simplepolicytest.java

来自「Getting started examples for the JCE and」· Java 代码 · 共 47 行

package chapter1;

import javax.crypto.*;
import javax.crypto.spec.*;

/**
 * Test to make sure the unrestricted policy files are installed.
 */
public class SimplePolicyTest
{
    public static void main(
        String[] args)
    throws Exception
    {
        byte[] data = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };

        // create a 64 bit secret key from raw bytes

        SecretKey key64 = new SecretKeySpec(new byte[] { 0x00, 0x01, 0x02,
                0x03, 0x04, 0x05, 0x06, 0x07 }, "Blowfish");

        // create a cipher and attempt to encrypt the data block with our key

        Cipher c = Cipher.getInstance("Blowfish/ECB/NoPadding");

        c.init(Cipher.ENCRYPT_MODE, key64);
        c.doFinal(data);
        System.out.println("64 bit test: passed");

        // create a 192 bit secret key from raw bytes

        SecretKey key192 = new SecretKeySpec(new byte[] { 0x00, 0x01, 0x02,
                0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
                0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
                0x17 }, "Blowfish");

        // now try encrypting with the larger key

        c.init(Cipher.ENCRYPT_MODE, key192);
        c.doFinal(data);
        System.out.println("192 bit test: passed");

        System.out.println("Tests completed");
    }
}