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Debian下Golang日志如何加密

小樊
39
2025-03-14 10:13:51
欄目: 編程語言

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:

方法一:使用Golang內置的加密庫

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。

  1. 安裝必要的庫

    sudo apt-get update
    sudo apt-get install libssl-dev
    
  2. 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
        }
    }
    

方法二:使用外部加密工具

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。

  1. 安裝GPG

    sudo apt-get update
    sudo apt-get install gpg
    
  2. 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
    
  3. 運行腳本

    chmod +x encrypt_log.sh
    ./encrypt_log.sh
    

方法三:使用日志庫的加密功能

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。

  1. 安裝logrusgopkg.in/yaml.v2

    go get github.com/sirupsen/logrus
    go get gopkg.in/yaml.v2
    
  2. 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。

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