在java中创建一个受密码保护的文件 [英] Create a file protected by a password in java

问题描述

我想在JAVA中创建一个受密码保护的文件。
我的意思是，一旦我启动程序，我的程序创建的一个文件将被以前确定的密码直接保护。

有没有简单的方法做到这一点？

再一次，我的目标不是创建一个文件，然后添加一个密码，而是在创建过程中通过密码保护文件。
实际上，如果他/她已经设置了密码，我希望当前的亚军程序不能读取/编辑创建的文件。

因此，无论如何，如果你们中的一些人知道用java保护文件的简单方法，我将非常感激。

一天！

解决方案

你想用密码加密你的文件（的内容）。这是一个非常有名的图书馆： http://www.jasypt.org/

从他们的网站：

  ..加密和解密文本... 
 
 BasicTextEncryptor textEncryptor = new BasicTextEncryptor（）; 
 textEncryptor.setPassword（myEncryptionPassword）; 
字符串myEncryptedText = textEncryptor.encrypt（myText）; 
 ... 
 String plainText = textEncryptor.decrypt（myEncryptedText）; 
  

您可以将加密内容读取/写入文件。

I would like to create a file protected by a password in JAVA. What I mean is, once I launch the program, one file created by my program would be directly protected by previously determined password.

Is there an easy way to do it ?

Once again, my aim is not to create a file and then add it a password, but right during the creation protecting the file by a password. Actually, I want the current runner program not having access in reading/editing the created file EXCEPT if he/she has the password previously set.

So anyway, if some of you know an easy way to protect files when writing them thanks to java, I would be most grateful.

Have a nice day!

解决方案

You want to encrypt your file('s content) with a password. Here is a pretty well known library to do it: http://www.jasypt.org/

From their site:

..encrypting and decrypting a text...

BasicTextEncryptor textEncryptor = new BasicTextEncryptor();
textEncryptor.setPassword(myEncryptionPassword);
String myEncryptedText = textEncryptor.encrypt(myText);
...
String plainText = textEncryptor.decrypt(myEncryptedText);

You can read/write the encrypted content to your file.

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