CryptoKey: extractable Eigenschaft

// Export the given key and write it into the "exported-key" space. async function exportCryptoKey(key) { const exported = await window.crypto.subtle.exportKey("raw", key); const exportedKeyBuffer = new Uint8Array(exported); const exportKeyOutput = document.querySelector(".exported-key"); exportKeyOutput.textContent = `[${exportedKeyBuffer}]`; } // Enable or disable the exportButton if the key is extractable or not function setExportButton(key) { const exportButton = document.querySelector(".raw"); // Disable the button if the key is not extractable exportButton.disabled = !key.extractable; if (key.extractable) { // Add an event listener to extract the key exportButton.addEventListener("click", () => { exportCryptoKey(key); }); } } // Generate an encrypt/decrypt secret key, // then enable and set up an event listener on the "Export" button. window.crypto.subtle .generateKey( { name: "AES-GCM", length: 256, }, true, ["encrypt", "decrypt"], ) .then(setExportButton(key));