func (c *Counter) Add() {
	c.mu.Lock()
	defer c.mu.Unlock()
	c.cnt++
}
Add increments the counter.
package main
import (
	"errors"
	"fmt"
	"io"
	"log"
	"net"
	"os"
	"sync"
	"github.com/open-quantum-safe/liboqs-go/oqs"
)
type Counter struct {
	mu  sync.Mutex
	cnt uint64
}