Golang 언어 기능 탐색: 네트워크 보안 및 암호화된 통신

package main

import (
    "crypto/aes"
    "crypto/cipher"
    "crypto/rand"
    "encoding/hex"
    "fmt"
    "io"
)

func main() {
    key := []byte("0123456789abcdef") // 16-byte secret key
    plaintext := []byte("Hello, World!") // plaintext to be encrypted

    // Create a new AES block cipher using the provided key
    block, err := aes.NewCipher(key)
    if err != nil {
        panic(err)
    }

    // Create a new GCM cipher mode using the block cipher
    aesGCM, err := cipher.NewGCM(block)
    if err != nil {
        panic(err)
    }

    // Generate a random nonce
    nonce := make([]byte, aesGCM.NonceSize())
    if _, err := io.ReadFull(rand.Reader, nonce); err != nil {
        panic(err)
    }

    // Encrypt the plaintext using the GCM cipher mode
    ciphertext := aesGCM.Seal(nil, nonce, plaintext, nil)

    // Print the ciphertext in hexadecimal format
    fmt.Println(hex.EncodeToString(ciphertext))

    // Decrypt the ciphertext using the same GCM cipher mode and nonce
    decrypted, err := aesGCM.Open(nil, nonce, ciphertext, nil)
    if err != nil {
        panic(err)
    }

    // Print the decrypted plaintext
    fmt.Println(string(decrypted))
}

package main

import (
    "crypto/tls"
    "fmt"
    "io/ioutil"
    "net/http"
)

func main() {
    url := "https://example.com" // target URL

    // Configure a TLS client with InsecureSkipVerify to disable certificate verification
    tlsConfig := &tls.Config{InsecureSkipVerify: true}

    // Create a new HTTP client with the TLS configuration
    client := &http.Client{Transport: &http.Transport{TLSClientConfig: tlsConfig}}

    // Send a GET request to the target URL using the HTTP client
    response, err := client.Get(url)
    if err != nil {
        panic(err)
    }
    defer response.Body.Close()

    // Read the response body
    body, err := ioutil.ReadAll(response.Body)
    if err != nil {
        panic(err)
    }

    // Print the response body
    fmt.Println(string(body))
}