mhmxs

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDAQEegZ89+oYcWf8le3SxyvSdiQUhkp5SfhUdltf78lxWlUVnHrsfLfRfAX2CnRKndnXjKj0ScaAGq2+duqKVTyVQrqtYvb9xC7kQMwMq2Z0SjPATN1EaKm6FQnLAZsw4Q6uKEuXVCEQ0s7bbz3z8f6YXG3sAno8cciuLDTiMjtu/O/71yfrRmG29vs5kvl/k1lX9OfquWlHIOhjREO3y0BNN9K6WjnCgAdEsJZdJ+PPTFq/2ciWqrVxi29ooGZ4lhmUDAzJnSD4btHjuh33FnuDGi7IfHbX9jOUsxRyDG+huwh3hSP/gV4Va1jdBqijswha9uWAwioA0HyLMgrmqD rkovacs@Richard-Kovacs-MBP.local

mhmxs

// rawSign - base64 encoded  representation of the signiture
// pubPem - public key in PEM format
// data - the signed data
func CheckSignature(rawSign string, pubPem []byte, data []byte) bool {
 var err error
 var sign []byte
 var pub interface{}
 sign, err = base64.StdEncoding.DecodeString(rawSign)
 if err == nil {
  block, _ := pem.Decode(pubPem)

mhmxs

func Wrap(handler func(w http.ResponseWriter, req *http.Request), signatureKey []byte) http.Handler {
 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
  body := new(bytes.Buffer)
  defer r.Body.Close()
  ioutil.ReadAll(io.TeeReader(r.Body, body))
  r.Body = ioutil.NopCloser(body) // We read the body twice, we have to wrap original ReadCloser
  signature := strings.TrimSpace(r.Header.Get("signature"))
  if err := CheckSignature(signature, signatureKey, body.Bytes()); err != nil {
    // Error handling
    w.WriteHeader(http.StatusNotAcceptable)

mhmxs

func PostItHandler(w http.ResponseWriter, req *http.Request) {
 w.Write([]byte("ok"))
}

func RegisterHandler() {
 signature, _ := ioutil.ReadFile("/path/of/public/key")

 r := mux.NewRouter()
 r.Handle("/postit", Wrap(PostItHandler, signature)).Methods("POST")
 http.Handle("/", r)

mhmxs

type TestWriter struct {
 header  http.Header
 status  int
 message string
}

func (w *TestWriter) Header() http.Header {
 return w.header
}

mhmxs

// privateKeyPem - private key in PEM format
// data - data to signature
public static String generateSignature(String privateKeyPem, byte[] data) {
    try (PEMParser pEMParser = new PEMParser(new StringReader(clarifyPemKey(privateKeyPem)))) {
        PEMKeyPair pemKeyPair = (PEMKeyPair) pEMParser.readObject();

        KeyFactory factory = KeyFactory.getInstance("RSA");
        X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(pemKeyPair.getPublicKeyInfo().getEncoded());
        PublicKey publicKey = factory.generatePublic(publicKeySpec);
        PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(pemKeyPair.getPrivateKeyInfo().getEncoded());

mhmxs

package main

import (
	"fmt"
	"math"
	"math/rand"
	"sync"
	"sync/atomic"
	"time"
)

mhmxs

package main
func main() {
	c := make(chan bool)
	go func() { c <- true }()
	println(<-c)
}

mhmxs

package main

import (
	"fmt"
	"math"
	"math/rand"
	"sync"
	"sync/atomic"
	"time"
)

mhmxs

	var itsLast, notLast int32 // statisztika eredménye
	countChan := make(chan int, COUNTERS) // chanel, amin a számláló várja az értékeket
	counter := func() {
		for {
			e := <-countChan // kiolvassuk a következő értéket

			mtx.RLock() // olvasásra zárolunk és kiolvassuk az eredmenyből az utolsó elemet
			last := results[len(results)-1]
			mtx.RUnlock()