Admin: 1 версия

2010-06-01T05:01:23Z

1 версия

в 17:44, 31 мая 2010

2010-05-31T17:44:27Z

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== Sealed Objects ==



<source lang="java">
import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SealedObject;
public class MainClass {
public static void main(String[] args) throws Exception {
String creditCard = "1234567890";
KeyGenerator keyGenerator = KeyGenerator.getInstance("DESede");
Key key = keyGenerator.generateKey();
Cipher cipher = Cipher.getInstance("DESede");
cipher.init(Cipher.ENCRYPT_MODE, key);
SealedObject so = new SealedObject(creditCard, cipher);
String unencryptedCreditCard = (String) so.getObject(key);
System.out.println(unencryptedCreditCard);
}
}</source>



== using the name DESede rather than TripleDES ==



<source lang="java">
import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
public class MainClass {
public static void main(String[] args) throws Exception {
KeyGenerator keyGenerator = KeyGenerator.getInstance("DESede");
keyGenerator.init(168);
Key key = keyGenerator.generateKey();
Cipher cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] ciphertext = cipher.doFinal("text".getBytes("UTF8"));
for (int i = 0; i < ciphertext.length; i++) {
System.out.print(ciphertext[i] + " ");
}
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] decryptedText = cipher.doFinal(ciphertext);
System.out.println(new String(decryptedText, "UTF8"));
}
}
//-71 -27 -10 -67 -24 -37 -79 70 text</source>

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Java Tutorial/Security/DESede - История изменений

Admin: 1 версия

в 17:44, 31 мая 2010