Skip to main content

杂记 20130821

一直纠结是用中文写还是英文写还是都写，随心情好了。

Windows 8 FileHistory 不能指定外置硬盘
参考：http://answers.microsoft.com/en-us/windows/forum/windows_8-hardware/windows-8-file-history-does-not-recognize-my/361a527b-d35b-4753-b4a6-3ccff738ff62?page=2
- 确定该硬盘没有被加入任何library
- 删除 C:\Users\USERNAME\AppData\Local\Microsoft\Windows\File History


给我妹家里配无线路由，主要是希望用一个小路由增强一个大路由（外接adsl）的信号
一开始给小路由设的repeater模式，但是不太好使，于是用ap模式+开启wds，然后小路由自动禁用了dhcp。这时在小路由的信号内手动设置ip和dns可以上网。最后把小路由dhcp打开，然后把两个路由分配的ip段分开就可以了。
两个路由的ssid，信道和加密方式都应该相同。
按理说WDS应该可以的，但是似乎小路由不太行。


利用PuttyGen声称公钥然后让服务器信任
参考：http://www.dailyiteration.com/howto-passwordless-ssh-authentication-with-putty/
主要是需要用sshkeygen -i -f 转一下格式


Gmail里拖拽图片附件，如果拖到正文，就会添加成inline image；如果拖到下方工具栏上，就会添加成附件
Labels:

Comments

Post a Comment

Popular posts from this blog

Determine Perspective Lines With Off-page Vanishing Point

In perspective drawing, a vanishing point represents a group of parallel lines, in other words, a direction. For any point on the paper, if we want a line towards the same direction (in the 3d space), we simply draw a line through it and the vanishing point. But sometimes the vanishing point is too far away, such that it is outside the paper/canvas. In this example, we have a point P and two perspective lines L1 and L2. The vanishing point VP is naturally the intersection of L1 and L2. The task is to draw a line through P and VP, without having VP on the paper. I am aware of a few traditional solutions: 1. Use extra pieces of paper such that we can extend L1 and L2 until we see VP. 2. Draw everything in a smaller scale, such that we can see both P and VP on the paper. Draw the line and scale everything back. 3. Draw a perspective grid using the Brewer Method. #1 and #2 might be quite practical. #3 may not guarantee a solution, unless we can measure distances/p...
3 comments
Read More »

Hardware Password Manager

[Updates 2025-01-20] The original blog post assumes that all passwords are stored in one password manager, and the password manager either unlocks everything or nothing (e.g. Keepass). After discussing with friends, I realized that if I use something like pass , and I use a hardware GPG token, I can actually store and sync all encrypted passwords to all devices, because I will only decrypt the passwords on demand, and the computer will not see the GPG private key. The compromise is that the computer will see the list of all password entries (e.g. accounts), as well as a few other issues . I've been using Keepass for many years. I don't use online password services because I cannot fully trust them. Besides, I may not always have Internet connection, which is why I also don't use a self-hosted service. Everything has been working fine, until I turn my paranoid knob to the max. Here's the thought experiment . The Imaginary Scenario Let's say I have 100 PCs for differe...
Post a Comment
Read More »

ESP32S3: Flash Encryption and Secure Boot

Flash encryption and secure boot are useful security features for ESP32S3 chip. While not perfect, they definitely make it harder to extract the secrets in the chip. However, it is tricky to enable both features at the same time. The topic is actually discussed in the official documentation: ESP32S3 Security Features Security Features Enablement Workflows Especially, the second one mentioned it is recommended to enable flash encryption before secure boot. But I still find the documentation confusing. In the end I was able to successfully enable both, here's my findings. My Understanding After my adventure, here's what I think could have worked. WARNING, this is untested. Follow  Security Features Enablement Workflows : Burn all the keys, as long as their purpose eFuses and read/write protections Burn other security eFuses, but DO NOT burn ENABLE_SECURITY_DOWNLOAD in the middle, which is mentined at the end of the instruction for both flash encryption and secure boot. Burn...
Post a Comment
Read More »