Omnipay\Alipay\Common\Signer::convertKey PHP Метод

    public function convertKey($key, $type)
    {
        $lines = [];
        if ($type == self::KEY_TYPE_PUBLIC) {
            $lines[] = '-----BEGIN PUBLIC KEY-----';
        } else {
            $lines[] = '-----BEGIN RSA PRIVATE KEY-----';
        }
        for ($i = 0; $i < strlen($key); $i += 64) {
            $lines[] = trim(substr($key, $i, 64));
        }
        if ($type == self::KEY_TYPE_PUBLIC) {
            $lines[] = '-----END PUBLIC KEY-----';
        } else {
            $lines[] = '-----END RSA PRIVATE KEY-----';
        }
        return implode("\n", $lines);
    }

    public function testConvert()
    {
        $key = 'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCnxj/9qwVfgoUh/y2W89L6BkRAFljhNhgPdyPuBV64bfQNN1PjbCzkIM6qRdKBoLPXmKKMiFYnkd6rAoprih3/PrQEB/VsW8OoM8fxn67UDYuyBTqA23MML9q1+ilIZwBC2AQ2UBVOrFXfFl75p6/B5KsiNG9zpgmLCUYuLkxpLQIDAQAB';
        $signer = new Signer();
        $key = $signer->convertKey($key, Signer::KEY_TYPE_PUBLIC);
        $this->assertEquals('-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCnxj/9qwVfgoUh/y2W89L6BkRA
FljhNhgPdyPuBV64bfQNN1PjbCzkIM6qRdKBoLPXmKKMiFYnkd6rAoprih3/PrQE
B/VsW8OoM8fxn67UDYuyBTqA23MML9q1+ilIZwBC2AQ2UBVOrFXfFl75p6/B5Ksi
NG9zpgmLCUYuLkxpLQIDAQAB
-----END PUBLIC KEY-----', $key);
    }