2PrivateKey.pem

生成结果：

$ cat SM2PrivateKey.pem
-----BEGIN EC PARAMETERS-----
BggqgRzPVQGCLQ==
-----END EC PARAMETERS-----
-----BEGIN EC PRIVATE KEY-----
MHcCAQEEIIbHqfHf2cWCi9Qi76elQTdZGDeOA4z5029y1Rsq9sv8oAoGCCqBHM9V
AYItoUQDQgAEiLCv2e9tYqfevPl6kae15+w6bZU6iFCTpSFu4MLbrHlWIqVw91Vk
Z+uMH3jfFAZ4Ch18CtwahQmy3+5B62DiGg==
-----END EC PRIVATE KEY-----

私钥转换为pkcs8

openssl pkcs8 -topk8 -inform PEM -in sm2PriKey.pem -outform pem -nocrypt -out sm2PriKeyPkcs8.pem

生成公钥：

openssl ec -in SM2PrivateKey.pem -pubout -out SM2PublicKey.pem

生成结果：

$ cat SM2PrivateKey.pem
-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoEcz1UBgi0DQgAEiLCv2e9tYqfevPl6kae15+w6bZU6
iFCTpSFu4MLbrHlWIqVw91VkZ+uMH3jfFAZ4Ch18CtwahQmy3+5B62DiGg==
-----END PUBLIC KEY-----