[flexcoders] As3Crypto - Can't read RSA Public Key

[Jim Boone]

Hi,

I posted this on the As3Crypto discussion list but there is very
little activity there.  Maybe someone in this group has encrypted
something using an RSA public key that they might share.

I am trying to read a RSA public key so I can encrypt data in my
application. I assembled a test app just to learn how the library
works. Unfortunately, I didn't get very far. I get the message "I DONT
KNOW HOW TO HANDLE DER stuff of TYPE 1" when I try to run the
following code. I have downloaded the latest source from trunk but I
still get the error. I generated the private and public keys using
openssl as shown below:

openssl genrsa -out private.pem 1024
openssl rsa -in private.pem -pubout -out public.pem

Any clue what is happening here?

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";
layout="absolute" creationComplete="init()">

        <mx:Script>
                <![CDATA[
                        import com.hurlant.util.Hex;
                        import com.hurlant.util.der.PEM;
                        import com.hurlant.crypto.rsa.RSAKey;

                        private var publicKey:String = "-----BEGIN
PUBLIC KEY-----"+
                       
"MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCq63UvOM+wA3FYLl7X5v5US1bd"+
                       
"BP43wScM3boptegIIIO0ghhzhtmCUv7/278Jow9xI/za0CTf8DL9pSDu8+T+RY7U"+
                       
"WOMaX/IK9D9tqxztDdPu29qSJFenun1O9OL+HaUYaNWSTLirHMZN67/aITtuyV6+"+
                        "ikAJfa9EOKAnT/CLIQIDAQAB"+
                        "-----END PUBLIC KEY-----";

                        private function init():void
                        {
                                var rsaPublicKey:RSAKey =
PEM.readRSAPublicKey(publicKey);

                                var message:ByteArray =
Hex.toArray("now listen to this");
                                var encryptedMessage:ByteArray = new
ByteArray;
                               
rsaPublicKey.encrypt(message,encryptedMessage,message.length);

                                trace(Hex.fromArray(encryptedMessage));
                        }
                ]]>
        </mx:Script>
</mx:Application>

~~~~~~~ Error ~~~~~~~~~~~~~~

I DONT KNOW HOW TO HANDLE DER stuff of TYPE 1
Error: Error #2030: End of file was encountered.
        at flash.utils::ByteArray/readBytes()
        at
com.hurlant.util.der::DER$/parse()[C:\flex\crypto_1.3\com\hurlant
\util\der\DER.as:134]
        at com.hurlant.util.der::PEM$/readRSAPublicKey()[C:\flex
\crypto_1.3\com\hurlant\util\der\PEM.as:84]
        at
Test/init()[C:\flex\workspaces\smtoolsPrototype\Test\src\Test.mxml:
28]

~Jim