How can I implement JWT for authentication in my Go application?

How can I implement JWT for authentication in my Go application?

You can use the "github.com/dgrijalva/jwt-go" package to implement JWT in your Go application. First, install the package.

What are the steps to create a JWT token?

To create a JWT token, you need to define your claims, sign the token with a secret key, and then return it to the user.

How do I validate the JWT token?

To validate a JWT token, you can parse it using the same secret key and check the claims to ensure it's valid.

Can you show me a code example?

Sure! Here's a simple example:

package main

import (
    "fmt"
    "github.com/dgrijalva/jwt-go"
)

func main() {
    // Create a new token
    token := jwt.New(jwt.SigningMethodHS256)
    // Set claims
    claims := token.Claims.(jwt.MapClaims)
    claims["foo"] = "bar"
    // Sign the token
    tokenString, err := token.SignedString([]byte("your-256-bit-secret"))
    if err != nil {
        fmt.Println(err)
    }
    fmt.Println(tokenString)
}

This code creates a JWT token with a simple claim.