密码保护文件在android [英] Password Protection of file in android

问题描述

我想给我的文件保存一些保存在SDCard或应用程序沙盒中。目前我正在使用Cipher加密或解密任何文件。使用密码的问题是时间。如果文件很大，需要很多时间。像目前我加密的视频文件需要超过4分钟解密。我想知道，我们可以在没有加密的情况下应用某种密码保护文件吗？如果有人知道我们该怎么做，请让我知道。

解决方案

简短答案是否。这是不可能的。文件在SD卡上存储为1和0的数组，因此每个程序都可以访问SD卡并读取数据。加密是保护您的数据的最佳方法。

I would like to give some kind of protection to my files either stored in SDCard or in application sandbox. Currently I am using Cipher to encrypt or decrypt any file. Problem with using Cipher is time. It takes lots of time if file is large. Like currently I am encrypting a video file which takes more than 4 minutes to decrypt. I want to know that Can we apply some kind of password protection to file without encrypting ? If anyone knows how can we do that, please let me know.

解决方案

Short answer is NO. That is not possible. File is on SD card stored as "array of 1 and 0" so each program can access SD card and read your data. Encryption is best way to keep your data secret.

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