46 lines
1.6 KiB
Go
46 lines
1.6 KiB
Go
// Copyright 2022 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package node
|
|
|
|
import (
|
|
"fmt"
|
|
"net/http"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/rpc"
|
|
"github.com/golang-jwt/jwt/v4"
|
|
)
|
|
|
|
// NewJWTAuth creates an rpc client authentication provider that uses JWT. The
|
|
// secret MUST be 32 bytes (256 bits) as defined by the Engine-API authentication spec.
|
|
//
|
|
// See https://github.com/ethereum/execution-apis/blob/main/src/engine/authentication.md
|
|
// for more details about this authentication scheme.
|
|
func NewJWTAuth(jwtsecret [32]byte) rpc.HTTPAuth {
|
|
return func(h http.Header) error {
|
|
token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
|
|
"iat": &jwt.NumericDate{Time: time.Now()},
|
|
})
|
|
s, err := token.SignedString(jwtsecret[:])
|
|
if err != nil {
|
|
return fmt.Errorf("failed to create JWT token: %w", err)
|
|
}
|
|
h.Set("Authorization", "Bearer "+s)
|
|
return nil
|
|
}
|
|
}
|