This is a very simplistic implementation of JWT using hashing algorithms like HS256 or HS512 and taking advantage of Go 1.18 generic type parameters for parsing claim objects.
This package is very much inspired and influenced by robbert229's JWT implementation. Here you can find the projects License.
const signingSecret = "3U5o3Z#XqfLpr3pjGknwWa^u6)CCo&&G"
algorithm := jwt.NewHmacSha512([]byte(signingSecret))
handler := jwt.NewHandler[Claims](algorithm)
claims := new(Claims)
claims.UserID = "221905671296253953"
claims.Iss = "jwt example"
claims.SetIat()
claims.SetExpDuration(15 * time.Minute)
claims.SetNbfTime(time.Now())
token, err := handler.EncodeAndSign(*claims)
if err != nil {
log.Fatalf("Token generation failed: %s", err.Error())
}
log.Printf("Token generated: %s", token)
recoveredClaims, err := handler.DecodeAndValidate(token)
if err != nil {
log.Fatalf("Token validation failed: %s", err.Error())
}
log.Printf("Recovered claims: %+v", recoveredClaims)Go to example to see the full example.