自己署名証明書（CA 含む）を簡単に作成する方法 - Qiita$ openssl x509 -text -noout -in minica.pem Certificate: Data: Version: 3 (0x2) Serial Number: 6b:f5:aa:ab:5d:00:bc:34 Signature Algorithm: sha256WithRSAEncryption Issuer: CN=minica root ca 6bf5aa Validity Not Before: Nov 9 03:25:39 2018 GMT Not After : Nov 9 03:25:39 2118 GMT Subject: CN=minica root ca 6bf5aa Subject Public Key Info: Public Key Algorithm: rsaEncryption RSA Public Key: (2048 bit) M
