Gee Law’s Blog
Ever since I used Windows NT (for me, the first Windows NT I used is Windows XP), I’ve been familiar with the importance of Ctrl+Alt+Delete. The combination is known as the secure attention sequence for Windows. In an uninfected copy of Windows, the sequence is handled exclusively by Windows, and is used to thwart trojan dialogs luring users’ credentials. Requiring SAS before Welcome Screen is a quite usable security feature. However, it is not the case for Credential User Interface.
A meta-blog that keeps the trace of my blog site. RSS output has been adjusted to fit the growth of my blog, and I finally decided to give a sh!t to a long-standing bug of Microsoft Edge and fixed the tiles ‘for them’.
PowerShell 在众 shell 中最突出的特色就是面向对象；然而，世界上还有很多命名是专为字节流管道设计的（兼容性大坑）。PowerShell 对待字节流管道那是十分 nasty！我写的这个小工具可以在对象和字节流之间做完美的润滑。更新：Aloxaf 实现了 Linux 版本的 Use-RawPipeline，起名 Use-PosixPipeline。
I learnt how to write uniform hybrid reductions in my rudimentary cryptography course, which are beasty beauties that wrap an adversary, trying break each of the many underlying cryptographic assumptions simultaneously. However, those constructions are less easy to write and read than using the transitivity of computational indistinguishability up to polynomially many times. The latter involves writing out the (perhaps polynomially many) hybrids and arguing that adjacent hybrids are indistinguishable. I also learnt non-uniform reductions, noticeably the technique to only work with deterministic adversaries. I’m writing a proof using hybrid argument lately, and I asked my advisor about whether I should write the beast or just the hybrids…
Nyuwa, the mother goddess of Chinese mythology, mends the sky according to an ancient Chinese legend. Today, Nyuwa is asked to mend the epigraph of a continuous function over an open set so that the function becomes convex. What can we say about this?