public static final void main(String[] args) throws Exception {
// Generate a PBE key
SecretKeyFactory skFac = SecretKeyFactory.getInstance("PBE");
SecretKey skey = skFac.generateSecret(new PBEKeySpec("test123".toCharArray()));
// Initialize the PBE cipher
Cipher cipher = Cipher.getInstance(ALGO);
cipher.init(Cipher.ENCRYPT_MODE, skey);
// Permit access to the Cipher.spi field (a CipherSpi object)
Field spi = Cipher.class.getDeclaredField("spi");
spi.setAccessible(true);
Object value = spi.get(cipher);
// Permit access to the CipherSpi.engineGetKeySize method
Method engineGetKeySize =
PKCS12PBECipherCore$PBEWithSHA1AndDESede.class.getDeclaredMethod(
"engineGetKeySize", Key.class);
engineGetKeySize.setAccessible(true);
// Check the key size
int keySize = (int) engineGetKeySize.invoke(value, skey);
if (keySize == KEYSIZE) {
System.out.println(ALGO + ".engineGetKeySize returns " + keySize + " bits, as expected");
System.out.println("OK");
} else {
throw new Exception("ERROR: " + ALGO + " key size is incorrect");
}
}
/**
* Copy from the copy method in StructUtil. Did not want to drag that code in. maybe this actually
* should go to struct.
*
* @param from
* @param to
* @param excludes
* @return
* @throws Exception
*/
public static <T extends struct> T xcopy(struct from, T to, String... excludes) throws Exception {
Arrays.sort(excludes);
for (Field f : from.fields()) {
if (Arrays.binarySearch(excludes, f.getName()) >= 0) continue;
Object o = f.get(from);
if (o == null) continue;
Field tof = to.getField(f.getName());
if (tof != null)
try {
tof.set(to, Converter.cnv(tof.getGenericType(), o));
} catch (Exception e) {
System.out.println(
"Failed to convert "
+ f.getName()
+ " from "
+ from.getClass()
+ " to "
+ to.getClass()
+ " value "
+ o
+ " exception "
+ e);
}
}
return to;
}
/**
* Parses a field type definition
*
* @param docField
* @return
*/
protected static Field ParseField(FieldDoc docField) {
assert (docField != null);
Field xmlField = new Field();
xmlField.name = docField.name();
xmlField.comment = docField.commentText();
xmlField.type = ParseType(docField.type());
xmlField.isFinal = docField.isFinal();
if (xmlField.isFinal) {
xmlField.finalExpression = docField.constantValueExpression();
} else if (docField.constantValueExpression() != null) {
// how would a non-final field have a constant value expression?
// my understanding is that this field is only != null when is not final
assert (false);
}
xmlField.isStatic = docField.isStatic();
xmlField.isVolatile = docField.isVolatile();
xmlField.isTransient = docField.isTransient();
xmlField.scope = DetermineScope(docField);
// parse annotations from the field
xmlField.annotationInstances =
ParseAnnotationInstances(docField.annotations(), docField.qualifiedName());
return xmlField;
}
public static Object getAdapterSelf(Class<?> adapterClass, Object adapter)
throws NoSuchFieldException, IllegalAccessException {
Field self = adapterClass.getDeclaredField("self");
return self.get(adapter);
}