Abstract: Disclosed are apparatuses, systems, and techniques to perform and facilitate secure ladder computational operations whose iterative execution depends on secret values associated with input data. Disclosed embodiments balance execution of various iterations in a way that is balanced for different secret values, significantly reducing vulnerability of ladder computations to adversarial side-channel attacks.

Abstract: Disclosed are apparatuses, systems, and techniques to perform and facilitate secure ladder computational operations whose iterative execution depends on secret values associated with input data. Disclosed embodiments use masking factors that re-blind secret data without exposing the unmasked secret data between iterations of the ladder computations. Some disclosed embodiments use Montgomery multiplication techniques to facilitate secret data masking by efficiently avoiding modular division operations. Disclosed embodiments significantly reduce the vulnerability of ladder computations to adversarial side-channel attacks.

Abstract: A solar cell silicon wafer carrying device and a transmission system are provided, wherein the solar cell silicon wafer carrying device comprises a tray and an auxiliary mask member, and a side surface of the tray is provided with a spacing slot and a receiving slot. The spacing slot and the receiving slot are arranged in a stepped manner with the spacing slot located below the receiving slot. The auxiliary mask member covers over the receiving slot and is provided with a mask hole in communication with the receiving slot. The mask hole is provided along a perimeter thereof with a shielding portion for shielding an edge of the receiving slot.