Wednesday, February 22, 2012

Very nice idea for presenting the GPA of student

It is not good to show the name of student on the manuscripts, an option to solve such a problem is to show the hash value of student name (plus some random number) using MD5 algorithm. However, the student needs to know his random number. An alternative is to use the matriculation number, so the student has to keep it as secrete, otherwise others may know your scores.

Monday, February 20, 2012

My public key on keyserver:

My public key (key ID: B92C8E6F) on keyserver:

gpg usage note

The gpg has a new version: 1.4.12. When I used gpg --gen-key, it outputted two pairs of keys: main keys for signing and verifying (pub), sub keys for encryption and decryption (sub). However, to encrypt something, it is not necessary to use sub key ID, you can use pub key ID instead.

A good explanation on this topic is here:

Wednesday, February 15, 2012

A nice book binding shop in Goettingen (for publications,哥廷根书籍装订店)

Today is a big day for me, because I am going to submit my PhD thesis. Since the PCS program in University of Goettingen requires a binded thesis as a book, I have to find a binding shop. My colleague recommends a shop near the city center, which is Dieter Fischbach Buchbinderei. I brought the printed pages to there, and waited for about one hour. The final binded thesis is perfect, which is only cost 4.8 Euro for soft cover pages. Here is the location: