现代密码学的挑战不仅是确保通信安全,而且要以既高效又可扩展的方式实现。
When making something, always get a few extras — extra material, extra parts, extra space, extra finishes. The extras serve as backups for mistakes, reduce stress, and fill your inventory for the future. They are the cheapest insurance.
想想!使用VLSI,我们可以在1平方厘米中包装100个ENIACS。