preload.js

const { contextBridge, ipcRenderer } = require("electron");

// Do not expose Electron APIs to untrusted web content
// https://www.electronjs.org/docs/latest/tutorial/security#20-do-not-expose-electron-apis-to-untrusted-web-content
contextBridge.exposeInMainWorld("gpgAPI", {
	   // Main Windows APIs
       encryptMessage: (privateKeyId, recipient, trustKey, plaintext) =>
	       ipcRenderer.invoke("encrypt-message", { privateKeyId, recipient, trustKey, plaintext }),
       decryptMessage: (ciphertext) =>
	       ipcRenderer.invoke("decrypt-message", { ciphertext }),
       listPublicKeys: () =>
	       ipcRenderer.invoke("list-public-keys"),
       listPrivateKeys: () =>
	       ipcRenderer.invoke("list-private-keys"),
       retrievePublicKey: (keyId) =>
	       ipcRenderer.invoke("retrieve-public-key", { keyId }),
       retrieveSecretKey: (keyId) =>
	       ipcRenderer.invoke("retrieve-secret-key", { keyId }),

       // Edit Key Window APIs
       openEditKeyWindow: (keyId) => ipcRenderer.invoke('open-edit-key-window', keyId),
       getKeyDetails: (keyId) => ipcRenderer.invoke('get-key-details', keyId),
       updateKeyExpiry: (fingerprint, newExpiry) => ipcRenderer.invoke('update-key-expiry', { fingerprint, newExpiry }),
       setKeyTrust: (fingerprint, trustId) => ipcRenderer.invoke('set-key-trust', { fingerprint, trustId }),
       addSubkey: (keyId) => ipcRenderer.invoke('add-subkey', keyId),
       updateSubkeyExpiry: (primaryFingerprint, subkeyFingerprint, newExpiry) => ipcRenderer.invoke('update-subkey-expiry', { primaryFingerprint, subkeyFingerprint, newExpiry }),
       revokeSubkey: (subkeyId) => ipcRenderer.invoke('revoke-subkey', subkeyId),
       deleteSubkey: (subkeyId) => ipcRenderer.invoke('delete-subkey', subkeyId),
});