checksum algorithm

I wrote this blog a long time ago, because it is now moved to cnblogs, and after sorting it out, I will try again. I have been engaged in computer security/virus-related things (pure learning, do not do evil) for a few years before my work. The PE file format is required. Some PE files, such as drivers, are checked during loading to ensure the integrity of the driver files. There is a lot of information on how to verify PE files. Here is an article titled An Analysis of the Windows PE

IP/IGMP/UDP checksum algorithm and algorithm: the IP, IGMP, UDP, and TCP packet headers both have validation fields, and their algorithms are the same. The range of IP, IGMP, UDP, and TCP checksum: only the length of the packet header. When sending data, in order to calculate the packet inspection. Perform the followin

when using Google search IP datagram header checksum algorithm, always see the code, do not see the process, so there is this article, if there are errors please correct me. The article omitted a little, hehe IP/ICMP/IGMP/TCP/UDP and other protocols are the same checksum algorithm, the

For the sake of pseudo IP, we specially made an IP package and used C # to rewrite the IP header checksum algorithm. Document 1: IP Header Format: Version Number (4 digits) IP header length (4 digits) Service type (8 bits) Packet Length (16 bits) Id segment (16 bits) Flag (16 bits) Survival time (8 digits) Transmission Protocol (8 bits) Header checksum (16 bits)

Enhanced Internet checksum algorithm 8.10.20 For the principles, see: Internet checksum algorithm: http://blog.csdn.net/microtong/archive/2008/10/20/3112139.aspx Features of Internet checksum algorithm: http://blog.csdn.net/microt

Some days ago, an article N long ago suddenly became a hot topic for reading, after checking, I found that my page using that code for pr query could not normally get the URL PageRank value. some days ago, an article about N long ago suddenly became a hot topic to be read, after checking, I found that the Page that I used that code for pr query cannot get the Page Rank value of the URL normally. Replaced by a large segment of Google terms_of_service error messages such as "In your email, please

GooglePR query interface checksum new algorithm 12th page. Replaced by a large segment of Googleterms_of_service error messages such as "Inyouremail, pleasesendustheentirecodedisplayedbelow. It seems that the original interface has been replaced by a large segment of Google terms_of_service error messages such as "In your email, please send us the entire code displayed below. It seems that the original inte

Some days ago, an article N long ago suddenly became a hot topic for reading, after checking, I found that the page that I used that code for pr query could not normally get the URL PageRank value. Instead, I replaced it with a large segment of "In your email, google terms_of_service error message such as please send us the entire code displayed below. It seems that the original interface has expired. However, the extension SearchStatus that I installed in the Firefox toolbar can still parse th

Instead, a large section of "in your email, please send us the entire code displayed below" Google terms_of_service error message. It seems that the original interface has failed. But I installed in the Firefox toolbar extension searchstatus still be able to parse out the PR value of each page visited, find Searchstatus plug-in package to solve the source code, sure enough, is using a different verification code generation algorithm, after the origin

Replaced by a large segment of Google terms_of_service error messages such as "In your email, please send us the entire code displayed below. It seems that the original interface has expired.However, the extension SearchStatus that I installed in the Firefox toolbar can still parse the prvalue of each page visited, find the plug-in package of SearchStatus to unbind the source code, and use a different verification code generation algorithm, after the

Instead, a large section of "in your emails, please send us the entire code displayed below" such as Google terms_of_service error message. It seems that the original interface has been invalidated. But I installed in the Firefox toolbar extension Searchstatus still able to parse out the PR value of each page, find the Searchstatus of the plug-in package to see the source code, really is the use of a different verification code generation algorithm,

It turns out that there have been checksum-related cracking on the internet. I will interview the checksum compilation code and the vb version for cracking.Currently, I am using the checksum code of vb.Assembly Code of checksum:GOOGLECHECK proc nearVar_8 = dword ptr-8Var_4 = dword ptr-4Url_offset = dword ptr 8Url_length = dword ptr 0ChMagic_dword = dword ptr 10 h

Php Chinese network (www.php.cn) provides the most comprehensive basic tutorial on programming technology, introducing HTML, CSS, Javascript, Python, Java, Ruby, C, PHP, basic knowledge of MySQL and other programming languages. At the same time, this site also provides a large number of online instances, through which you can better learn programming... Reply: I can explain this code to you. it's a classic Code. I just saw it. it looks like this: Def ch