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token.go
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token.go
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package main
import (
"crypto/rand"
"encoding/base64"
"fmt"
"log"
"github.com/dgrijalva/jwt-go"
)
func GenerateToken(bytesize int) (token string) {
b := make([]byte, bytesize)
_, err := rand.Read(b)
if err != nil {
log.Println("error:", err)
}
token = base64.StdEncoding.EncodeToString(b)
return
}
func JWT() {
// sample token string taken from the New example
var tokenString = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJmb28iOiJiYXIiLCJuYmYiOjE0NDQ0Nzg0MDB9.u1riaD1rW97opCoAuRCTy4w58Br-Zk-bh7vLiRIsrpU"
// hmacSampleSecret is a []byte containing your secret, e.g. []byte("my_secret_key")
hmacSampleSecret := []byte("A secret so powerful")
// Parse takes the token string and a function for looking up the key. The latter is especially
// useful if you use multiple keys for your application. The standard is to use 'kid' in the
// head of the token to identify which key to use, but the parsed token (head and claims) is provided
// to the callback, providing flexibility.
var token, err = jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
// Don't forget to validate the alg is what you expect:
if _, ok := token.Method.(*jwt.SigningMethodECDSA); !ok {
return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
}
return hmacSampleSecret, nil
})
if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
fmt.Println(claims["foo"], claims["nbf"])
} else {
fmt.Println(err)
}
// Create a new token object, specifying signing method and the claims
// you would like it to contain.
// token = jwt.NewWithClaims(jwt.SigningMethodECDSA, jwt.MapClaims{
// "foo": "bar",
// "nbf": time.Date(2015, 10, 10, 12, 0, 0, 0, time.UTC).Unix(),
// })
// Sign and get the complete encoded token as a string using the secret
tokenString, err = token.SignedString(hmacSampleSecret)
fmt.Println(tokenString, err)
}
func makeToken() string {
return "Cool Whip"
}