some update

TalaoDAO · Apr 19, 2024 · 9cdd526 · 9cdd526
1 parent c343a2f
commit 9cdd526
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Showing 3 changed files with 45 additions and 4 deletions.
diff --git a/packages/oidc4vc/lib/src/oidc4vc.dart b/packages/oidc4vc/lib/src/oidc4vc.dart
@@ -5,6 +5,7 @@ import 'dart:io';
 
 import 'package:bip32/bip32.dart' as bip32;
 import 'package:bip39/bip39.dart' as bip393;
+import 'package:bs58/bs58.dart';
 import 'package:crypto/crypto.dart';
 import 'package:dart_jsonwebtoken/dart_jsonwebtoken.dart';
 import 'package:did_kit/did_kit.dart';
@@ -300,7 +301,7 @@ class OIDC4VC {
         };
         credentials.add((credential['types'] as List<dynamic>).last);
       } else {
-        throw Exception('CREDENTIAL_SUPPORT_DATA_ERROR');
+        throw Exception();
       }
 
       authorizationDetails.add(data);
@@ -700,7 +701,7 @@ class OIDC4VC {
         'redirect_uri': redirectUri,
       };
     } else {
-      throw Exception('CREDENTIAL_SUPPORT_DATA_ERROR');
+      throw Exception();
     }
 
     if (authorization == null) {
@@ -758,7 +759,7 @@ class OIDC4VC {
         }
 
         if (openIdConfiguration.jwksUri == null) {
-          throw Exception('JWKS_URI_IS_NULL');
+          throw Exception();
         }
 
         final response = await dioGet(
@@ -1736,12 +1737,33 @@ class OIDC4VC {
       await secureStorageProvider.set(uri, jsonEncode(value));
 
       return response.data;
+    } on FormatException catch (_) {
+      throw Exception();
     } catch (e) {
       if (e is DioException) {
-        throw Exception('Issue while getting $uri');
+        throw Exception();
       } else {
         rethrow;
       }
     }
   }
+
+  Map<String, dynamic> publicKeyBase58ToPublicJwk(String publicKeyBase58) {
+    ///step 1 : change the publicKeyBase58 format from base58 to base64 :
+    ///decode base58 then encode in base64 urlsafe
+    final pubKey = base64Url
+        .encode(base58.decode(base58.encode(utf8.encode(publicKeyBase58))))
+        .replaceAll('=', '');
+
+    ///step 2 : create the JWK for the "type": "Ed
+    ///25519VerificationKey2018",
+    ///it is a edDSA key
+    final jwk = {
+      'crv': 'Ed25519',
+      'kty': 'OKP',
+      'x': pubKey,
+    };
+    return jwk;
+  }
 }
+///CsGY5ZB4ctkM3Xs4aDZGMNKd8uK6Pk79geUb6aDkDS4y
diff --git a/packages/oidc4vc/pubspec.yaml b/packages/oidc4vc/pubspec.yaml
@@ -9,6 +9,7 @@ environment:
 dependencies:
   bip32: ^2.0.0
   bip39: ^1.0.6
+  bs58: ^1.0.2
   credential_manifest:
     path: ../credential_manifest
   crypto: ^3.0.3

diff --git a/packages/oidc4vc/test/src/oidc4vc_test.dart b/packages/oidc4vc/test/src/oidc4vc_test.dart
@@ -191,6 +191,24 @@ void main() {
     });
   });
 
+  group('publicKeyBase58ToPublicJwk', () {
+    final oidc4vc = OIDC4VC();
+
+    const publicKeyBase58 = '2S73k5pn5umfnaW31qx6dXFndEn6SmWw7LpgSjNNC5BF';
+
+    final expectedPublicJWK = {
+      'crv': 'Ed25519',
+      'kty': 'OKP',
+      'x': 'FUoLewH4w4-KdaPH2cjZbL--CKYxQRWR05Yd_bIbhQo',
+    };
+
+    test('convert publicKeyBase58 to PublicJwk', () {
+      final publicKey = oidc4vc.publicKeyBase58ToPublicJwk(publicKeyBase58);
+      print('actual - $publicKey');
+      print('expected - $expectedPublicJWK');
+    });
+  });
+
   group('EBSI: getAuthorizationUriForIssuer', () {
     const issuer = 'https://talao.co/sandbox/ebsi/issuer/pcbrwbvrsi';