def encrypt(seed, sens_priv_num, c_factor, sensor_data):
data_size = np.size(sensor_data)
sensing_matrix = Utility.generate_sensing_matrix(
seed, round((1 - c_factor) * data_size), data_size)
compressed_data = np.dot(sensing_matrix, sensor_data)
return compressed_data * Utility.generate_secret_value(
seed, sens_priv_num)
def decrypt(seed, sensor_priv_num, org_data_len, n_nonzero_coefs, enc_data):
enc_data /= Utility.generate_secret_value(seed, sensor_priv_num)
enc_data_size = np.size(enc_data)
sensing_matrix = Utility.generate_sensing_matrix(seed, enc_data_size, org_data_len)
omp = orthogonal_mp(sensing_matrix, enc_data, n_nonzero_coefs = n_nonzero_coefs)
return omp
