concrete/src/Api/ApiServiceProvider.php
private function getKey($handle)
    {
        if (!$this->keyPair) {
            $this->keyPair = $this->getKeyPair();
        }

        return isset($this->keyPair[$handle]) ? $this->keyPair[$handle] : null;
    }
private function getKey($handle)
    {
        if (!$this->keyPair) {
            $this->keyPair = $this->getKeyPair();
        }

        return isset($this->keyPair[$handle]) ? $this->keyPair[$handle] : null;
    }
private function getKey ( $ handle ) { if ( ! $ this -> keyPair ) { $ this -> keyPair = $ this -> getKeyPair ( ) ; } return isset ( $ this -> keyPair [ $ handle ] ) ? $ this -> keyPair [ $ handle ] : null ; }
Get a key by handle
@param $handle privatekey | publickey
@return string|null
Get a key by handle