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import java.security.Security;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
public class MainClass {
public static void main(String args[]) throws Exception {
Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
SecretKey key = KeyGenerator.getInstance("DES").generateKey();
// for CBC; must be 8 bytes
byte[] initVector = new byte[] { 0x10, 0x10, 0x01, 0x04, 0x01, 0x01, 0x01, 0x02 };
AlgorithmParameterSpec algParamSpec = new IvParameterSpec(initVector);
Cipher m_encrypter = Cipher.getInstance("DES/CBC/PKCS5Padding");
Cipher m_decrypter = Cipher.getInstance("DES/CBC/PKCS5Padding");
m_encrypter.init(Cipher.ENCRYPT_MODE, key, algParamSpec);
m_decrypter.init(Cipher.DECRYPT_MODE, key, algParamSpec);
byte[] clearText = "www.java2java.com".getBytes();
byte[] encryptedText = m_encrypter.doFinal(clearText);
byte[] decryptedText = m_decrypter.doFinal(encryptedText);
System.out.println(new String(clearText));
System.out.println(new String(encryptedText));
System.out.println(new String(decryptedText));
}
}
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DESCrypterandDecrypter.zip( 1,198 k)