Golang 言語機能の探求: ネットワーク セキュリティと暗号化通信

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)) }