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Support EdDSA for JWT (#7)

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Crossle Song
2021-03-16 23:47:08 +08:00
committed by GitHub
parent 78cb96c7dd
commit 714d8e7d52
7 changed files with 136 additions and 5 deletions
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35
lib/src/algorithms.dart
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@ -3,6 +3,7 @@ import 'dart:typed_data';
import 'package:crypto/crypto.dart';
import 'package:pointycastle/pointycastle.dart' as pc;
import 'package:ed25519_edwards/ed25519_edwards.dart' as ed;
import 'errors.dart';
import 'keys.dart';
@ -36,6 +37,9 @@ abstract class JWTAlgorithm {
/// ECDSA using P-512 curve and SHA-512 hash algorithm
static const ES512 = _ECDSAAlgorithm('ES512');
/// EdDSA using Ed25519 curve algorithm
static const Ed25519 = _EdDSAAlgorithm('EdDSA');
/// Return the `JWTAlgorithm` from his string name
static JWTAlgorithm fromName(String name) {
switch (name) {
@ -57,6 +61,8 @@ abstract class JWTAlgorithm {
return JWTAlgorithm.ES384;
case 'ES512':
return JWTAlgorithm.ES512;
case 'EdDSA':
return JWTAlgorithm.Ed25519;
default:
throw JWTInvalidError('unknown algorithm');
}
@ -78,6 +84,35 @@ abstract class JWTAlgorithm {
bool verify(Key key, Uint8List body, Uint8List signature);
}
class _EdDSAAlgorithm extends JWTAlgorithm {
final String _name;
const _EdDSAAlgorithm(this._name);
@override
String get name => _name;
@override
Uint8List sign(Key key, Uint8List body) {
assert(key is EdDSAPrivateKey, 'key must be a EdDSAPrivateKey');
final privateKey = key as EdDSAPrivateKey;
return ed.sign(privateKey.key, body);
}
@override
bool verify(Key key, Uint8List body, Uint8List signature) {
assert(key is EdDSAPublicKey, 'key must be a EdDSAPublicKey');
final publicKey = key as EdDSAPublicKey;
try {
return ed.verify(publicKey.key, body, signature);
} catch (ex) {
return false;
}
}
}
class _HMACAlgorithm extends JWTAlgorithm {
final String _name;