openssl x509 -in /etc/letsencrypt/live/vpsvhb.lycee-basch.fr/fullchain.pem -noout -text
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            05:64:83:a1:61:8e:10:07:64:e3:8a:47:28:e9:d8:50:43:c8
        Signature Algorithm: ecdsa-with-SHA384
        Issuer: C = US, O = Let's Encrypt, CN = E7
        Validity
            Not Before: Dec 25 08:07:41 2025 GMT
            Not After : Mar 25 08:07:40 2026 GMT
        Subject: CN = vpsvhb.lycee-basch.fr
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (256 bit)
                pub:
                    04:98:10:79:6f:f8:95:3c:7b:6a:14:d2:26:4e:76:
                    ac:bb:9f:92:47:a3:0b:1f:6c:4c:d9:bb:ff:5d:e7:
                    04:87:f3:38:be:aa:99:88:f7:df:f1:aa:0b:d8:c5:
                    61:d1:6e:88:b1:35:17:39:83:6f:8d:19:86:f8:ee:
                    62:0a:df:46:f0
                ASN1 OID: prime256v1
                NIST CURVE: P-256
        X509v3 extensions:
            X509v3 Key Usage: critical
                Digital Signature
            X509v3 Extended Key Usage:
                TLS Web Server Authentication, TLS Web Client Authentication
            X509v3 Basic Constraints: critical
                CA:FALSE
            X509v3 Subject Key Identifier:
                68:FA:F5:6D:BD:FC:B5:52:6E:19:E2:B0:F8:DC:DB:A1:99:43:1F:01
            X509v3 Authority Key Identifier:
                AE:48:9E:DC:87:1D:44:A0:6F:DA:A2:E5:60:74:04:78:C2:9C:00:80
            Authority Information Access:
                CA Issuers - URI:http://e7.i.lencr.org/
            X509v3 Subject Alternative Name:
                DNS:vpsvhb.lycee-basch.fr
            X509v3 Certificate Policies:
                Policy: 2.23.140.1.2.1
            X509v3 CRL Distribution Points:
                Full Name:
                  URI:http://e7.c.lencr.org/73.crl
            CT Precertificate SCTs:
                Signed Certificate Timestamp:
                    Version   : v1 (0x0)
                    Log ID    : 96:97:64:BF:55:58:97:AD:F7:43:87:68:37:08:42:77:
                                E9:F0:3A:D5:F6:A4:F3:36:6E:46:A4:3F:0F:CA:A9:C6
                    Timestamp : Dec 25 09:06:11.630 2025 GMT
                    Extensions: none
                    Signature : ecdsa-with-SHA256
                                30:45:02:20:6C:D3:A7:01:54:41:EE:66:38:EB:B2:28:
                                C0:61:9E:C0:56:4E:89:13:1F:A0:DD:4D:12:84:F0:83:
                                FC:B0:D2:FA:02:21:00:F0:F3:48:CA:9A:F3:F0:55:32:
                                74:70:DF:B0:9A:57:81:DD:8F:54:6D:14:B8:62:38:50:
                                B9:77:0F:43:8D:B4:DE
                Signed Certificate Timestamp:
                    Version   : v1 (0x0)
                    Log ID    : E3:23:8D:F2:8D:A2:88:E0:AA:E0:AC:F0:FA:90:C9:85:
                                F0:B6:BF:F5:D2:A5:27:B0:01:FC:1C:44:58:C4:B6:E8
                    Timestamp : Dec 25 09:06:12.523 2025 GMT
                    Extensions: 00:00:05:00:2D:33:CB:2D
                    Signature : ecdsa-with-SHA256
                                30:44:02:20:48:F6:BE:02:4F:F0:E8:DD:4F:9B:5E:CF:
                                63:4F:BD:D9:5A:3A:F7:D1:96:DA:6B:76:20:0E:EA:7B:
                                3A:7D:ED:68:02:20:1E:C2:36:3B:96:91:2E:2F:3A:C7:
                                71:AA:65:EB:45:4B:01:84:8C:72:A6:DF:3C:E1:31:74:
                                A7:4E:1E:11:40:55
    Signature Algorithm: ecdsa-with-SHA384
    Signature Value:
        30:65:02:31:00:a5:b2:05:38:33:d4:ca:46:6a:c1:32:82:b6:
        62:3e:7f:87:70:81:5f:80:1c:22:6a:49:77:8b:1b:ee:c5:71:
        db:40:f7:b0:77:a8:46:29:58:fc:c8:ea:51:37:01:76:11:02:
        30:56:56:ed:91:c6:58:77:21:bc:86:13:da:4d:00:b3:be:b2:
        39:69:d8:4a:3c:e8:56:a6:7a:5f:ef:46:05:01:d8:ee:8b:9d:
        37:9c:95:af:9b:56:ff:7d:a1:5c:67:ad:7c