getMFAResponseForSite - rendering array as a captcha image

Question

I'm working with Yodlee MFAs, in this case, captcha, and I'm wondering how to render the image field from this JSON response:

{
   "isMessageAvailable":true,
   "fieldInfo":{
      "responseFieldType":"text",
      "imageFieldType":"image",
      "image":[
         66,
         77,
         58,
         116,
         0,
         0,
         0,
         0,
         0,
         0,
         54,
         0,
         0,
         0,
         40,
         0,
         0,
         0,
         -91,
         0,
         0,
         0,
         45,
         0,
         0,
         0,
         1,
         0,
         32,
         0,
         0,
         0,
         0,
         0,
         4,
         116,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -5,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -9,
         -9,
         -9,
         0,
         -1,
         -5,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -5,
         -1,
         0,
         -17,
         -17,
         -17,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -9,
         -13,
         -9,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -9,
         -9,
         -9,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -17,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0,
         -1,
         -1,
         -1,
         0
      ],
      "minimumLength":-1,
      "maximumLength":-1,
      "displayString":"Please enter the text shown in the image"
   },
   "timeOutTime":99900,
   "itemId":10014925,
   "retry":false
}

For more information, you can read the following links: Link1, Link2

I would appreciate any help since I asked a Yodlee representative and he directed me here.

Apoorv Awasthi · Accepted Answer · 2014-06-24 16:32:22Z

0

The CAPTCHA image is being returned in String which is byte array of image. You need to convert this string into byte array and then into image. You can do this by using JDK libraries i.e. no external libraries are required.

You can use these.

java.awt.image.BufferedImage;
java.io.BufferedReader;
java.io.ByteArrayInputStream;

answered Jun 24, 2014 at 16:32

Apoorv Awasthi

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2 Comments

user3769317 Over a year ago

How can I do this with PHP instead of Java?

Apoorv Awasthi Over a year ago

There are different easy ways available to do so. I would suggest you to google it. For reference I am adding few links which might help. 1. zoubi.me/blog/php-get-image-byte-array 2. stackoverflow.com/questions/12537856/…

Community · Accepted Answer · 2017-05-23 12:29:24Z

0

For me this was a best solution:

$string = implode(array_map("chr", $image));

Here you can find different realizations: How can I convert array of bytes to a string in PHP?

edited May 23, 2017 at 12:29

CommunityBot

11 silver badge

answered Jul 30, 2014 at 14:14

Dmitriy Paul

231 silver badge3 bronze badges

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