OpenSSL Self-Signed Certificate

Internal

• Public Key Security

Example

openssl x509 -noout -text -in ./self-signed-server-certificate.pem

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            b4:0d:11:24:d4:1b:8c:44
    Signature Algorithm: sha256WithRSAEncryption
        Issuer: C=US, L=Menlo Park, O=Nova Ordis LLC, CN=www.example.com
        Validity
            Not Before: Apr  8 09:27:40 2018 GMT
            Not After : Jun  7 09:27:40 2037 GMT
        Subject: C=US, L=Menlo Park, O=Nova Ordis LLC, CN=www.example.com
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (2048 bit)
                Modulus:
                    00:ce:ab:8f:f6:2f:f1:4b:63:c6:ed:ea:8f:25:30:
                    72:f9:fb:d6:5a:93:32:0e:20:6d:64:f6:55:37:09:
                    f6:61:f4:f7:e4:9b:89:96:f0:91:99:72:85:28:46:
                    90:8c:4e:30:5e:43:48:1f:c4:ce:d7:4f:3d:bf:5d:
                    71:e9:16:fc:dd:92:09:a8:dd:1b:7a:d5:35:19:24:
                    70:35:85:c8:e8:6d:77:e6:0d:7f:84:cd:06:fb:26:
                    47:db:a4:fc:53:0a:fe:e4:bf:a4:ac:70:a6:99:db:
                    94:c5:74:e2:48:80:6f:07:cb:ab:7a:f3:63:8d:af:
                    e2:48:bd:1f:a4:c5:31:85:63:9b:93:7a:15:8f:fd:
                    c4:b0:47:b0:04:ad:18:3f:a0:d5:ca:7e:2a:a4:da:
                    e3:5e:dc:64:d1:06:3a:69:83:85:87:e9:26:bb:02:
                    17:c2:0f:ab:78:6b:de:93:18:00:1e:5c:47:e7:3e:
                    45:27:fc:3f:4a:a6:50:33:f3:97:b1:c6:be:e3:d3:
                    4c:ef:88:ac:1e:dd:e9:ee:97:30:48:5d:81:b7:fd:
                    b8:d9:93:a9:3a:d2:2a:a7:5b:57:e0:24:f9:c1:31:
                    5a:39:85:16:f7:45:15:09:da:9b:8c:53:73:08:36:
                    8b:e1:10:8a:56:3f:f2:ce:a9:6d:ca:02:62:b2:ae:
                    40:7b
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Subject Key Identifier:
                B2:DA:94:80:CE:E8:61:DA:CA:15:85:97:A8:D8:A1:E4:37:A7:5A:9D
            X509v3 Authority Key Identifier:
                keyid:B2:DA:94:80:CE:E8:61:DA:CA:15:85:97:A8:D8:A1:E4:37:A7:5A:9D

            X509v3 Basic Constraints:
                CA:TRUE
    Signature Algorithm: sha256WithRSAEncryption
         25:68:ce:2b:28:60:9f:29:d6:14:b5:1f:3e:8e:dc:2c:fe:0a:
         13:19:ca:ca:27:e8:1e:4c:7f:fe:3c:25:5b:5c:b5:94:c6:56:
         cd:11:a2:25:a9:a9:5d:7d:54:a6:5a:a9:ed:10:42:9c:1a:a7:
         5a:8c:9e:e8:9e:77:d4:77:93:d2:04:8a:3e:6c:5a:4f:31:c6:
         c0:02:c9:76:e1:80:59:cc:fe:e0:59:dd:72:41:f0:14:c1:b0:
         0b:85:5c:46:3d:a0:a4:40:77:5d:e8:e0:5b:f9:a5:4e:21:83:
         13:e6:38:c0:8d:39:51:95:1f:83:c7:61:14:ed:cb:03:27:34:
         fa:49:a8:17:15:f0:64:77:19:b8:f2:28:e5:17:a7:04:5a:1d:
         63:18:27:14:6d:95:bd:6a:ec:db:7e:ee:f8:eb:53:00:a5:e2:
         07:ff:9d:1d:c8:b8:db:da:ea:71:63:6d:28:10:81:59:ec:86:
         88:d9:e5:bf:45:32:8a:b0:2b:06:4b:25:75:d7:b1:71:33:ef:
         6a:0d:34:b8:5e:15:19:07:07:65:49:16:61:81:d2:2e:f0:ab:
         da:85:e6:1b:dc:9f:3c:5a:89:6f:65:e4:c1:ce:dc:f7:66:4d:
         f1:1d:fe:8b:f4:5f:aa:0a:5d:68:ca:68:00:c9:b3:0a:f8:b9:
         e8:dc:76:5c