English 中文(简体)
A. 节目制作图像中的孔质学问题
原标题:A question about Steganography in images with programming

在阅读了两部使用Java/的“Stganography”课程之后。 NET 我的印象是,你从秘密形象中 gr取了每个个人子,然后从面貌上看,把它放在每个个人餐厅的最底层。

我这样做了吗?

最佳回答

Steganography是另一个信息层的藏匿点。 这里的目标是保存信息。

One method of doing so it to hide the secret information in an image by storing the secret in the lowest bit of each pixel. While this might fool your kid brother it is a very poor way of hiding the information because:

  • 任何照料者都知道这一点,因此知道检查最低点。

  • 它将改变图像的假体特性,向另一个寻找秘密的人树立红色旗帜。 例如,见Stegdetect——检测图像中质素含量的自动化工具。

Safer forms of steganography could take the form of writing a note in which some of the positions of letters contain a secret message. The trick is to use steganography to hide messages in things which computers are bad at analyzing (human langauge, the meaning or significance of symbols, songs). Bit manupulation is very easy to computers to detect.

在将机密信息列入一个制图信息之前,有权加以加密。 这样,如果他们发现信息,他们就不了解你试图发送的信息,而且如果有人正在调查他们可能因随机噪音而误用的信息,那么大多数西半球会从非常不知的输入(人类大地、图像等)产生相当随机的产出。

如果你想在这里学习更多的话,那是一些关于植物学的好论文:

问题回答

是的,使用最低(多余/无)比值。

无论数据是隐蔽的,还是覆盖物是形象,都确实涉及数据隐蔽。 任何数据格式都足以重复使用。 X86指令是一个很好的例子。 其他地点包括档案系统的未使用部分。

你们是正确的,在利用图像储存隐蔽数据时,低订单彩票是储存这些物品的适当场所。 然而,我建议不要试图在图像之间校正。 多数图像格式提供某种类型的压缩,来自原始的六氯乙烯专题介绍。 最好是直接从档案系统读取隐藏图像的比轨流,并将这些比照与影像相加。 这将需要较小的东道方形象。





相关问题
Manually implementing high performance algorithms in .NET

As a learning experience I recently tried implementing Quicksort with 3 way partitioning in C#. Apart from needing to add an extra range check on the left/right variables before the recursive call, ...

Anyone feel like passing it forward?

I m the only developer in my company, and am getting along well as an autodidact, but I know I m missing out on the education one gets from working with and having code reviewed by more senior devs. ...

How do I compare two decimals to 10 decimal places?

I m using decimal type (.net), and I want to see if two numbers are equal. But I only want to be accurate to 10 decimal places. For example take these three numbers. I want them all to be equal. 0....

Exception practices when creating a SynchronizationContext?

I m creating an STA version of the SynchronizationContext for use in Windows Workflow 4.0. I m wondering what to do about exceptions when Post-ing callbacks. The SynchronizationContext can be used ...

Show running instance in single instance application

I am building an application with C#. I managed to turn this into a single instance application by checking if the same process is already running. Process[] pname = Process.GetProcessesByName("...

How to combine DataTrigger and EventTrigger?

NOTE I have asked the related question (with an accepted answer): How to combine DataTrigger and Trigger? I think I need to combine an EventTrigger and a DataTrigger to achieve what I m after: when ...

热门标签