How do I implement JWT authentication in Go?

How do I implement JWT authentication in Go?

To implement JWT authentication in Go, you can use the "github.com/dgrijalva/jwt-go" package. First, install it using go get.

What are the steps to create a JWT token?

1. Define a struct for your claims. 2. Create a token using jwt.NewWithClaims(). 3. Sign the token with a secret key.

How do I validate the JWT token?

To validate a JWT token, use jwt.Parse() and provide a function to verify the signing method and key.

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 token
    token := jwt.New(jwt.SigningMethodHS256)
    // Sign the token
    tokenString, err := token.SignedString([]byte("your-256-bit-secret"))
    if err != nil {
        fmt.Println(err)
    }
    fmt.Println(tokenString)
}