在Debian系統下,對Golang應用程序的日志進行加密可以通過多種方式實現。以下是一些常見的方法:
Golang的標準庫提供了crypto
包,可以用來實現加密功能。你可以使用這個包來加密日志文件的內容。
安裝必要的庫:
sudo apt-get update
sudo apt-get install libssl-dev
編寫加密日志的代碼:
package main
import (
"crypto/aes"
"crypto/cipher"
"crypto/rand"
"encoding/base64"
"fmt"
"io"
"os"
)
func encrypt(plainText []byte, key []byte) (cipherText []byte, err error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
plainText = pkcs7Padding(plainText, aes.BlockSize)
cipherText = make([]byte, aes.BlockSize+len(plainText))
iv := cipherText[:aes.BlockSize]
if _, err := io.ReadFull(rand.Reader, iv); err != nil {
return nil, err
}
stream := cipher.NewCFBEncrypter(block, iv)
stream.XORKeyStream(cipherText[aes.BlockSize:], plainText)
return cipherText, nil
}
func pkcs7Padding(ciphertext []byte, blockSize int) []byte {
padding := blockSize - len(ciphertext)%blockSize
padtext := bytes.Repeat([]byte{byte(padding)}, padding)
return append(ciphertext, padtext...)
}
func main() {
key := []byte("this is a key123") // 16 bytes key for AES-128
plainText := []byte("Hello, World!")
encrypted, err := encrypt(plainText, key)
if err != nil {
fmt.Println("Error encrypting:", err)
return
}
encodedEncrypted := base64.StdEncoding.EncodeToString(encrypted)
fmt.Println("Encrypted:", encodedEncrypted)
// Save the encrypted data to a file
file, err := os.Create("encrypted_log.txt")
if err != nil {
fmt.Println("Error creating file:", err)
return
}
defer file.Close()
_, err = file.Write([]byte(encodedEncrypted))
if err != nil {
fmt.Println("Error writing to file:", err)
return
}
}
你也可以在將日志寫入文件之前,使用外部加密工具(如gpg
)對日志文件進行加密。
安裝GPG:
sudo apt-get update
sudo apt-get install gpg
編寫腳本加密日志文件:
#!/bin/bash
LOG_FILE="app.log"
ENCRYPTED_FILE="app.log.gpg"
# Encrypt the log file using GPG
gpg --symmetric --cipher-algo AES256 --output $ENCRYPTED_FILE $LOG_FILE
# Optionally, remove the original log file
rm $LOG_FILE
運行腳本:
chmod +x encrypt_log.sh
./encrypt_log.sh
一些日志庫(如logrus
)提供了內置的加密功能或可以通過插件實現加密。
安裝logrus
和gopkg.in/yaml.v2
:
go get github.com/sirupsen/logrus
go get gopkg.in/yaml.v2
編寫加密日志的代碼:
package main
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"crypto/rand"
"encoding/base64"
"fmt"
"io"
"os"
"github.com/sirupsen/logrus"
)
type Config struct {
Key string `yaml:"key"`
}
func encrypt(plainText []byte, key []byte) (cipherText []byte, err error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
plainText = pkcs7Padding(plainText, aes.BlockSize)
cipherText = make([]byte, aes.BlockSize+len(plainText))
iv := cipherText[:aes.BlockSize]
if _, err := io.ReadFull(rand.Reader, iv); err != nil {
return nil, err
}
stream := cipher.NewCFBEncrypter(block, iv)
stream.XORKeyStream(cipherText[aes.BlockSize:], plainText)
return cipherText, nil
}
func pkcs7Padding(ciphertext []byte, blockSize int) []byte {
padding := blockSize - len(ciphertext)%blockSize
padtext := bytes.Repeat([]byte{byte(padding)}, padding)
return append(ciphertext, padtext...)
}
func main() {
logrus.SetFormatter(&logrus.JSONFormatter{})
config := Config{
Key: "this is a key123", // 16 bytes key for AES-128
}
logrus.Info("This is an info message")
// Encrypt the log message before writing to file
var buf bytes.Buffer
logrus.SetOutput(&buf)
logrus.Info("This is an info message")
encrypted, err := encrypt(buf.Bytes(), []byte(config.Key))
if err != nil {
logrus.Fatal("Error encrypting log:", err)
}
encodedEncrypted := base64.StdEncoding.EncodeToString(encrypted)
file, err := os.Create("encrypted_log.txt")
if err != nil {
logrus.Fatal("Error creating file:", err)
}
defer file.Close()
_, err = file.Write([]byte(encodedEncrypted))
if err != nil {
logrus.Fatal("Error writing to file:", err)
}
}
通過這些方法,你可以在Debian系統下對Golang應用程序的日志進行加密,確保日志文件的安全性。