EcdsaPrivateKey.importRawKey unavailable about webcrypto.dart HOT 1 CLOSED

import 'dart:typed_data';
import 'package:elliptic/elliptic.dart' hide EllipticCurve;
import 'package:webcrypto/webcrypto.dart';
import 'package:zcrypto/src/convert.dart';

/// ECDSA sign/verify using NIST-P256 algorithm
class Ecdsa {
  /// We need to convert elliptic.PrivateKey and elliptic.PublicKey -> webcrypto.EcdsaPrivateKey
  static Future<Uint8List> sign({required Uint8List message, required PrivateKey privateKey}) async {
    final pkcs8 = await
      '308187020100301306072a8648ce3d020106082a8648ce3d030107046d306b0201010420'
      '${privateKey.toHex()}'
      'a144034200'
      '${privateKey.publicKey.toHex()}'.integerListFromHexString();
    final signingKey = await EcdsaPrivateKey.importPkcs8Key(pkcs8, EllipticCurve.p256);
    return await signingKey.signBytes(message, Hash.sha256);
  }
  
  /// For verification we can convert directly from elliptic.PublicKey -> webcrypto.EcdsaPublicKey
  static Future<bool> verify({required Uint8List message, required Uint8List signature, required PublicKey publicKey}) async {    
    final publicKeyBytes = await publicKey.toHex().integerListFromHexString();
    final verifyingKey = await EcdsaPublicKey.importRawKey(publicKeyBytes, EllipticCurve.p256);
    return await verifyingKey.verifyBytes(signature, message, Hash.sha256);
  }
}