def main(server):
num_rows = 7000
num_features = 32
num_epoch = 5
batch_size = 200
num_batches = (num_rows // batch_size) * num_epoch
#who shall receive the output
model_owner = ModelOwner('alice')
data_schema0 = DataSchema([tf.float64] * 16, [0.0] * 16)
data_schema1 = DataSchema([tf.int64] + [tf.float64] * 16, [0] + [0.0] * 16)
data_owner_0 = DataOwner('alice',
'aliceTrainFile.csv',
data_schema0,
batch_size=batch_size)
data_owner_1 = DataOwner('bob',
'bobTrainFileWithLabel.csv',
data_schema1,
batch_size=batch_size)
tfe.set_protocol(
tfe.protocol.Pond(
tfe.get_config().get_player(data_owner_0.player_name),
tfe.get_config().get_player(data_owner_1.player_name)))
x_train_0 = tfe.define_private_input(data_owner_0.player_name,
data_owner_0.provide_data)
x_train_1 = tfe.define_private_input(data_owner_1.player_name,
data_owner_1.provide_data)
y_train = tfe.gather(x_train_1, 0, axis=1)
y_train = tfe.reshape(y_train, [batch_size, 1])
#Remove bob's first column (which is label)
x_train_1 = tfe.strided_slice(x_train_1, [0, 1],
[x_train_1.shape[0], x_train_1.shape[1]],
[1, 1])
x_train = tfe.concat([x_train_0, x_train_1], axis=1)
model = LogisticRegression(num_features)
reveal_weights_op = model_owner.receive_weights(model.weights)
with tfe.Session() as sess:
sess.run(tfe.global_variables_initializer(), tag='init')
start_time = time.time()
model.fit(sess, x_train, y_train, num_batches)
end_time = time.time()
# TODO(Morten)
# each evaluation results in nodes for a forward pass being added to the graph;
# maybe there's some way to avoid this, even if it means only if the shapes match
model.evaluate(sess, x_train, y_train, data_owner_0)
model.evaluate(sess, x_train, y_train, data_owner_1)
print(sess.run(reveal_weights_op, tag='reveal'),
((end_time - start_time) * 1000))
def test_add_private_private(self):
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
def provide_input():
# normal TensorFlow operations can be run locally
# as part of defining a private input, in this
# case on the machine of the input provider
return tf.ones(shape=(2, 2)) * 1.3
# define inputs
x = tfe.define_private_variable(tf.ones(shape=(2, 2)))
y = tfe.define_private_input('input-provider', provide_input)
# define computation
z = x + y
with tfe.Session() as sess:
# initialize variables
sess.run(tfe.global_variables_initializer())
# reveal result
result = sess.run(z.reveal())
# Should be [[2.3, 2.3], [2.3, 2.3]]
np.testing.assert_allclose(result,
np.array([[2.3, 2.3], [2.3, 2.3]]),
rtol=0.0,
atol=0.01)
print("test_add_private_private succeeds")
def test_iterate_private(self):
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
def provide_input():
return tf.reshape(tf.range(0, 8), [4, 2])
# define inputs
x = tfe.define_private_input('input-provider', provide_input)
write_op = x.write("x.tfrecord")
with tfe.Session() as sess:
# initialize variables
sess.run(tfe.global_variables_initializer())
# reveal result
sess.run(write_op)
x = tfe.read("x.tfrecord", batch_size=5, n_columns=2)
y = tfe.iterate(x, batch_size=3, repeat=True, shuffle=False)
z = tfe.iterate(x, batch_size=3, repeat=True, shuffle=True)
with tfe.Session() as sess:
sess.run(tfe.global_variables_initializer())
print(sess.run(x.reveal()))
print(sess.run(y.reveal()))
print(sess.run(y.reveal()))
print(sess.run(x.reveal()))
print(sess.run(z.reveal()))
def test_read_private(self):
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
def provide_input():
return tf.reshape(tf.range(0, 8), [4, 2])
# define inputs
x = tfe.define_private_input('input-provider', provide_input)
write_op = x.write("x.tfrecord")
with tfe.Session() as sess:
# initialize variables
sess.run(tfe.global_variables_initializer())
# reveal result
sess.run(write_op)
x = tfe.read("x.tfrecord", batch_size=5, n_columns=2)
with tfe.Session() as sess:
result = sess.run(x.reveal())
np.testing.assert_allclose(result,
np.array(list(range(0, 8)) +
[0, 1]).reshape([5, 2]),
rtol=0.0,
atol=0.01)
print("test_read_private succeeds")
def test_mul_trunc2_private_private(self):
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
def provide_input():
# normal TensorFlow operations can be run locally
# as part of defining a private input, in this
# case on the machine of the input provider
return tf.ones(shape=(2, 2)) * 1.3
# define inputs
x = tfe.define_private_variable(tf.ones(shape=(2, 2)) * 2)
y = tfe.define_private_input("input-provider", provide_input)
# define computation
z = tfe.mul_trunc2(x, y)
with tfe.Session() as sess:
# initialize variables
sess.run(tfe.global_variables_initializer())
# reveal result
result = sess.run(z.reveal(), tag="mul_trunc2")
np.testing.assert_allclose(
result, np.array([[2.6, 2.6], [2.6, 2.6]]), rtol=0.0, atol=0.01
)
def test_fifo(self):
shape = (10, 10)
with tfe.protocol.Pond():
q = tfe.queue.FIFOQueue(capacity=10, shape=shape,)
assert isinstance(q, tfe.protocol.pond.AdditiveFIFOQueue)
raw = np.full(shape, 5)
x = tfe.define_private_input("inputter", lambda: tf.convert_to_tensor(raw))
assert isinstance(x, tfe.protocol.pond.PondPrivateTensor)
enqueue_op = q.enqueue(x)
y = q.dequeue()
assert isinstance(y, tfe.protocol.pond.PondPrivateTensor)
assert y.backing_dtype == x.backing_dtype
assert y.shape == x.shape
with tfe.Session() as sess:
sess.run(enqueue_op)
res = sess.run(y.reveal())
np.testing.assert_array_equal(res, raw)
def test_fp_sqrt_private(self):
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
r = np.random.rand(16) * 100 # random in [0, 100)
# define inputs
x = tfe.define_private_input("input-provider", lambda: tf.constant(r))
# define computation
sqrt_x = prot.fp_sqrt(x).reveal()
sqrt_inv_x = prot.fp_sqrt_inv(x).reveal()
with tfe.Session() as sess:
# initialize variables
sess.run(tfe.global_variables_initializer())
# reveal result
sqrt_x, sqrt_inv_x = sess.run([sqrt_x, sqrt_inv_x], tag="fp_sqrt")
np.testing.assert_allclose(sqrt_x,
np.sqrt(r),
rtol=0.03,
atol=0.05)
np.testing.assert_allclose(sqrt_inv_x,
1. / np.sqrt(r),
rtol=0.03,
atol=0.05)
def _register_op(self, node, inputs_iterable, input_player, graph_def):
"""Register single ops."""
output = strip_tensor_info(node.name)
if node.op == "Placeholder":
try:
_, item = inputs_iterable.__next__()
except StopIteration:
raise InvalidArgumentError("Not enough placeholders supplied")
x = tfe.define_private_input(input_player, item)
self.outputs[output] = x
return
out = self.registry[node.op](self, node, node.input)
# if the operation returns a list or tuple with several ouputs,
# identify the outputs node name
if isinstance(out, (list, tuple)):
output_name = find_output_names(graph_def, node.name, len(out))
# If output_name is empty, it means this node
# is the last one in the graph
if not output_name:
self.outputs[output] = out
else:
for i, _ in enumerate(out):
self.outputs[output_name[i]] = out[i]
else:
self.outputs[output] = out
def test_read_private(self):
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
def provide_input():
return tf.reshape(tf.range(0, 8), [4, 2])
# define inputs
x = tfe.define_private_input("input-provider", provide_input)
_, tmp_filename = tempfile.mkstemp()
write_op = x.write(tmp_filename)
with tfe.Session() as sess:
# initialize variables
sess.run(tfe.global_variables_initializer())
# reveal result
sess.run(write_op)
x = tfe.read(tmp_filename, batch_size=5, n_columns=2)
with tfe.Session() as sess:
result = sess.run(x.reveal())
np.testing.assert_allclose(
result,
np.array(list(range(0, 8)) + [0, 1]).reshape([5, 2]),
rtol=0.0,
atol=0.01,
)
os.remove(tmp_filename)
def test_depthwise_conv2d_set_weights(self):
input_shape = (1, 10, 10, 3)
input_data = np.random.normal(size=input_shape)
with tf.Session():
model = tf.keras.models.Sequential()
model.add(tf.keras.layers.DepthwiseConv2D(kernel_size=(2, 2),
batch_input_shape=input_shape))
expected = model.predict(input_data)
k_weights = model.get_weights()
k_config = model.get_config()
with tfe.protocol.SecureNN():
x = tfe.define_private_input(
"inputter",
lambda: tf.convert_to_tensor(input_data))
tfe_model = tfe.keras.models.model_from_config(k_config)
tfe_model.set_weights(k_weights)
y = tfe_model(x)
with KE.get_session() as sess:
actual = sess.run(y.reveal())
np.testing.assert_allclose(actual, expected, rtol=1e-2, atol=1e-2)
KE.clear_session()
def test_weights_as_private_var(self):
input_shape = (1, 3)
input_data = np.random.normal(size=input_shape)
expected, k_weights, k_config = _model_predict_keras(
input_data, input_shape)
with tfe.protocol.SecureNN():
x = tfe.define_private_input(
"inputter", lambda: tf.convert_to_tensor(input_data))
tfe_model = tfe.keras.models.model_from_config(k_config)
weights_private_var = [
tfe.define_private_variable(w) for w in k_weights
]
with tfe.Session() as sess:
for w in weights_private_var:
sess.run(w.initializer)
tfe_model.set_weights(weights_private_var, sess)
y = tfe_model(x)
actual = sess.run(y.reveal())
np.testing.assert_allclose(actual,
expected,
rtol=1e-2,
atol=1e-3)
def test_iterate_private(self):
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
def provide_input():
return tf.reshape(tf.range(0, 8), [4, 2])
# define inputs
x = tfe.define_private_input("input-provider", provide_input)
_, tmp_filename = tempfile.mkstemp()
write_op = x.write(tmp_filename)
with tfe.Session() as sess:
# initialize variables
sess.run(tfe.global_variables_initializer())
# reveal result
sess.run(write_op)
x = tfe.read(tmp_filename, batch_size=5, n_columns=2)
y = tfe.iterate(x, batch_size=3, repeat=True, shuffle=False)
z = tfe.iterate(x, batch_size=3, repeat=True, shuffle=True)
with tfe.Session() as sess:
sess.run(tfe.global_variables_initializer())
# TODO: fix this test
print(sess.run(x.reveal()))
print(sess.run(y.reveal()))
print(sess.run(y.reveal()))
print(sess.run(x.reveal()))
print(sess.run(z.reveal()))
os.remove(tmp_filename)
def _matmul(converter, node: Any, inputs: List[str]) -> Any:
a = converter.outputs[inputs[0]]
b = converter.outputs[inputs[1]]
tensor = b.attr["value"].tensor
b_shape = [i.size for i in tensor.tensor_shape.dim]
transpose_a = node.attr["transpose_a"].b
transpose_b = node.attr["transpose_b"].b
layer = Dense(a.shape.as_list(),
b_shape[1],
transpose_input=transpose_a,
transpose_weight=transpose_b)
dtype = tensor.dtype
if dtype == tf.float32:
nums = array.array('f', tensor.tensor_content)
elif dtype == tf.float64:
nums = array.array('d', tensor.tensor_content)
else:
raise TypeError("Unsupported dtype for weights")
def inputter_fn():
return tf.constant(np.array(nums).reshape(b_shape))
w = tfe.define_private_input(converter.model_provider,
inputter_fn)
layer.initialize(initial_weights=w)
return layer.forward(a)
def test_write_private(self):
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
def provide_input():
# normal TensorFlow operations can be run locally
# as part of defining a private input, in this
# case on the machine of the input provider
return tf.ones(shape=(2, 2)) * 1.3
# define inputs
x = tfe.define_private_input("input-provider", provide_input)
_, tmp_filename = tempfile.mkstemp()
write_op = x.write(tmp_filename)
with tfe.Session() as sess:
# initialize variables
sess.run(tfe.global_variables_initializer())
# reveal result
sess.run(write_op)
os.remove(tmp_filename)
def test_error():
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
a = tf.random_uniform([6, 10000], -3, 3)
b = tf.random_uniform([10000, 1], -0.1, 0.1)
x = tfe.define_private_input("input-provider", lambda: a)
y = tfe.define_private_input("input-provider", lambda: b)
z = tfe.matmul(x, y)
w = tf.matmul(a, b)
with tfe.Session() as sess:
sess.run(tfe.global_variables_initializer())
for i in range(1000):
result1, result2 = sess.run([z.reveal(), w])
close(result1, result2, 0.1)
print("test_error succeeds")
def test_from_config(self):
input_shape = (1, 3)
input_data = np.random.normal(size=input_shape)
expected, k_weights, k_config = _model_predict_keras(
input_data, input_shape)
with tfe.protocol.SecureNN():
x = tfe.define_private_input(
"inputter", lambda: tf.convert_to_tensor(input_data))
tfe_model = Sequential.from_config(k_config)
tfe_model.set_weights(k_weights)
y = tfe_model(x)
with KE.get_session() as sess:
actual = sess.run(y.reveal())
np.testing.assert_allclose(actual, expected, rtol=1e-2, atol=1e-3)
KE.clear_session()
def test_conv_model(self):
num_classes = 10
input_shape = (1, 28, 28, 1)
input_data = np.random.normal(size=input_shape)
with tf.Session():
model = tf.keras.models.Sequential()
model.add(
tf.keras.layers.Conv2D(2, (3, 3),
batch_input_shape=input_shape))
model.add(tf.keras.layers.ReLU())
model.add(tf.keras.layers.BatchNormalization())
model.add(tf.keras.layers.AveragePooling2D((2, 2)))
model.add(tf.keras.layers.Conv2D(2, (3, 3)))
model.add(tf.keras.layers.ReLU())
model.add(tf.keras.layers.BatchNormalization())
model.add(tf.keras.layers.AveragePooling2D((2, 2)))
model.add(tf.keras.layers.Flatten())
model.add(tf.keras.layers.Dense(num_classes, name="logit"))
expected = model.predict(input_data)
k_weights = model.get_weights()
k_config = model.get_config()
with tfe.protocol.SecureNN():
x = tfe.define_private_input(
"inputter", lambda: tf.convert_to_tensor(input_data))
tfe_model = tfe.keras.models.model_from_config(k_config)
tfe_model.set_weights(k_weights)
y = tfe_model(x)
with KE.get_session() as sess:
actual = sess.run(y.reveal())
np.testing.assert_allclose(actual, expected, rtol=1e-2, atol=1e-2)
KE.clear_session()
def test_sub_private_private():
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
def provide_input():
return tf.ones(shape=(2, 2)) * 1.3
x = tfe.define_private_variable(tf.ones(shape=(2, 2)))
y = tfe.define_private_input('input-provider', provide_input)
z = x - y
with tfe.Session() as sess:
# initialize variables
sess.run(tfe.global_variables_initializer())
# reveal result
result = sess.run(z.reveal())
close(result, np.array([[-0.3, -0.3], [-0.3, -0.3]]))
print("test_sub_private_private succeeds")
def test_sub_private_private(self):
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
def provide_input():
return tf.ones(shape=(2, 2)) * 1.3
x = tfe.define_private_variable(tf.ones(shape=(2, 2)))
y = tfe.define_private_input("input-provider", provide_input)
z = x - y
with tfe.Session() as sess:
# initialize variables
sess.run(tfe.global_variables_initializer())
# reveal result
result = sess.run(z.reveal())
expected = np.array([[-0.3, -0.3], [-0.3, -0.3]])
np.testing.assert_allclose(result, expected, rtol=0.0, atol=0.01)
def _nodef_to_private_pond(converter, x):
"""Map a NodeDef x to a PrivatePondTensor."""
dtype = x.attr["dtype"].type
warn_msg = "Unexpected dtype {} found at node {}"
err_msg = "Unsupported dtype {} found at node {}"
x_shape = [i.size for i in x.attr["value"].tensor.tensor_shape.dim]
if not x_shape:
if dtype == tf.float32:
nums = x.attr["value"].tensor.float_val
elif dtype == tf.float64:
nums = x.attr["value"].tensor.float_val
elif dtype == tf.int32:
logging.warning(warn_msg, dtype, x.name)
nums = x.attr["value"].tensor.int_val
else:
raise TypeError(err_msg.format(dtype, x.name))
def inputter_fn():
return tf.constant(np.array(nums).reshape(1, 1))
else:
if dtype == tf.float32:
nums = array.array('f', x.attr["value"].tensor.tensor_content)
elif dtype == tf.float64:
nums = array.array('d', x.attr["value"].tensor.tensor_content)
elif dtype == tf.int32:
logging.warning(warn_msg, dtype, x.name)
nums = array.array('i', x.attr["value"].tensor.tensor_content)
else:
raise TypeError(err_msg.format(dtype, x.name))
def inputter_fn():
return tf.constant(np.array(nums).reshape(x_shape))
x_private = tfe.define_private_input(
converter.model_provider, inputter_fn)
return x_private
def test_clone_model(self):
input_shape = (1, 3)
input_data = np.random.normal(size=input_shape)
model = tf.keras.models.Sequential()
model.add(tf.keras.layers.Dense(2, batch_input_shape=input_shape))
model.add(tf.keras.layers.Dense(3))
expected = model.predict(input_data)
with tfe.protocol.SecureNN():
x = tfe.define_private_input(
"inputter", lambda: tf.convert_to_tensor(input_data))
tfe_model = tfe.keras.models.clone_model(model)
with KE.get_session() as sess:
y = tfe_model(x)
actual = sess.run(y.reveal())
np.testing.assert_allclose(actual, expected, rtol=1e-2, atol=1e-3)
KE.clear_session()
def test_write_private(self):
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
def provide_input():
# normal TensorFlow operations can be run locally
# as part of defining a private input, in this
# case on the machine of the input provider
return tf.ones(shape=(2, 2)) * 1.3
# define inputs
x = tfe.define_private_input('input-provider', provide_input)
write_op = x.write("x.tfrecord")
with tfe.Session() as sess:
# initialize variables
sess.run(tfe.global_variables_initializer())
# reveal result
sess.run(write_op)
print("test_write_private succeeds")
def test_add_private_private(self):
tf.reset_default_graph()
prot = ABY3()
tfe.set_protocol(prot)
def provide_input():
return tf.ones(shape=(2, 2)) * 1.3
# define inputs
x = tfe.define_private_variable(tf.ones(shape=(2, 2)))
y = tfe.define_private_input('input-provider', provide_input)
# define computation
z = x + y
with tfe.Session() as sess:
# initialize variables
sess.run(tfe.global_variables_initializer())
# reveal result
result = sess.run(z.reveal())
# Should be [[2.3, 2.3], [2.3, 2.3]]
expected = np.array([[2.3, 2.3], [2.3, 2.3]])
np.testing.assert_allclose(result, expected, rtol=0.0, atol=0.01)
training_set_size = 2000
test_set_size = 100
batch_size = 100
num_batches = (training_set_size // batch_size) * 10
model_owner = ModelOwner('model-owner')
data_owner_0 = DataOwner('data-owner-0', num_features, training_set_size,
test_set_size, batch_size // 2)
data_owner_1 = DataOwner('data-owner-1', num_features, training_set_size,
test_set_size, batch_size // 2)
tfe.set_protocol(
tfe.protocol.Pond(tfe.get_config().get_player(data_owner_0.player_name),
tfe.get_config().get_player(data_owner_1.player_name)))
x_train_0, y_train_0 = tfe.define_private_input(
data_owner_0.player_name, data_owner_0.provide_training_data)
x_train_1, y_train_1 = tfe.define_private_input(
data_owner_1.player_name, data_owner_1.provide_training_data)
x_test_0, y_test_0 = tfe.define_private_input(
data_owner_0.player_name, data_owner_0.provide_testing_data)
x_test_1, y_test_1 = tfe.define_private_input(
data_owner_1.player_name, data_owner_1.provide_testing_data)
x_train = tfe.concat([x_train_0, x_train_1], axis=0)
y_train = tfe.concat([y_train_0, y_train_1], axis=0)
model = LogisticRegression(num_features)
reveal_weights_op = tfe.define_output(model_owner.player_name, model.weights,
model_owner.receive_weights)
"""Private prediction with a single clients"""
import tf_encrypted as tfe
from common import LogisticRegression, PredictionClient
num_features = 10
model = LogisticRegression(num_features)
prediction_client = PredictionClient('prediction-client', num_features)
x = tfe.define_private_input(prediction_client.player_name,
prediction_client.provide_input)
y = model.forward(x)
reveal_output = tfe.define_output(prediction_client.player_name, y,
prediction_client.receive_output)
with tfe.Session() as sess:
sess.run(tfe.global_variables_initializer(), tag='init')
sess.run(reveal_output, tag='predict')
import numpy as np
import random as ran
def provide_data(features):
dataset = tf.data.Dataset.from_tensor_slices(features)
dataset = dataset.repeat()
dataset = dataset.batch(10)
iterator = dataset.make_one_shot_iterator()
batch = iterator.get_next()
batch = tf.reshape(batch, [10, 784])
return batch
remote_config = tfe.RemoteConfig.load("config.json")
tfe.set_config(remote_config)
tfe.set_protocol(tfe.protocol.Pond())
players = remote_config.players
server0 = remote_config.server(players[0].name)
tfe.set_protocol(
tfe.protocol.Pond(tfe.get_config().get_player("alice"),
tfe.get_config().get_player("bob")))
mnist = input_data.read_data_sets('MNIST_data', one_hot=True)
train_data = mnist.train.images[:100, :]
train_labels = mnist.train.labels[:100]
x_train_0 = tfe.define_private_input("alice", lambda: provide_data(train_data))
return op
if __name__ == "__main__":
start = time.time()
model_owner = ModelOwner(player_name="model-owner",
local_data_file="./data/train_half.tfrecord")
prediction_client = PredictionClient(
player_name="prediction-client",
local_data_file="./data/test.tfrecord")
# get model parameters as private tensors from model owner
params = tfe.define_private_input(model_owner.player_name,
model_owner.provide_input,
masked=True) # pylint: disable=E0632
# we'll use the same parameters for each prediction so we cache them to
# avoid re-training each time
cache_updater, params = tfe.cache(params)
# get prediction input from client
x = tfe.define_private_input(prediction_client.player_name,
prediction_client.provide_input,
masked=True) # pylint: disable=E0632
# compute prediction
w0, b0, w1, b1 = params
layer0 = tfe.matmul(x, w0) + b0
layer1 = tfe.sigmoid(layer0 *
def receive_output(self, likelihoods: tf.Tensor, y_true: tf.Tensor) -> tf.Tensor:
with tf.name_scope('post-processing'):
prediction = tf.argmax(likelihoods, axis=1)
eq_values = tf.equal(prediction, tf.cast(y_true, tf.int64))
acc = tf.reduce_mean(tf.cast(eq_values, tf.float32))
op = tf.Print([], [y_true], summarize=self.BATCH_SIZE, message="EXPECT: ")
op = tf.Print(op, [prediction], summarize=self.BATCH_SIZE, message="ACTUAL: ")
op = tf.Print([op], [acc], summarize=self.BATCH_SIZE, message="Acuraccy: ")
return op
model_trainer = ModelTrainer()
prediction_client = PredictionClient()
# get model parameters as private tensors from model owner
params = tfe.define_private_input('model-trainer', model_trainer.provide_input, masked=True) # pylint: disable=E0632
# we'll use the same parameters for each prediction so we cache them to avoid re-training each time
params = tfe.cache(params)
# get prediction input from client
x, y = tfe.define_private_input('prediction-client', prediction_client.provide_input, masked=True) # pylint: disable=E0632
# helpers
conv = lambda x, w, s: tfe.conv2d(x, w, s, 'VALID')
pool = lambda x: tfe.avgpool2d(x, (2, 2), (2, 2), 'VALID')
# compute prediction
Wconv1, bconv1, Wfc1, bfc1, Wfc2, bfc2 = params
bconv1 = tfe.reshape(bconv1, [-1, 1, 1])
layer1 = pool(tfe.relu(conv(x, Wconv1, ModelTrainer.STRIDE) + bconv1))
# config file was specified
config_file = sys.argv[1]
config = tfe.RemoteConfig.load(config_file)
tfe.set_config(config)
tfe.set_protocol(tfe.protocol.Pond())
def provide_input() -> tf.Tensor:
# pick random tensor to be averaged
return tf.random_normal(shape=(10, ))
if __name__ == '__main__':
# get input from inputters as private values
inputs = [
tfe.define_private_input('inputter-0', provide_input),
tfe.define_private_input('inputter-1', provide_input),
tfe.define_private_input('inputter-2', provide_input),
tfe.define_private_input('inputter-3', provide_input),
tfe.define_private_input('inputter-4', provide_input),
]
# sum all inputs and divide by count
result = tfe.add_n(inputs) / len(inputs)
def receive_output(average: tf.Tensor) -> tf.Operation:
# simply print average
return tf.print("Average:", average)
# send result to receiver
result_op = tfe.define_output('result-receiver', result, receive_output)
import tf_encrypted as tfe
from common import DataOwner, ModelOwner, LogisticRegression
num_features = 10
training_set_size = 2000
test_set_size = 100
batch_size = 100
num_batches = (training_set_size // batch_size) * 10
model = LogisticRegression(num_features)
model_owner = ModelOwner('model-owner')
data_owner = DataOwner('data-owner', num_features, training_set_size,
test_set_size, batch_size)
x_train, y_train = tfe.define_private_input(data_owner.player_name,
data_owner.provide_training_data)
x_test, y_test = tfe.define_private_input(data_owner.player_name,
data_owner.provide_testing_data)
reveal_weights_op = tfe.define_output(model_owner.player_name, model.weights,
model_owner.receive_weights)
with tfe.Session() as sess:
sess.run([tfe.global_variables_initializer(), data_owner.initializer],
tag='init')
model.fit(sess, x_train, y_train, num_batches)
model.evaluate(sess, x_test, y_test, data_owner)
sess.run(reveal_weights_op, tag='reveal')