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• Flex 3 SDK, Flex Builder 3, Flex news, Security

  Flex 3.4 SDK Available – Is a Security Update for Flex SDK

  Andrei Ionescu | 20.08.09 | Permalink | Comment?

  The 3.4 version of Flex SDK is available. An important vulnerability has been identified in Flex 3.3 SDK and earlier versions which could result in cross-site scripting. This technote explains the important vulnerability found in the previous version of the Flex SDK.
  Please go to Adobe Open Source website and download the Flex 3.4 SDK version.
  It [...]

• AIR, Bugs, Flash, Flash Player, Security

  New Versions of Flash Player and AIR Available

  Andrei Ionescu | 03.08.09 | Permalink | Comment?

  Last end of the week has been a busy time for Adobe. They released quite a few updates to Flash and AIR platforms and some security updates for Flash Player, Acrobat Reader and Acrobat.
  Now the last public version of Flash Player is 10.0.32.18 and can be downloaded from http://get.adobe.com/flashplayer/. The update refers to this security [...]

• AIR, ActionScript, Errors, How to, Security

  SecurityError: Error #3015: Loader.loadBytes() is not permitted to load content with executable code.

  Andrei Ionescu | 27.01.09 | Permalink | 4 Comments

  Today I managed to find this error twice. It is happening in AIR applications. I had the same application in Flex and then I ported it to AIR. The error that appeared is this:
  SecurityError: Error #3015: Loader.loadBytes() is not permitted to load content with executable code.
  The error is saying that you’re no more allowed to [...]

• ActionScript, Flash Player, Security

  Adobe Player Security Update

  Virgil Cristea | 25.03.08 | Permalink | Comment?

  Adobe plans to release a new security update for the Flash Player on 9 April 2008. The update plans to fix the issues listed in the December 2007 Security Bulletin ABSP07-20 for DNS rebinding and cross-domain policy file vulnerabilities, and Security [...]

• ActionScript, Security

  As3Crypto – ActionScript 3 Cryptography Library

  Andrei Ionescu | 27.11.07 | Permalink | 10 Comments

  Today I found this interesting library – AS3 Crypto Framework 1.3. Many algorithms used for cryptography are implemented in this class: TLS 1.0 support (partial), X.509 Certificate parsing and validation, RSA (encrypt/decrypt, sign/verify), AES, DES, 3DES, BlowFish, XTEA, RC4, ECB, CBC, CFB, CFB8, OFB, CTR, MD2, MD5, SHA-1, SHA-224, SHA-256, PKCS#5, PKCS#1 type 1 and [...]

• ActionScript, Security

  CAPTCHA in Flex – Using to Check the User

  Andrei Ionescu | 09.11.07 | Permalink | 3 Comments

  Now here is an example how to check a user using our CAPTCHA.
  
  For source files see bellow.

• ActionScript, Security

  CAPTCHA in Flex – Running Example

  Andrei Ionescu | 01.11.07 | Permalink | 10 Comments

  And now here is a running example. This shows how to generate a CAPTCHA setting about 4 parameters.
  
  More parameters can be added to this example, like dots size, polygons transparency, font size but all that are features.
  Enjoy!
  PS: Sources are bellow.

• ActionScript, Security

  CAPTCHA in Flex – Main Class

  Andrei Ionescu | 30.10.07 | Permalink | 2 Comments

  Recently I needed to implement a CAPTCHA (means: “Completely Automated Public Turing test to tell Computers and Humans Apart” – on wikipedia) functionality to a sign-up form in flex.
  So here is the class:

  public class Captcha extends Canvas
  {
  private const CAPTCHA_WIDTH:uint = 120;
  private const CAPTCHA_HEIGHT:uint = 40;
  [...]

• Flex resources, Made in Flex, Security

  Cross domain policy

  Andrei Ionescu | 17.10.07 | Permalink | Comment?

  Some times you may pass over the following problem: the data doesn’t loads although the flex application is showing busy cursor. It remains in the loading process but it doesn’t finish. One of the following thing happens:

  As you can see in the image above the SWF is not accessing the same domain it come from [...]

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FLEX{er} is a tool where information regarding Flex & Actionscript programming languages is gathered starting from general info like books and resources and going to examples of actionscript for specific problems. [...]

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comments

• rodiq: I looked a lot for a multiselect component, it is just great! In my case, I just modified it to work with...
• Nami: Thank you !!
• Gert-Jan van der Wel: It seems to work when you pass in the whole path of the class. var myClass:Class =...
• Andrei Ionescu: Cornelius, thanks for your fix.
• Cornelius: In the end, you forgot the case of a right-aligned image: if (getStyle("horizontalAlign") == "right")...