The AS3 corelib has an MD5 algorithm implemented.

http://labs.adobe.com/wiki/index.php/ActionScript_3:resources:apis:libra\
ries
<http://labs.adobe.com/wiki/index.php/ActionScript_3:resources:apis:libr\
aries>

Probably the safest way to send data, though, would be to send over
HTTPS rather than HTTP.  If your data really are of a sensitive nature,
then your server should be configured to accept HTTPS/SSL connections. 
Part of security is also verifying that the server you are communicating
with is who you think it is; data encryption alone won't accomplish
that, but SSL will.

HTH,
Doug


--- In [email protected], "André Rodrigues Pena"
<[EMAIL PROTECTED]> wrote:
>
> Hi all,
>
> I'm looking for someway to encrypt the information I'm sending through
> HTTPService via POST.
>
> I need this information to be decrypted inside a JSP script at the
> back-end. So I need a encryption method that has a corresponding
> decryption method at server-side (Java)
>
> I'm not experienced with cryptography. If you already solved some
> problem like that. Please help.
>
> --
> André Rodrigues Pena
>


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