xieyuschen

Cross Origin Resource Share

之前遇到的问题

之前的跨域问题很意外，hmm，我对这个东西还没有什么概念。情况是这样的，首先我写了几个api，然后监听8080端口。使用nginx进行代理，将对80访问的内容和对432访问的内容全部转发到127.0.0.1:8080去。然后前端在发请求的时候就遇到了跨域的问题。 解决方案：在nginx里面加一个同意跨域的设置 Access-Control-Allow-Origin:*。即可解决。

简单的提几个问题出来：

• 跨域请求被阻塞发生在什么时候？ 是nginx完成的阻塞，还是程序本身的阻塞

回答 阻塞由浏览器来完成，即正常发送请求，后端正常给予响应，但响应结果被浏览器拦截。

xieyuschen

How to specify which way the key pair specified?

Here I record how to generate a key-pair to encrypt and decrypt. So I'm sure it use rsa pkcs1v15 to encrypt,and I can do encrypt and decrypt directly as the post above.
But when it comes to a given public-private key pair,thing seems unnormal:

Problem I encoutered:

When I encountered key pair in thoes files(pay attention that this is base64 encoding):

• public.pem:

-----BEGIN PUBLIC KEY-----

xieyuschen

Encrypt and decrypt by ras pkcs1 by key-pair in pem files

Generate Key-Pair randomly

Thanks to blog here, I finally understood how rsa encrypt and decrypt.

Generate public-private key pair

//copy from https://gist.github.com/miguelmota/3ea9286bd1d3c2a985b67cac4ba2130a 
//call GenerateKeyPair() can generate public-private key pem file for you
func GenerateKeyPair(){