Golang AES StreamReader加密 – 示例省略了对加密数据的任何身份验证

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@H_262_0@ 最后,我在StackOverflow上发布了我的第一个问题.我现在使用这个网站多年了,我总能找到所有问题的答案:)

我正在实现一个基于official Golang cipher example的文件加密后台守护进程：

func ExampleStreamReader() {
    key := []byte("example key 1234")

    inFile,err := os.Open("encrypted-file")
    if err != nil {
        panic(err)
    }
    defer inFile.Close()

    block,err := aes.NewCipher(key)
    if err != nil {
        panic(err)
    }

    // If the key is unique for each ciphertext,then it's ok to use a zero
    // IV.
    var iv [aes.blockSize]byte
    stream := cipher.NewOFB(block,iv[:])

    outFile,err := os.OpenFile("decrypted-file",os.O_WRONLY|os.O_CREATE|os.O_TRUNC,0600)
    if err != nil {
        panic(err)
    }
    defer outFile.Close()

    reader := &cipher.StreamReader{S: stream,R: inFilE}
    // Copy the input file to the output file,decrypTing as we go.
    if _,err := io.Copy(outFile,reader); err != nil {
        panic(err)
    }

    // Note that this example is simplistic in that it omits any
    // authentication of the encrypted data. If you were actually to use
    // StreamReader in this mAnner,an attacker Could flip arbitrary bits in
    // the output.
}

func ExampleStreamWriter() {
    key := []byte("example key 1234")

    inFile,err := os.Open("plaintext-file")
    if err != nil {
        panic(err)
    }
    defer inFile.Close()

    block,err := os.OpenFile("encrypted-file",0600)
    if err != nil {
        panic(err)
    }
    defer outFile.Close()

    writer := &cipher.StreamWriter{S: stream,W: outFilE}
    // Copy the input file to the output file,encrypTing as we go.
    if _,err := io.Copy(writer,inFilE); err != nil {
        panic(err)
    }

    // Note that this example is simplistic in that it omits any
    // authentication of the encrypted data. If you were actually to use
    // StreamReader in this mAnner,an attacker Could flip arbitrary bits in
    // the decrypted result.
}@H_674_4@ 
 
以下引用是什么意思？关于我应该注意什么才能提供安全的加密和解密？
 
  
  
 
谢谢！

func Open(out []byte,Box []byte,nonce *[24]byte,key *[32]bytE) ([]byte,bool)
func Seal(out,message []byte,key *[32]bytE) []byte@H_674_4@ 
 
如果您正在使用小消息,则此API可能会更容易使用.