Jianqing's Blog

Here is one simple demo about using browser-use to automate the Web tasks

• https://github.com/browser-use/browser-use

from langchain_openai import ChatOpenAI
from browser_use import Agent
import asyncio
from dotenv import load_dotenv
load_dotenv()

async def main():
    agent = Agent(
        task="Summarize all my tasks in 

Create tunnel

First create one Tunnel in the Web Dashboard

• Networks->Tunnels->Create a tunnel

Then install the cloudflared on Mac

brew install cloudflared && 

sudo cloudflared service install eyJhIjoiNGNkZWY4xxxxx.......

Update the Public Hostname

After you finished the cloudflared installation, then you …

The DeepSeek just released the DeepSeek R1, and it’s Open Source, so let’s running it locally with ollama

First, I got one Mac Pro

Setup Environment

Install the monitor tools

• asitop show the Mem/GPU/CPU usage and power
• htop show the

As we know the RSA certificates

1. we will choose two primes p,q
2. N=p*q
3. phi_N = (p-1)*(q-1)
4. Then choose e, e.g. 65537
5. Then calculate the d, e*d % phi_N = 1
6. Then we have the public key (e, N), private key

在密码学中经常看到a^b mod n运算，当b很大的时候，就不能够按照简单的数学运算进行了。

“Square and Multiply”就是一种窍门。

把指数转换成2进制，从左到右开始计算

• 当指数二进制为1时 z^2*a mod n
• 当指数二进制为0时 z^2 mod n

其中z为上一个指数二进制计算结果(从左到右)，初始为1

举例a^b mod 21 = 3^11 mod 21 = 3^1011 mod 21

• z = 1
• z = z^2*a = 1^2 * 3 mod 21 =