public function encryptSecret($public_key)
{
// Set GnuPG homedir to /tmp
putenv("GNUPGHOME=/tmp");
// Create new GnuPG instance
$gpg = new gnupg();
// Import given public key
$key = $gpg->import($public_key);
// Add imported key for encryption
$gpg->addencryptkey($key['fingerprint']);
// Encrypt the secret to a PGP message
$enc = $gpg->encrypt($this->secret);
// Clear the encryption key
$gpg->clearencryptkeys();
// Return the PGP message
return $enc;
}
