Hi,
I want to generate secret key for encrypting a credit card number. But It provide a error as follow:
java.lang.NoClassDefFoundError
at javax.crypto.KeyGenerator.getInstance([DashoPro-V1.2-120198])
Could anyone tell me what this error is?
any help I would highly appreciate.
Van Duong
My code:
import java.security.*;
import javax.crypto.*;
/**
* This program demonstrates how to generate a secret-key object for
* HMAC-MD5, and initialize an HMAC-MD5 object with it.
*/
public class initMac { public static void main(String[] args) throws Exception { // Install SunJCE provider
Provider sunJce = new com.sun.crypto.provider.SunJCE();
Security.addProvider(sunJce);
// Generate secret key for HMAC-MD5
KeyGenerator kg = KeyGenerator.getInstance("HmacMD5");
SecretKey sk = kg.generateKey();
// Get instance of Mac object implementing HMAC-MD5, and
// initialize it with the above secret key
Mac mac = Mac.getInstance("HmacMD5");
mac.init(sk);
byte[] result = mac.doFinal("Hi There".getBytes());
}
}
That
consists of 4 jars known collectively as JCE (Java Cryptography
Extension). The current version is 1.2.1.
jce1_2_1.jar
local_policy.jar
sunjce_provider.jar
US_export_policy.jar
jce1_2_1.jar is the actual API. sunjce_provider.jar is Suns'
implementation of their API. It contains the actual algorithms and code that
does all the work. Offhand, I don't know of any other 3rd parties that have
implemented the API.
These files must be downloaded from Sun's website at this
URL..
DP
Hi,
Does anyone can tell me where the
package javax.crypto is?
Thanks in advance,
Van
Duong
