owncloud / core

	 * @return mixed

	 * @throws PrivateKeyMissingException

	 */

	public function getPrivateKey($userId) {

		$privateKey = $this->keyStorage->getUserKey($userId,

			$this->privateKeyId, Encryption::ID);

		if (strlen($privateKey) !== 0) {

			return $privateKey;

		}

		throw new PrivateKeyMissingException($userId);

	}

	/**

	 * @param $path

	 * @return mixed

	 * @throws PublicKeyMissingException

	 */

	public function getPublicKey($userId) {

		$publicKey = $this->keyStorage->getUserKey($userId, $this->publicKeyId, Encryption::ID);

		if (strlen($publicKey) !== 0) {

			return $publicKey;

		}

		throw new PublicKeyMissingException($userId);

	}

	public function getPublicShareKeyId() {

		return $this->publicShareKeyId;