Abstract: Disclosed in some examples are methods, systems, devices, and machine-readable mediums for securing biometric data using distance-preserving transformations. A distance-preserving transformation is a function which maps elements to the same or another metric space such that the distance between the elements in the new metric space is equal to the distance between the elements in the original metric space.

Abstract: Method, network element, user equipment (UE) and system are disclosed for securing device-to-device (D2D) communication in a wireless network. The wireless network has a first UE in an idle mode, a second UE in a connected mode, and a network element. The method comprises: encrypting the second UE's identification (ID) by using a first key which is known to the network element and the first UE and which is unknown to the second UE; sending the encrypted second UE's ID from the network element to the first UE via the second UE; and verifying the second UE's ID by using the encrypted second UE's ID.

Abstract: A method of processing a ciphertext, the method includes: acquiring a part of a plurality of encrypted elements included in the ciphertext, each of the plurality of encrypted elements being an encrypted element in which values of a plurality of elements in a multidimensional determination target vector are respectively encrypted by homomorphic encryption; decrypting the acquired part of the plurality of encrypted elements; and determining validity of the determination target vector based on a relationship between at least one value obtained by the decrypting and both of 0 and 1.

Abstract: Systems and methods are described that protect intellectual property rights in connection with 3-dimensional printing processes. In certain embodiments, an object a user would like to render with a 3-dimensional printing device may be compared with one or more managed objects having certain associated intellectual property rights. If the object is found to be similar to a managed object (e.g., similar in shape, function, composition, etc.), policy associated with the managed object may be enforced in connection with rendering the object. In this manner, intellectual property rights associated with the managed objects may be enforced.