nextcloud / server

	 */

	public function validateShareKey() {

		$shareKey = $this->getPublicShareKey();

		if (empty($shareKey)) {

			$keyPair = $this->crypt->createKeyPair();

			// Save public key

			$this->keyStorage->setSystemUserKey(

				$this->publicShareKeyId . '.publicKey', $keyPair['publicKey'],

				Encryption::ID);

			// Encrypt private key empty passphrase

			$encryptedKey = $this->crypt->encryptPrivateKey($keyPair['privateKey'], '');

			$header = $this->crypt->generateHeader();

			$this->setSystemPrivateKey($this->publicShareKeyId, $header . $encryptedKey);

		}

	}

	/**

		}

		$publicMasterKey = $this->getPublicMasterKey();

		if (empty($publicMasterKey)) {

			$keyPair = $this->crypt->createKeyPair();

			// Save public key

			$this->keyStorage->setSystemUserKey(

				$this->masterKeyId . '.publicKey', $keyPair['publicKey'],

				Encryption::ID);

			// Encrypt private key with system password

			$encryptedKey = $this->crypt->encryptPrivateKey($keyPair['privateKey'], $this->getMasterKeyPassword(), $this->masterKeyId);

			$header = $this->crypt->generateHeader();

			$this->setSystemPrivateKey($this->masterKeyId, $header . $encryptedKey);

		}

		if (!$this->session->isPrivateKeySet()) {

			$masterKey = $this->getSystemPrivateKey($this->masterKeyId);