Security of Device-Independent Quantum Key Distribution in the Bounded-Quantum-Storage Model

Current security proofs for device-independent quantum key distribution have significant limitations, such as very low noise tolerance, requiring the use of many devices, or applying to a given Bell inequality only. A new proof---with the only assumption that the eavesdropper does not have a long-term quantum memory---tolerates realistic noise levels, uses only two devices, and broadens the security certification to the test of any Bell inequality.