Public key fingerprint calculator

Open Public key fingerprint calculator on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.

Tool capabilities

{
  "id": "public-key-fingerprint-calculator",
  "category": "developer-tools",
  "built": true,
  "requirements": "Input is exactly one key, certificate or certificate request of up to 200000 characters, with DER data up to 65536 bytes. Text with more than one PEM block, such as a full chain, is refused. Parsing and hashing run locally in your browser with Web Crypto. Download the JSON report with every fingerprint format.",
  "implementation": {
    "fields": [],
    "registrationFamily": "crypto-formats-reference",
    "inputMaxLength": 200000,
    "inputErrorCode": "CRYPTO_FORMATS_REFERENCE_TOO_LONG",
    "note": "Runs in your browser. Accepts one PEM public key, certificate or certificate request, an OpenSSH public key line or a public JWK of up to 200000 characters.",
    "experience": {
      "automatic": false,
      "single": false,
      "inputMaxLength": 200000,
      "inputMode": "text",
      "label": "Public key or certificate",
      "placeholder": "-----BEGIN PUBLIC KEY-----",
      "help": "Paste PEM text, an ssh-ed25519 or ssh-rsa line, or a public JWK. Up to 200,000 characters. Review the settings before running.",
      "helpParts": [
        "Paste PEM text, an ssh-ed25519 or ssh-rsa line, or a public JWK.",
        "Up to 200,000 characters.",
        "Review the settings before running."
      ],
      "action": null
    },
    "mode": "explicit",
    "interactive": false
  },
  "execution": "Browser interface",
  "api": null,
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}

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