Methods and devices configured to provide a key-free, one-way coding of sensitive data such that efficient parallel scaling methods may be used to perform computations related to the sensitive initial data without risking unwanted disclosure of the sensitive initial data are provided. In some embodiments, a set of intermediate representations of the initial data set is calculated using a one-way computation. The set of intermediate representations is then sent to a server computing system for calculating results in a scalable manner. The initial data is secured from unwanted access at the server computing system at least because the one-way computation does not allow the initial data to be derived from the intermediate representations.