【驗證碼識別】OpenCV挑戰騰訊防水墻滑動驗證碼

使用 OpenCV破解騰訊防水墻滑動驗證碼

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* 驗證碼地址：https://007.qq.com/online.html
* 使用OpenCv模板匹配
* 成功率90%左右
* Java + Selenium + OpenCV

產品樣例

來吧！展示！

注意！！！
· 在模擬滑動時不能按照相同速度或者過快的速度滑動，需要向人滑動時一樣先快后慢，這樣才不容易被識別，
模擬滑動代碼↓↓↓

/**
	 * 模擬人工移動
	 * @param driver
	 * @param element頁面滑塊
	 * @param distance需要移動距離
	 */
	public static void move(WebDriver driver, WebElement element, int distance) throws InterruptedException {
		int randomTime = 0;
		if (distance > 90) {
			randomTime = 250;
		} else if (distance > 80 && distance <= 90) {
			randomTime = 150;
		}
		List<Integer> track = getMoveTrack(distance - 2);
		int moveY = 1;
		try {
			Actions actions = new Actions(driver);
			actions.clickAndHold(element).perform();
			Thread.sleep(200);
			for (int i = 0; i < track.size(); i++) {
				actions.moveByOffset(track.get(i), moveY).perform();
				Thread.sleep(new Random().nextInt(300) + randomTime);
			}
			Thread.sleep(200);
			actions.release(element).perform();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	/**
	 * 根據距離獲取滑動軌跡
	 * @param distance需要移動的距離
	 * @return
	 */
	public static List<Integer> getMoveTrack(int distance) {
		List<Integer> track = new ArrayList<>();// 移動軌跡
		Random random = new Random();
		int current = 0;// 已經移動的距離
		int mid = (int) distance * 4 / 5;// 減速閾值
		int a = 0;
		int move = 0;// 每次回圈移動的距離
		while (true) {
			a = random.nextInt(10);
			if (current <= mid) {
				move += a;// 不斷加速
			} else {
				move -= a;
			}
			if ((current + move) < distance) {
				track.add(move);
			} else {
				track.add(distance - current);
				break;
			}
			current += move;
		}
		return track;
	}

看操作，no bb，直接上代碼

private final String INDEX_URL = "https://007.qq.com/online.html?ADTAG=index.head";
private void seleniumTest() {
		ChromeDriverManager manager = ChromeDriverManager.getInstance();
		int status = -1;
		try {
			WebDriver driver = manager.getDriver();
			driver.get(INDEX_URL);
			driver.manage().window().maximize(); // 設定瀏覽器視窗最大化
			Thread.sleep(10000);
			driver.findElement(By.className("wp-onb-tit")).findElements(By.tagName("a")).get(1).click();
			Thread.sleep(500);
			// 點擊出現滑動圖
			waitWebElement(driver, By.id("code"), 500).click();
			Thread.sleep(100);
			// 獲取到驗證區域
			driver.switchTo().frame(waitWebElement(driver, By.id("tcaptcha_iframe"), 500));
			Thread.sleep(100);
			// 獲取滑動按鈕
			WebElement moveElemet = waitWebElement(driver, By.id("tcaptcha_drag_button"), 500);
			Thread.sleep(100);
			// 獲取帶陰影的背景圖
			String bgUrl = waitWebElement(driver, By.id("slideBg"), 500).getAttribute("src");
			Thread.sleep(100);
			// 獲取帶陰影的小圖
			String sUrl = waitWebElement(driver, By.id("slideBlock"), 500).getAttribute("src");
			Thread.sleep(100);
			// 獲取高度
			String topStr = waitWebElement(driver, By.id("slideBlock"), 500).getAttribute("style").substring(32, 36);
			int top = Integer.parseInt(topStr.substring(0, topStr.indexOf("p"))) * 2;
			Thread.sleep(100);
			// 計算移動距離
			int distance = (int) Double.parseDouble(getTencentDistance(bgUrl, sUrl, top));
			// 滑動
			move(driver, moveElemet, distance);
			Thread.sleep(5000);

		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			manager.closeDriver(status);
		}
	}

	/**
	 * 獲取騰訊驗證滑動距離
	 * 
	 * @return
	 */
	public static String dllPath = "C://chrome//opencv_java440.dll";

	public String getTencentDistance(String bUrl, String sUrl, int top) {
		System.load(dllPath);
		File bFile = new File("C:/qq_b.jpg");
		File sFile = new File("C:/qq_s.jpg");
		try {
			FileUtils.copyURLToFile(new URL(bUrl), bFile);
			FileUtils.copyURLToFile(new URL(sUrl), sFile);
			BufferedImage bgBI = ImageIO.read(bFile);
			BufferedImage sBI = ImageIO.read(sFile);
			// 裁剪
			bgBI = bgBI.getSubimage(360, top, bgBI.getWidth() - 370, sBI.getHeight());
			ImageIO.write(bgBI, "png", bFile);
			Mat s_mat = Imgcodecs.imread(sFile.getPath());
			Mat b_mat = Imgcodecs.imread(bFile.getPath());
			// 轉灰度影像
			Mat s_newMat = new Mat();
			Imgproc.cvtColor(s_mat, s_newMat, Imgproc.COLOR_BGR2GRAY);
			// 二值化影像
			binaryzation(s_newMat);
			Imgcodecs.imwrite(sFile.getPath(), s_newMat);

			int result_rows = b_mat.rows() - s_mat.rows() + 1;
			int result_cols = b_mat.cols() - s_mat.cols() + 1;
			Mat g_result = new Mat(result_rows, result_cols, CvType.CV_32FC1);
			Imgproc.matchTemplate(b_mat, s_mat, g_result, Imgproc.TM_SQDIFF); // 歸一化平方差匹配法
			// 歸一化相關匹配法
			Core.normalize(g_result, g_result, 0, 1, Core.NORM_MINMAX, -1, new Mat());
			Point matchLocation = new Point();
			MinMaxLocResult mmlr = Core.minMaxLoc(g_result);
			matchLocation = mmlr.maxLoc; // 此處使用maxLoc還是minLoc取決于使用的匹配演算法
			Imgproc.rectangle(b_mat, matchLocation,
					new Point(matchLocation.x + s_mat.cols(), matchLocation.y + s_mat.rows()), new Scalar(0, 0, 0, 0));
			return "" + ((matchLocation.x + s_mat.cols() + 360 - sBI.getWidth() - 46) / 2);
		} catch (Throwable e) {
			e.printStackTrace();
			return null;
		} finally {
			bFile.delete();
			sFile.delete();
		}
	}
/**
	 * 
	 * @param mat
	 *            二值化影像
	 */
	public static void binaryzation(Mat mat) {
		int BLACK = 0;
		int WHITE = 255;
		int ucThre = 0, ucThre_new = 127;
		int nBack_count, nData_count;
		int nBack_sum, nData_sum;
		int nValue;
		int i, j;
		int width = mat.width(), height = mat.height();
		// 尋找最佳的闕值
		while (ucThre != ucThre_new) {
			nBack_sum = nData_sum = 0;
			nBack_count = nData_count = 0;

			for (j = 0; j < height; ++j) {
				for (i = 0; i < width; i++) {
					nValue = (int) mat.get(j, i)[0];

					if (nValue > ucThre_new) {
						nBack_sum += nValue;
						nBack_count++;
					} else {
						nData_sum += nValue;
						nData_count++;
					}
				}
			}
			nBack_sum = nBack_sum / nBack_count;
			nData_sum = nData_sum / nData_count;
			ucThre = ucThre_new;
			ucThre_new = (nBack_sum + nData_sum) / 2;
		}
		// 二值化處理
		int nBlack = 0;
		int nWhite = 0;
		for (j = 0; j < height; ++j) {
			for (i = 0; i < width; ++i) {
				nValue = (int) mat.get(j, i)[0];
				if (nValue > ucThre_new) {
					mat.put(j, i, WHITE);
					nWhite++;
				} else {
					mat.put(j, i, BLACK);
					nBlack++;
				}
			}
		}
		// 確保白底黑字
		if (nBlack > nWhite) {
			for (j = 0; j < height; ++j) {
				for (i = 0; i < width; ++i) {
					nValue = (int) (mat.get(j, i)[0]);
					if (nValue == 0) {
						mat.put(j, i, WHITE);
					} else {
						mat.put(j, i, BLACK);
					}
				}
			}
		}
	}
	// 延時加載
	private static WebElement waitWebElement(WebDriver driver, By by, int count) throws Exception {
		WebElement webElement = null;
		boolean isWait = false;
		for (int k = 0; k < count; k++) {
			try {
				webElement = driver.findElement(by);
				if (isWait)
					System.out.println(" ok!");
				return webElement;
			} catch (org.openqa.selenium.NoSuchElementException ex) {
				isWait = true;
				if (k == 0)
					System.out.print("waitWebElement(" + by.toString() + ")");
				else
					System.out.print(".");
				Thread.sleep(50);
			}
		}
		if (isWait)
			System.out.println(" outTime!");
		return null;
	}

谷歌已經宣布退出圖形驗證碼服務，為何國內各種奇葩驗證方式層出不窮，安全性到底如何？
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