initial import

microservices/jwt/server/go.mod

@@ -0,0 +1,5 @@
+module golang.source-fellows.com/samples/jwt/server
+
+go 1.14
+
+require github.com/SermoDigital/jose v0.9.2-0.20161205224733-f6df55f235c2

microservices/jwt/server/go.sum

@@ -0,0 +1,2 @@
+github.com/SermoDigital/jose v0.9.2-0.20161205224733-f6df55f235c2 h1:koK7z0nSsRiRiBWwa+E714Puh+DO+ZRdIyAXiXzL+lg=
+github.com/SermoDigital/jose v0.9.2-0.20161205224733-f6df55f235c2/go.mod h1:ARgCUhI1MHQH+ONky/PAtmVHQrP5JlGY0F3poXOp/fA=

microservices/jwt/server/jwt/token.go

@@ -0,0 +1,27 @@
+package jwt
+
+import (
+	"time"
+
+	"github.com/SermoDigital/jose/crypto"
+	"github.com/SermoDigital/jose/jws"
+)
+
+var key = []byte("meinGeheimerSchlüssel")
+
+func CreateToken(user string) ([]byte, error) {
+	claims := jws.Claims{}
+	claims.SetAudience("source-fellows.com")
+	claims.SetIssuer(user)
+	claims.SetExpiration(time.Now().Add(time.Minute * 10))
+	token := jws.NewJWT(claims, crypto.SigningMethodHS256)
+	return token.Serialize(key)
+}
+
+func ValidateToken(token []byte) error {
+	newToken, err := jws.ParseJWT(token)
+	if err != nil {
+		return err
+	}
+	return newToken.Validate(key, crypto.SigningMethodHS256)
+}

microservices/jwt/server/main.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+	"log"
+	"net/http"
+
+	"golang.source-fellows.com/samples/jwt/server/jwt"
+)
+
+func handle(res http.ResponseWriter, req *http.Request) {
+	token, err := jwt.CreateToken()
+	if err != nil {
+		log.Fatal(err)
+		res.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	err = jwt.ValidateToken(token)
+	if err != nil {
+		log.Fatal(err)
+		res.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	res.Write(token)
+}
+
+func main() {
+	http.HandleFunc("/", handle)
+	http.ListenAndServe(":8080", nil)
+}