Fx{r} is trying to start the Fx{r} Community! Please join our group on Adobe Groups following this link: http://fxr.groups.adobe.com.

Fx{r} is now on Twitter too. Follow us @ twitter.com/fx_r!

« Flex and PHP – Party in the Front, Business in the Back
» Access the Query-String Variables from Flex Application

ActionScript, Security

As3Crypto – ActionScript 3 Cryptography Library

Andrei Ionescu | 27.11.07 | 12 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 2, HMAC, Random, TLS-PRF, some ASN-1/DER parsing and more.

Demo for the class is found at http://crypto.hurlant.com/demo/, sources at http://crypto.hurlant.com/demo/srcview/, archive for download here (http://crypto.hurlant.com/demo/srcview/Crypto.zip) and the SWC can be downloaded from http://crypto.hurlant.com/demo/as3crypto.swc.

Share and Enjoy:

Hello there! If you are new here, you might want to subscribe to the RSS feed for updates on this topic.

Tags: ActionScript, Algorithms, cryptograpy, Security

This post was written by Andrei Ionescu

Views: 15356

Override classes from included libraries

Spell Checker in Actionscript 3: Spelling Plus Library (SPL)

Adobe Developer Library

How To Build Flash Player 10 Applications using Flex SDK

Flash Import Error: “One or more files were not imported because there were problems reading them”

12 Comments

On 11.02.08 Paul wrote these pithy words:
It would be nice to see some implementation source. I am new to Flex but need RSA encrytion to communicate with our PHP backend system.

How would I get a list of methods and properties for this library?
On 11.03.08 Andrei Ionescu wrote these pithy words:

Paul, as specified in the article, the sources for the example can be viewed here. You can take a look into the com.hurlant.crypto.tests package to see how MD5 class is used.

Depending on the mode/kind of communication you may solve the problem without using As3Crypto because flash player knows about certificates and other things.

We will try to make an example as soon as possible.
On 11.07.08 Phil wrote these pithy words:
Paul, Ive had real trouble getting PHP to talk to AS3Crypto – i just cant seem to get AS3crypto to verify my Digital Sig generated by PHP
On 06.23.09 BubbleBoy wrote these pithy words:
Sigh. I have now spent 5 hours on this library. And I am quite good with as3/flex. I have tried reading up on wikipedia the different stuff etc, but I still don’t understand how to use the RSA. The Crypto.as (i.e the example class) lacks an implementation of RSA, and the functions in the RSA-class doesn ot have names that makes it any clearer. What are the different parameters: N, E, D, P, Q,DP, DQ, C? No documentation anywhere, no example anywhere?

I would love to have something like:
```
msg = "hello my secret lover";
encryptedMsg = Rsa.encrypt (msg, publicKey);
Rsa.decrypt (encryptedMsg, privateKey);
```
but i cant find anything like it anywhere?

Would be very grateful for any advice or suggestions on how to get started
On 07.06.09 Barry Comer wrote these pithy words:
Is it possible to extract the digest from a credential file sing this library?
On 08.09.09 mahesh wrote these pithy words:
how to reverse a string in flex 3
i need this to do encryption
On 08.13.09 mahesh wrote these pithy words:
msg={this is flex}
i would like to have the string in reverse i.e
xelf si siht
On 08.13.09 Andrei Ionescu wrote these pithy words:
To reverse a string do this:
```
var reverseStr:String = normalStr.split("").reverse().join("");
```
Is that simple!
On 08.15.09 Deepthi wrote these pithy words:
I would be very grateful if u suggest me how to write a program on encryption and decryption in flex
On 08.15.09 Deepthi wrote these pithy words:
I would be grateful if u can write a program on encrypt nd decrypting the text in flexbuilder3
On 02.25.10 Security Tips wrote these pithy words:
Hello DearAndrei Ionescu. You post very useful URL.
Thanks a lot.

By the way, I just came across a good article on Cryptography. Click this link
On 08.10.11 feroz pasha wrote these pithy words:
in actionscript can we do AES ENCRYPTION WITH PKCS7 padding

if yes.

please help me out

have your say

Add your comment below, or trackback from your own site. Subscribe to these comments.

Be nice. Keep it clean. Stay on topic. No spam.

You can use these tags:
<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong> <pre lang="" line="" escaped="">

« Flex and PHP – Party in the Front, Business in the Back
» Access the Query-String Variables from Flex Application

FLEX{er}

flex developers web corner

about

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. [...]

Twitter

search

partners

recent

comments

Zeeshan: Great work, I was wondering how can I crop image with mouse? Thanks
uday: Hi, Thanks for writing up something which i exactly needed. I am trying this out, but not able to get this to...
parrew: Thanks.. it work.. thumbs up!!!
ccl: I have a button that creates a TitleWindow, after the new title window is created I want the focus to return to...
John Evans: You totally saved me with this. Thanks.