I am getting the following exception when I try to read after having
connected to a SSL enabled FTP server:
main, handling exception: javax.net.ssl.SSLException: Unrecognized SSL
message, plaintext connection?

I am trying to instantiate a simple SSL client socket(connection to an
SSH port on a linux host (port 22) but get the below exception :
"javax.net.ssl.SSLException: Unrecognized SSL message, plaintext
connection?".

John,
I think a SecurityManager cannot be removed once its set. Look at this
code:
public class exps

I have an application that creates and uses a SecurityManager to
protect against potentially hostile client behavior.  If at some point
during execution, the application decides it is not working with
hostile clients, I want to disable/remove the SecurityManager.

I'm attempting to use web start to launch a thick client java app.
the app requires the clients authenticate themselves with
certificates.  Everything worked fine when the certs were kept in the
browser and the app ran as an applet however things aren't so nice on

I am trying to write an application that can use a keypair on a
smartcard for SSL client authentication.
I already have the program working for a certificate in a PKCS#12 file,
but am now looking for help on how to access the cards.

I would like to create an RSA key pair and an X509 cert and store both
of them in a JCA/JCE Key Store in Java2 SDK 1_4_2. I intend to use
them in another program to sign and encrypt xml documents.
I have figured out how to generate the RSA key pair using the

I've managed to generate a public and private key pair, and store them in
separate files.  Now, how do I go about using them to encrypt a file (using
the public key) and decrypt the file (using the private key)?
tia!

Hi. I've got a problem with the RSA ciphered streams. Here is a piece of
code that generates an exception :
KeyPairGenerator gen = KeyPairGenerator.getInstance("RSA");
 System.out.print("Generating the RSA key pair...");

I am doing an entry in the Java glossary on AES aka
Rijndael symmetric cipher.
I wonder if anyone knows of opensource Java implementations.
see http://mindprod.com/jgloss/aes.html

i added a menu bar in applet .in this menu there is option "open".
when we click on this  Filedialog should open but it is not happening.
some security exception is thrown.
can i change the permission through coding in applet file?

I'm trying to import a PKCS12 certificate into a Keystore:
KeyStore keyStore = KeyStore.getInstance( "PKCS12" );
keyStore.load( new FileInputStream( "/tmp/client.p12" ), "changeit".toCharArray() );
This code yields the exception below:

I just wanted to sign some hashes.
So I came quickly to www.bouncycastle.org . The classes from
bouncycastle offer to generate keys, encrypt or sign data and verify the
result against the keypair. => fine

Hi,
My plan is/ was to build a wrapper over the JCE (Java Crypto Extn)
API. However, while researching I bumped into this article - "Who
Trusts the Trustees?" @

I understand that the MD5 Message Digest algorithm takes as input a message
of arbitrary length and produces as output a 128-bit ``fingerprint'' or
``message digest'' of the input.
The output representation could be: