curl --request POST \
  --url https://api.iotools.cloud/v1/tool/ssl-certificate-decoder \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "certPem": "-----BEGIN CERTIFICATE-----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\n-----END CERTIFICATE-----",
  "referenceTime": "2024-01-01T00:00:00Z"
}
'

{
  "tool": "ssl-certificate-decoder",
  "tool_version": "1.0.1",
  "outputs": {
    "warnings": [
      {
        "severity": "Warning",
        "message": "This is a self-signed certificate (Subject = Issuer)."
      }
    ],
    "subject": [
      {
        "field": "C (Country)",
        "value": "US"
      },
      {
        "field": "O (Organization)",
        "value": "Internet Security Research Group"
      },
      {
        "field": "CN (Common Name)",
        "value": "ISRG Root X1"
      }
    ],
    "issuer": [
      {
        "field": "C (Country)",
        "value": "US"
      },
      {
        "field": "O (Organization)",
        "value": "Internet Security Research Group"
      },
      {
        "field": "CN (Common Name)",
        "value": "ISRG Root X1"
      }
    ],
    "validity": [
      {
        "field": "Not Before",
        "value": "2015-06-04T11:04:38Z"
      },
      {
        "field": "Not After",
        "value": "2035-06-04T11:04:38Z"
      },
      {
        "field": "Status",
        "value": "Valid (expires in 4172d 11h)"
      }
    ],
    "details": [
      {
        "property": "Version",
        "value": "v3"
      },
      {
        "property": "Serial Number",
        "value": "00:82:10:CF:B0:D2:40:E3:59:44:63:E0:BB:63:82:8B:00"
      },
      {
        "property": "Signature Algorithm",
        "value": "SHA-256 with RSA"
      },
      {
        "property": "Public Key Algorithm",
        "value": "RSA"
      },
      {
        "property": "Public Key Size",
        "value": "4096 bits"
      },
      {
        "property": "Self-Signed",
        "value": "Yes"
      }
    ],
    "extensions": [
      {
        "extension": "Key Usage (critical)",
        "value": "Certificate Sign, CRL Sign"
      },
      {
        "extension": "Basic Constraints (critical)",
        "value": "CA: TRUE"
      },
      {
        "extension": "Subject Key Identifier",
        "value": "041479b459e67bb6e5e40173800888c81a58f6e99b6e"
      }
    ],
    "fingerprints": [
      {
        "algorithm": "SHA-256",
        "fingerprint": "96:BC:EC:06:26:49:76:F3:74:60:77:9A:CF:28:C5:A7:CF:E8:A3:C0:AA:E1:1A:8F:FC:EE:05:C0:BD:DF:08:C6"
      },
      {
        "algorithm": "SHA-1",
        "fingerprint": "CA:BD:2A:79:A1:07:6A:31:F2:1D:25:36:35:CB:03:9D:43:29:A5:E8"
      }
    ]
  },
  "credits_used": 3,
  "credits_remaining": null
}