@inproceedings {261433, author = {Yossi Matias and Alain Mayer and Avi Silberschatz}, title = {Lightweight Security Primitives for {E-Commerce}}, booktitle = {USENIX Symposium on Internet Technologies and Systems (USITS 97)}, year = {1997}, address = {Monterey, CA}, url = {https://www.usenix.org/conference/usits-97/lightweight-security-primitives-e-commerce}, publisher = {USENIX Association}, month = dec }