Question

我需要将这个php函数转换为Rails。它用于使用特殊密钥加密我们提供的数据。此函数的输出应与ruby函数匹配。请帮忙。

public static function genHash($secret, $data) {
    $ourhash = hash_hmac('sha256', utf8_decode($data), utf8_decode($secret), FALSE);
    return $Hmac;
}

Answer 1

   Use the cancel() of AsynchTask class onBackPress() of Activty class


 public class ExampleActivity extends Activity {
private boolean mIsPaused;
SignInTask singleTaskObj;
...
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    ...
    Button btnSignIn = (Button) findViewById(R.id.btn_sign_in);
    btnSignIn.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
           singleTaskObj =  new SignInTask(ExampleActivity.this).execute();
        }
    });
    ...
}

@Override
protected void onPause() {
    super.onPause();
    mIsPaused = true;
}

@Override
protected void onResume() {
    super.onResume();
    mIsPaused = false;
}

protected void onBackPressed()
{
 singleTaskObj.cancel();
}

private boolean isPaused() {
    return mIsPaused;
}

...
private static class SignInTask extends AsyncTask<Void, Void, SomeResult> {

    private final WeakReference<ExampleActivity> mAct;

    public SignInTask(ExampleActivity act) {
        mAct = new WeakReference<ExampleActivity>(act);
    }

    @Override
    protected SomeResult doInBackground(Void... params) {
        return mApi.signIn(creds);
    }

    @Override
    protected void onPostExecute(SomeResult result) {
        if (result.getCode() == OK) {
            ExampleActivity act = mAct.get();
            if (act != null) {
                if (act.isPaused()) {
                    // do something
                } else {
                    startActivity(new Intent(act, NextActivity.class));
                }
            } else {
                // do something
            }
        }

    }
}
}

如何在Rails中使用带有hash_hmac的sha256加密数据，就像在这个php函数中一样

1 个答案: