seal_poly_eval

[dv-ai]

There is a strange behavoir when using seal_poly_eval with the 3th parameter of coeffs different than 0 (in the unitary test the value is 0):

with tf.Session() as sess:
        x = np.array([[1, 2, 3], [4, 5, 5]], np.float32)
        coeffs = np.array([0.0, 0.0, 0.1, 0.00])
        pub_key, sec_key = seal_key_gen(gen_relin=True, gen_galois=True)
        x_var = seal_encrypt(x, pub_key)
        c_var = seal_poly_eval(x_var, coeffs, pub_key)
        c = seal_decrypt(c_var, sec_key, tf.float32)
        sess.run(c)

I have the exception:
terminate called after throwing an instance of 'std::logic_error'
what(): result ciphertext is transparent
Aborted

For others coefficients like "coeffs = np.array([0.1, 0.5, 0.1, 0.00])", I have the following exception:
terminate called after throwing an instance of 'std::invalid_argument'
what(): encrypted_ntt and plain_ntt parameter mismatch
Aborted

It is working when using the coefficents used in the unitary test (coeffs = np.array([0.5, 0.197, 0.0, -0.004]))

I have installed the files given by Wixee in the issue #62