Latest and error free guide on how to secure GoLang API using JWT.

Following are the important parts in the code you may want to note:

1. Line 25 and 26: As per the new changes, the RSA key (in this case) for verification should be of type *rsa.PublicKey and in case of signing it should be of type *rsa.PrivateKey.

2. Line 97 - 107: claims are made in a new way. Earlier it was:

t := jwt.New(jwt.GetSigningMethod("RS256"))
t.Claims["iss"] = "admin"

Now...

signer := jwt.New(jwt.GetSigningMethod("RS256"))
        
claims := signer.Claims.(jwt.MapClaims)
        
claims["iss"] = "admin"

3. Line 130 ParseFromRequest() is transferred from jwt package to request package. Since bearer token authorization is used (Authorization: Bearer <token>) request.AuthorizationHeaderExtractor is used to extract the token.