Android: SafetyNet认证设备验证响应网络错误

Question

我正在使用SafetyNet客户端调用Google Api，但它没有响应正确的响应。

   SafetyNet.SafetyNetApi.attest(mGoogleApiClient, generateNonce())
            .setResultCallback(new ResultCallback<SafetyNetApi.AttestationResult>() {
                @Override
                public void onResult(SafetyNetApi.AttestationResult result) {
                    Status status = result.getStatus();
                    String data = decodeJws(result.getJwsResult());

                    if (status.isSuccess()) {
                        // Indicates communication with the service was successful.
                        // Use result.getJwsResult() to get the result data.
                    } else {
                        // An error occurred while communicating with the service.
                    }
                }
            });

我在result方法中得到了下面的错误消息。

状态{statusCode=NETWORK_ERROR，resolution=null}

任何形式的帮助都会受到高度的感谢。

Answer 1

这不起作用，因为您使用的是不再支持的SafetyNetApi。

从Google Play Services11.0.0开始，您现在应该使用get an API key，并使用SafetyNetClient。

您可能还想看看10 things you might be doing wrong when using the SafetyNet Attestation API。

Answer 2

首先，您必须通过以下方法生成nonce

   private static byte[] getRequestNonce() {
    String data = String.valueOf(System.currentTimeMillis());
    ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
    byte[] bytes = new byte[24];
    Random random = new Random();
    random.nextBytes(bytes);
    try {
        byteStream.write(bytes);
        byteStream.write(data.getBytes());
    }catch (IOException e) {
        return null;
    }
    return byteStream.toByteArray();
}

后文使用安全网客户端认证api

 SafetyNet.getClient(context).attest(nonce, <API KEY>).addOnSuccessListener(new OnSuccessListener<SafetyNetApi.AttestationResponse>() {
                @Override
                public void onSuccess(SafetyNetApi.AttestationResponse attestationResponse) {
                    // parse response 

                }
            }).addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception e) {
                    // An error occurred while communicating with the service.
                }
            });
        }

参考：Sample Code Offline verification

Sample Code Online verification using google api