Activity

加密方法
加密方法可以分为两大类。一类是对称加密（symmetric），还有一类叫做非对称加密（asymmetric）。前者的加密和解密过程都用同一密匙，后者的加密和解密用的是两个密钥。在对称加密的情况下，密钥只有一把，一旦密钥泄漏，密码也就被破解。在非对称加密的情况下，密钥有两把，一把是public，还有一把是private。区块链使用的是rsa非对称加密。对于非对称加密：

公钥和私钥是一一对应的关系 […]

The Five Key Ideas

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Give honest and sincere appreciation.
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Six ways to make people like you

Become g […]

I am currently learning these two classes about Happiness, Well-being, and positiveness.  It certainly benefited me a lot, and all are free.

The first one is Positive Psychology, taught by Tal Ben-Shahar at H […]

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Carbs are essential and controversial. However, there are some commonly agreed guidelines -choose “whole” instead of “Refined”. Below are some example sources.

healthy carbs: barley, squash, whole-wheat bread, […]

I tried several times to make get-up-early a habit, but failed each time.  I did succeed from time to time, but could not make it consistent. I really want to be an early riser, and now officially make it a c […]