dpdp42233 2017-04-18 03:45
浏览 276
已采纳

如何在Golang中使用rsa密钥对进行AES加密和解密

I want to generate rsa key pair(public and private), and then use them for AES encryption and decryption.e.g. Public key for Encryption and private key for Decryption.I wrote a simple code for this, but the problem is that when i run this code i get this error:

crypto/aes: invalid key size 1639

How can i resove this problem ?? My Encryption code is given bellow:

//genrarting private key
privateKey, err := rsa.GenerateKey(rand.Reader, 2014)
if err != nil {
    return
}
privateKeyDer := x509.MarshalPKCS1PrivateKey(privateKey)
privateKeyBlock := pem.Block{
    Type:    "RSA PRIVATE KEY",
    Headers: nil,
    Bytes:   privateKeyDer,
}
privateKeyPem := string(pem.EncodeToMemory(&privateKeyBlock))


//using privateKeyPem for encryption
text := []byte("My name is Astaxie")
ciphertext, err := encrypt(text, []byte(privateKeyPem))
if err != nil {
    // TODO: Properly handle error
    log.Fatal(err)
}
fmt.Printf("%s => %x
", text, ciphertext)

//Definition of encrypt()
func encrypt(plaintext []byte, key []byte) ([]byte, error) {
c, err := aes.NewCipher(key)
if err != nil {
    return nil, err
}

gcm, err := cipher.NewGCM(c)
if err != nil {
    return nil, err
}

nonce := make([]byte, gcm.NonceSize())
if _, err = io.ReadFull(rand.Reader, nonce); err != nil {
    return nil, err
}

return gcm.Seal(nonce, nonce, plaintext, nil), nil
}
  • 写回答

1条回答 默认 最新

  • 普通网友 2017-04-18 12:34
    关注

    As suggested in comments, i searched "hybrid cryptography" . And this example has solved my problem.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

报告相同问题?

悬赏问题

  • ¥15 Qt4代码实现下面的界面
  • ¥15 prism提示我reinstall prism 如何解决
  • ¥15 asp.core 权限控制怎么做,需要控制到每个方法
  • ¥20 while循环中OLED显示中断中的数据不正确
  • ¥15 这个视频里的stm32f4代码是怎么写的
  • ¥15 JNA调用DLL报堆栈溢出错误(0xC00000FD)
  • ¥15 请教SGeMs软件的使用
  • ¥15 自己用vb.net编写了一个dll文件,如何只给授权的用户使用这个dll文件进行打包编译,未授权用户不能进行打包编译操作?
  • ¥50 深度学习运行代码直接中断
  • ¥20 需要完整的共散射点成像代码