AES Encryption with Golang and Gorilla Mux

This is a simple example of an HTTP server in Go that implements AES encryption using CFB (Cipher Feedback) mode.

Features

The server has two routes:

/encrypt/{key}/{plainText} - Receives a key and plain text as parameters and returns the encrypted text in hexadecimal format.
/decrypt/{key}/{cipherText} - Receives a key and a hexadecimal encrypted text as parameters and returns the original plain text.

Make sure you have Go installed on your machine before running this code.

Clone this repository to your local environment.
Navigate to the project directory using the terminal.
Run the following command to start the server:
```
go run main.go
```
The server will run at http://localhost:3000 or at the port defined by the PORT environment variable.
Use an HTTP client (such as cURL or Postman) to send requests to the /encrypt and /decrypt routes as needed.

Encrypt Text Send a GET request to http://localhost:3000/encrypt/mykey/HelloWorld:

curl http://localhost:3000/encrypt/mykey/HelloWorld

Response:

5f0e0a33c22786762fbde72e1c78e900

Decrypt Text Send a GET request to http://localhost:3000/decrypt/mykey/5f0e0a33c22786762fbde72e1c78e900:

curl http://localhost:3000/decrypt/mykey/5f0e0a33c22786762fbde72e1c78e900

Response:

HelloWorld

Make sure to keep the encryption and decryption keys consistent when using the server.
This is just a simple example for educational purposes and should not be used in production without considering additional security aspects.