def test_export(self, run_eagerly, export_dtype, export_expansion):
x = np.array([[12345, 34342]])
context = tf_execution_context(run_eagerly)
with context.scope():
ek, dk = paillier.gen_keypair()
assert isinstance(ek, paillier.EncryptionKey)
assert isinstance(dk, paillier.DecryptionKey)
n_exported = ek.export(export_dtype)
assert isinstance(n_exported, tf.Tensor)
assert n_exported.dtype == export_dtype
assert n_exported.shape == (1, 1), n_exported.shape
p_exported, q_exported = dk.export(export_dtype)
assert isinstance(p_exported, tf.Tensor)
assert p_exported.dtype == export_dtype
assert p_exported.shape == (1, 1), p_exported.shape
assert isinstance(q_exported, tf.Tensor)
assert q_exported.dtype == export_dtype
assert q_exported.shape == (1, 1), q_exported.shape
r = paillier.gen_randomness(ek, shape=x.shape)
assert isinstance(r, paillier.Randomness)
r_exported = r.export(export_dtype)
assert isinstance(r_exported, tf.Tensor)
assert r_exported.dtype == export_dtype
assert r_exported.shape == x.shape + export_expansion
c = paillier.encrypt(ek, x, r)
assert isinstance(c, paillier.Ciphertext)
c_exported = c.export(export_dtype)
assert isinstance(c_exported, tf.Tensor)
assert c_exported.dtype == export_dtype
assert c_exported.shape == x.shape + export_expansion
def test_add(self, run_eagerly, dtype, x0, x1):
expected = x0 + x1
context = tf_execution_context(run_eagerly)
with context.scope():
ek, dk = paillier.gen_keypair()
r0 = paillier.gen_randomness(ek, shape=x0.shape)
c0 = paillier.encrypt(ek, x0, r0)
r1 = paillier.gen_randomness(ek, shape=x1.shape)
c1 = paillier.encrypt(ek, x1, r1)
c = paillier.add(ek, c0, c1)
y = paillier.decrypt(dk, c, dtype=dtype)
np.testing.assert_equal(
context.evaluate(y).astype(np.int32), expected.astype(np.int32))
def test_encrypt_decrypt(self, run_eagerly, x, dtype):
context = tf_execution_context(run_eagerly)
with context.scope():
ek, dk = paillier.gen_keypair()
r = paillier.gen_randomness(ek, shape=x.shape)
c = paillier.encrypt(ek, x, r)
y = paillier.decrypt(dk, c, dtype=dtype)
assert isinstance(y, tf.Tensor)
assert y.dtype == dtype
np.testing.assert_equal(context.evaluate(y).astype(x.dtype), x)
def test_correctness(self, run_eagerly):
p = 100000015333
q = 100000015021
n = p * q
nn = n * n
g = 1 + n
x = 123456789
r = 5083216764521909821749
c = pow(g, x, nn) * pow(r, n, nn) % nn
context = tf_execution_context(run_eagerly)
with context.scope():
ek = paillier.EncryptionKey(tf.constant([[str(n)]]))
plaintext = np.array([[x]]).astype(str)
randomness = paillier.Randomness(tf.constant([[str(r)]]))
ciphertext = paillier.encrypt(ek, plaintext, randomness)
expected = np.array([[c]]).astype(str)
actual = ciphertext.export(tf.string)
np.testing.assert_equal(context.evaluate(actual).astype(str), expected)
def _encrypt(encryption_key_raw, plaintext):
ek = paillier.EncryptionKey(encryption_key_raw)
ciphertext = paillier.encrypt(ek, plaintext)
return ciphertext.export(dtype=transit_dtype)