/**
* Defines the public key
*
* Some private key formats define the public exponent and some don't. Those that don't define it are problematic when
* used in certain contexts. For example, in SSH-2, RSA authentication works by sending the public key along with a
* message signed by the private key to the server. The SSH-2 server looks the public key up in an index of public keys
* and if it's present then proceeds to verify the signature. Problem is, if your private key doesn't include the public
* exponent this won't work unless you manually add the public exponent.
*
* Do note that when a new key is loaded the index will be cleared.
*
* Returns true on success, false on failure
*
* @see getPublicKey()
* @access public
* @param String $key
* @param Integer $type optional
* @return Boolean
*/
function setPublicKey($key, $type = RSA_PUBLIC_FORMAT_PKCS1)
{
$components = $this->_parseKey($key, $type);
if (empty($this->modulus) || !$this->modulus->equals($components['modulus'])) {
user_error('Trying to load a public key? Use loadKey() instead. It\'s called loadKey() and not loadPrivateKey() for a reason.', E_USER_NOTICE);
return false;
}
$this->publicExponent = $components['publicExponent'];
return true;
}
