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65 lines
2.2 KiB
Go
65 lines
2.2 KiB
Go
package jwt_test
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import (
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"fmt"
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"github.com/dgrijalva/jwt-go"
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"io/ioutil"
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"time"
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)
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// For HMAC signing method, the key can be any []byte. It is recommended to generate
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// a key using crypto/rand or something equivalent. You need the same key for signing
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// and validating.
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var hmacSampleSecret []byte
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func init() {
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// Load sample key data
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if keyData, e := ioutil.ReadFile("test/hmacTestKey"); e == nil {
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hmacSampleSecret = keyData
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} else {
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panic(e)
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}
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}
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// Example creating, signing, and encoding a JWT token using the HMAC signing method
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func ExampleNew_hmac() {
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// Create a new token object, specifying signing method and the claims
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// you would like it to contain.
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
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"foo": "bar",
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"nbf": time.Date(2015, 10, 10, 12, 0, 0, 0, time.UTC).Unix(),
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})
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// Sign and get the complete encoded token as a string using the secret
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tokenString, err := token.SignedString(hmacSampleSecret)
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fmt.Println(tokenString, err)
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// Output: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJmb28iOiJiYXIiLCJuYmYiOjE0NDQ0Nzg0MDB9.u1riaD1rW97opCoAuRCTy4w58Br-Zk-bh7vLiRIsrpU <nil>
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}
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// Example parsing and validating a token using the HMAC signing method
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func ExampleParse_hmac() {
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// sample token string taken from the New example
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tokenString := "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJmb28iOiJiYXIiLCJuYmYiOjE0NDQ0Nzg0MDB9.u1riaD1rW97opCoAuRCTy4w58Br-Zk-bh7vLiRIsrpU"
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// Parse takes the token string and a function for looking up the key. The latter is especially
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// useful if you use multiple keys for your application. The standard is to use 'kid' in the
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// head of the token to identify which key to use, but the parsed token (head and claims) is provided
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// to the callback, providing flexibility.
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token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
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// Don't forget to validate the alg is what you expect:
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if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
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}
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return hmacSampleSecret, nil
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})
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if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
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fmt.Println(claims["foo"], claims["nbf"])
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} else {
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fmt.Println(err)
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}
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// Output: bar 1.4444784e+09
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}
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