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23 
24 /**
25  * @test
26  * @bug 8151149
27  * @modules java.base/javax.crypto:open
28  *          java.base/com.sun.crypto.provider:+open
29  */
30 
31 import java.lang.reflect.*;
32 import java.security.*;
33 import javax.crypto.*;
34 import javax.crypto.spec.*;
35 import com.sun.crypto.provider.*;
36 
37 public class CheckPBEKeySize {
38 
39     private static final String ALGO = "PBEWithSHA1AndDESede";
40     private static final int KEYSIZE = 112; // Triple DES effective key size
41 
main(String[] args)42     public static final void main(String[] args) throws Exception {
43 
44         // Generate a PBE key
45         SecretKeyFactory skFac = SecretKeyFactory.getInstance("PBE");
46         SecretKey skey =
47             skFac.generateSecret(new PBEKeySpec("test123".toCharArray()));
48 
49         // Initialize the PBE cipher
50         Cipher cipher = Cipher.getInstance(ALGO);
51         cipher.init(Cipher.ENCRYPT_MODE, skey);
52 
53         // Permit access to the Cipher.spi field (a CipherSpi object)
54         Field spi = Cipher.class.getDeclaredField("spi");
55         spi.setAccessible(true);
56         Object value = spi.get(cipher);
57 
58         // Permit access to the CipherSpi.engineGetKeySize method
59         Method engineGetKeySize =
60             PKCS12PBECipherCore$PBEWithSHA1AndDESede.class
61                 .getDeclaredMethod("engineGetKeySize", Key.class);
62         engineGetKeySize.setAccessible(true);
63 
64         // Check the key size
65         int keySize = (int) engineGetKeySize.invoke(value, skey);
66         if (keySize == KEYSIZE) {
67             System.out.println(ALGO + ".engineGetKeySize returns " + keySize +
68                 " bits, as expected");
69             System.out.println("OK");
70         } else {
71             throw new Exception("ERROR: " + ALGO + " key size is incorrect");
72         }
73     }
74 }
75