def main(model_name, adv_model_names, model_type):
np.random.seed(0)
assert keras.backend.backend() == "tensorflow"
# Get MNIST test data
X_train, Y_train, X_test, Y_test = data_mnist()
data_gen = data_gen_mnist(X_train)
x = K.placeholder(shape=(None, 28, 28, 1))
y = K.placeholder(shape=(BATCH_SIZE, 10))
eps = args.eps
norm = args.norm
# if src_models is not None, we train on adversarial examples that come
# from multiple models
adv_models = [None] * len(adv_model_names)
ens_str = ''
for i in range(len(adv_model_names)):
adv_models[i] = load_model(adv_model_names[i])
if len(adv_models) > 0:
name = basename(adv_model_names[i])
model_index = name.replace('model', '')
ens_str += model_index
model = model_mnist(type=model_type)
x_advs = [None] * (len(adv_models) + 1)
for i, m in enumerate(adv_models + [model]):
if args.iter == 0:
logits = m(x)
grad = gen_grad(x, logits, y, loss='training')
x_advs[i] = symbolic_fgs(x, grad, eps=eps)
elif args.iter == 1:
x_advs[i] = iter_fgs(m, x, y, steps=40, alpha=0.01, eps=args.eps)
# Train an MNIST model
tf_train(x,
y,
model,
X_train,
Y_train,
data_gen,
x_advs=x_advs,
benign=args.ben)
# Finally print the result!
test_error = tf_test_error_rate(model, x, X_test, Y_test)
print('Test error: %.1f%%' % test_error)
model_name += '_' + str(eps) + '_' + str(norm) + '_' + ens_str
if args.iter == 1:
model_name += 'iter'
if args.ben == 0:
model_name += '_nob'
save_model(model, model_name)
json_string = model.to_json()
with open(model_name + '.json', 'wr') as f:
f.write(json_string)
def main(model_name, adv_model_names, model_type):
np.random.seed(0)
assert keras.backend.backend() == "tensorflow"
set_flags(24)
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
K.set_session(tf.Session(config=config))
flags.DEFINE_integer('NUM_EPOCHS', args.epochs, 'Number of epochs')
flags.DEFINE_integer('type', args.type, 'model type')
# Get MNIST test data
X_train, Y_train, X_test, Y_test = load_data()
data_gen = data_flow(X_train)
x = K.placeholder(shape=(None,
FLAGS.NUM_CHANNELS,
FLAGS.IMAGE_ROWS,
FLAGS.IMAGE_COLS))
y = K.placeholder(shape=(FLAGS.BATCH_SIZE, FLAGS.NUM_CLASSES))
eps = args.eps
# if src_models is not None, we train on adversarial examples that come
# from multiple models
adv_models = [None] * len(adv_model_names)
for i in range(len(adv_model_names)):
adv_models[i] = load_model(adv_model_names[i])
model = model_select(type=model_type)
x_advs = [None] * (len(adv_models) + 1)
for i, m in enumerate(adv_models + [model]):
logits = m(x)
grad = gen_grad(x, logits, y, loss='training')
x_advs[i] = symbolic_fgs(x, grad, eps=eps)
# Train
tf_train(x, y, model, X_train, Y_train, data_gen, model_name, x_advs=x_advs, epochs=args.epochs)
# Finally print the result!
test_error = tf_test_error_rate(model, x, X_test, Y_test)
with open(model_name + '_log.txt', 'a') as log:
log.write('Test error: %.1f%%' % test_error)
print('Test error: %.1f%%' % test_error)
save_model(model, model_name)
json_string = model.to_json()
with open(model_name+'.json', 'w') as f:
f.write(json_string)
def main(model_name, adv_model_names, model_type):
np.random.seed(0)
assert keras.backend.backend() == "tensorflow"
set_mnist_flags()
flags.DEFINE_bool('NUM_EPOCHS', args.epochs, 'Number of epochs')
# Get MNIST test data
X_train, Y_train, X_test, Y_test = data_mnist()
data_gen = data_gen_mnist(X_train)
x = K.placeholder(shape=(None, FLAGS.IMAGE_ROWS, FLAGS.IMAGE_COLS,
FLAGS.NUM_CHANNELS))
y = K.placeholder(shape=(FLAGS.BATCH_SIZE, FLAGS.NUM_CLASSES))
eps = args.eps
# if src_models is not None, we train on adversarial examples that come
# from multiple models
adv_models = [None] * len(adv_model_names)
for i in range(len(adv_model_names)):
adv_models[i] = load_model(adv_model_names[i])
model = model_mnist(type=model_type)
x_advs = [None] * (len(adv_models) + 1)
for i, m in enumerate(adv_models + [model]):
logits = m(x)
grad = gen_grad(x, logits, y, loss='training')
x_advs[i] = symbolic_fgs(x, grad, eps=eps)
# Train an MNIST model
tf_train(x, y, model, X_train, Y_train, data_gen, x_advs=x_advs)
# Finally print the result!
test_error = tf_test_error_rate(model, x, X_test, Y_test)
print('Test error: %.1f%%' % test_error)
save_model(model, model_name)
json_string = model.to_json()
with open(model_name + '.json', 'wr') as f:
f.write(json_string)
def main(adv_model_names):
np.random.seed(0)
assert keras.backend.backend() == "tensorflow"
set_model_flags()
tf.reset_default_graph()
g = tf.get_default_graph()
x = tf.placeholder(
tf.float32,
shape=[None, FLAGS.IMAGE_ROWS, FLAGS.IMAGE_COLS, FLAGS.NUM_CHANNELS])
y = tf.placeholder(tf.float32, shape=[None, FLAGS.NUM_CLASSES])
train_mode = tf.placeholder(tf.bool)
eps = FLAGS.EPS
# if src_models is not None, we train on adversarial examples that come
# from multiple models
# load from out source
adv_models = [None] * len(adv_model_names)
for i, name in enumerate(adv_model_names):
adv_models[i] = load_model(name, path="./models/" + name + "-save.npy")
x_advs = [None] * (len(adv_models))
for i, m in enumerate(adv_models):
logits, _ = m(x)
grad = gen_grad(x, logits, y, loss='training')
x_advs[i] = symbolic_fgs(x, grad, eps=eps)
data = dataset(FLAGS.DIR, normalize=False)
sess, graph_dict = tf_train(g,
x,
y,
data,
defense_model,
train_mode,
x_advs=x_advs)
# Finally print the result!
test_error = tf_test_error_rate(sess, graph_dict, data, x_advs)
print('Test error: %.1f%%' % test_error)
def main(attack, src_model_name, target_model_name):
np.random.seed(0)
tf.set_random_seed(0)
dim = 28 * 28 * 1
x = K.placeholder((None,
28,
28,
1))
y = K.placeholder((None, 10))
_, _, X_test, Y_test = data_mnist()
Y_test_uncat = np.argmax(Y_test, axis=1)
# source model for crafting adversarial examples
src_model = load_model(src_model_name)
# model(s) to target
target_model = load_model(target_model_name)
# simply compute test error
if attack == "test":
_, _, err = tf_test_error_rate(src_model, x, X_test, Y_test)
print('{}: {:.1f}'.format(basename(src_model_name), err))
_, _, err = tf_test_error_rate(target_model, x, X_test, Y_test)
print('{}: {:.1f}'.format(basename(target_model_name), err))
return
if args.targeted_flag == 1:
targets = []
allowed_targets = list(range(10))
for i in range(len(Y_test)):
allowed_targets.remove(Y_test_uncat[i])
targets.append(np.random.choice(allowed_targets))
allowed_targets = list(range(10))
targets = np.array(targets)
print(targets)
targets_cat = np_utils.to_categorical(targets, 10).astype(np.float32)
Y_test = targets_cat
logits = src_model(x)
print('logits', logits)
if args.loss_type == 'xent':
loss, grad = gen_grad_ens(x, logits, y)
assert grad is not None
elif args.loss_type == 'cw':
grad = gen_grad_cw(x, logits, y)
if args.targeted_flag == 1:
grad = -1.0 * grad
for eps in eps_list:
# FGSM and RAND+FGSM one-shot attack
if attack in ["fgs", "rand_fgs"] and args.norm == 'linf':
assert grad is not None
adv_x = symbolic_fgs(x, grad, eps=eps)
elif attack in ["fgs", "rand_fgs"] and args.norm == 'l2':
adv_x = symbolic_fg(x, grad, eps=eps)
# iterative FGSM
if attack == "ifgs":
l = 1000
X_test = X_test[0:l]
Y_test = Y_test[0:l]
adv_x = x
# iteratively apply the FGSM with small step size
for i in range(args.num_iter):
adv_logits = src_model(adv_x)
if args.loss_type == 'xent':
loss, grad = gen_grad_ens(adv_x, adv_logits, y)
elif args.loss_type == 'cw':
grad = gen_grad_cw(adv_x, adv_logits, y)
if args.targeted_flag == 1:
grad = -1.0 * grad
adv_x = symbolic_fgs(adv_x, grad, args.delta, True)
r = adv_x - x
r = K.clip(r, -eps, eps)
adv_x = x + r
adv_x = K.clip(adv_x, 0, 1)
print('Generating adversarial samples')
X_adv = batch_eval([x, y], [adv_x], [X_test, Y_test])[0]
avg_l2_perturb = np.mean(np.linalg.norm((X_adv - X_test).reshape(len(X_test), dim), axis=1))
# white-box attack
l = len(X_adv)
print('Carrying out white-box attack')
preds_adv, orig, err = tf_test_error_rate(src_model, x, X_adv, Y_test[0:l])
if args.targeted_flag == 1:
err = 100.0 - err
print('{}->{}: {:.1f}'.format(src_model_name, src_model_name, err))
# black-box attack
if target_model_name is not None:
print('Carrying out black-box attack')
preds, _, err = tf_test_error_rate(target_model, x, X_adv, Y_test)
if args.targeted_flag == 1:
err = 100.0 - err
print('{}->{}: {:.1f}, {}, {} {}'.format(src_model_name,
basename(target_model_name), err,
avg_l2_perturb, eps, attack))
def main(attack, src_model_name, target_model_names, data_train_dir,
data_test_dir):
np.random.seed(0)
tf.set_random_seed(0)
flags.DEFINE_integer('BATCH_SIZE', 32, 'Size of batches')
set_gtsrb_flags()
# Get MNIST test data
_, _, X_test, Y_test = load_data(data_train_dir, data_test_dir)
# One-hot encode image labels
label_binarizer = LabelBinarizer()
Y_test = label_binarizer.fit_transform(Y_test)
x = tf.placeholder(tf.float32, (None, 32, 32, 1))
y = tf.placeholder(tf.int32, (None))
one_hot_y = tf.one_hot(y, 43)
# source model for crafting adversarial examples
src_model = load_model(src_model_name)
# model(s) to target
target_models = [None] * len(target_model_names)
for i in range(len(target_model_names)):
target_models[i] = load_model(target_model_names[i])
# simply compute test error
if attack == "test":
err = tf_test_error_rate(src_model, x, X_test, Y_test)
print '{}: {:.3f}'.format(basename(src_model_name), err)
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_test, Y_test)
print '{}: {:.3f}'.format(basename(name), err)
return
eps = args.eps
# take the random step in the RAND+FGSM
if attack == "rand_fgs":
X_test = np.clip(
X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)), 0.0,
1.0)
eps -= args.alpha
logits = src_model(x)
grad = gen_grad(x, logits, y)
# FGSM and RAND+FGSM one-shot attack
if attack in ["fgs", "rand_fgs"]:
adv_x = symbolic_fgs(x, grad, eps=eps)
# iterative FGSM
if attack == "ifgs":
adv_x = iter_fgs(src_model,
x,
y,
steps=args.steps,
eps=args.eps / args.steps)
# Carlini & Wagner attack
if attack == "CW":
X_test = X_test[0:1000]
Y_test = Y_test[0:1000]
cli = CarliniLi(K.get_session(),
src_model,
targeted=False,
confidence=args.kappa,
eps=args.eps)
X_adv = cli.attack(X_test, Y_test)
r = np.clip(X_adv - X_test, -args.eps, args.eps)
X_adv = X_test + r
err = tf_test_error_rate(src_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name),
basename(src_model_name), err)
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name),
basename(name), err)
return
if attack == "grad_ens":
X_test = np.clip(
X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)), 0.0,
1.0)
eps -= args.alpha
sub_model_ens = (sub_model_1, sub_model_2)
sub_models = [None] * len(sub_model_ens)
for i in range(len(sub_model_ens)):
sub_models[i] = load_model(sub_model_ens[i])
adv_x = x
for j in range(args.steps):
for i, m in enumerate(sub_models + [src_model]):
logits = m(adv_x)
gradient = gen_grad(adv_x, logits, y)
adv_x = symbolic_fgs(adv_x,
gradient,
eps=args.eps / args.steps,
clipping=True)
# compute the adversarial examples and evaluate
X_adv = batch_eval([x, y], [adv_x], [X_test, Y_test])[0]
# white-box attack
err = tf_test_error_rate(src_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name),
basename(src_model_name), err)
# black-box attack
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name), basename(name),
err)
def main(attack, src_model_name, target_model_names):
np.random.seed(0)
tf.set_random_seed(0)
flags.DEFINE_integer('BATCH_SIZE', 10, 'Size of batches')
set_mnist_flags()
x = K.placeholder(
(None, FLAGS.IMAGE_ROWS, FLAGS.IMAGE_COLS, FLAGS.NUM_CHANNELS))
y = K.placeholder((None, FLAGS.NUM_CLASSES))
_, _, X_test, Y_test = data_mnist()
# source model for crafting adversarial examples
src_model = load_model(src_model_name)
# model(s) to target
target_models = [None] * len(target_model_names)
for i in range(len(target_model_names)):
target_models[i] = load_model(target_model_names[i])
# simply compute test error
if attack == "test":
err = tf_test_error_rate(src_model, x, X_test, Y_test)
print '{}: {:.1f}'.format(basename(src_model_name), err)
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_test, Y_test)
print '{}: {:.1f}'.format(basename(name), err)
return
eps = args.eps
# take the random step in the RAND+FGSM
if attack == "rand_fgs":
X_test = np.clip(
X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)), 0.0,
1.0)
eps -= args.alpha
logits = src_model(x)
grad = gen_grad(x, logits, y)
# FGSM and RAND+FGSM one-shot attack
if attack in ["fgs", "rand_fgs"]:
adv_x = symbolic_fgs(x, grad, eps=eps)
# iterative FGSM
if attack == "ifgs":
adv_x = iter_fgs(src_model,
x,
y,
steps=args.steps,
eps=args.eps / args.steps)
# Carlini & Wagner attack
if attack == "CW":
X_test = X_test[0:1000]
Y_test = Y_test[0:1000]
cli = CarliniLi(K.get_session(),
src_model,
targeted=False,
confidence=args.kappa,
eps=args.eps)
X_adv = cli.attack(X_test, Y_test)
r = np.clip(X_adv - X_test, -args.eps, args.eps)
X_adv = X_test + r
err = tf_test_error_rate(src_model, x, X_adv, Y_test)
print '{}->{}: {:.1f}'.format(basename(src_model_name),
basename(src_model_name), err)
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_adv, Y_test)
print '{}->{}: {:.1f}'.format(basename(src_model_name),
basename(name), err)
return
# compute the adversarial examples and evaluate
X_adv = batch_eval([x, y], [adv_x], [X_test, Y_test])[0]
# white-box attack
err = tf_test_error_rate(src_model, x, X_adv, Y_test)
print '{}->{}: {:.1f}'.format(basename(src_model_name),
basename(src_model_name), err)
# black-box attack
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_adv, Y_test)
print '{}->{}: {:.1f}'.format(basename(src_model_name), basename(name),
err)
def main(args):
def get_model_type(model_name):
model_type = {
'models/modelA': 0,
'models/modelA_adv': 0,
'models/modelA_ens': 0,
'models/modelB': 1,
'models/modelB_adv': 1,
'models/modelB_ens': 1,
'models/modelC': 2,
'models/modelC_adv': 2,
'models/modelC_ens': 2,
'models/modelD': 3,
'models/modelD_adv': 3,
'models/modelD_ens': 3,
}
if model_name not in model_type.keys():
raise ValueError('Unknown model: {}'.format(model_name))
return model_type[model_name]
torch.manual_seed(args.seed)
device = torch.device('cuda' if args.cuda else 'cpu')
'''
Preprocess MNIST dataset
'''
kwargs = {'num_workers': 20, 'pin_memory': True} if args.cuda else {}
test_loader = torch.utils.data.DataLoader(datasets.MNIST(
'../attack_mnist', train=False, transform=transforms.ToTensor()),
batch_size=args.batch_size,
shuffle=True,
**kwargs)
# source model for crafting adversarial examples
src_model_name = args.src_model
type = get_model_type(src_model_name)
src_model = load_model(src_model_name, type).to(device)
# model(s) to target
target_model_names = args.target_models
target_models = [None] * len(target_model_names)
for i in range(len(target_model_names)):
type = get_model_type(target_model_names[i])
target_models[i] = load_model(target_model_names[i],
type=type).to(device)
attack = args.attack
# simply compute test error
if attack == 'test':
correct_s = 0
with torch.no_grad():
for (data, labels) in test_loader:
data, labels = data.to(device), labels.to(device)
correct_s += test(src_model, data, labels)
err = 100. - 100. * correct_s / len(test_loader.dataset)
print('Test error of {}: {:.2f}'.format(basename(src_model_name), err))
for (name, target_model) in zip(target_model_names, target_models):
correct_t = 0
with torch.no_grad():
for (data, labels) in test_loader:
data, labels = data.to(device), labels.to(device)
correct_t += test(target_model, data, labels)
err = 100. - 100. * correct_t / len(test_loader.dataset)
print('Test error of {}: {:.2f}'.format(
basename(target_model_names), err))
return
eps = args.eps
correct = 0
for (data, labels) in test_loader:
# take the random step in the RAND+FGSM
if attack == 'rand_fgs':
data = torch.clamp(
data +
torch.zeros_like(data).uniform_(-args.alpha, args.alpha), 0.0,
1.0)
eps -= args.alpha
data, labels = data.to(device), labels.to(device)
grad = gen_grad(data, src_model, labels)
# FGSM and RAND+FGSM one-shot attack
if attack in ['fgs', 'rand_fgs']:
adv_x = symbolic_fgs(data, grad, eps=eps)
# iterative FGSM
if attack == 'ifgs':
adv_x = iter_fgs(src_model,
data,
labels,
steps=args.steps,
eps=args.eps / args.steps)
correct += test(src_model, adv_x, labels)
test_error = 100. - 100. * correct / len(test_loader.dataset)
print('Test Set Error Rate: {:.2f}%'.format(test_error))
def main(attack, src_model_name, target_model_names):
np.random.seed(0)
tf.set_random_seed(0)
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
K.set_session(tf.Session(config=config))
if args.dataset == "mnist":
K.set_image_data_format('channels_last')
set_mnist_flags()
x = K.placeholder(
(None, FLAGS.IMAGE_ROWS, FLAGS.IMAGE_COLS, FLAGS.NUM_CHANNELS))
y = K.placeholder((None, FLAGS.NUM_CLASSES))
_, _, X_test, Y_test = data_mnist()
# source model for crafting adversarial examples
src_model = load_model_mnist(src_model_name)
sd = 0.7
elif args.dataset == "cifar10":
set_flags(20)
K.set_image_data_format('channels_first')
x = K.placeholder(
(None, FLAGS.NUM_CHANNELS, FLAGS.IMAGE_ROWS, FLAGS.IMAGE_COLS))
y = K.placeholder((None, FLAGS.NUM_CLASSES))
_, _, X_test, Y_test = load_data()
# source model for crafting adversarial examples
src_model = load_model(src_model_name)
sd = 100. / 255.
# model(s) to target
target_models = [None] * len(target_model_names)
for i in range(len(target_model_names)):
target_models[i] = load_model(target_model_names[i])
# simply compute test error
if attack == "test":
acc = tf_test_acc(src_model, x, X_test, Y_test)
print('{}: {:.1f}'.format(basename(src_model_name), acc))
for (name, target_model) in zip(target_model_names, target_models):
acc = tf_test_acc(target_model, x, X_test, Y_test)
print('{}: {:.1f}'.format(basename(name), acc))
return
eps = args.eps
# take the random step in the RAND+FGSM
if attack == "rfgs":
X_test = np.clip(
X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)), 0.0,
1.0)
eps -= args.alpha
logits = src_model(x)
grad = gen_grad(x, logits, y)
# FGSM and RAND+FGSM one-shot attack
if attack in ["fgs", "rfgs"]:
adv_x = symbolic_fgs(x, grad, eps=eps)
# iterative FGSM
if attack == "pgd":
adv_x = iter_fgs(src_model,
x,
y,
steps=args.steps,
eps=eps,
alpha=eps / 10.0)
if attack == 'so':
adv_x = so(src_model,
x,
y,
steps=args.steps,
eps=eps,
alpha=eps / 10.0,
norm=args.norm,
sd=sd)
print('start')
# compute the adversarial examples and evaluate
X_adv = batch_eval([x, y], [adv_x], [X_test, Y_test])[0]
# pdb.set_trace()
print('-----done----')
# white-box attack
acc = tf_test_acc(src_model, x, X_adv, Y_test, sd=sd, num_iter=10)
with open('attacks.txt', 'a') as log:
log.write('{}->{}: {:.1f}, size = {:.4f}\n'.format(
basename(src_model_name), basename(src_model_name), acc, eps))
# black-box attack
for (name, target_model) in zip(target_model_names, target_models):
acc = tf_test_acc(target_model, x, X_adv, Y_test, sd=sd, num_iter=10)
with open('attacks.txt', 'a') as log:
log.write('{}->{}: {:.1f}, size = {:.4f}\n'.format(
basename(src_model_name), basename(name), acc, eps))
def main(attack, src_model_name, target_model_names):
np.random.seed(0)
tf.set_random_seed(0)
set_flags(20)
config = tf.ConfigProto()
config.gpu_options.allow_growth = True
K.set_session(tf.Session(config=config))
x = K.placeholder(
(None, FLAGS.NUM_CHANNELS, FLAGS.IMAGE_ROWS, FLAGS.IMAGE_COLS))
y = K.placeholder((None, FLAGS.NUM_CLASSES))
_, _, X_test, Y_test = load_data()
# source model for crafting adversarial examples
src_model = load_model(src_model_name)
# model(s) to target
target_models = [None] * len(target_model_names)
for i in range(len(target_model_names)):
target_models[i] = load_model(target_model_names[i])
# simply compute test error
if attack == "test":
err = tf_test_error_rate(src_model, x, X_test, Y_test)
print('{}: {:.1f}'.format(basename(src_model_name), 100 - err))
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_test, Y_test)
print('{}: {:.1f}'.format(basename(name), 100 - err))
return
eps = args.eps
# take the random step in the RAND+FGSM
if attack == "rfgs":
X_test = np.clip(
X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)), 0.0,
1.0)
eps -= args.alpha
logits = src_model(x)
grad = gen_grad(x, logits, y)
# FGSM and RAND+FGSM one-shot attack
if attack in ["fgs", "rfgs"]:
adv_x = symbolic_fgs(x, grad, eps=eps)
# iterative FGSM
if attack == "pgd":
adv_x = iter_fgs(src_model,
x,
y,
steps=args.steps,
eps=args.eps,
alpha=args.eps / 10.0)
if attack == 'mim':
adv_x = momentum_fgs(src_model, x, y, eps=args.eps)
print('start')
# compute the adversarial examples and evaluate
X_adv = batch_eval([x, y], [adv_x], [X_test, Y_test])[0]
print('-----done----')
# white-box attack
err = tf_test_error_rate(src_model, x, X_adv, Y_test)
print('{}->{}: {:.1f}'.format(basename(src_model_name),
basename(src_model_name), 100 - err))
# black-box attack
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_adv, Y_test)
print('{}->{}: {:.1f}'.format(basename(src_model_name), basename(name),
100 - err))
def main(attack, src_model_names, target_model_name):
np.random.seed(0)
tf.set_random_seed(0)
flags.DEFINE_integer('BATCH_SIZE', 1, 'Size of batches')
set_mnist_flags()
dim = FLAGS.IMAGE_ROWS * FLAGS.IMAGE_COLS * FLAGS.NUM_CHANNELS
x = K.placeholder(
(None, FLAGS.IMAGE_ROWS, FLAGS.IMAGE_COLS, FLAGS.NUM_CHANNELS))
y = K.placeholder((None, FLAGS.NUM_CLASSES))
_, _, X_test, Y_test = data_mnist()
Y_test_uncat = np.argmax(Y_test, axis=1)
# source model for crafting adversarial examples
src_models = [None] * len(src_model_names)
for i in range(len(src_model_names)):
src_models[i] = load_model(src_model_names[i])
src_model_name_joint = ''
for i in range(len(src_models)):
src_model_name_joint += basename(src_model_names[i])
# model(s) to target
if target_model_name is not None:
target_model = load_model(target_model_name)
# simply compute test error
if attack == "test":
for (name, src_model) in zip(src_model_names, src_models):
_, _, err = tf_test_error_rate(src_model, x, X_test, Y_test)
print '{}: {:.1f}'.format(basename(name), err)
if target_model_name is not None:
_, _, err = tf_test_error_rate(target_model, x, X_test, Y_test)
print '{}: {:.1f}'.format(basename(target_model_name), err)
return
if args.targeted_flag == 1:
pickle_name = attack + '_' + src_model_name_joint + '_' + '_' + args.loss_type + '_targets.p'
if os.path.exists(pickle_name):
targets = pickle.load(open(pickle_name, 'rb'))
else:
targets = []
allowed_targets = list(range(FLAGS.NUM_CLASSES))
for i in range(len(Y_test)):
allowed_targets.remove(Y_test_uncat[i])
targets.append(np.random.choice(allowed_targets))
allowed_targets = list(range(FLAGS.NUM_CLASSES))
# targets = np.random.randint(10, size = BATCH_SIZE*BATCH_EVAL_NUM)
targets = np.array(targets)
print targets
targets_cat = np_utils.to_categorical(
targets, FLAGS.NUM_CLASSES).astype(np.float32)
Y_test = targets_cat
if SAVE_FLAG == True:
pickle.dump(Y_test, open(pickle_name, 'wb'))
# take the random step in the RAND+FGSM
if attack == "rand_fgs":
X_test = np.clip(
X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)), 0.0,
1.0)
eps -= args.alpha
logits = [None] * len(src_model_names)
for i in range(len(src_model_names)):
curr_model = src_models[i]
logits[i] = curr_model(x)
if args.loss_type == 'xent':
loss, grad = gen_grad_ens(x, logits, y)
elif args.loss_type == 'cw':
grad = gen_grad_cw(x, logits, y)
if args.targeted_flag == 1:
grad = -1.0 * grad
for eps in eps_list:
# FGSM and RAND+FGSM one-shot attack
if attack in ["fgs", "rand_fgs"] and args.norm == 'linf':
adv_x = symbolic_fgs(x, grad, eps=eps)
elif attack in ["fgs", "rand_fgs"] and args.norm == 'l2':
adv_x = symbolic_fg(x, grad, eps=eps)
# iterative FGSM
if attack == "ifgs":
l = 1000
X_test = X_test[0:l]
Y_test = Y_test[0:l]
adv_x = x
# iteratively apply the FGSM with small step size
for i in range(args.num_iter):
adv_logits = [None] * len(src_model_names)
for i in range(len(src_model_names)):
curr_model = src_models[i]
adv_logits[i] = curr_model(adv_x)
if args.loss_type == 'xent':
loss, grad = gen_grad_ens(adv_x, adv_logits, y)
elif args.loss_type == 'cw':
grad = gen_grad_cw(adv_x, adv_logits, y)
if args.targeted_flag == 1:
grad = -1.0 * grad
adv_x = symbolic_fgs(adv_x, grad, args.delta, True)
r = adv_x - x
r = K.clip(r, -eps, eps)
adv_x = x + r
adv_x = K.clip(adv_x, 0, 1)
if attack == "CW_ens":
l = 1000
pickle_name = attack + '_' + src_model_name_joint + '_' + str(
args.eps) + '_adv.p'
print(pickle_name)
Y_test = Y_test[0:l]
if os.path.exists(pickle_name) and attack == "CW_ens":
print 'Loading adversarial samples'
X_adv = pickle.load(open(pickle_name, 'rb'))
for (name, src_model) in zip(src_model_names, src_models):
preds_adv, _, err = tf_test_error_rate(
src_model, x, X_adv, Y_test)
print '{}->{}: {:.1f}'.format(src_model_name_joint,
basename(name), err)
preds_adv, _, err = tf_test_error_rate(target_model, x, X_adv,
Y_test)
print '{}->{}: {:.1f}'.format(src_model_name_joint,
basename(target_model_name), err)
return
X_test = X_test[0:l]
time1 = time()
cli = CarliniLiEns(K.get_session(),
src_models,
targeted=False,
confidence=args.kappa,
eps=eps)
X_adv = cli.attack(X_test, Y_test)
r = np.clip(X_adv - X_test, -eps, eps)
X_adv = X_test + r
time2 = time()
print("Run with Adam took {}s".format(time2 - time1))
if SAVE_FLAG == True:
pickle.dump(X_adv, open(pickle_name, 'wb'))
for (name, src_model) in zip(src_model_names, src_models):
print('Carrying out white-box attack')
pres, _, err = tf_test_error_rate(src_model, x, X_adv, Y_test)
print '{}->{}: {:.1f}'.format(src_model_name_joint,
basename(name), err)
if target_model_name is not None:
print('Carrying out black-box attack')
preds, orig, err = tf_test_error_rate(target_model, x, X_adv,
Y_test)
print '{}->{}: {:.1f}'.format(src_model_name_joint,
basename(target_model_name), err)
return
pickle_name = attack + '_' + src_model_name_joint + '_' + args.loss_type + '_' + str(
eps) + '_adv.p'
if args.targeted_flag == 1:
pickle_name = attack + '_' + src_model_name_joint + '_' + args.loss_type + '_' + str(
eps) + '_adv_t.p'
if os.path.exists(pickle_name):
print 'Loading adversarial samples'
X_adv = pickle.load(open(pickle_name, 'rb'))
else:
print 'Generating adversarial samples'
X_adv = batch_eval([x, y], [adv_x], [X_test, Y_test])[0]
if SAVE_FLAG == True:
pickle.dump(X_adv, open(pickle_name, 'wb'))
avg_l2_perturb = np.mean(
np.linalg.norm((X_adv - X_test).reshape(len(X_test), dim), axis=1))
# white-box attack
l = len(X_adv)
print('Carrying out white-box attack')
for (name, src_model) in zip(src_model_names, src_models):
preds_adv, orig, err = tf_test_error_rate(src_model, x, X_adv,
Y_test[0:l])
if args.targeted_flag == 1:
err = 100.0 - err
print '{}->{}: {:.1f}'.format(basename(name), basename(name), err)
# black-box attack
if target_model_name is not None:
print('Carrying out black-box attack')
preds, _, err = tf_test_error_rate(target_model, x, X_adv, Y_test)
if args.targeted_flag == 1:
err = 100.0 - err
print '{}->{}: {:.1f}, {}, {} {}'.format(
src_model_name_joint, basename(target_model_name), err,
avg_l2_perturb, eps, attack)
def main(attack, src_model_name, target_model_names, data_train_dir,
data_test_dir):
np.random.seed(0)
tf.set_random_seed(0)
set_gtsrb_flags()
# Get GTSRB test data
_, _, _, _, X_test, Y_test = load_data(data_train_dir, data_test_dir)
# display_leg_sample(X_test)
# One-hot encode image labels
label_binarizer = LabelBinarizer()
Y_test = label_binarizer.fit_transform(Y_test)
x = K.placeholder(
(None, FLAGS.IMAGE_ROWS, FLAGS.IMAGE_COLS, FLAGS.NUM_CHANNELS))
y = K.placeholder((None, FLAGS.NUM_CLASSES))
# one_hot_y = tf.one_hot(y, 43)
# source model for crafting adversarial examples
src_model = load_model(src_model_name)
# model(s) to target
target_models = [None] * len(target_model_names)
for i in range(len(target_model_names)):
target_models[i] = load_model(target_model_names[i])
# simply compute test error
if attack == "test":
err = tf_test_error_rate(src_model, x, X_test, Y_test)
print '{}: {:.3f}'.format(basename(src_model_name), err)
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_test, Y_test)
print '{}: {:.3f}'.format(basename(name), err)
return
eps = args.eps
# take the random step in the RAND+FGSM
if attack == "rand_fgs":
X_test = np.clip(
X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)), 0.0,
1.0)
eps -= args.alpha
logits = src_model(x)
grad = gen_grad(x, logits, y)
# FGSM and RAND+FGSM one-shot attack
if attack in ["fgs", "rand_fgs"]:
adv_x = symbolic_fgs(x, grad, eps=eps)
# iterative FGSM
if attack == "ifgs":
adv_x = iter_fgs(src_model,
x,
y,
steps=args.steps,
eps=args.eps / args.steps)
# Carlini & Wagner attack
if attack == "CW":
X_test = X_test[0:200]
Y_test = Y_test[0:200]
cli = CarliniLi(K.get_session(),
src_model,
targeted=False,
confidence=args.kappa,
eps=args.eps)
X_adv = cli.attack(X_test, Y_test)
r = np.clip(X_adv - X_test, -args.eps, args.eps)
X_adv = X_test + r
np.save('Train_Carlini_200.npy', X_adv)
np.save('Label_Carlini_200.npy', Y_test)
err = tf_test_error_rate(src_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name),
basename(src_model_name), err)
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name),
basename(name), err)
display_leg_adv_sample(X_test, X_adv)
return
if attack == "cascade_ensemble":
# X_test = np.clip(
# X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)),
# 0.0, 1.0)
# eps -= args.alpha
sub_model_ens = (sub_model_2, sub_model_3)
sub_models = [None] * len(sub_model_ens)
for i in range(len(sub_model_ens)):
sub_models[i] = load_model(sub_model_ens[i])
adv_x = x
for j in range(args.steps):
for i, m in enumerate(sub_models + [src_model]):
logits = m(adv_x)
gradient = gen_grad(adv_x, logits, y)
adv_x = symbolic_fgs(adv_x,
gradient,
eps=args.eps / args.steps,
clipping=True)
if attack == "Iter_Casc":
# X_test = np.clip(
# X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)),
# 0.0, 1.0)
# args.eps = args.eps - args.alpha
sub_model_ens = (sub_model_1, sub_model_2, sub_model_3)
sub_models = [None] * len(sub_model_ens)
for i in range(len(sub_model_ens)):
sub_models[i] = load_model(sub_model_ens[i])
x_advs = [None] * len(sub_models)
errs = [None] * len(sub_models)
adv_x = x
eps_all = []
for i in range(args.steps):
if i == 0:
eps_all[0] = (1.0 / len(sub_models)) * args.eps
else:
for j in range(i):
pre_sum = 0.0
pre_sum += eps_all[j]
eps_all[i] = (args.eps - pre_sum) * (1.0 / len(sub_models))
# for i in range(args.steps):
# if i == 0:
# eps_0 = (1.0 / len(sub_models)) * args.eps
# eps_all.append(eps_0)
# elif i == 1:
# eps_1 = (1 - 1.0 / len(sub_models)) * (1.0 / len(sub_models)) * args.eps
# eps_all.append(eps_1)
# elif i == 2:
# eps_2 = (1 - (1 - 1.0 / len(sub_models)) * (1.0 / len(sub_models))) * (1.0 / len(sub_models)) * args.eps
# eps_all.append(eps_2)
# elif i == 3:
# eps_3 = (1 - (1 - (1 - 1.0 / len(sub_models)) * (1.0 / len(sub_models))) * (1.0 / len(sub_models))) * (
# 1.0 / len(sub_models)) * args.eps
# eps_all.append(eps_3)
# elif i == 4:
# eps_4 = (1 - (
# 1 - (1 - (1 - 1.0 / len(sub_models)) * (1.0 / len(sub_models))) * (1.0 / len(sub_models))) * (
# 1.0 / len(sub_models))) * (1.0 / len(sub_models)) * args.eps
# eps_all.append(eps_4)
# elif i == 5:
# eps_5 = (1 - (1 - (
# 1 - (1 - (1 - 1.0 / len(sub_models)) * (1.0 / len(sub_models))) * (1.0 / len(sub_models))) * (
# 1.0 / len(sub_models)))) * (1.0 / len(sub_models)) * args.eps
# eps_all.append(eps_5)
# elif i == 6:
# eps_6 = (1 - (1 - (1 - (
# 1 - (1 - (1 - 1.0 / len(sub_models)) * (1.0 / len(sub_models))) * (1.0 / len(sub_models))) * (
# 1.0 / len(sub_models))))) * (1.0 / len(sub_models)) * args.eps
# eps_all.append(eps_6)
#
# elif i == 7:
# eps_7 = (1 - (1 - (1 - (1 - (
# 1 - (1 - (1 - 1.0 / len(sub_models)) * (1.0 / len(sub_models))) * (1.0 / len(sub_models))) * (
# 1.0 / len(sub_models)))))) * (1.0 / len(sub_models)) * args.eps
# eps_all.append(eps_7)
# elif i == 8:
# eps_8 = (1 - (1 - (1 - (1 - (1 - (
# 1 - (1 - (1 - 1.0 / len(sub_models)) * (1.0 / len(sub_models))) * (1.0 / len(sub_models))) * (
# 1.0 / len(sub_models))))))) * (1.0 / len(sub_models)) * args.eps
# eps_all.append(eps_8)
# elif i == 9:
# eps_9 = (1 - (1 - (1 - (1 - (1 - (1 - (
# 1 - (1 - (1 - 1.0 / len(sub_models)) * (1.0 / len(sub_models))) * (1.0 / len(sub_models))) * (
# 1.0 / len(sub_models)))))))) * (
# 1.0 / len(sub_models)) * args.eps
# eps_all.append(eps_9)
# elif i == 10:
# eps_10 = (1 - (1 - (1 - (1 - (1 - (1 - (1 - (
# 1 - (1 - (1 - 1.0 / len(sub_models)) * (1.0 / len(sub_models))) * (1.0 / len(sub_models))) * (
# 1.0 / len(sub_models))))))))) * (
# 1.0 / len(sub_models)) * args.eps
# eps_all.append(eps_10)
# elif i == 11:
# eps_11 = (1 - (1 - (1 - (1 - (1 - (1 - (1 - (1 - (
# 1 - (1 - (1 - 1.0 / len(sub_models)) * (1.0 / len(sub_models))) * (1.0 / len(sub_models))) * (
# 1.0 / len(sub_models)))))))))) * (
# 1.0 / len(sub_models)) * args.eps
# eps_all.append(eps_11)
for j in range(args.steps):
print('iterative step is :', j)
if j == 0:
for i, m in enumerate(sub_models):
logits = m(adv_x)
gradient = gen_grad(adv_x, logits, y)
adv_x_ = symbolic_fgs(adv_x,
gradient,
eps=eps_all[j],
clipping=True)
x_advs[i] = adv_x_
X_adv = batch_eval([x, y], [adv_x_], [X_test, Y_test])[0]
err = tf_test_error_rate(m, x, X_adv, Y_test)
errs[i] = err
adv_x = x_advs[errs.index(min(errs))]
else:
t = errs.index(min(errs))
print('index of min value of errs:', t)
logits = sub_models[t](adv_x)
gradient = gen_grad(adv_x, logits, y)
adv_x = symbolic_fgs(adv_x,
gradient,
eps=eps_all[j],
clipping=True)
for i, m in enumerate(sub_models):
X_adv = batch_eval([x, y], [adv_x], [X_test, Y_test])[0]
err = tf_test_error_rate(m, x, X_adv, Y_test)
errs[i] = err
print('error rate of each substitute models_oldest: ', errs)
print('\t')
if min(errs) >= 99:
success_rate = sum(errs) / len(sub_models)
print('success rate is: {:.3f}'.format(success_rate))
break
success_rate = sum(errs) / len(sub_models)
print('success rate is: {:.3f}'.format(success_rate))
X_adv = batch_eval([x, y], [adv_x], [X_test, Y_test])[0]
np.save('results/iter_casc_0.2_leg_adv/X_adv_Iter_Casc_0.2.npy', X_adv)
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name),
basename(name), err)
save_leg_adv_sample('results/iter_casc_0.2_leg_adv/', X_test, X_adv)
# save adversarial example specified by user
save_leg_adv_specified_by_user(
'results/iter_casc_0.2_leg_adv_label_4/', X_test, X_adv, Y_test)
return
if attack == "stack_paral":
# X_test = np.clip(
# X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)),
# 0.0, 1.0)
# eps -= args.alpha
sub_model_ens = (sub_model_1, sub_model_2, sub_model_3)
sub_models = [None] * len(sub_model_ens)
for i in range(len(sub_model_ens)):
sub_models[i] = load_model(sub_model_ens[i])
errs = [None] * (len(sub_models) + 1)
x_advs = [None] * len(sub_models)
# print x_advs
for i, m in enumerate(sub_models):
# x = x + args.alpha * np.sign(np.random.randn(*x[0].shape))
logits = m(x)
gradient = gen_grad(x, logits, y)
adv_x = symbolic_fgs(x, gradient, eps=args.eps / 2, clipping=True)
x_advs[i] = adv_x
# print x_advs
adv_x_sum = x_advs[0]
for i in range(len(sub_models)):
if i == 0: continue
adv_x_sum = adv_x_sum + x_advs[i]
adv_x_mean = adv_x_sum / (len(sub_models))
preds = src_model(adv_x_mean)
grads = gen_grad(adv_x_mean, preds, y)
adv_x = symbolic_fgs(adv_x_mean, grads, eps=args.eps, clipping=True)
# compute the adversarial examples and evaluate
for i, m in enumerate(sub_models + [src_model]):
X_adv = batch_eval([x, y], [adv_x], [X_test, Y_test])[0]
err = tf_test_error_rate(m, x, X_adv, Y_test)
errs[i] = err
# compute success rate
success_rate = sum(errs) / (len(sub_models) + 1)
print('success rate is: {:.3f}'.format(success_rate))
# compute transfer rate
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name),
basename(name), err)
# save adversarial examples
np.save('results/stack_paral_0.2_leg_adv/X_adv_stack_paral_0.2.npy',
X_adv)
# save_leg_adv_sample(X_test, X_adv)
save_leg_adv_sample('results/stack_paral_0.2_leg_adv/', X_test, X_adv)
# save adversarial example specified by user
save_leg_adv_specified_by_user(
'results/stack_paral_0.2_leg_adv_label_4/', X_test, X_adv, Y_test)
return
if attack == "cascade_ensemble_2":
X_test = np.clip(
X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)), 0.0,
1.0)
eps -= args.alpha
sub_model_ens = (sub_model_1, sub_model_2)
sub_models = [None] * len(sub_model_ens)
for i in range(len(sub_model_ens)):
sub_models[i] = load_model(sub_model_ens[i])
x_advs = [([None] * len(sub_models)) for i in range(args.steps)]
# print x_advs
x_adv = x
for j in range(args.steps):
for i, m in enumerate(sub_models):
logits = m(x_adv)
gradient = gen_grad(x_adv, logits, y)
x_adv = symbolic_fgs(x_adv,
gradient,
eps=args.eps / args.steps,
clipping=True)
x_advs[j][i] = x_adv
# print x_advs
adv_x_sum = x_advs[0][0]
for j in range(args.steps):
for i in range(len(sub_models)):
if j == 0 and i == 0: continue
adv_x_sum = adv_x_sum + x_advs[j][i]
adv_x_mean = adv_x_sum / (args.steps * len(sub_models))
preds = src_model(adv_x_mean)
grads = gen_grad(adv_x_mean, preds, y)
adv_x = symbolic_fgs(adv_x_mean,
grads,
eps=args.eps / args.steps,
clipping=True)
# compute the adversarial examples and evaluate
X_adv = batch_eval([x, y], [adv_x], [X_test, Y_test])[0]
# white-box attack
err = tf_test_error_rate(src_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name),
basename(src_model_name), err)
# black-box attack
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name), basename(name),
err)
def main(args):
def get_model_type(model_name):
model_type = {
'models/modelA': 0,
'models/modelA_adv': 0,
'models/modelA_ens': 0,
'models/modelB': 1,
'models/modelB_adv': 1,
'models/modelB_ens': 1,
'models/modelC': 2,
'models/modelC_adv': 2,
'models/modelC_ens': 2,
'models/modelD': 3,
'models/modelD_adv': 3,
'models/modelD_ens': 3,
}
if model_name not in model_type.keys():
raise ValueError('Unknown model: {}'.format(model_name))
return model_type[model_name]
torch.manual_seed(args.seed)
device = torch.device('cuda' if args.cuda else 'cpu')
'''
Preprocess MNIST dataset
'''
kwargs = {'num_workers': 20, 'pin_memory': True} if args.cuda else {}
train_loader = torch.utils.data.DataLoader(datasets.MNIST(
'../attack_mnist',
train=True,
download=True,
transform=transforms.ToTensor()),
batch_size=args.batch_size,
shuffle=True,
**kwargs)
test_loader = torch.utils.data.DataLoader(datasets.MNIST(
'../attack_mnist', train=False, transform=transforms.ToTensor()),
batch_size=args.batch_size,
shuffle=True,
**kwargs)
eps = args.eps
# if src_models is not None, we train on adversarial examples that come
# from multiple models
adv_model_names = args.adv_models
adv_models = [None] * len(adv_model_names)
for i in range(len(adv_model_names)):
type = get_model_type(adv_model_names[i])
adv_models[i] = load_model(adv_model_names[i], type=type).to(device)
model = model_mnist(type=args.type).to(device)
optimizer = optim.Adam(model.parameters())
# Train on MNIST model
x_advs = [None] * (len(adv_models) + 1)
for epoch in range(args.epochs):
for batch_idx, (data, labels) in enumerate(train_loader):
data, labels = data.to(device), labels.to(device)
for i, m in enumerate(adv_models + [model]):
grad = gen_grad(data, m, labels, loss='training')
x_advs[i] = symbolic_fgs(data, grad, eps=eps)
train(epoch,
batch_idx,
model,
data,
labels,
optimizer,
x_advs=x_advs)
# Finally print the result
correct = 0
with torch.no_grad():
for (data, labels) in test_loader:
data, labels = data.to(device), labels.to(device)
correct += test(model, data, labels)
test_error = 100. - 100. * correct / len(test_loader.dataset)
print('Test Set Error Rate: {:.2f}%'.format(test_error))
torch.save(model.state_dict(), args.model + '.pkl')
def main(attack, src_model_name, target_model_names):
np.random.seed(0)
tf.set_random_seed(0)
flags.DEFINE_integer('BATCH_SIZE', 32, 'Size of batches')
set_mnist_flags()
x = K.placeholder(
(None, FLAGS.IMAGE_ROWS, FLAGS.IMAGE_COLS, FLAGS.NUM_CHANNELS))
y = K.placeholder((None, FLAGS.NUM_CLASSES))
_, _, X_test, Y_test = data_mnist()
# source model for crafting adversarial examples
src_model = load_model(src_model_name)
# model(s) to target
target_models = [None] * len(target_model_names)
for i in range(len(target_model_names)):
target_models[i] = load_model(target_model_names[i])
# simply compute test error
if attack == "test":
err = tf_test_error_rate(src_model, x, X_test, Y_test)
print '{}: {:.3f}'.format(basename(src_model_name), err)
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_test, Y_test)
print '{}: {:.3f}'.format(basename(name), err)
return
eps = args.eps
# take the random step in the RAND+FGSM
if attack == "rand_fgs":
X_test = np.clip(
X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)), 0.0,
1.0)
eps -= args.alpha
logits = src_model(x)
grad = gen_grad(x, logits, y)
# FGSM and RAND+FGSM one-shot attack
if attack in ["fgs", "rand_fgs"]:
adv_x = symbolic_fgs(x, grad, eps=eps)
# iterative FGSM
if attack == "ifgs":
adv_x = iter_fgs(src_model,
x,
y,
steps=args.steps,
eps=args.eps / args.steps)
# Carlini & Wagner attack
if attack == "CW":
X_test = X_test[0:1000]
Y_test = Y_test[0:1000]
cli = CarliniLi(K.get_session(),
src_model,
targeted=False,
confidence=args.kappa,
eps=args.eps)
X_adv = cli.attack(X_test, Y_test)
r = np.clip(X_adv - X_test, -args.eps, args.eps)
X_adv = X_test + r
err = tf_test_error_rate(src_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name),
basename(src_model_name), err)
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name),
basename(name), err)
return
if attack == "cascade_ensemble":
X_test = np.clip(
X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)), 0.0,
1.0)
eps -= args.alpha
sub_model_ens = (sub_model_1, sub_model_2, sub_model_3, sub_model_4,
sub_model_5, sub_model_6, sub_model_7)
sub_models = [None] * len(sub_model_ens)
for i in range(len(sub_model_ens)):
sub_models[i] = load_model(sub_model_ens[i])
adv_x = x
for j in range(args.steps):
for i, m in enumerate(sub_models + [src_model]):
logits = m(adv_x)
gradient = gen_grad(adv_x, logits, y)
adv_x = symbolic_fgs(adv_x,
gradient,
eps=args.eps / args.steps,
clipping=True)
if attack == "parallel_ensemble":
X_test = np.clip(
X_test + args.alpha * np.sign(np.random.randn(*X_test.shape)), 0.0,
1.0)
eps -= args.alpha
sub_model_ens = (sub_model_1, sub_model_2, sub_model_3)
sub_models = [None] * len(sub_model_ens)
for i in range(len(sub_model_ens)):
sub_models[i] = load_model(sub_model_ens[i])
x_advs = [([None] * len(sub_models)) for i in range(args.steps)]
print x_advs
x_adv = x
for j in range(args.steps):
for i, m in enumerate(sub_models):
logits = m(x_adv)
gradient = gen_grad(x_adv, logits, y)
x_adv = symbolic_fgs(x_adv,
gradient,
eps=args.eps / args.steps,
clipping=True)
x_advs[j][i] = x_adv
print x_advs
adv_x_mean = x_advs[0][0]
for j in range(args.steps):
for i in range(len(sub_models)):
if j == 0 and i == 0: continue
adv_x_mean = adv_x_mean + x_advs[j][i]
xadv = adv_x_mean / (args.steps * len(sub_models))
preds = src_model(xadv)
grads = gen_grad(xadv, preds, y)
adv_x = symbolic_fgs(xadv, grads, eps=args.eps, clipping=True)
# compute the adversarial examples and evaluate
X_adv = batch_eval([x, y], [adv_x], [X_test, Y_test])[0]
# white-box attack
err = tf_test_error_rate(src_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name),
basename(src_model_name), err)
# black-box attack
for (name, target_model) in zip(target_model_names, target_models):
err = tf_test_error_rate(target_model, x, X_adv, Y_test)
print '{}->{}: {:.3f}'.format(basename(src_model_name), basename(name),
err)
