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| 36. 5. 2. Create a Blowfish key, encrypts some text,prints the ciphertext, then decrypts the text |
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import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
public class MainClass {
public static void main(String[] args) throws Exception {
String text = "java2s";
KeyGenerator keyGenerator = KeyGenerator.getInstance("Blowfish");
keyGenerator.init(128);
Key key = keyGenerator.generateKey();
Cipher cipher = Cipher.getInstance("Blowfish/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"));
}
}
//-126 -104 127 -75 -34 -71 -94 -96 java2s
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