jwt-go - The easiest JWT Library that could be the starting point for any of your project

栏目: IT技术 · 发布时间: 4年前

内容简介：The easiest JWT Library that could be the starting point for any of your project.

JWT Go

The easiest JWT Library that could be the starting point for any of your project.

Installation

go get github.com/supanadit/jwt-go

Quick Start

package main

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

func main() {
	// Set Your JWT Secret Code, its optional but important, because default secret code is very insecure
	jwt.SetJWTSecretCode("Your Secret Code")

	// Create default authorization
	auth := jwt.Authorization{
		Username: "admin",
		Password: "admin",
	}

	// Generate JWT Token from default authorization model
	token, err := auth.GenerateJWT()
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println("JWT Token : " + token)

	// Verify the token
	valid, err := auth.VerifyJWT(token)
	if err != nil {
		fmt.Println(err)
	}

	fmt.Print("Status : ")

	if valid {
		fmt.Println("Valid")
	} else {
		fmt.Println("Invalid")
	}
}

Custom Authorization

package main

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

type Login struct {
	Email    string
	Password string
	Name     string
}

func main() {
	// Set Your JWT Secret Code, its optional but important, because default secret code is very insecure
	jwt.SetJWTSecretCode("Your Secret Code")

	// Create default authorization
	auth := Login{
		Email:    "asd@asd.com",
		Password: "asd",
		Name:     "asd",
	}

	// Generate JWT Token from default authorization model
	token, err := jwt.GenerateJWT(auth)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println("JWT Token : " + token)

	// Variable for decoded JWT token
	var dataAuth Login
	// Verify the token
	valid, err := jwt.VerifyAndBindingJWT(&dataAuth, token)
	if err != nil {
		fmt.Println(err)
	}

	// or simply you can do this, if you don't need to decode the JWT
	// valid, err := jwt.VerifyJWT(token)
	// if err != nil {
	//	 fmt.Println(err)
	// }

	fmt.Print("Status : ")

	if valid {
		fmt.Println("Valid")
	} else {
		fmt.Println("Invalid")
	}
}

Encrypt & Verify Password

package main

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

type Login struct {
	Email    string
	Password string
}

func main() {
	// Set Your JWT Secret Code, its optional but important, because default secret code is very insecure
	jwt.SetJWTSecretCode("Your Secret Code")

	// Create authorization from your own struct
	auth := Login{
		Email:    "example@email.com",
		Password: "123",
	}

	// Encrypt password, which you can save to database
	ep, err := jwt.EncryptPassword(auth.Password)
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println("Encrypted Password " + string(ep))

	// Verify Encrypted Password
	valid, err := jwt.VerifyPassword(string(ep), auth.Password)
	if err != nil {
		fmt.Println(err)
	}

	fmt.Print("Status : ")

	if valid {
		fmt.Println("Valid")
	} else {
		fmt.Println("Invalid")
	}
}

Decrypt Password

No you can't, as the thread at Stack Exchange

bcrypt is not an encryption function, it's a password hashing function, relying on Blowfish's key scheduling, not its encryption. Hashing are mathematical one-way functions, meaning there is no way to reverse the output string to get the input string.   of course only Siths deal in absolutes and there are a few attacks against hashes. But none of them are "reversing" the hashing, AFAIK.

so that enough to secure the password

Set Expired Time

package main

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

func main() {
	// Set Your JWT Secret Code, its optional but important, because default secret code is very insecure
	jwt.SetJWTSecretCode("Your Secret Code")
 
    // You can simply do this, jwt.setExpiredTime(Hour,Minute,Second)
	jwt.SetExpiredTime(0, 0, 1)
}

Support Gin Web Framework

package main

import (
	"github.com/gin-gonic/gin"
	"github.com/supanadit/jwt-go"
	"net/http"
)

func main() {
	// Set Your JWT Secret Code, its optional but important, because default secret code is very insecure
	jwt.SetJWTSecretCode("Your Secret Code")

	// Create authorization
	auth := jwt.Authorization{
		Username: "admin",
		Password: "123",
	}

	router := gin.Default()

	// Login / Authorization for create JWT Token
	router.POST("/auth", func(c *gin.Context) {
		var a jwt.Authorization
		err := c.Bind(&a)
		if err != nil {
			c.JSON(http.StatusBadRequest, gin.H{
				"status": "Invalid body request",
				"token":  nil,
			})
		} else {
			valid, err := auth.VerifyPassword(a.Password)
			if err != nil {
				c.JSON(http.StatusBadRequest, gin.H{
					"status": "Wrong username or password",
					"token":  nil,
				})
			} else {
				if valid {
					token, err := a.GenerateJWT()
					if err != nil {
						c.JSON(http.StatusInternalServerError, gin.H{
							"status": "Can't generate JWT token",
							"token":  nil,
						})
					} else {
						c.JSON(http.StatusOK, gin.H{
							"status": "Success",
							"token":  token,
						})
					}
				} else {
					c.JSON(http.StatusBadRequest, gin.H{
						"status": "Wrong username or password",
						"token":  nil,
					})
				}
			}
		}
	})

	// Test Authorization
	router.GET("/test", func(c *gin.Context) {
		// Variable for binding if you need decoded JWT
		var dataAuth jwt.Authorization
		// Verify and binding JWT
		token, valid, err := jwt.VerifyAndBindingGinHeader(&dataAuth, c)

		// in case if you don't want to decode the JWT, simply use this code
		// token, valid, err := jwt.VerifyGinHeader(c)

		if err != nil {
			c.JSON(http.StatusOK, gin.H{
				"status": err.Error(),
			})
		} else {
			if valid {
				c.JSON(http.StatusOK, gin.H{
					"status": token + " is valid",
				})
			} else {
				c.JSON(http.StatusBadRequest, gin.H{
					"status": "Invalid",
				})
			}
		}
	})

	_ = router.Run(":8080")
}

Support Echo Web Framework

package main

import (
	"github.com/labstack/echo/v4"
	"github.com/supanadit/jwt-go"
	"net/http"
)

func main() {
	// Set Your JWT Secret Code, its optional but important, because default secret code is very insecure
	jwt.SetJWTSecretCode("Your Secret Code")

	// Create authorization
	auth := jwt.Authorization{
		Username: "admin",
		Password: "123",
	}

	e := echo.New()

	// Login / Authorization for create JWT Token
	e.POST("/auth", func(c echo.Context) error {
		a := new(jwt.Authorization)
		// Create struct for response, or you can create globally by your self
		var r struct {
			Status string
			Token  string
		}
		err := c.Bind(a)
		if err != nil {
			r.Status = "Invalid body request"
			return c.JSON(http.StatusBadRequest, &r)
		} else {
			valid, err := auth.VerifyPassword(a.Password)
			if err != nil {
				r.Status = "Wrong username or password"
				return c.JSON(http.StatusBadRequest, &r)
			} else {
				if valid {
					token, err := a.GenerateJWT()
					if err != nil {
						r.Status = "Can't generate JWT Token"
						return c.JSON(http.StatusInternalServerError, &r)
					} else {
						r.Status = "Success"
						r.Token = token
						return c.JSON(http.StatusOK, &r)
					}
				} else {
					r.Status = "Wrong username or password"
					return c.JSON(http.StatusBadRequest, &r)
				}
			}
		}
	})

	// Test Authorization
	e.GET("/test", func(c echo.Context) error {
		// Create struct for response
		var r struct {
			Status string
		}
		// Variable for binding if you need decoded JWT
		dataAuth := new(jwt.Authorization)
		// Verify and binding JWT
		token, valid, err := jwt.VerifyAndBindingEchoHeader(&dataAuth, c)

		// in case if you don't want to decode the JWT, simply use this code
		// Token, valid, err := jwt.VerifyEchoHeader(c)

		if err != nil {
			r.Status = err.Error()
			return c.JSON(http.StatusBadRequest, &r)
		} else {
			if valid {
				r.Status = token + " is valid"
				return c.JSON(http.StatusOK, &r)
			} else {
				r.Status = "Invalid"
				return c.JSON(http.StatusBadRequest, &r)
			}
		}
	})

	// Start server
	e.Logger.Fatal(e.Start(":1323"))
}

Disable & Enable Authorization

You can simply Enable and Disable authorization using code bellow

package main

import (
	"github.com/supanadit/jwt-go"
)

func main() {
	// Set Your JWT Secret Code, its optional but important, because default secret code is very insecure
	jwt.SetJWTSecretCode("Your Secret Code")

	jwt.DisableAuthorization() // Disable authorization, meaning when verify jwt token it will return true even if the token was expired or invalid

	// or

	jwt.EnableAuthorization() // Enable authorization
}