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-显示GmSSL版本
-
-```
-gmssl version
-```
-
-生成SM2密钥
-```
-gmssl genkey -algorithm EC -out sm2key.pem \
-        -pkeyopt ec_paramgen_curve:sm2p256v1 \
-        -pkeyopt ec_param_enc:named_curve
-```
-
-打印SM2密钥
-```
-gmssl pkey -text -noout -in sm2key.pem
-```
-
-导出SM2公钥
-```
-gmssl pkey -in sm2key.pem -pubout -out sm2pubk.pem
-```
-
-生成SM2数字签名
-```
-echo "message to be signed" | \
-gmssl pkeyutl -sign -inkey sm2key.pem \
-        -pkeyopt ec_sign_algor:sm2 > sm2.sig
-```
-
-验证SM2数字签名
-```
-echo "message to be signed" | \
-gmssl pkeyutl -verify -inkey sm2pubk.pem \
-        -pkeyopt ec_sign_algor:sm2 -sigfile sm2.sig
-```
-