我正在嘗試使用 Go crypto/aes 包加密文件。我到目前為止：func encrypt(source string, localdir string) error { src := filepath.Join("/home/bacula/cloud-backup/"+localdir, source) dst := filepath.Join(src + ".aes") fmt.Println(src) fmt.Println(dst) key := []byte("example key 1234") iv := []byte(key)[:aes.BlockSize] aesBlockEncrypter, err := aes.NewCipher([]byte(key)) if err != nil { return err } aesEncrypter := cipher.NewCFBEncrypter(aesBlockEncrypter, iv) aesEncrypter.XORKeyStream([]byte(dst), []byte(src)) return nil}我的第一個問題是，如何改進(jìn)生成 IV 的方式？其次，沒有輸出文件，那么如何通過 XORKeyStream 流式傳輸文件？
1 回答
UYOU
TA貢獻(xiàn)1878條經(jīng)驗 獲得超4個贊
crypto/cipher包文檔中有一個示例。
我已經(jīng)調(diào)整了示例為您制作了新示例：
func main() {
// read content from your file
plaintext, err := ioutil.ReadFile("you_file_to_be_encrypted")
if err != nil {
panic(err.Error())
}
// this is a key
key := []byte("example key 1234")
block, err := aes.NewCipher(key)
if err != nil {
panic(err)
}
// The IV needs to be unique, but not secure. Therefore it's common to
// include it at the beginning of the ciphertext.
ciphertext := make([]byte, aes.BlockSize+len(plaintext))
iv := ciphertext[:aes.BlockSize]
if _, err := io.ReadFull(rand.Reader, iv); err != nil {
panic(err)
}
stream := cipher.NewCFBEncrypter(block, iv)
stream.XORKeyStream(ciphertext[aes.BlockSize:], plaintext)
// create a new file for saving the encrypted data.
f, err := os.Create("a_aes.txt")
if err != nil {
panic(err.Error())
}
_, err = io.Copy(f, bytes.NewReader(ciphertext))
if err != nil {
panic(err.Error())
}
// done
}
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