src/Robin/Ntlm/Crypt/Random/OpenSslRandomByteGenerator.php
public function generate($size)
    {
        trigger_error(
            'This implementation is deprecated, as it can be insecure in some circumstances',
            E_USER_DEPRECATED
        );

        $generated = openssl_random_pseudo_bytes($size, $strong);

        if (false === $generated || strlen($generated) !== $size || false === $strong) {
            throw CryptographicFailureException::forReasonCode(
                CryptographicFailureException::CODE_FOR_RANDOM_DATA_GENERATION_FAILURE
            );
        }

        return $generated;
    }
public function generate($size)
    {
        trigger_error(
            'This implementation is deprecated, as it can be insecure in some circumstances',
            E_USER_DEPRECATED
        );

        $generated = openssl_random_pseudo_bytes($size, $strong);

        if (false === $generated || strlen($generated) !== $size || false === $strong) {
            throw CryptographicFailureException::forReasonCode(
                CryptographicFailureException::CODE_FOR_RANDOM_DATA_GENERATION_FAILURE
            );
        }

        return $generated;
    }
{@inheritDoc}

@deprecated This implementation is deprecated, as it's been found
to be insecure. Use {@link RandomByteGeneratorInterface} instead.