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CipherInputStream输入缓冲区大小如何影响应用程序的安全性？

[英]How CipherInputStream input buffer size can affects app's security?

原文 2014-04-30 14:53:44 3 1 java/ android/ security/ inputstream/ javax.crypto

My android application is loading image from CipherInputStream. 我的Android应用程序正在从CipherInputStream加载图像。 It takes too long for BitmapFactory to encode it. BitmapFactory对其进行编码花费的时间太长。 So with the use of reflection I've changed CipherInputStream inputBuffer size from 20 to 32768. After that loading starts working in 5-10 times faster. 因此，通过使用反射，我将CipherInputStream inputBuffer的大小从20更改为32768。此后，加载开始的速度提高了5-10倍。 The question is how this manipulations with CipherInputStream could affect application's security? 问题是对CipherInputStream的这种操作如何影响应用程序的安全性？

1 个解决方案

It should not affect it at all. 它根本不应该影响它。 Your security is derived from the fact that no-one knows your secret key. 您的安全性源于没有人知道您的密钥这一事实。 The size of the data you happen to decrypt with that key is not relevant. 您碰巧用该密钥解密的数据大小无关紧要。

如何正确读取CipherInputStream？ - How to read a CipherInputStream correctly?

CipherInputStream上的available（）会始终提供完整大小的流吗？ - Will available() on CipherInputStream give full size of stream always?

将 CipherInputStream 与 Sockets 一起使用，查找未加密文件的大小 - Using CipherInputStream with Sockets, finding size of unencrypted file

Java cipherinputstream将所有输入数据都设为0 - Java cipherinputstream turns all input data to 0

如何确定BufferedOutputStream的write方法的缓冲区大小 - How to determine the buffer size for BufferedOutputStream's write method

JVM堆大小是强制还是某些如何影响子进程？ - Does the JVM Heap Size forces or some how affects subprocesses?

如何避免多次按下输入而影响输入数据？ - how to avoid pressing several time enter affects the input data?

如何在Java中将CipherInputStream和CipherOutputStream转换为ObjectInputStream和ObjectOutputStream？ - How do I convert a CipherInputStream and CipherOutputStream to ObjectInputStream and ObjectOutputStream in Java?

如何清除java中的输入缓冲区 - how to clear input buffer in java

如何清除输入缓冲区以忽略提示前给出的输入？ - How can I clear the input buffer to ignore input given before prompt?

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相关问题 如何正确读取CipherInputStream？ - How to read a CipherInputStream correctly? CipherInputStream上的available（）会始终提供完整大小的流吗？ - Will available() on CipherInputStream give full size of stream always? 将 CipherInputStream 与 Sockets 一起使用，查找未加密文件的大小 - Using CipherInputStream with Sockets, finding size of unencrypted file Java cipherinputstream将所有输入数据都设为0 - Java cipherinputstream turns all input data to 0 如何确定BufferedOutputStream的write方法的缓冲区大小 - How to determine the buffer size for BufferedOutputStream's write method JVM堆大小是强制还是某些如何影响子进程？ - Does the JVM Heap Size forces or some how affects subprocesses? 如何避免多次按下输入而影响输入数据？ - how to avoid pressing several time enter affects the input data? 如何在Java中将CipherInputStream和CipherOutputStream转换为ObjectInputStream和ObjectOutputStream？ - How do I convert a CipherInputStream and CipherOutputStream to ObjectInputStream and ObjectOutputStream in Java? 如何清除java中的输入缓冲区 - how to clear input buffer in java 如何清除输入缓冲区以忽略提示前给出的输入？ - How can I clear the input buffer to ignore input given before prompt?

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