Java Security - IllegalBlockSizeException

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Author

IllegalBlockSizeException

Tumzadoc

2005-06-10, 8:58 am

Hi
I'm trying to encrypt a 256 bytes of data using a 2048 bits RSA key.
----Code Snippet----
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, rsaPublic);
encryptedData = cipher.doFinal(originalData);
----End of Code Snippet----

It gives me the following exception :
javax.crypto.IllegalBlockSizeException: Data must not be longer than 245
bytes

Is it possible to encrypt data of over 246 bytes using RSA? If yes how do
i go about doing it

Thanx

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