OpenSSL命令生成椭圆曲线密钥

使用OpenSSL生成椭圆曲线密钥

生成secp256k1椭圆曲线参数

openssl ecparam -out demo.param -name secp256k1

输出类似

-----BEGIN EC PARAMETERS-----
BgUrgQQACg==
-----END EC PARAMETERS-----

生成椭圆曲线密钥

openssl genpkey -paramfile demo.param -out demo.pem

输出类似

-----BEGIN PRIVATE KEY-----
MIGEAgEAMBAGByqGSM49AgEGBSuBBAAKBG0wawIBAQQgQ3w1tYqM23IWEBlIJRNA
/s9297Kt30Cn3eFkkWbUitKhRANCAARPu3+IOeXERFQY0jEU2i5gd79LieyxPU4x
a9uB274kutATCn0hX0OXBwKeZ8/OKnmEy61zGWtbtWLaxRnSkDeg
-----END PRIVATE KEY-----

解析密钥文件

openssl ec -in demo.pem -text -noout

输出类似

read EC key
Private-Key: (256 bit)
priv:
    43:7c:35:b5:8a:8c:db:72:16:10:19:48:25:13:40:
    fe:cf:76:f7:b2:ad:df:40:a7:dd:e1:64:91:66:d4:
    8a:d2
pub:
    04:4f:bb:7f:88:39:e5:c4:44:54:18:d2:31:14:da:
    2e:60:77:bf:4b:89:ec:b1:3d:4e:31:6b:db:81:db:
    be:24:ba:d0:13:0a:7d:21:5f:43:97:07:02:9e:67:
    cf:ce:2a:79:84:cb:ad:73:19:6b:5b:b5:62:da:c5:
    19:d2:90:37:a0
ASN1 OID: secp256k1