cic-staff-client/src/app/_helpers/pgp-key-store.ts

import { KeyStore } from 'cic-client-meta';
const openpgp = require('openpgp');
const keyring = new openpgp.Keyring();

interface MutableKeyStore extends KeyStore {
  loadKeyring(): Promise<void>;
  importKeyPair(publicKey: any, privateKey: any): Promise<void>;
  importPublicKey(publicKey: any): Promise<void>;
  importPrivateKey(privateKey: any): Promise<void>;
  getPublicKeys(): Array<any>;
  getTrustedKeys(): Array<any>;
  getTrustedActiveKeys(): Array<any>;
  getEncryptKeys(): Array<any>;
  getPrivateKeys(): Array<any>;
  getPrivateKey(): any;
  isValidKey(key: any): boolean;
  getFingerprint(): string;
  getKeyId(key: any): string;
  getPrivateKeyId(): string;
  getKeysForId(keyId: string): Array<any>;
  getPublicKeyForId(keyId: string): any;
  getPrivateKeyForId(keyId: string): any;
  getPublicKeyForSubkeyId(subkeyId: string): any;
  getPublicKeysForAddress(address: string): Array<any>;
  removeKeysForId(keyId: string): Array<any>;
  removePublicKeyForId(keyId: string): any;
  removePublicKey(publicKey: any): any;
  clearKeysInKeyring(): void;
  sign(plainText: string): Promise<any>;
}

class MutablePgpKeyStore implements MutableKeyStore{

  async loadKeyring(): Promise<void> {
    await keyring.load();
    // clear any keys already in the keychain
    // keyring.clear();
    await keyring.store();
  }

  async importKeyPair(publicKey: any, privateKey: any): Promise<void> {
    await keyring.publicKeys.importKey(publicKey);
    await keyring.privateKeys.importKey(privateKey);
  }

  async importPublicKey(publicKey: any): Promise<void> {
    await keyring.publicKeys.importKey(publicKey);
  }

  async importPrivateKey(privateKey: any): Promise<void> {
    await keyring.privateKeys.importKey(privateKey);
  }

  getPublicKeys(): Array<any> {
    return keyring.publicKeys.keys;
  }

  getTrustedKeys(): Array<any> {
    return keyring.publicKeys.keys;
  }

  getTrustedActiveKeys(): Array<any> {
    return keyring.publicKeys.keys;
  }

  getEncryptKeys(): Array<any> {
    return [];
  }

  getPrivateKeys(): Array<any> {
    return keyring.privateKeys.keys;
  }

  getPrivateKey(): any {
    return keyring.privateKeys.keys[0];
  }

  isValidKey(key): boolean {
    return typeof key === openpgp.Key;
  }

  getFingerprint(): string {
    return keyring.privateKeys.keys[0].keyPacket.fingerprint;
  }

  getKeyId(key: any): string {
    return key.getKeyId().toHex();
  }

  getPrivateKeyId(): string {
    return keyring.privateKeys.keys[0].getKeyId().toHex();
  }

  getKeysForId(keyId: string): Array<any> {
    return keyring.getKeysForId(keyId);
  }

  getPublicKeyForId(keyId): any {
    return keyring.publicKeys.getForId(keyId);
  }

  getPrivateKeyForId(keyId): any {
    return keyring.privateKeys.getForId(keyId);
  }

  getPublicKeyForSubkeyId(subkeyId): any {
    return keyring.publicKeys.getForId(subkeyId, true);
  }

  getPublicKeysForAddress(address): Array<any> {
    return keyring.publicKeys.getForAddress(address);
  }

  removeKeysForId(keyId): Array<any> {
    return keyring.removeKeysForId(keyId);
  }

  removePublicKeyForId(keyId): any {
    return keyring.publicKeys.removeForId(keyId);
  }

  removePublicKey(publicKey: any): any {
    const keyId =  publicKey.getKeyId().toHex();
    return keyring.publicKeys.removeForId(keyId);
  }

  clearKeysInKeyring(): void {
    keyring.clear();
  }

  async sign(plainText): Promise<any> {
    const privateKey = this.getPrivateKey();
    if (!privateKey.isDecrypted()) {
      const password = window.prompt('password');
      await privateKey.decrypt(password);
    }
    const opts = {
      message: openpgp.message.fromText(plainText),
      privateKeys: [privateKey],
      detached: true,
    };
    const signatureObject = await openpgp.sign(opts);
    return signatureObject.signature;
  }
}

export {
  MutablePgpKeyStore,
  MutableKeyStore
};