Embodiments of welding and cutting systems are disclosed. A welding or cutting system includes a power source to provide electrical power for a welding or cutting process. The system includes a torch having a cryptographic device, and is to be used with the power source during the process and communicate with the power source. The cryptographic device is configured to receive an encryption key seeded by the power source during first time power-on initialization of the welding power source or after the torch is replaced. The cryptographic device is configured to store an unlock code associated with the power source, generate an encrypted message, which includes the unlock code, based on the encryption key, and communicate the encrypted message to the power source. The power source is configured to cease further operation unless the power source determines the torch to be a genuine manufacturer torch based on the unlock code.

A Software in the Loop (SiL) system and method is disclosed which may include a simulator operable to provide an environment to simulate dynamic systems, enable rapid development, validation of systems, and testing of complex systems. The system and method may include assembling one or more unsecured models operable to simulate the real-world system. The system and method may then encrypt and generate at least one secured model from the one or more unsecured models using a first cryptographic key. The at least one secured model may be decrypted using a sealed decryption key. The decrypted secured model may then be executed within the one or more TEEs. The at least one secured model may be operable to process incoming data and outgoing data.

The present application is directed to transparent execution of secret content. A device may be capable of downloading content that may include at least one secret portion, wherein any secret portions of the content may be directed to a secure workplace in the device not accessible to device operating system components, applications, users, etc. The device may then present the content in a manner that allows secret portions of the content to be executed without direct access. For example, the device may download content, and a director module in the device may direct any secret portions of the downloaded content to a secure workspace. During execution of the content, any inputs required by the secret portions may be provided to the secure workspace, and any resulting outputs from the secret portions may then be used during content presentation.

A method of writing data to a memory device and reading data from the memory device includes issuing a challenge to a PUF device during a power-up process in order to derive a PUF response, error correcting the PUF response, providing delinearized addresses via a delinearization algorithm to the memory device using the error corrected PUF response, masking data, which is written to the memory device, via a masking module using the error corrected PUF response, de-masking data, which is read from the memory device, via the masking module (19) using the error corrected PUF response; and performing a check-sum verification of read data such that address delinearization and data masking are used together to obfuscate the memory content.

A method of authenticating a consumable or detachable element of a continuous inkjet printer comprising: the controller of the printer generating a 1.sup.st item of random information that is dispatched to an authentication circuit of the element; encrypting the 1.sup.st item of information by the authentication circuit using a 1.sup.st encryption algorithm and a 1.sup.st secret key to form a 1.sup.st item of encrypted random information; dispatching the 1.sup.st item of information to the controller; encrypting the 1.sup.st item of information by the controller using a 2.sup.nd encryption algorithm and a 2.sup.nd secret key to form a 2.sup.nd item of encrypted random information; comparing the 1.sup.st item of encrypted random information with the 2.sup.nd encrypted item of random information to authenticate the consumable element; and if the consumable element is authenticated, dispatching at least one part of a 3.sup.rd key, termed the shared key, by the element to the printer.

There is disclosed a method of providing an authentication service, wherein: i) a plurality of authentication virtual appliances is deployed in a distributed network by way of an authentication management platform application; ii) a pool of authentication licences is allocated to the authentication management platform application, each licence comprising computer code permitting an end user to authenticate his/her identity to at least one authentication virtual appliance by way of a predetermined computer-implemented authentication protocol; and iii) the management platform application allocates, revoke and reallocate authentication licences, from the pool of authentication licences, to end users by way of a graphical user interface.

A method is provided that determines whether to allow an application (app) for use or restrict the app on a set top box (STB). The method includes the steps of measuring at the STB, one or more resources used by the app; comparing at the STB, one or more thresholds set by an operator; and determining if the one or more resources used by the app exceed one or more thresholds set by the operator. Another method is provided that monitors applications (apps) that are installed a set top box (STB) for illegal or harmful activity by a policy manager. This method includes downloading and copying an app from an external source; installing or uninstalling the app into an application folder; providing a notification informing the policy manager of the installing or uninstalling of the app; and evaluating the app be installed or uninstalled.

A method for managing licenses for soft IP on a partially reconfigurable hardware system, in particular an FPGA, wherein a license manager is provided in the non-configurable part of the hardware system, or is accessible only for the non-configurable part of the hardware system, where the license manager has exclusive access to a non-volatile memory in which license data having a time restriction of the useful life of at least one soft IP is stored, where before activating a particular soft IP, the license manager checks whether the useful life has expired, where the license manager only releases use of the soft IP if the useful life has not yet expired, where the license data is changed using a key, which is stored in a non-volatile memory for license data, and where a new key is stored and the preceding key is deleted when the license data is changed.

The invention is a method for controlling execution of an application. The method comprising: installing and activating a software license unit including License terms and a secure repository comprising both an applet and parameters, providing a virtual USB dongle including a command gate, a License validator, a VM controller and a VM engine initially devoid of applet, verifying the License terms and only if the verification of the License terms is successful: loading said applet and parameters to the VM engine and enabling the Command gate, initializing configuration data and secret data in the VM engine by using the parameters stored in the VM engine then exchanging, between the applet and said hardware function driver, USB messages to control execution of said application.

A computer system is configured for digital rights management for distributing and tracking downloadable proprietary source code defining a 3-D object and being usable to print the object on a 3D printer and protect the 3D object data from unauthorized printing. The computer system stores an inventory of proprietary source code corresponding to designs of a plurality of 3D objects, and enables a user to see the inventory of designs of the plurality of 3D objects in an online store, and permits the user to securely purchase use of the source code of a desired 3D object viewed therein. The computer system sends the proprietary source code defining the desired 3D object to a 3D printer, and controls printing of the desired 3D object made by the 3D printer to prevent further use of the source code when the purchased use in completed, using one of three different typologies.