@InProceedings{FS08, author = {Serge Fehr and Christian Schaffner}, title = {Randomness Extraction Via $\delta$-Biased Masking in the Presence of a Quantum Attacker}, booktitle = {Theory of Cryptography---TCC~'08}, pages = {465--481}, series = {Lecture Notes in Computer Science}, volume = 4949, year = 2008, publisher = {Springer-Verlag} }