DIFFING- Comparative Technique

Diffing is the practice of comparing two things for differences, especially after some change has been made. The two things in question could be files, Registry entries, memory contents, packets, emails almost anything. The general principle is that you take some sort of snapshot of the item in question (for example, if it’s a file, save a copy of the file), perform the action you think will cause a change, and then compare the snapshot with the current item, and see what changed. In computing, diff is a file comparison utility that outputs the differences between two files. It is typically used to show the changes between one version of a file and a former version of the same file. Diff displays the changes made per line for text files. Modern implementations also support binary files. The output is called a "diff", or a patch, since the output can be applied with the UNIX program patch. The output of similar file comparison utilities is also called a diff; like the use of the word "grep" for describing the act of searching, the word diff is used in jargon as a verb for calculating any difference. Diffing is a highly successful tactic that hackers use to analyze different versions of the same file in order to pinpoint the differences between the files. This comparative technique has been used by hackers for years.

Now we’re going to work with the real analysis.

 File Name: Msvcm80.dll

• File description: Microsoft C Runtime Library, Microsoft Visual Studio2005
• Version: 8.00.50727.762
• File size: 0.12 Mb

File Name: Msvcm80d.dll

• File description: Microsoft C Runtime Library, Microsoft Visual Studio2005
• Version: 8.00.50727.762
• File size: 0.22 Mb

See the both files date and values are different. Compare Suite is a very flexible tool. Once you’ve chosen your files, you can also choose how to compare them. Compare “by Keywords” to find similarities between unrelated documents. Compare drafts of the same document “word by word.” Or, compare “character by character” perfect for software developers Compare Suite can also tell you the number of words in your documents, the number of changes between them, and more. Set up a list of your interests, and Compare Suite will watch for these personal keywords in every document. There are many diffing tools are available in the market, but most of them support text, html, word, C coding, etc. But Compare Suite Pro is supported to DLL, and EXE files.