Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number: 100000001 (0x5f5e101)
    Signature Algorithm: ecdsa-with-SHA512
        Issuer: C=CZ, O=První certifikační autorita, a.s., organizationIdentifier=NTRCZ-26439395, CN=I.CA Root CA/ECC 12/2016
        Validity
            Not Before: Dec  7 11:00:00 2016 GMT
            Not After : Dec  7 11:00:00 2041 GMT
        Subject: C=CZ, O=První certifikační autorita, a.s., organizationIdentifier=NTRCZ-26439395, CN=I.CA Root CA/ECC 12/2016
        Subject Public Key Info:
            Public Key Algorithm: id-ecPublicKey
                Public-Key: (521 bit)
                pub: 
                    04:01:fb:51:05:bd:9d:82:1c:57:b3:a5:31:f9:cf:
                    b0:37:d9:fa:e5:ce:e3:2d:95:94:cc:bb:72:df:be:
                    8e:34:81:84:b7:24:41:29:16:7a:70:94:5b:d2:73:
                    cd:ec:c6:a1:21:ad:6b:a7:ee:b6:27:d6:8d:30:7e:
                    69:69:b0:f2:33:0f:da:01:a8:26:93:e8:e6:ae:98:
                    01:49:f3:b1:f7:b4:67:e1:89:23:ae:ef:68:24:c6:
                    29:78:2d:88:a0:39:4f:43:db:c1:df:f2:54:fc:41:
                    7a:97:33:bf:d7:4c:1d:2f:5b:ca:a0:e4:75:06:69:
                    18:16:ee:9f:eb:0c:e2:89:d9:3d:b6:67:d0
                ASN1 OID: secp521r1
        X509v3 extensions:
            X509v3 Key Usage: critical
                Certificate Sign, CRL Sign
            X509v3 Basic Constraints: critical
                CA:TRUE
            X509v3 Subject Key Identifier: 
                75:D8:37:33:04:F3:9D:D0:EB:1D:0A:8F:E7:E6:26:CC:D0:4D:2B:2A
            X509v3 Certificate Policies: 
                Policy: X509v3 Any Policy

    Signature Algorithm: ecdsa-with-SHA512
         30:81:87:02:41:1a:27:a8:a0:69:47:c6:3b:43:89:b5:92:c2:
         b5:7d:f6:d1:eb:65:39:94:e0:4b:2f:19:be:2f:72:d9:54:96:
         69:e1:47:01:01:a7:8b:6c:7f:c3:c5:f1:16:b6:4d:ba:30:86:
         04:b4:cb:f3:74:5d:41:fd:0e:7d:08:ed:e8:a7:da:5d:02:42:
         01:86:bb:28:97:f2:df:df:63:3b:9e:de:1f:86:bd:eb:ea:4b:
         49:70:da:7e:04:f1:e6:b9:c8:b5:0a:34:cd:00:07:67:98:55:
         3c:47:93:05:af:6e:03:a0:97:c9:f0:0a:db:13:4a:ad:47:95:
         e2:48:b2:94:96:38:fb:7d:17:73:1f:d2