private static void runTest(boolean isUnlimited) throws Exception {
System.out.println("Testing " + (isUnlimited ? "un" : "") + "limited policy...");
String algo = "Blowfish";
int keyLength = Cipher.getMaxAllowedKeyLength(algo);
AlgorithmParameterSpec spec = Cipher.getMaxAllowedParameterSpec(algo);
if (isUnlimited) {
if ((keyLength != Integer.MAX_VALUE) || (spec != null)) {
throw new Exception("Check for " + algo + " failed under unlimited policy");
}
} else {
if ((keyLength != 128) || (spec != null)) {
throw new Exception("Check for " + algo + " failed under default policy");
}
}
algo = "RC5";
keyLength = Cipher.getMaxAllowedKeyLength(algo);
RC5ParameterSpec rc5param = (RC5ParameterSpec) Cipher.getMaxAllowedParameterSpec(algo);
if (isUnlimited) {
if ((keyLength != Integer.MAX_VALUE) || (rc5param != null)) {
throw new Exception("Check for " + algo + " failed under unlimited policy");
}
} else {
if ((keyLength != 128)
|| (rc5param.getRounds() != 12)
|| (rc5param.getVersion() != Integer.MAX_VALUE)
|| (rc5param.getWordSize() != Integer.MAX_VALUE)) {
throw new Exception("Check for " + algo + " failed under default policy");
}
}
System.out.println("All tests passed");
}
public static void main(String[] args) throws Exception {
// decide if the installed jurisdiction policy file is the
// unlimited version
boolean isUnlimited = true;
Cipher c = Cipher.getInstance("AES", "SunJCE");
try {
c.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(new byte[24], "AES"));
} catch (InvalidKeyException ike) {
isUnlimited = false;
}
runTest(isUnlimited);
}