getKeypair function

KeyPair getKeypair(
  1. Uint8List pvKey,
  2. String curve
)

Implementation

KeyPair getKeypair(Uint8List pvKey, String curve) {
  switch (curve) {
    case 'ed25519':
      final signingKey = ed25519.SigningKey(seed: pvKey);
      final pubBuf = signingKey.publicKey.toUint8List();
      return KeyPair(privateKey: pvKey, publicKey: pubBuf);
    case 'P256':
      final ec = elliptic.getP256();
      final privateKey = elliptic.PrivateKey.fromBytes(ec, pvKey);
      final publicKey = ec.privateToPublicKey(privateKey);
      return KeyPair(
        privateKey: pvKey,
        publicKey: hexToUint8List(publicKey.toHex()),
      );
    case 'secp256k1':
      final ec = elliptic.getSecp256k1();
      final privateKey = elliptic.PrivateKey.fromBytes(ec, pvKey);
      final publicKey = ec.privateToPublicKey(privateKey);
      return KeyPair(
        privateKey: pvKey,
        publicKey: hexToUint8List(publicKey.toHex()),
      );
    default:
      throw 'Curve not supported';
  }
}